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authorGregory Nutt <gnutt@nuttx.org>2013-05-19 11:04:19 -0600
committerGregory Nutt <gnutt@nuttx.org>2013-05-19 11:04:19 -0600
commitaf086950f8567b3595cee4b3cc7852557464837d (patch)
treed8d45fde1031cfc50601aaf3786cb17894d580ab
parentd35cbec8dde8d8db715831a8143cf6db58a4d394 (diff)
downloadnuttx-af086950f8567b3595cee4b3cc7852557464837d.tar.gz
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Add SYSCFG definitions for STM32L152; Add board support STM32L-Discovery
-rw-r--r--nuttx/ChangeLog7
-rw-r--r--nuttx/arch/arm/src/stm32/Kconfig17
-rw-r--r--nuttx/arch/arm/src/stm32/chip/stm32f30xxx_rcc.h2
-rw-r--r--nuttx/arch/arm/src/stm32/chip/stm32f30xxx_syscfg.h8
-rw-r--r--nuttx/arch/arm/src/stm32/chip/stm32l15xxx_rcc.h16
-rw-r--r--nuttx/arch/arm/src/stm32/chip/stm32l15xxx_syscfg.h159
-rw-r--r--nuttx/arch/arm/src/stm32/stm32_gpio.h2
-rw-r--r--nuttx/arch/arm/src/stm32/stm32_syscfg.h4
-rw-r--r--nuttx/arch/arm/src/stm32/stm32_uart.h2
-rw-r--r--nuttx/configs/Kconfig15
-rw-r--r--nuttx/configs/stm32ldiscovery/Kconfig7
-rw-r--r--nuttx/configs/stm32ldiscovery/README.txt759
-rw-r--r--nuttx/configs/stm32ldiscovery/include/board.h335
-rw-r--r--nuttx/configs/stm32ldiscovery/nsh/Make.defs111
-rw-r--r--nuttx/configs/stm32ldiscovery/nsh/defconfig723
-rwxr-xr-xnuttx/configs/stm32ldiscovery/nsh/setenv.sh75
-rw-r--r--nuttx/configs/stm32ldiscovery/scripts/gnu-elf.ld129
-rw-r--r--nuttx/configs/stm32ldiscovery/scripts/ld.script117
-rw-r--r--nuttx/configs/stm32ldiscovery/src/Makefile122
-rw-r--r--nuttx/configs/stm32ldiscovery/src/stm32_autoleds.c153
-rw-r--r--nuttx/configs/stm32ldiscovery/src/stm32_boot.c102
-rw-r--r--nuttx/configs/stm32ldiscovery/src/stm32_buttons.c166
-rw-r--r--nuttx/configs/stm32ldiscovery/src/stm32_cxxinitialize.c155
-rw-r--r--nuttx/configs/stm32ldiscovery/src/stm32_nsh.c129
-rw-r--r--nuttx/configs/stm32ldiscovery/src/stm32_pwm.c142
-rw-r--r--nuttx/configs/stm32ldiscovery/src/stm32_qencoder.c187
-rw-r--r--nuttx/configs/stm32ldiscovery/src/stm32_spi.c214
-rw-r--r--nuttx/configs/stm32ldiscovery/src/stm32_usb.c131
-rw-r--r--nuttx/configs/stm32ldiscovery/src/stm32_userleds.c142
-rw-r--r--nuttx/configs/stm32ldiscovery/src/stm32_watchdog.c136
-rw-r--r--nuttx/configs/stm32ldiscovery/src/stm32ldiscovery.h149
31 files changed, 4394 insertions, 22 deletions
diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog
index f289b3f9e..8cec7d93e 100644
--- a/nuttx/ChangeLog
+++ b/nuttx/ChangeLog
@@ -4735,5 +4735,8 @@
Add GPIO support for the STM32L215X (2013-5-18).
* arch/arm/src/stm32/chip/stm32l15xxx_memorymap.h: STM32L215X memory map
(2013-5-18).
- * arch/arm/src/stm32/chip/stm32_pwr.h and stm32fl15xxx_rcc.h: More updates
- for the STM32L152 (2013-5-19).
+ * arch/arm/src/stm32/chip/stm32_pwr.h, stm32fl15xxx_rcc.h, and stm32l15xxx_syscfg.h:
+ More updates for the STM32L152 (2013-5-19).
+ * configs/stm32ldiscovey: Configuration for the STM32L-Discovery board.
+ Still does not build on initial check-in (2013-5-19)
+
diff --git a/nuttx/arch/arm/src/stm32/Kconfig b/nuttx/arch/arm/src/stm32/Kconfig
index 4bba7653b..458e7155a 100644
--- a/nuttx/arch/arm/src/stm32/Kconfig
+++ b/nuttx/arch/arm/src/stm32/Kconfig
@@ -480,6 +480,11 @@ config STM32_ADC4
select STM32_ADC
depends on STM32_STM32F30XX
+config STM32_COMP
+ bool "COMP"
+ default n
+ depends on STM32_STM32L15XX
+
config STM32_BKP
bool "BKP"
default n
@@ -626,7 +631,7 @@ config STM32_SPI2
config STM32_SPI3
bool "SPI3"
default n
- depends on STM32_CONNECTIVITYLINE || STM32_STM32F20XX || STM32_STM32F40XX || (STM32_VALUELINE && STM32_HIGHDENSITY)
+ depends on STM32_CONNECTIVITYLINE || STM32_STM32L15XX || STM32_STM32F20XX || STM32_STM32F40XX || (STM32_VALUELINE && STM32_HIGHDENSITY)
select SPI
select STM32_SPI
@@ -654,7 +659,7 @@ config STM32_SPI6
config STM32_SYSCFG
bool "SYSCFG"
default y
- depends on STM32_STM32F30XX || STM32_STM32F20XX || STM32_STM32F40XX
+ depends on STM32_STM32L15XX || STM32_STM32F30XX || STM32_STM32F20XX || STM32_STM32F40XX
config STM32_TIM1
bool "TIM1"
@@ -693,17 +698,17 @@ config STM32_TIM8
config STM32_TIM9
bool "TIM9"
default n
- depends on STM32_STM32F20XX || STM32_STM32F40XX
+ depends on STM32_STM32L15XX || STM32_STM32F20XX || STM32_STM32F40XX
config STM32_TIM10
bool "TIM10"
default n
- depends on STM32_STM32F20XX || STM32_STM32F40XX
+ depends on STM32_STM32L15XX || STM32_STM32F20XX || STM32_STM32F40XX
config STM32_TIM11
bool "TIM11"
default n
- depends on STM32_STM32F20XX || STM32_STM32F40XX
+ depends on STM32_STM32L15XX || STM32_STM32F20XX || STM32_STM32F40XX
config STM32_TIM12
bool "TIM12"
@@ -797,7 +802,7 @@ config STM32_UART8
config STM32_USB
bool "USB Device"
default n
- depends on (STM32_STM32F10XX && !STM32_VALUELINE) || STM32_STM32F30XX
+ depends on (STM32_STM32F10XX && !STM32_VALUELINE) || STM32_STM32L15XX || STM32_STM32F30XX
select USBDEV
config STM32_WWDG
diff --git a/nuttx/arch/arm/src/stm32/chip/stm32f30xxx_rcc.h b/nuttx/arch/arm/src/stm32/chip/stm32f30xxx_rcc.h
index 0a35f2b12..e0cd8bb43 100644
--- a/nuttx/arch/arm/src/stm32/chip/stm32f30xxx_rcc.h
+++ b/nuttx/arch/arm/src/stm32/chip/stm32f30xxx_rcc.h
@@ -1,5 +1,7 @@
/************************************************************************************
* arch/arm/src/stm32/chip/stm32f30xx_rcc.h
+ * For STM32L100xx, STM32L151xx, STM32L152xx and STM32L162xx advanced ARM-based
+ * 32-bit MCUs
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
diff --git a/nuttx/arch/arm/src/stm32/chip/stm32f30xxx_syscfg.h b/nuttx/arch/arm/src/stm32/chip/stm32f30xxx_syscfg.h
index 391f87531..1f19e74dc 100644
--- a/nuttx/arch/arm/src/stm32/chip/stm32f30xxx_syscfg.h
+++ b/nuttx/arch/arm/src/stm32/chip/stm32f30xxx_syscfg.h
@@ -80,10 +80,10 @@
/* SYSCFG memory remap register */
#define SYSCFG_CFGR1_MEMMODE_SHIFT (0) /* Bits 1:0 MEM_MODE: Memory mapping selection */
-#define SYSCFG_CFGR1_MEMMODE_MASK (3 << SYSCFG_CFGR1_SHIFT)
-# define SYSCFG_CFGR1_MEMMODE_FLASH (0 << SYSCFG_CFGR1_SHIFT) /* 00: Main Flash at 0x00000000 */
-# define SYSCFG_CFGR1_MEMMODE_SYSTEM (1 << SYSCFG_CFGR1_SHIFT) /* 01: System Flash at 0x00000000 */
-# define SYSCFG_CFGR1_MEMMODE_SRAM (3 << SYSCFG_CFGR1_SHIFT) /* 11: Embedded SRAM at 0x00000000 */
+#define SYSCFG_CFGR1_MEMMODE_MASK (3 << SYSCFG_CFGR1_MEMMODE_SHIFT)
+# define SYSCFG_CFGR1_MEMMODE_FLASH (0 << SYSCFG_CFGR1_MEMMODE_SHIFT) /* 00: Main Flash at 0x00000000 */
+# define SYSCFG_CFGR1_MEMMODE_SYSTEM (1 << SYSCFG_CFGR1_MEMMODE_SHIFT) /* 01: System Flash at 0x00000000 */
+# define SYSCFG_CFGR1_MEMMODE_SRAM (3 << SYSCFG_CFGR1_MEMMODE_SHIFT) /* 11: Embedded SRAM at 0x00000000 */
#define SYSCFG_CFGR1_USB_ITRMP (1 << 5) /* Bit 5: USB interrupt remap */
#define SYSCFG_CFGR1_TIM1_ITR3RMP (1 << 6) /* Bit 6: Timer 1 ITR3 selection */
#define SYSCFG_CFGR1_DAC_TRIGRMP (1 << 7) /* Bit 7: DAC trigger remap (when TSEL = 001) */
diff --git a/nuttx/arch/arm/src/stm32/chip/stm32l15xxx_rcc.h b/nuttx/arch/arm/src/stm32/chip/stm32l15xxx_rcc.h
index 89e84e7d0..4a94d0d55 100644
--- a/nuttx/arch/arm/src/stm32/chip/stm32l15xxx_rcc.h
+++ b/nuttx/arch/arm/src/stm32/chip/stm32l15xxx_rcc.h
@@ -428,14 +428,18 @@
/* Bits 2-7: Reserved */
#define RCC_CSR_LSEON (1 << 8) /* Bit 8: External Low Speed oscillator enable */
#define RCC_CSR_LSERDY (1 << 9) /* Bit 9: External Low Speed oscillator Ready */
-#define RCC_CSR_LSEBYP (1 << 10) /* Bit 10: External Low Speed oscillator Ready */
-#define RCC_CSR_LSECSSON (1 << 11) /* Bit 11: External Low Speed oscillator Ready */
-#define RCC_CSR_LSECSSD (1 << 12) /* Bit 12: External Low Speed oscillator Ready */
+#define RCC_CSR_LSEBYP (1 << 10) /* Bit 10: External low-speed oscillator bypass */
+#define RCC_CSR_LSECSSON (1 << 11) /* Bit 11: CSS on LSE enable */
+#define RCC_CSR_LSECSSD (1 << 12) /* Bit 12: CSS on LSE failure Detection */
/* Bits 13-15: Reserved */
-#define RCC_CSR_RTCSEL_SHIFT (16) /* Bits 16-17: */
+#define RCC_CSR_RTCSEL_SHIFT (16) /* Bits 16-17: RTC and LCD clock source selection */
#define RCC_CSR_RTCSEL_MASK (3 << RCC_CSR_RTCSEL_SHIFT)
-#define RCC_CSR_RTCEN (1 << 22) /* Bit 22: */
-#define RCC_CSR_RTCRST (1 << 23) /* Bit 23: */
+# define RCC_CSR_RTCSEL_NONE (0 << RCC_CSR_RTCSEL_SHIFT) /* 00: No clock */
+# define RCC_CSR_RTCSEL_LSE (1 << RCC_CSR_RTCSEL_SHIFT) /* 01: LSE oscillator clock is RTC/LCD clock */
+# define RCC_CSR_RTCSEL_LSI (2 << RCC_CSR_RTCSEL_SHIFT) /* 10: LSI oscillator clock is RTC/LCD clock */
+# define RCC_CSR_RTCSEL_HSE (3 << RCC_CSR_RTCSEL_SHIFT) /* 11: Divided HSE oscillator clock is RTC/LCD clock */
+#define RCC_CSR_RTCEN (1 << 22) /* Bit 22: RTC clock enable */
+#define RCC_CSR_RTCRST (1 << 23) /* Bit 23: RTC software reset */
#define RCC_CSR_RMVF (1 << 24) /* Bit 24: Remove reset flag */
#define RCC_CSR_OBLRSTF (1 << 25) /* Bit 25: Option byte loader reset flag */
#define RCC_CSR_PINRSTF (1 << 26) /* Bit 26: PIN reset flag */
diff --git a/nuttx/arch/arm/src/stm32/chip/stm32l15xxx_syscfg.h b/nuttx/arch/arm/src/stm32/chip/stm32l15xxx_syscfg.h
new file mode 100644
index 000000000..a4558f625
--- /dev/null
+++ b/nuttx/arch/arm/src/stm32/chip/stm32l15xxx_syscfg.h
@@ -0,0 +1,159 @@
+/****************************************************************************************************
+ * arch/arm/src/stm32/chip/stm32l15xxx_syscfg.h
+ * For STM32L100xx, STM32L151xx, STM32L152xx and STM32L162xx advanced ARM-based
+ * 32-bit MCUs
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_STM32_CHIP_STM32L15XXX_SYSCFG_H
+#define __ARCH_ARM_SRC_STM32_CHIP_STM32L15XXX_SYSCFG_H
+
+/****************************************************************************************************
+ * Included Files
+ ****************************************************************************************************/
+
+#include <nuttx/config.h>
+#include "chip.h"
+
+/****************************************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************************************/
+
+/* Register Offsets *********************************************************************************/
+
+#define STM32_SYSCFG_MEMRMP_OFFSET 0x0000 /* SYSCFG memory remap register */
+#define STM32_SYSCFG_PMC_OFFSET 0x0004 /* SYSCFG peripheral mode configuration register */
+
+#define STM32_SYSCFG_EXTICR_OFFSET(p) (0x0008 + ((p) & 0x000c)) /* Registers are displaced by 4! */
+#define STM32_SYSCFG_EXTICR1_OFFSET 0x0008 /* SYSCFG external interrupt configuration register 1 */
+#define STM32_SYSCFG_EXTICR2_OFFSET 0x000c /* SYSCFG external interrupt configuration register 2 */
+#define STM32_SYSCFG_EXTICR3_OFFSET 0x0010 /* SYSCFG external interrupt configuration register 3 */
+#define STM32_SYSCFG_EXTICR4_OFFSET 0x0014 /* SYSCFG external interrupt configuration register 4 */
+
+/* Register Addresses *******************************************************************************/
+
+#define STM32_SYSCFG_MEMRMP (STM32_SYSCFG_BASE+STM32_SYSCFG_MEMRMP_OFFSET)
+#define STM32_SYSCFG_PMC (STM32_SYSCFG_BASE+STM32_SYSCFG_PMC_OFFSET)
+
+#define STM32_SYSCFG_EXTICR(p) (STM32_SYSCFG_BASE+STM32_SYSCFG_EXTICR_OFFSET(p))
+#define STM32_SYSCFG_EXTICR1 (STM32_SYSCFG_BASE+STM32_SYSCFG_EXTICR1_OFFSET)
+#define STM32_SYSCFG_EXTICR2 (STM32_SYSCFG_BASE+STM32_SYSCFG_EXTICR2_OFFSET)
+#define STM32_SYSCFG_EXTICR3 (STM32_SYSCFG_BASE+STM32_SYSCFG_EXTICR3_OFFSET)
+#define STM32_SYSCFG_EXTICR4 (STM32_SYSCFG_BASE+STM32_SYSCFG_EXTICR4_OFFSET)
+
+/* Register Bitfield Definitions ********************************************************************/
+
+/* SYSCFG memory remap register */
+
+#define SYSCFG_MEMRMP_MEMMODE_SHIFT (0) /* Bits 0-1: Memory mapping selection */
+#define SYSCFG_MEMRMP_MEMMODE_MASK (3 << SYSCFG_MEMRMP_MEMMODE_SHIFT)
+# define SYSCFG_MEMRMP_MEMMODE_FLASH (0 << SYSCFG_MEMRMP_MEMMODE_SHIFT) /* 00: Main Flash memory mapped at 0x00000000 */
+# define SYSCFG_MEMRMP_MEMMODE_SYSTEM (1 << SYSCFG_MEMRMP_MEMMODE_SHIFT) /* 01: System Flash memory mapped at 0x00000000 */
+# define SYSCFG_MEMRMP_MEMMODE_FSMC (2 << SYSCFG_MEMRMP_MEMMODE_SHIFT) /* 10: FSMC */
+# define SYSCFG_MEMRMP_MEMMODE_SRAM (3 << SYSCFG_MEMRMP_MEMMODE_SHIFT) /* 11: SRAM mapped at 0x00000000 */
+ /* Bits 2-7: Reserved */
+#define SYSCFG_MEMRMP_BOOTMODE_SHIFT (0) /* Bits 8-9: Boot mode selected by the boot pins */
+#define SYSCFG_MEMRMP_BOOTMODE_MASK (3 << SYSCFG_MEMRMP_BOOTMODE_SHIFT)
+# define SYSCFG_MEMRMP_BOOTMODE_FLASH (0 << SYSCFG_MEMRMP_BOOTMODE_SHIFT) /* 00: Main Flash memory boot mode */
+# define SYSCFG_MEMRMP_BOOTMODE_SYSTEM (1 << SYSCFG_MEMRMP_BOOTMODE_SHIFT) /* 01: System Flash memory boot mode */
+# define SYSCFG_MEMRMP_BOOTMODE_SRAM (3 << SYSCFG_MEMRMP_BOOTMODE_SHIFT) /* 11: Embedded SRAM boot mode */
+ /* Bits 10-31: Reserved */
+
+/* SYSCFG peripheral mode configuration register */
+
+#define SYSCFG_PMC_USBPU (1 << 0) /* Bit 0: USB pull-up enable on DP line */
+#define SYSCFG_PMC_LCDCAPA_SHIFT (1) /* Bits 1-5: LCD decoupling capacitance connection */
+#define SYSCFG_PMC_LCDCAPA_MASK (0x1f << SYSCFG_PMC_LCDCAPA_SHIFT)
+# define SYSCFG_PMC_LCDCAPA_PB2 (0x01 << SYSCFG_PMC_LCDCAPA_SHIFT) /* Bit 1: Controls VLCDrail2 on PB2/LCD_VCAP2 */
+# define SYSCFG_PMC_LCDCAPA_PB12 (0x02 << SYSCFG_PMC_LCDCAPA_SHIFT) /* Bit 2: Controls VLCDrail1 on PB12/LCD_VCAP1 */
+# define SYSCFG_PMC_LCDCAPA_PB0 (0x04 << SYSCFG_PMC_LCDCAPA_SHIFT) /* Bit 3: Controls VLCDrail3 on PB0/LCD_VCAP3 */
+# define SYSCFG_PMC_LCDCAPA_PE11 (0x08 << SYSCFG_PMC_LCDCAPA_SHIFT) /* Bit 4: Controls VLCDrail1 on PE11/LCD_VCAP1 */
+# define SYSCFG_PMC_LCDCAPA_PE12 (0x10 << SYSCFG_PMC_LCDCAPA_SHIFT) /* Bit 5: Controls VLCDrail3 on PE12/LCD_VCAP3 */
+ /* Bits 6-31: Reserved */
+
+/* SYSCFG external interrupt configuration register 1-4 */
+
+#define SYSCFG_EXTICR_PORTA (0) /* 0000: PA[x] pin */
+#define SYSCFG_EXTICR_PORTB (1) /* 0001: PB[x] pin */
+#define SYSCFG_EXTICR_PORTC (2) /* 0010: PC[x] pin */
+#define SYSCFG_EXTICR_PORTD (3) /* 0011: PD[x] pin */
+#define SYSCFG_EXTICR_PORTE (4) /* 0100: PE[x] pin */
+#define SYSCFG_EXTICR_PORTH (5) /* 0101: PH[x] pin */
+#define SYSCFG_EXTICR_PORTF (6) /* 0110: PF[x] pin */
+#define SYSCFG_EXTICR_PORTG (7) /* 0111: PG[x] pin */
+
+#define SYSCFG_EXTICR_PORT_MASK (15)
+#define SYSCFG_EXTICR_EXTI_SHIFT(g) (((g) & 3) << 2)
+#define SYSCFG_EXTICR_EXTI_MASK(g) (SYSCFG_EXTICR_PORT_MASK << (SYSCFG_EXTICR_EXTI_SHIFT(g)))
+
+#define SYSCFG_EXTICR1_EXTI0_SHIFT (0) /* Bits 0-3: EXTI 0 coinfiguration */
+#define SYSCFG_EXTICR1_EXTI0_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR1_EXTI0_SHIFT)
+#define SYSCFG_EXTICR1_EXTI1_SHIFT (4) /* Bits 4-7: EXTI 1 coinfiguration */
+#define SYSCFG_EXTICR1_EXTI1_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR1_EXTI1_SHIFT)
+#define SYSCFG_EXTICR1_EXTI2_SHIFT (8) /* Bits 8-11: EXTI 2 coinfiguration */
+#define SYSCFG_EXTICR1_EXTI2_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR1_EXTI2_SHIFT)
+#define SYSCFG_EXTICR1_EXTI3_SHIFT (12) /* Bits 12-15: EXTI 3 coinfiguration */
+#define SYSCFG_EXTICR1_EXTI3_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR1_EXTI3_SHIFT)
+ /* Bits 16-31: Reserved */
+
+#define SYSCFG_EXTICR2_EXTI4_SHIFT (0) /* Bits 0-3: EXTI 4 coinfiguration */
+#define SYSCFG_EXTICR2_EXTI4_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR2_EXTI4_SHIFT)
+#define SYSCFG_EXTICR2_EXTI5_SHIFT (4) /* Bits 4-7: EXTI 5 coinfiguration */
+#define SYSCFG_EXTICR2_EXTI5_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR2_EXTI5_SHIFT)
+#define SYSCFG_EXTICR2_EXTI6_SHIFT (8) /* Bits 8-11: EXTI 6 coinfiguration */
+#define SYSCFG_EXTICR2_EXTI6_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR2_EXTI6_SHIFT)
+#define SYSCFG_EXTICR2_EXTI7_SHIFT (12) /* Bits 12-15: EXTI 7 coinfiguration */
+#define SYSCFG_EXTICR2_EXTI7_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR2_EXTI7_SHIFT)
+ /* Bits 16-31: Reserved */
+
+#define SYSCFG_EXTICR3_EXTI8_SHIFT (0) /* Bits 0-3: EXTI 8 coinfiguration */
+#define SYSCFG_EXTICR3_EXTI8_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR3_EXTI8_SHIFT)
+#define SYSCFG_EXTICR3_EXTI9_SHIFT (4) /* Bits 4-7: EXTI 9 coinfiguration */
+#define SYSCFG_EXTICR3_EXTI9_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR3_EXTI9_SHIFT)
+#define SYSCFG_EXTICR3_EXTI10_SHIFT (8) /* Bits 8-11: EXTI 10 coinfiguration */
+#define SYSCFG_EXTICR3_EXTI10_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR3_EXTI10_SHIFT)
+#define SYSCFG_EXTICR3_EXTI11_SHIFT (12) /* Bits 12-15: EXTI 11 coinfiguration */
+#define SYSCFG_EXTICR3_EXTI11_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR3_EXTI11_SHIFT)
+ /* Bits 16-31: Reserved */
+
+#define SYSCFG_EXTICR4_EXTI12_SHIFT (0) /* Bits 0-3: EXTI 12 coinfiguration */
+#define SYSCFG_EXTICR4_EXTI12_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR4_EXTI12_SHIFT)
+#define SYSCFG_EXTICR4_EXTI13_SHIFT (4) /* Bits 4-7: EXTI 13 coinfiguration */
+#define SYSCFG_EXTICR4_EXTI13_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR4_EXTI13_SHIFT)
+#define SYSCFG_EXTICR4_EXTI14_SHIFT (8) /* Bits 8-11: EXTI 14 coinfiguration */
+#define SYSCFG_EXTICR4_EXTI14_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR4_EXTI14_SHIFT)
+#define SYSCFG_EXTICR4_EXTI15_SHIFT (12) /* Bits 12-15: EXTI 15 coinfiguration */
+#define SYSCFG_EXTICR4_EXTI15_MASK (SYSCFG_EXTICR_PORT_MASK << SYSCFG_EXTICR4_EXTI15_SHIFT)
+ /* Bits 16-31: Reserved */
+
+#endif /* __ARCH_ARM_SRC_STM32_CHIP_STM32L15XXX_SYSCFG_H */
diff --git a/nuttx/arch/arm/src/stm32/stm32_gpio.h b/nuttx/arch/arm/src/stm32/stm32_gpio.h
index f041af2c6..cb3bcd474 100644
--- a/nuttx/arch/arm/src/stm32/stm32_gpio.h
+++ b/nuttx/arch/arm/src/stm32/stm32_gpio.h
@@ -291,7 +291,7 @@
#define GPIO_SPEED_SHIFT (10) /* Bits 10-11: GPIO frequency selection */
#define GPIO_SPEED_MASK (3 << GPIO_SPEED_SHIFT)
-#if define(CONFIG_STM32_STM32L15XX)
+#if defined(CONFIG_STM32_STM32L15XX)
# define GPIO_SPEED_400KHz (0 << GPIO_SPEED_SHIFT) /* 400 kHz Very low speed output */
# define GPIO_SPEED_2MHz (1 << GPIO_SPEED_SHIFT) /* 2 MHz Low speed output */
# define GPIO_SPEED_10MHz (2 << GPIO_SPEED_SHIFT) /* 10 MHz Medium speed output */
diff --git a/nuttx/arch/arm/src/stm32/stm32_syscfg.h b/nuttx/arch/arm/src/stm32/stm32_syscfg.h
index fd6790beb..657734df3 100644
--- a/nuttx/arch/arm/src/stm32/stm32_syscfg.h
+++ b/nuttx/arch/arm/src/stm32/stm32_syscfg.h
@@ -43,7 +43,9 @@
#include <nuttx/config.h>
#include "chip.h"
-#if defined(CONFIG_STM32_STM32F20XX)
+#if defined(CONFIG_STM32_STM32L15XX)
+# include "chip/stm32l15xxx_syscfg.h"
+#elif defined(CONFIG_STM32_STM32F20XX)
# include "chip/stm32f20xxx_syscfg.h"
#elif defined(CONFIG_STM32_STM32F30XX)
# include "chip/stm32f30xxx_syscfg.h"
diff --git a/nuttx/arch/arm/src/stm32/stm32_uart.h b/nuttx/arch/arm/src/stm32/stm32_uart.h
index 8197d5304..3a42a8334 100644
--- a/nuttx/arch/arm/src/stm32/stm32_uart.h
+++ b/nuttx/arch/arm/src/stm32/stm32_uart.h
@@ -53,7 +53,7 @@
#elif defined(CONFIG_STM32_STM32F40XX)
# include "chip/stm32f40xxx_uart.h"
#else
-# error "Unsupported STM32 memory map"
+# error "Unsupported STM32 UART"
#endif
/************************************************************************************
diff --git a/nuttx/configs/Kconfig b/nuttx/configs/Kconfig
index 440cac53a..6513a8a23 100644
--- a/nuttx/configs/Kconfig
+++ b/nuttx/configs/Kconfig
@@ -542,7 +542,7 @@ config ARCH_BOARD_STM32F3_DISCOVERY
select ARCH_HAVE_BUTTONS
select ARCH_HAVE_IRQBUTTONS
---help---
- STMicro STM32F3-Discovery board based on the STMicro ARCH_CHIP_STM32F303VCT6 MCU.
+ STMicro STM32F3-Discovery board based on the STMicro STM32F303VCT6 MCU.
config ARCH_BOARD_STM32F4_DISCOVERY
bool "STMicro STM32F4-Discovery board"
@@ -553,6 +553,15 @@ config ARCH_BOARD_STM32F4_DISCOVERY
---help---
STMicro STM32F4-Discovery board based on the STMicro STM32F407VGT6 MCU.
+config ARCH_BOARD_STM32L_DISCOVERY
+ bool "STMicro STM32L-Discovery board"
+ depends on ARCH_CHIP_STM32L152RB
+ select ARCH_HAVE_LEDS
+ select ARCH_HAVE_BUTTONS
+ select ARCH_HAVE_IRQBUTTONS
+ ---help---
+ STMicro STM32L-Discovery board based on the STMicro STM32L152RB MCU.
+
config ARCH_BOARD_MIKROE_STM32F4
bool "MikroElektronika Mikromedia for STM32F4 board"
depends on ARCH_CHIP_STM32F407VG
@@ -762,6 +771,7 @@ config ARCH_BOARD
default "stm32f100rc_generic" if ARCH_BOARD_STM32F100RC_GENERIC
default "stm32f3discovery" if ARCH_BOARD_STM32F3_DISCOVERY
default "stm32f4discovery" if ARCH_BOARD_STM32F4_DISCOVERY
+ default "stm32ldiscovery" if ARCH_BOARD_STM32L_DISCOVERY
default "mikroe-stm32f4" if ARCH_BOARD_MIKROE_STM32F4
default "sure-pic32mx" if ARCH_BOARD_SUREPIC32MX
default "teensy" if ARCH_BOARD_TEENSY
@@ -993,6 +1003,9 @@ endif
if ARCH_BOARD_STM32F4_DISCOVERY
source "configs/stm32f4discovery/Kconfig"
endif
+if ARCH_BOARD_STM32L_DISCOVERY
+source "configs/stm32ldiscovery/Kconfig"
+endif
if ARCH_BOARD_SUREPIC32MX
source "configs/sure-pic32mx/Kconfig"
endif
diff --git a/nuttx/configs/stm32ldiscovery/Kconfig b/nuttx/configs/stm32ldiscovery/Kconfig
new file mode 100644
index 000000000..1440cc9ca
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/Kconfig
@@ -0,0 +1,7 @@
+#
+# For a description of the syntax of this configuration file,
+# see misc/tools/kconfig-language.txt.
+#
+
+if ARCH_BOARD_STM32FL_DISCOVERY
+endif
diff --git a/nuttx/configs/stm32ldiscovery/README.txt b/nuttx/configs/stm32ldiscovery/README.txt
new file mode 100644
index 000000000..2f326ece1
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/README.txt
@@ -0,0 +1,759 @@
+README
+======
+
+This README discusses issues unique to NuttX configurations for the
+STMicro STM32L-Discovery development board. The STM32L-Discovery board
+is based on the STM32L152RBT6 MCU (128KB FLASH and 16KB of SRAM).
+
+The STM32L-Discovery and 32L152CDISCOVERY kits are functionally
+equivalent. The difference is the internal Flash memory size (STM32L152RBT6
+with 128 Kbytes or STM32L152RCT6 with 256 Kbytes).
+
+Both boards feature:
+
+ - An ST-LINK/V2 embedded debug tool interface,
+ - LCD (24 segments, 4 commons),
+ - LEDs,
+ - Pushbuttons,
+ - A linear touch sensor, and
+ - four touchkeys.
+
+Contents
+========
+
+ - GPIO Pin Usage
+ - Development Environment
+ - GNU Toolchain Options
+ - IDEs
+ - NuttX EABI "buildroot" Toolchain
+ - NuttX OABI "buildroot" Toolchain
+ - NXFLAT Toolchain
+ - LEDs
+ - Serial Console
+ - Debugging
+ - STM32L-Discovery-specific Configuration Options
+ - Configurations
+
+GPIO Pin Usage
+==============
+
+ ----- --------------------- -------------------------------- ----------------
+ GPIO ALTERNATE FUNCTION BOARD FUNCTION P1/P2
+ ----- --------------------- -------------------------------- ----------------
+ PA0 WKUP1/USART2_CTS/ Push button (PA0), WAKE UP (Iuu) P1, pin 15
+ ADC_IN0/TIM2_CH1_ETR
+ /COMP1_INP
+ PA1 USART2_RTS/ADC_IN1/ LCD SEG0 P1, pin 16
+ TIM2_CH2/LCD_SEG0/
+ COMP1_INP
+ PA2 USART2_TX/ADC_IN2/ LCD SEG1 P1, pin 17
+ TIM2_CH3/TIM9_CH1/
+ LCD_SEG1/COMP1_INP
+ PA3 USART2_RX/ADC_IN3/ LCD SEG2 P1, pin 18
+ TIM2_CH4/TIM9_CH2/
+ LCD_SEG2/COMP1_INP
+ PA4 SPI1_NSS/USART2_CK/ Measurement (Iuu) P1, pin 19
+ ADC_IN4/DAC_OUT1/
+ COMP1_INP
+ PA5 SPI1_SCK/ADC_IN5/ --- P1, pin 20
+ DAC_OUT2/
+ TIM2_CH1_ETR/COMP1_
+ INP
+ PA6 SPI1_MISO/ADC_IN6/ Linear Touch Sensor (PA6) ---
+ TIM3_CH1/TIM1_BKIN/
+ LCD_SEG3/TIM10_CH1/
+ COMP1_INP
+ PA7 SPI1_MOSI/ADC_IN7/ Linear Touch Sensor (PA7) ---
+ TIM3_CH2/TIM1_CH1N
+ /LCD_SEG4/TIM11_CH1/
+ PA8 USART1_CK/MCO/ LCD glass COM0 P2, pin 23
+ PA9 USART1_TX/LCD_COM1 LCD glass COM1 P2, pin 22
+ PA10 USART1_RX/LCD_COM2 LCD glass COM2 P2, pin 21
+ PA11 USART1_CTS/USBDM/ --- P2, pin 20
+ SPI1_MISO
+ PA12 USART1_RTS/USBDP/ --- P2, pin 19
+ SPI1_MOSI
+ ----- --------------------- -------------------------------- ----------------
+ PB0 ADC_IN8/TIM3_CH3/ Linear Touch Sensor (PB0) ---
+ LCD_SEG5/COMP1_INP/
+ VREF_OUT
+ PB1 ADC_IN9/TIM3_CH4/ Linear Touch Sensor (PB1) ---
+ LCD_SEG6/COMP1_INP/
+ VREF_OUT
+ PB2/ --- --- P1, pin 21
+ BOOT1
+ PB5 I2C1_SMBAl/TIM3_CH2/ LCD SEG5 P2, pin 9
+ SPI1_MOSI/COMP2_INP/
+ LCD_SEG9
+ PB6 I2C1_SCL/TIM4_CH1/ LED Blue P2, pin 8
+ USART1_TX/LCD_SEG8
+ PB7 I2C1_SDA/TIM4_CH2/ LED Green P2, pin 7
+ USART1_RX/PVD_IN
+ PB8 TIM4_CH3/I2C1_SCL/ LCD SEG13 P2, pin 4
+ LCD_SEG16/TIM10_CH1
+ PB9 TIM4_CH4/I2C1_SDA/ LCD glass COM3 P2, pin 3
+ LCD_COM3/TIM11_CH1
+ PB10 I2C2_SCL/USART3_TX/ LCD SEG6 P1, pin 22
+ TIM2_CH3/LCD_SEG10
+ PB11 I2C2_SDA/USART3_RX/ LCD SEG7 P1, pin 23
+ TIM2_CH4/LCD_SEG11
+ PB12 SPI2_NSS/I2C2_SMBA/ LCD SEG8 P1, pin 24
+ USART3_CK/LCD_SEG1
+ 2/ADC_IN18/COMP1_INP
+ / TIM10_CH1
+ PB13 SPI2_SCK/USART3_CTS/ LCD SEG9 P1, pin 25
+ LCD_SEG13/ADC_IN19/
+ COMP1_INP/TIM9_CH1
+ PB14 SPI2_MISO/USART3_RT LCD SEG10 P1, pin 26
+ S/LCD_SEG14/ADC_IN20
+ / COMP1_INP/TIM9_CH2
+ PB15 SPI2_MOSI/TIM1_CH3N/ LCD SEG11 P1, pin 27
+ LCD_SEG15/ADC_IN21/
+ COMP1_INP/TIM11_CH1/
+ RTC_50_60Hz
+ ----- --------------------- -------------------------------- ----------------
+ PC0 ADC_IN10/LCD_SEG18/ LCD SEG14 P1, pin 11
+ COMP1_INP
+ PC1 ADC_IN11/LCD_SEG19/ LCD SEG15 P1, pin 12
+ COMP1_INP
+ PC2 ADC_IN12/LCD_SEG20/ LCD SEG16 P1, pin 13
+ COMP1_INP
+ PC3 ADC_IN13/LCD_SEG21/ LCD SEG17 P1, pin 14
+ COMP1_INP
+ PC4 ADC_IN14/LCD_SEG22/ Linear Touch Sensor (PC4) ---
+ COMP1_INP
+ PC5 ADC_IN15/LCD_SEG23/ Linear Touch Sensor (PC5) ---
+ COMP1_INP
+ PC6 TIM3_CH1/LCD_SEG24 LCD SEG18 P2, pin 27
+ PC7 TIM3_CH2/LCD_SEG25 LCD SEG19 P2, pin 26
+ PC8 TIM3_CH3/LCD_SEG26 LCD SEG20 P2, pin 25
+ PC9 TIM3_CH4/LCD_SEG27 LCD SEG21 P2, pin 24
+ PC10 USART3_TX/LCD_SEG28 LCD SEG22 P2, pin 15
+ /LCD_SEG40/LCD_COM4
+ PC11 USART3_RX/LCD_SEG2 LCD SEG23 P2, pin 14
+ 9/LCD_SEG41/
+ LCD_COM5
+ PC12 USART3_CK/LCD_SEG3 --- P2, pin 13
+ 0/LCD_SEG42/
+ LCD_COM6
+ PC13 RTC_AF1/WKUP2 2 CNT_ IDD CNT_EN P1, pin 4
+ EN 4
+ PC14 OSC32_IN 3 OSC32_IN OSC32_IN P1, pin 5
+ PC15 OSC32_OUT 4 OSC32_OUT OSC32_OUT P1, pin 6
+ ----- --------------------- -------------------------------- ----------------
+ PD2 TIM3_ETR/LCD_SEG31/ --- P2, pin 12
+ LCD_SEG43/LCD_COM7
+ ----- --------------------- -------------------------------- ----------------
+
+Development Environment
+=======================
+
+ Either Linux or Cygwin on Windows can be used for the development environment.
+ The source has been built only using the GNU toolchain (see below). Other
+ toolchains will likely cause problems.
+
+GNU Toolchain Options
+=====================
+
+ Toolchain Configurations
+ ------------------------
+ The NuttX make system has been modified to support the following different
+ toolchain options.
+
+ 1. The CodeSourcery GNU toolchain,
+ 2. The Atollic Toolchain,
+ 3. The devkitARM GNU toolchain,
+ 4. Raisonance GNU toolchain, or
+ 5. The NuttX buildroot Toolchain (see below).
+
+ All testing has been conducted using the CodeSourcery toolchain for Windows. To use
+ the Atollic, devkitARM, Raisonance GNU, or NuttX buildroot toolchain, you simply need to
+ add one of the following configuration options to your .config (or defconfig)
+ file:
+
+ CONFIG_STM32_CODESOURCERYW=y : CodeSourcery under Windows
+ CONFIG_STM32_CODESOURCERYL=y : CodeSourcery under Linux
+ CONFIG_STM32_ATOLLIC_LITE=y : The free, "Lite" version of Atollic toolchain under Windows
+ CONFIG_STM32_ATOLLIC_PRO=y : The paid, "Pro" version of Atollic toolchain under Windows
+ CONFIG_STM32_DEVKITARM=y : devkitARM under Windows
+ CONFIG_STM32_RAISONANCE=y : Raisonance RIDE7 under Windows
+ CONFIG_STM32_BUILDROOT=y : NuttX buildroot under Linux or Cygwin (default)
+
+ If you change the default toolchain, then you may also have to modify the PATH in
+ the setenv.h file if your make cannot find the tools.
+
+ NOTE: the CodeSourcery (for Windows), Atollic, devkitARM, and Raisonance toolchains are
+ Windows native toolchains. The CodeSourcey (for Linux) and NuttX buildroot
+ toolchains are Cygwin and/or Linux native toolchains. There are several limitations
+ to using a Windows based toolchain in a Cygwin environment. The three biggest are:
+
+ 1. The Windows toolchain cannot follow Cygwin paths. Path conversions are
+ performed automatically in the Cygwin makefiles using the 'cygpath' utility
+ but you might easily find some new path problems. If so, check out 'cygpath -w'
+
+ 2. Windows toolchains cannot follow Cygwin symbolic links. Many symbolic links
+ are used in Nuttx (e.g., include/arch). The make system works around these
+ problems for the Windows tools by copying directories instead of linking them.
+ But this can also cause some confusion for you: For example, you may edit
+ a file in a "linked" directory and find that your changes had no effect.
+ That is because you are building the copy of the file in the "fake" symbolic
+ directory. If you use a Windows toolchain, you should get in the habit of
+ making like this:
+
+ make clean_context all
+
+ An alias in your .bashrc file might make that less painful.
+
+ 3. Dependencies are not made when using Windows versions of the GCC. This is
+ because the dependencies are generated using Windows pathes which do not
+ work with the Cygwin make.
+
+ MKDEP = $(TOPDIR)/tools/mknulldeps.sh
+
+ The CodeSourcery Toolchain (2009q1)
+ -----------------------------------
+ The CodeSourcery toolchain (2009q1) does not work with default optimization
+ level of -Os (See Make.defs). It will work with -O0, -O1, or -O2, but not with
+ -Os.
+
+ The Atollic "Pro" and "Lite" Toolchain
+ --------------------------------------
+ One problem that I had with the Atollic toolchains is that the provide a gcc.exe
+ and g++.exe in the same bin/ file as their ARM binaries. If the Atollic bin/ path
+ appears in your PATH variable before /usr/bin, then you will get the wrong gcc
+ when you try to build host executables. This will cause to strange, uninterpretable
+ errors build some host binaries in tools/ when you first make.
+
+ Also, the Atollic toolchains are the only toolchains that have built-in support for
+ the FPU in these configurations. If you plan to use the Cortex-M4 FPU, you will
+ need to use the Atollic toolchain for now. See the FPU section below for more
+ information.
+
+ The Atollic "Lite" Toolchain
+ ----------------------------
+ The free, "Lite" version of the Atollic toolchain does not support C++ nor
+ does it support ar, nm, objdump, or objdcopy. If you use the Atollic "Lite"
+ toolchain, you will have to set:
+
+ CONFIG_HAVE_CXX=n
+
+ In order to compile successfully. Otherwise, you will get errors like:
+
+ "C++ Compiler only available in TrueSTUDIO Professional"
+
+ The make may then fail in some of the post link processing because of some of
+ the other missing tools. The Make.defs file replaces the ar and nm with
+ the default system x86 tool versions and these seem to work okay. Disable all
+ of the following to avoid using objcopy:
+
+ CONFIG_RRLOAD_BINARY=n
+ CONFIG_INTELHEX_BINARY=n
+ CONFIG_MOTOROLA_SREC=n
+ CONFIG_RAW_BINARY=n
+
+ devkitARM
+ ---------
+ The devkitARM toolchain includes a version of MSYS make. Make sure that the
+ the paths to Cygwin's /bin and /usr/bin directories appear BEFORE the devkitARM
+ path or will get the wrong version of make.
+
+IDEs
+====
+
+ NuttX is built using command-line make. It can be used with an IDE, but some
+ effort will be required to create the project.
+
+ Makefile Build
+ --------------
+ Under Eclipse, it is pretty easy to set up an "empty makefile project" and
+ simply use the NuttX makefile to build the system. That is almost for free
+ under Linux. Under Windows, you will need to set up the "Cygwin GCC" empty
+ makefile project in order to work with Windows (Google for "Eclipse Cygwin" -
+ there is a lot of help on the internet).
+
+ Native Build
+ ------------
+ Here are a few tips before you start that effort:
+
+ 1) Select the toolchain that you will be using in your .config file
+ 2) Start the NuttX build at least one time from the Cygwin command line
+ before trying to create your project. This is necessary to create
+ certain auto-generated files and directories that will be needed.
+ 3) Set up include pathes: You will need include/, arch/arm/src/stm32,
+ arch/arm/src/common, arch/arm/src/armv7-m, and sched/.
+ 4) All assembly files need to have the definition option -D __ASSEMBLY__
+ on the command line.
+
+ Startup files will probably cause you some headaches. The NuttX startup file
+ is arch/arm/src/stm32/stm32_vectors.S. With RIDE, I have to build NuttX
+ one time from the Cygwin command line in order to obtain the pre-built
+ startup object needed by RIDE.
+
+NuttX EABI "buildroot" Toolchain
+================================
+
+ A GNU GCC-based toolchain is assumed. The files */setenv.sh should
+ be modified to point to the correct path to the Cortex-M3 GCC toolchain (if
+ different from the default in your PATH variable).
+
+ If you have no Cortex-M3 toolchain, one can be downloaded from the NuttX
+ SourceForge download site (https://sourceforge.net/projects/nuttx/files/buildroot/).
+ This GNU toolchain builds and executes in the Linux or Cygwin environment.
+
+ 1. You must have already configured Nuttx in <some-dir>/nuttx.
+
+ cd tools
+ ./configure.sh stm32ldiscovery/<sub-dir>
+
+ 2. Download the latest buildroot package into <some-dir>
+
+ 3. unpack the buildroot tarball. The resulting directory may
+ have versioning information on it like buildroot-x.y.z. If so,
+ rename <some-dir>/buildroot-x.y.z to <some-dir>/buildroot.
+
+ 4. cd <some-dir>/buildroot
+
+ 5. cp configs/cortexm3-eabi-defconfig-4.6.3 .config
+
+ 6. make oldconfig
+
+ 7. make
+
+ 8. Edit setenv.h, if necessary, so that the PATH variable includes
+ the path to the newly built binaries.
+
+ See the file configs/README.txt in the buildroot source tree. That has more
+ details PLUS some special instructions that you will need to follow if you are
+ building a Cortex-M3 toolchain for Cygwin under Windows.
+
+ NOTE: Unfortunately, the 4.6.3 EABI toolchain is not compatible with the
+ the NXFLAT tools. See the top-level TODO file (under "Binary loaders") for
+ more information about this problem. If you plan to use NXFLAT, please do not
+ use the GCC 4.6.3 EABI toochain; instead use the GCC 4.3.3 OABI toolchain.
+ See instructions below.
+
+NuttX OABI "buildroot" Toolchain
+================================
+
+ The older, OABI buildroot toolchain is also available. To use the OABI
+ toolchain:
+
+ 1. When building the buildroot toolchain, either (1) modify the cortexm3-eabi-defconfig-4.6.3
+ configuration to use EABI (using 'make menuconfig'), or (2) use an exising OABI
+ configuration such as cortexm3-defconfig-4.3.3
+
+ 2. Modify the Make.defs file to use the OABI conventions:
+
+ +CROSSDEV = arm-nuttx-elf-
+ +ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
+ +NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-gotoff.ld -no-check-sections
+ -CROSSDEV = arm-nuttx-eabi-
+ -ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+ -NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-pcrel.ld -no-check-sections
+
+NXFLAT Toolchain
+================
+
+ If you are *not* using the NuttX buildroot toolchain and you want to use
+ the NXFLAT tools, then you will still have to build a portion of the buildroot
+ tools -- just the NXFLAT tools. The buildroot with the NXFLAT tools can
+ be downloaded from the NuttX SourceForge download site
+ (https://sourceforge.net/projects/nuttx/files/).
+
+ This GNU toolchain builds and executes in the Linux or Cygwin environment.
+
+ 1. You must have already configured Nuttx in <some-dir>/nuttx.
+
+ cd tools
+ ./configure.sh lpcxpresso-lpc1768/<sub-dir>
+
+ 2. Download the latest buildroot package into <some-dir>
+
+ 3. unpack the buildroot tarball. The resulting directory may
+ have versioning information on it like buildroot-x.y.z. If so,
+ rename <some-dir>/buildroot-x.y.z to <some-dir>/buildroot.
+
+ 4. cd <some-dir>/buildroot
+
+ 5. cp configs/cortexm3-defconfig-nxflat .config
+
+ 6. make oldconfig
+
+ 7. make
+
+ 8. Edit setenv.h, if necessary, so that the PATH variable includes
+ the path to the newly builtNXFLAT binaries.
+
+LEDs
+====
+
+The STM32L-Discovery board has four LEDs. Two of these are controlled by
+logic on the board and are not available for software control:
+
+LD1 COM: LD2 default status is red. LD2 turns to green to indicate that
+ communications are in progress between the PC and the ST-LINK/V2.
+LD2 PWR: Red LED indicates that the board is powered.
+
+And two LEDs can be controlled by software:
+
+User LD3: Green LED is a user LED connected to the I/O PB7 of the STM32L152
+ MCU.
+User LD4: Blue LED is a user LED connected to the I/O PB6 of the STM32L152
+ MCU.
+
+These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
+defined. In that case, the usage by the board port is defined in
+include/board.h and src/up_leds.c. The LEDs are used to encode OS-related
+events as follows:
+
+ SYMBOL Meaning LED state
+ LED3 LED4
+ ------------------- ----------------------- -------- --------
+ LED_STARTED NuttX has been started OFF OFF
+ LED_HEAPALLOCATE Heap has been allocated OFF OFF
+ LED_IRQSENABLED Interrupts enabled OFF OFF
+ LED_STACKCREATED Idle stack created ON OFF
+ LED_INIRQ In an interrupt No change
+ LED_SIGNAL In a signal handler No change
+ LED_ASSERTION An assertion failed No change
+ LED_PANIC The system has crashed OFF Blinking
+ LED_IDLE STM32 is is sleep mode Not used
+
+Serial Console
+==============
+
+The STM32L-Discovery has no on-board RS-232 driver. Further, there are no
+USART pins that do not conflict with the on board resources, in particular,
+the LCD: Most USART pins are available if the LCD is enabled; USART2 may be
+used if either the LCD or the on-board LEDs are disabled.
+
+ PA9 USART1_TX LCD glass COM1 P2, pin 22
+ PA10 USART1_RX LCD glass COM2 P2, pin 21
+ PB6 USART1_TX LED Blue P2, pin 8
+ PB7 USART1_RX LED Green P2, pin 7
+
+ PA2 USART2_TX LCD SEG1 P1, pin 17
+ PA3 USART2_RX LCD SEG2 P1, pin 18
+
+ PB10 USART3_TX LCD SEG6 P1, pin 22
+ PB11 USART3_RX LCD SEG7 P1, pin 23
+ PC10 USART3_TX LCD SEG22 P2, pin 15
+ PC11 USART3_RX LCD SEG23 P2, pin 14
+
+A USB serial console is another option.
+
+Debugging
+=========
+
+STM32 ST-LINK Utility
+---------------------
+For simply writing to FLASH, I use the STM32 ST-LINK Utility. At least
+version 2.4.0 is required (older versions do not recognize the STM32 F3
+device). This utility is available from free from the STMicro website.
+
+Debugging
+---------
+If you are going to use a debugger, you should make sure that the following
+settings are selection in your configuration file:
+
+ CONFIG_DEBUG_SYMBOLS=y : Enable debug symbols in the build
+ CONFIG_ARMV7M_USEBASEPRI=y : Use the BASEPRI register to disable interrupts
+
+OpenOCD
+-------
+I am told that OpenOCD will work with the ST-Link, but I have never tried
+it.
+
+https://github.com/texane/stlink
+--------------------------------
+This is an open source server for the ST-Link that I have never used.
+
+Atollic GDB Server
+------------------
+You can use the Atollic IDE, but I have never done that either.
+
+STM32L-Discovery-specific Configuration Options
+===============================================
+
+ CONFIG_ARCH - Identifies the arch/ subdirectory. This should
+ be set to:
+
+ CONFIG_ARCH=arm
+
+ CONFIG_ARCH_family - For use in C code:
+
+ CONFIG_ARCH_ARM=y
+
+ CONFIG_ARCH_architecture - For use in C code:
+
+ CONFIG_ARCH_CORTEXM4=y
+
+ CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory
+
+ CONFIG_ARCH_CHIP=stm32
+
+ CONFIG_ARCH_CHIP_name - For use in C code to identify the exact
+ chip:
+
+ CONFIG_ARCH_CHIP_STM32L152RB=y
+
+ CONFIG_ARCH_BOARD_STM32_CUSTOM_CLOCKCONFIG - Enables special STM32 clock
+ configuration features.
+
+ CONFIG_ARCH_BOARD_STM32_CUSTOM_CLOCKCONFIG=n
+
+ CONFIG_ARCH_BOARD - Identifies the configs subdirectory and
+ hence, the board that supports the particular chip or SoC.
+
+ CONFIG_ARCH_BOARD=stm32fldiscovery (for the STM32L-Discovery development board)
+
+ CONFIG_ARCH_BOARD_name - For use in C code
+
+ CONFIG_ARCH_BOARD_STM32FLDISCOVERY=y
+
+ CONFIG_ARCH_LOOPSPERMSEC - Must be calibrated for correct operation
+ of delay loops
+
+ CONFIG_ENDIAN_BIG - define if big endian (default is little
+ endian)
+
+ CONFIG_DRAM_SIZE - Describes the installed DRAM (SRAM in this case):
+
+ CONFIG_DRAM_SIZE=16384 (16Kb)
+
+ CONFIG_DRAM_START - The start address of installed DRAM
+
+ CONFIG_DRAM_START=0x20000000
+
+ CONFIG_STM32_CCMEXCLUDE - Exclude CCM SRAM from the HEAP
+
+ CONFIG_ARCH_IRQPRIO - The STM32L-Discovery supports interrupt prioritization
+
+ CONFIG_ARCH_IRQPRIO=y
+
+ CONFIG_ARCH_FPU - The STM32L-Discovery does not support a floating point unit (FPU)
+
+ CONFIG_ARCH_FPU=n
+
+ CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to boards that
+ have LEDs
+
+ CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt
+ stack. If defined, this symbol is the size of the interrupt
+ stack in bytes. If not defined, the user task stacks will be
+ used during interrupt handling.
+
+ CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions
+
+ CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to board architecture.
+
+ CONFIG_ARCH_CALIBRATION - Enables some build in instrumentation that
+ cause a 100 second delay during boot-up. This 100 second delay
+ serves no purpose other than it allows you to calibratre
+ CONFIG_ARCH_LOOPSPERMSEC. You simply use a stop watch to measure
+ the 100 second delay then adjust CONFIG_ARCH_LOOPSPERMSEC until
+ the delay actually is 100 seconds.
+
+ Individual subsystems can be enabled:
+
+ AHB
+ ----
+ (GPIOs are always enabled)
+ CONFIG_STM32_FLITF
+ CONFIG_STM32_DMA1
+ CONFIG_STM32_DMA2
+
+ APB2
+ ----
+ CONFIG_STM32_SYSCFG
+ CONFIG_STM32_TIM9
+ CONFIG_STM32_TIM10
+ CONFIG_STM32_TIM11
+ CONFIG_STM32_ADC1
+ CONFIG_STM32_SPI1
+ CONFIG_STM32_USART1
+
+ APB1
+ ----
+ CONFIG_STM32_TIM2
+ CONFIG_STM32_TIM3
+ CONFIG_STM32_TIM4
+ CONFIG_STM32_TIM5
+ CONFIG_STM32_TIM6
+ CONFIG_STM32_TIM7
+ CONFIG_STM32_LCD
+ CONFIG_STM32_WWDG
+ CONFIG_STM32_IWDG
+ CONFIG_STM32_SPI2
+ CONFIG_STM32_SPI3
+ CONFIG_STM32_USART2
+ CONFIG_STM32_USART3
+ CONFIG_STM32_I2C1
+ CONFIG_STM32_I2C2
+ CONFIG_STM32_USB
+ CONFIG_STM32_PWR -- Required for RTC
+ CONFIG_STM32_DAC1
+ CONFIG_STM32_COMP
+
+ Timer devices may be used for different purposes. One special purpose is
+ to generate modulated outputs for such things as motor control. If CONFIG_STM32_TIMn
+ is defined (as above) then the following may also be defined to indicate that
+ the timer is intended to be used for pulsed output modulation, ADC conversion,
+ or DAC conversion. Note that ADC/DAC require two definition: Not only do you have
+ to assign the timer (n) for used by the ADC or DAC, but then you also have to
+ configure which ADC or DAC (m) it is assigned to.
+
+ CONFIG_STM32_TIMn_PWM Reserve timer n for use by PWM, n=1,..,14
+ CONFIG_STM32_TIMn_ADC Reserve timer n for use by ADC, n=1,..,14
+ CONFIG_STM32_TIMn_ADCm Reserve timer n to trigger ADCm, n=1,..,14, m=1,..,3
+ CONFIG_STM32_TIMn_DAC Reserve timer n for use by DAC, n=1,..,14
+ CONFIG_STM32_TIMn_DACm Reserve timer n to trigger DACm, n=1,..,14, m=1,..,2
+
+ For each timer that is enabled for PWM usage, we need the following additional
+ configuration settings:
+
+ CONFIG_STM32_TIMx_CHANNEL - Specifies the timer output channel {1,..,4}
+
+ NOTE: The STM32 timers are each capable of generating different signals on
+ each of the four channels with different duty cycles. That capability is
+ not supported by this driver: Only one output channel per timer.
+
+ JTAG Enable settings (by default only SW-DP is enabled):
+
+ CONFIG_STM32_JTAG_FULL_ENABLE - Enables full SWJ (JTAG-DP + SW-DP)
+ CONFIG_STM32_JTAG_NOJNTRST_ENABLE - Enables full SWJ (JTAG-DP + SW-DP)
+ but without JNTRST.
+ CONFIG_STM32_JTAG_SW_ENABLE - Set JTAG-DP disabled and SW-DP enabled
+
+ STM32L-Discovery specific device driver settings
+
+ CONFIG_U[S]ARTn_SERIAL_CONSOLE - selects the USARTn (n=1,2,3) or UART
+ m (m=4,5) for the console and ttys0 (default is the USART1).
+ CONFIG_U[S]ARTn_RXBUFSIZE - Characters are buffered as received.
+ This specific the size of the receive buffer
+ CONFIG_U[S]ARTn_TXBUFSIZE - Characters are buffered before
+ being sent. This specific the size of the transmit buffer
+ CONFIG_U[S]ARTn_BAUD - The configure BAUD of the UART. Must be
+ CONFIG_U[S]ARTn_BITS - The number of bits. Must be either 7 or 8.
+ CONFIG_U[S]ARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
+ CONFIG_U[S]ARTn_2STOP - Two stop bits
+
+ STM32L-Discovery CAN Configuration
+
+ CONFIG_CAN - Enables CAN support (one or both of CONFIG_STM32_CAN1 or
+ CONFIG_STM32_CAN2 must also be defined)
+ CONFIG_CAN_EXTID - Enables support for the 29-bit extended ID. Default
+ Standard 11-bit IDs.
+ CONFIG_CAN_FIFOSIZE - The size of the circular buffer of CAN messages.
+ Default: 8
+ CONFIG_CAN_NPENDINGRTR - The size of the list of pending RTR requests.
+ Default: 4
+ CONFIG_CAN_LOOPBACK - A CAN driver may or may not support a loopback
+ mode for testing. The STM32 CAN driver does support loopback mode.
+ CONFIG_CAN1_BAUD - CAN1 BAUD rate. Required if CONFIG_STM32_CAN1 is defined.
+ CONFIG_CAN2_BAUD - CAN1 BAUD rate. Required if CONFIG_STM32_CAN2 is defined.
+ CONFIG_CAN_TSEG1 - The number of CAN time quanta in segment 1. Default: 6
+ CONFIG_CAN_TSEG2 - the number of CAN time quanta in segment 2. Default: 7
+ CONFIG_CAN_REGDEBUG - If CONFIG_DEBUG is set, this will generate an
+ dump of all CAN registers.
+
+ STM32L-Discovery SPI Configuration
+
+ CONFIG_STM32_SPI_INTERRUPTS - Select to enable interrupt driven SPI
+ support. Non-interrupt-driven, poll-waiting is recommended if the
+ interrupt rate would be to high in the interrupt driven case.
+ CONFIG_STM32_SPI_DMA - Use DMA to improve SPI transfer performance.
+ Cannot be used with CONFIG_STM32_SPI_INTERRUPT.
+
+Configurations
+==============
+
+Each STM32L-Discovery configuration is maintained in a sub-directory and
+can be selected as follow:
+
+ cd tools
+ ./configure.sh STM32L-Discovery/<subdir>
+ cd -
+ . ./setenv.sh
+
+If this is a Windows native build, then configure.bat should be used
+instead of configure.sh:
+
+ configure.bat STM32L-Discovery\<subdir>
+
+Where <subdir> is one of the following:
+
+ nsh:
+ ---
+ Configures the NuttShell (nsh) located at apps/examples/nsh. The
+ Configuration enables the serial interfaces on UART2. Support for
+ builtin applications is enabled, but in the base configuration no
+ builtin applications are selected (see NOTES below).
+
+ NOTES:
+
+ 1. This configuration uses the mconf-based configuration tool. To
+ change this configuration using that tool, you should:
+
+ a. Build and install the kconfig-mconf tool. See nuttx/README.txt
+ and misc/tools/
+
+ b. Execute 'make menuconfig' in nuttx/ in order to start the
+ reconfiguration process.
+
+ 2. By default, this configuration uses the CodeSourcery toolchain
+ for Windows and builds under Cygwin (or probably MSYS). That
+ can easily be reconfigured, of course.
+
+ CONFIG_HOST_WINDOWS=y : Builds under Windows
+ CONFIG_WINDOWS_CYGWIN=y : Using Cygwin
+ CONFIG_ARMV7M_TOOLCHAIN_CODESOURCERYW=y : CodeSourcery for Windows
+
+ 3. This configuration includes USB Support (CDC/ACM device)
+
+ CONFIG_STM32_USB=y : STM32 USB device support
+ CONFIG_USBDEV=y : USB device support must be enabled
+ CONFIG_CDCACM=y : The CDC/ACM driver must be built
+ CONFIG_NSH_BUILTIN_APPS=y : NSH built-in application support must be enabled
+ CONFIG_NSH_ARCHINIT=y : To perform USB initialization
+
+ The CDC/ACM example is included as two NSH "built-in" commands.\
+
+ CONFIG_EXAMPLES_CDCACM=y : Enable apps/examples/cdcacm
+
+ The two commands are:
+
+ sercon : Connect the serial device a create /dev/ttyACM0
+ serdis : Disconnect the serial device.
+
+ NOTE: The serial connections/disconnections do not work as advertised.
+ This is because the STM32L-Discovery board does not provide circuitry for
+ control of the "soft connect" USB pullup. As a result, the host PC
+ does not know the USB has been logically connected or disconnected. You
+ have to follow these steps to use USB:
+
+ 1) Start NSH with USB disconnected
+ 2) enter to 'sercon' command to start the CDC/ACM device, then
+ 3) Connect the USB device to the host.
+
+ and to close the connection:
+
+ 4) Disconnect the USB device from the host
+ 5) Enter the 'serdis' command
+
+ 4. This example can support the watchdog timer test (apps/examples/watchdog)
+ but this must be enabled by selecting:
+
+ CONFIG_EXAMPLES_WATCHDOG=y : Enable the apps/examples/watchdog
+ CONFIG_WATCHDOG=y : Enables watchdog timer driver support
+ CONFIG_STM32_WWDG=y : Enables the WWDG timer facility, OR
+ CONFIG_STM32_IWDG=y : Enables the IWDG timer facility (but not both)
+
+ The WWDG watchdog is driven off the (fast) 42MHz PCLK1 and, as result,
+ has a maximum timeout value of 49 milliseconds. for WWDG watchdog, you
+ should also add the fillowing to the configuration file:
+
+ CONFIG_EXAMPLES_WATCHDOG_PINGDELAY=20
+ CONFIG_EXAMPLES_WATCHDOG_TIMEOUT=49
+
+ The IWDG timer has a range of about 35 seconds and should not be an issue.
diff --git a/nuttx/configs/stm32ldiscovery/include/board.h b/nuttx/configs/stm32ldiscovery/include/board.h
new file mode 100644
index 000000000..c283ef13a
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/include/board.h
@@ -0,0 +1,335 @@
+/************************************************************************************
+ * configs/stm32ldiscovery/include/board.h
+ * include/arch/board/board.h
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __CONFIG_STM32LDISCOVERY_INCLUDE_BOARD_H
+#define __CONFIG_STM32LDISCOVERY_INCLUDE_BOARD_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifndef __ASSEMBLY__
+# include <stdint.h>
+#endif
+
+#include "stm32_rcc.h"
+#include "stm32.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Clocking *************************************************************************/
+/* Four different clock sources can be used to drive the system clock (SYSCLK):
+ *
+ * - HSI high-speed internal oscillator clock
+ * Generated from an internal 16 MHz RC oscillator
+ * - HSE high-speed external oscillator clock
+ * Driven by the 8MHz crystal (X1) on the OSC_IN and OSC_OUT pins
+ * - PLL clock
+ * - MSI multispeed internal oscillator clock
+ * The MSI clock signal is generated from an internal RC oscillator. Seven frequency
+ * ranges are available: 65.536 kHz, 131.072 kHz, 262.144 kHz, 524.288 kHz, 1.048 MHz,
+ * 2.097 MHz (default value) and 4.194 MHz.
+ *
+ * The devices have the following two secondary clock sources
+ * - LSI low-speed internal RC clock
+ * Drives the watchdog and RTC. Approximately 37KHz
+ * - LSE low-speed external oscillator clock
+ * Driven by 32.768KHz crystal (X2) on the OSC32_IN and OSC32_OUT pins.
+ */
+
+#define STM32_BOARD_XTAL 8000000ul /* X1 on board */
+
+#define STM32_HSI_FREQUENCY 16000000ul /* Approximately 16MHz */
+#define STM32_HSE_FREQUENCY STM32_BOARD_XTAL
+#define STM32_MSI_FREQUENCY 2097000 /* Default is approximately 2.097Mhz */
+#define STM32_LSI_FREQUENCY 37000 /* Approximately 37KHz */
+#define STM32_LSE_FREQUENCY 32768 /* X2 on board */
+
+/* PLL Configuration
+ *
+ * - PLL source is HSE/1 -> 8MHz input
+ * - PLL multipler is 8 -> 64MHz PLL output
+ * - PLL output divider 2 -> 32MHz divided PLL output
+ *
+ * PLL frequency is 8MHz (XTAL) x 8 / 2 = 32MHz
+ */
+
+#define STM32_CFGR_PLLSRC RCC_CFGR_PLLSRC
+#define STM32_CFGR_PLLXTPRE 0
+#define STM32_CFGR_PLLMUL RCC_CFGR_PLLMUL_CLKx8
+#define STM32_CFGR_PLLDIV RCC_CFGR_PLLDIV_2
+#define STM32_PLL_FREQUENCY (8*STM32_BOARD_XTAL/2)
+
+/* Use the PLL and set the SYSCLK source to be the PLL */
+
+#define STM32_SYSCLK_SW RCC_CFGR_SW_PLL
+#define STM32_SYSCLK_SWS RCC_CFGR_SWS_PLL
+#define STM32_SYSCLK_FREQUENCY STM32_PLL_FREQUENCY
+
+/* AHB clock (HCLK) is SYSCLK (32MHz) */
+
+#define STM32_RCC_CFGR_HPRE RCC_CFGR_HPRE_SYSCLK
+#define STM32_HCLK_FREQUENCY STM32_PLL_FREQUENCY
+#define STM32_BOARD_HCLK STM32_HCLK_FREQUENCY /* same as above, to satisfy compiler */
+
+/* APB2 clock (PCLK2) is HCLK (32MHz) */
+
+#define STM32_RCC_CFGR_PPRE2 RCC_CFGR_PPRE2_HCLK
+#define STM32_PCLK2_FREQUENCY STM32_HCLK_FREQUENCY
+#define STM32_APB2_CLKIN (STM32_PCLK2_FREQUENCY)
+
+/* APB2 timers 9, 10, and 11 will receive PCLK2. */
+
+#define STM32_APB2_TIM9_CLKIN (STM32_PCLK2_FREQUENCY)
+#define STM32_APB2_TIM10_CLKIN (STM32_PCLK2_FREQUENCY)
+#define STM32_APB2_TIM11_CLKIN (STM32_PCLK2_FREQUENCY)
+
+/* APB1 clock (PCLK1) is HCLK/2 (36MHz) */
+
+#define STM32_RCC_CFGR_PPRE1 RCC_CFGR_PPRE1_HCLKd2
+#define STM32_PCLK1_FREQUENCY (STM32_HCLK_FREQUENCY/2)
+
+/* APB1 timers 2-7 will receive PCLK1 */
+
+#define STM32_APB1_TIM2_CLKIN (STM32_PCLK1_FREQUENCY)
+#define STM32_APB1_TIM3_CLKIN (STM32_PCLK1_FREQUENCY)
+#define STM32_APB1_TIM4_CLKIN (STM32_PCLK1_FREQUENCY)
+#define STM32_APB1_TIM5_CLKIN (STM32_PCLK1_FREQUENCY)
+#define STM32_APB1_TIM6_CLKIN (STM32_PCLK1_FREQUENCY)
+#define STM32_APB1_TIM7_CLKIN (STM32_PCLK1_FREQUENCY)
+
+/* LED definitions ******************************************************************/
+/* The STM32L-Discovery board has four LEDs. Two of these are controlled by
+ * logic on the board and are not available for software control:
+ *
+ * LD1 COM: LD2 default status is red. LD2 turns to green to indicate that
+ * communications are in progress between the PC and the ST-LINK/V2.
+ * LD2 PWR: Red LED indicates that the board is powered.
+ *
+ * And two LEDs can be controlled by software:
+ *
+ * User LD3: Green LED is a user LED connected to the I/O PB7 of the STM32L152
+ * MCU.
+ * User LD4: Blue LED is a user LED connected to the I/O PB6 of the STM32L152
+ * MCU.
+ *
+ * If CONFIG_ARCH_LEDS is not defined, then the user can control the LEDs in any
+ * way. The following definitions are used to access individual LEDs.
+ */
+
+/* LED index values for use with stm32_setled() */
+
+#define BOARD_LED1 0 /* User LD3 */
+#define BOARD_LED2 1 /* User LD4 */
+#define BOARD_NLEDS 2
+
+/* LED bits for use with stm32_setleds() */
+
+#define BOARD_LED1_BIT (1 << BOARD_LED1)
+#define BOARD_LED2_BIT (1 << BOARD_LED2)
+
+/* If CONFIG_ARCH_LEDs is defined, then NuttX will control the 8 LEDs on board the
+ * STM32L-Discovery. The following definitions describe how NuttX controls the LEDs:
+ *
+ * SYMBOL Meaning LED state
+ * LED3 LED4
+ * ------------------- ----------------------- -------- --------
+ * LED_STARTED NuttX has been started OFF OFF
+ * LED_HEAPALLOCATE Heap has been allocated OFF OFF
+ * LED_IRQSENABLED Interrupts enabled OFF OFF
+ * LED_STACKCREATED Idle stack created ON OFF
+ * LED_INIRQ In an interrupt No change
+ * LED_SIGNAL In a signal handler No change
+ * LED_ASSERTION An assertion failed No change
+ * LED_PANIC The system has crashed OFF Blinking
+ * LED_IDLE STM32 is is sleep mode Not used
+ */
+
+#define LED_STARTED 0
+#define LED_HEAPALLOCATE 0
+#define LED_IRQSENABLED 0
+#define LED_STACKCREATED 1
+#define LED_INIRQ 2
+#define LED_SIGNAL 2
+#define LED_ASSERTION 2
+#define LED_PANIC 3
+
+/* Button definitions ***************************************************************/
+/* The STM32L-Discovery supports two buttons; only one button is controllable by
+ * software:
+ *
+ * B1 USER: user and wake-up button connected to the I/O PA0 of the STM32L152RBT6.
+ * B2 RESET: pushbutton connected to NRST is used to RESET the STM32L152RBT6.
+ */
+
+#define BUTTON_USER 0
+
+#define NUM_BUTTONS 1
+
+#define BUTTON_USER_BIT (1 << BUTTON_USER)
+
+/* Alternat Pin Functions **********************************************************/
+/* The STM32L-Discovery has no on-board RS-232 driver. Further, there are no USART
+ * pins that do not conflict with the on board resources, in particular, the LCD:
+ * Most USART pins are available if the LCD is enabled; USART2 may be used if either
+ * the LCD or the on-board LEDs are disabled.
+ *
+ * PA9 USART1_TX LCD glass COM1 P2, pin 22
+ * PA10 USART1_RX LCD glass COM2 P2, pin 21
+ * PB6 USART1_TX LED Blue P2, pin 8
+ * PB7 USART1_RX LED Green P2, pin 7
+ *
+ * PA2 USART2_TX LCD SEG1 P1, pin 17
+ * PA3 USART2_RX LCD SEG2 P1, pin 18
+ *
+ * PB10 USART3_TX LCD SEG6 P1, pin 22
+ * PB11 USART3_RX LCD SEG7 P1, pin 23
+ * PC10 USART3_TX LCD SEG22 P2, pin 15
+ * PC11 USART3_RX LCD SEG23 P2, pin 14
+ */
+
+#if !defined(CONFIG_STM32_LCD)
+/* Select PA9 and PA10 if the LCD is not enabled */
+
+# define GPIO_USART1_RX GPIO_USART1_RX_1
+# define GPIO_USART1_TX GPIO_USART1_TX_1
+
+/* This there are no other options for USART1 on this part */
+
+# define GPIO_USART2_RX GPIO_USART2_RX_1
+# define GPIO_USART2_TX GPIO_USART2_TX_1
+
+/* Arbirtrarily select PB10 and PB11 */
+
+# define GPIO_USART3_RX GPIO_USART3_RX_1
+# define GPIO_USART3_TX GPIO_USART3_TX_1
+
+#elif !defined(CONFIG_ARCH_LEDS)
+
+/* Select PB6 and PB7 if the LEDs are not enabled */
+
+# define GPIO_USART1_RX GPIO_USART1_RX_2
+# define GPIO_USART1_TX GPIO_USART1_TX_2
+
+#endif
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/************************************************************************************
+ * Public Function Prototypes
+ ************************************************************************************/
+/************************************************************************************
+ * Name: stm32_boardinitialize
+ *
+ * Description:
+ * All STM32 architectures must provide the following entry point. This entry point
+ * is called early in the intitialization -- after all memory has been configured
+ * and mapped but before any devices have been initialized.
+ *
+ ************************************************************************************/
+
+EXTERN void stm32_boardinitialize(void);
+
+/************************************************************************************
+ * Name: stm32_ledinit, stm32_setled, and stm32_setleds
+ *
+ * Description:
+ * If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board LEDs. If
+ * CONFIG_ARCH_LEDS is not defined, then the following interfacesare available to
+ * control the LEDs from user applications.
+ *
+ ************************************************************************************/
+
+#ifndef CONFIG_ARCH_LEDS
+EXTERN void stm32_ledinit(void);
+EXTERN void stm32_setled(int led, bool ledon);
+EXTERN void stm32_setleds(uint8_t ledset);
+#endif
+
+/************************************************************************************
+ * Button support.
+ *
+ * Description:
+ * up_buttoninit() must be called to initialize button resources. After
+ * that, up_buttons() may be called to collect the current state of all
+ * buttons or up_irqbutton() may be called to register button interrupt
+ * handlers.
+ *
+ * After up_buttoninit() has been called, up_buttons() may be called to
+ * collect the state of all buttons. up_buttons() returns an 8-bit bit set
+ * with each bit associated with a button. See the BUTTON_*_BIT
+ * definitions in board.h for the meaning of each bit.
+ *
+ * up_irqbutton() may be called to register an interrupt handler that will
+ * be called when a button is depressed or released. The ID value is a
+ * button enumeration value that uniquely identifies a button resource. See the
+ * BUTTON_* definitions in board.h for the meaning of enumeration
+ * value. The previous interrupt handler address is returned (so that it may
+ * restored, if so desired).
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_ARCH_BUTTONS
+EXTERN void up_buttoninit(void);
+EXTERN uint8_t up_buttons(void);
+#ifdef CONFIG_ARCH_IRQBUTTONS
+EXTERN xcpt_t up_irqbutton(int id, xcpt_t irqhandler);
+#endif
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __CONFIG_STM32LDISCOVERY_INCLUDE_BOARD_H */
diff --git a/nuttx/configs/stm32ldiscovery/nsh/Make.defs b/nuttx/configs/stm32ldiscovery/nsh/Make.defs
new file mode 100644
index 000000000..2987bb200
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/nsh/Make.defs
@@ -0,0 +1,111 @@
+############################################################################
+# configs/stm32f3discovery/nsh/Make.defs
+#
+# Copyright (C) 2013 Gregory Nutt. All rights reserved.
+# Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+# used to endorse or promote products derived from this software
+# without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+include ${TOPDIR}/.config
+include ${TOPDIR}/tools/Config.mk
+include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
+
+LDSCRIPT = ld.script
+
+ifeq ($(WINTOOL),y)
+ # Windows-native toolchains
+ DIRLINK = $(TOPDIR)/tools/copydir.sh
+ DIRUNLINK = $(TOPDIR)/tools/unlink.sh
+ MKDEP = $(TOPDIR)/tools/mknulldeps.sh
+ ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
+ ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
+ ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
+ MAXOPTIMIZATION = -O2
+else
+ # Linux/Cygwin-native toolchain
+ MKDEP = $(TOPDIR)/tools/mkdeps.sh
+ ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
+ ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
+ ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
+endif
+
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+AR = $(ARCROSSDEV)ar rcs
+NM = $(ARCROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
+
+ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
+ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
+
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+ ARCHOPTIMIZATION = -g
+else
+ ARCHOPTIMIZATION = $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+endif
+
+ARCHCFLAGS = -fno-builtin
+ARCHCXXFLAGS = -fno-builtin -fno-exceptions -fno-rtti
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow
+ARCHWARNINGSXX = -Wall -Wshadow
+ARCHDEFINES =
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
+
+CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-pcrel.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
+
+ifneq ($(CROSSDEV),arm-nuttx-elf-)
+ LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+ LDFLAGS += -g
+endif
+
+
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
+HOSTLDFLAGS =
+
diff --git a/nuttx/configs/stm32ldiscovery/nsh/defconfig b/nuttx/configs/stm32ldiscovery/nsh/defconfig
new file mode 100644
index 000000000..9a8956c2e
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/nsh/defconfig
@@ -0,0 +1,723 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# Nuttx/ Configuration
+#
+CONFIG_NUTTX_NEWCONFIG=y
+
+#
+# Build Setup
+#
+# CONFIG_EXPERIMENTAL is not set
+# CONFIG_HOST_LINUX is not set
+# CONFIG_HOST_OSX is not set
+CONFIG_HOST_WINDOWS=y
+# CONFIG_HOST_OTHER is not set
+# CONFIG_WINDOWS_NATIVE is not set
+CONFIG_WINDOWS_CYGWIN=y
+# CONFIG_WINDOWS_MSYS is not set
+# CONFIG_WINDOWS_OTHER is not set
+
+#
+# Build Configuration
+#
+# CONFIG_APPS_DIR="../apps"
+# CONFIG_BUILD_2PASS is not set
+
+#
+# Binary Output Formats
+#
+# CONFIG_RRLOAD_BINARY is not set
+CONFIG_INTELHEX_BINARY=y
+# CONFIG_MOTOROLA_SREC is not set
+CONFIG_RAW_BINARY=y
+
+#
+# Customize Header Files
+#
+# CONFIG_ARCH_STDBOOL_H is not set
+# CONFIG_ARCH_MATH_H is not set
+# CONFIG_ARCH_FLOAT_H is not set
+# CONFIG_ARCH_STDARG_H is not set
+
+#
+# Debug Options
+#
+# CONFIG_DEBUG is not set
+# CONFIG_DEBUG_SYMBOLS is not set
+
+#
+# System Type
+#
+# CONFIG_ARCH_8051 is not set
+CONFIG_ARCH_ARM=y
+# CONFIG_ARCH_AVR is not set
+# CONFIG_ARCH_HC is not set
+# CONFIG_ARCH_MIPS is not set
+# CONFIG_ARCH_RGMP is not set
+# CONFIG_ARCH_SH is not set
+# CONFIG_ARCH_SIM is not set
+# CONFIG_ARCH_X86 is not set
+# CONFIG_ARCH_Z16 is not set
+# CONFIG_ARCH_Z80 is not set
+CONFIG_ARCH="arm"
+
+#
+# ARM Options
+#
+# CONFIG_ARCH_CHIP_C5471 is not set
+# CONFIG_ARCH_CHIP_CALYPSO is not set
+# CONFIG_ARCH_CHIP_DM320 is not set
+# CONFIG_ARCH_CHIP_IMX is not set
+# CONFIG_ARCH_CHIP_KINETIS is not set
+# CONFIG_ARCH_CHIP_KL is not set
+# CONFIG_ARCH_CHIP_LM is not set
+# CONFIG_ARCH_CHIP_LPC17XX is not set
+# CONFIG_ARCH_CHIP_LPC214X is not set
+# CONFIG_ARCH_CHIP_LPC2378 is not set
+# CONFIG_ARCH_CHIP_LPC31XX is not set
+# CONFIG_ARCH_CHIP_LPC43XX is not set
+# CONFIG_ARCH_CHIP_NUC1XX is not set
+# CONFIG_ARCH_CHIP_SAM3U is not set
+CONFIG_ARCH_CHIP_STM32=y
+# CONFIG_ARCH_CHIP_STR71X is not set
+CONFIG_ARCH_CORTEXM3=y
+CONFIG_ARCH_FAMILY="armv7-m"
+CONFIG_ARCH_CHIP="stm32"
+# CONFIG_ARMV7M_USEBASEPRI is not set
+CONFIG_ARCH_HAVE_CMNVECTOR=y
+# CONFIG_ARMV7M_CMNVECTOR is not set
+CONFIG_ARCH_HAVE_MPU=y
+# CONFIG_ARMV7M_MPU is not set
+
+#
+# ARMV7M Configuration Options
+#
+# CONFIG_ARMV7M_TOOLCHAIN_ATOLLIC is not set
+# CONFIG_ARMV7M_TOOLCHAIN_BUILDROOT is not set
+# CONFIG_ARMV7M_TOOLCHAIN_CODEREDW is not set
+CONFIG_ARMV7M_TOOLCHAIN_CODESOURCERYW=y
+# CONFIG_ARMV7M_TOOLCHAIN_DEVKITARM is not set
+# CONFIG_ARMV7M_TOOLCHAIN_GNU_EABI is not set
+# CONFIG_ARMV7M_TOOLCHAIN_RAISONANCE is not set
+# CONFIG_SERIAL_TERMIOS is not set
+
+#
+# STM32 Configuration Options
+#
+# CONFIG_ARCH_CHIP_STM32L151C6 is not set
+# CONFIG_ARCH_CHIP_STM32L151C8 is not set
+# CONFIG_ARCH_CHIP_STM32L151CB is not set
+# CONFIG_ARCH_CHIP_STM32L151R6 is not set
+# CONFIG_ARCH_CHIP_STM32L151R8 is not set
+# CONFIG_ARCH_CHIP_STM32L151RB is not set
+# CONFIG_ARCH_CHIP_STM32L151V6 is not set
+# CONFIG_ARCH_CHIP_STM32L151V8 is not set
+# CONFIG_ARCH_CHIP_STM32L151VB is not set
+# CONFIG_ARCH_CHIP_STM32L152C6 is not set
+# CONFIG_ARCH_CHIP_STM32L152C8 is not set
+# CONFIG_ARCH_CHIP_STM32L152CB is not set
+# CONFIG_ARCH_CHIP_STM32L152R6 is not set
+# CONFIG_ARCH_CHIP_STM32L152R8 is not set
+CONFIG_ARCH_CHIP_STM32L152RB=y
+# CONFIG_ARCH_CHIP_STM32L152V6 is not set
+# CONFIG_ARCH_CHIP_STM32L152V8 is not set
+# CONFIG_ARCH_CHIP_STM32L152VB is not set
+# CONFIG_ARCH_CHIP_STM32F100C8 is not set
+# CONFIG_ARCH_CHIP_STM32F100CB is not set
+# CONFIG_ARCH_CHIP_STM32F100R8 is not set
+# CONFIG_ARCH_CHIP_STM32F100RB is not set
+# CONFIG_ARCH_CHIP_STM32F100RC is not set
+# CONFIG_ARCH_CHIP_STM32F100RD is not set
+# CONFIG_ARCH_CHIP_STM32F100RE is not set
+# CONFIG_ARCH_CHIP_STM32F100V8 is not set
+# CONFIG_ARCH_CHIP_STM32F100VB is not set
+# CONFIG_ARCH_CHIP_STM32F100VC is not set
+# CONFIG_ARCH_CHIP_STM32F100VD is not set
+# CONFIG_ARCH_CHIP_STM32F100VE is not set
+# CONFIG_ARCH_CHIP_STM32F103RET6 is not set
+# CONFIG_ARCH_CHIP_STM32F103VCT6 is not set
+# CONFIG_ARCH_CHIP_STM32F103VET6 is not set
+# CONFIG_ARCH_CHIP_STM32F103ZET6 is not set
+# CONFIG_ARCH_CHIP_STM32F105VBT7 is not set
+# CONFIG_ARCH_CHIP_STM32F107VC is not set
+# CONFIG_ARCH_CHIP_STM32F207IG is not set
+# CONFIG_ARCH_CHIP_STM32F302CB is not set
+# CONFIG_ARCH_CHIP_STM32F302CC is not set
+# CONFIG_ARCH_CHIP_STM32F302RB is not set
+# CONFIG_ARCH_CHIP_STM32F302RC is not set
+# CONFIG_ARCH_CHIP_STM32F302VB is not set
+# CONFIG_ARCH_CHIP_STM32F302VC is not set
+# CONFIG_ARCH_CHIP_STM32F303CB is not set
+# CONFIG_ARCH_CHIP_STM32F303CC is not set
+# CONFIG_ARCH_CHIP_STM32F303RB is not set
+# CONFIG_ARCH_CHIP_STM32F303RC is not set
+# CONFIG_ARCH_CHIP_STM32F303VB is not set
+# CONFIG_ARCH_CHIP_STM32F303VC is not set
+# CONFIG_ARCH_CHIP_STM32F405RG is not set
+# CONFIG_ARCH_CHIP_STM32F405VG is not set
+# CONFIG_ARCH_CHIP_STM32F405ZG is not set
+# CONFIG_ARCH_CHIP_STM32F407VE is not set
+# CONFIG_ARCH_CHIP_STM32F407VG is not set
+# CONFIG_ARCH_CHIP_STM32F407ZE is not set
+# CONFIG_ARCH_CHIP_STM32F407ZG is not set
+# CONFIG_ARCH_CHIP_STM32F407IE is not set
+# CONFIG_ARCH_CHIP_STM32F407IG is not set
+# CONFIG_ARCH_CHIP_STM32F427V is not set
+# CONFIG_ARCH_CHIP_STM32F427Z is not set
+# CONFIG_ARCH_CHIP_STM32F427I is not set
+CONFIG_STM32_STM32L15XX=y
+CONFIG_STM32_ENERGYLITE=y
+# CONFIG_STM32_STM32F10XX is not set
+# CONFIG_STM32_VALUELINE is not set
+# CONFIG_STM32_HIGHDENSITY is not set
+# CONFIG_STM32_CONNECTIVITYLINE is not set
+# CONFIG_STM32_STM32F20XX is not set
+# CONFIG_STM32_STM32F30XX is not set
+# CONFIG_STM32_STM32F40XX is not set
+# CONFIG_STM32_DFU is not set
+
+#
+# STM32 Peripheral Support
+#
+# CONFIG_STM32_ADC1 is not set
+# CONFIG_STM32_ADC2 is not set
+# CONFIG_STM32_ADC3 is not set
+# CONFIG_STM32_COMP is not set
+# CONFIG_STM32_CAN1 is not set
+# CONFIG_STM32_CRC is not set
+# CONFIG_STM32_DMA1 is not set
+# CONFIG_STM32_DMA2 is not set
+# CONFIG_STM32_DAC1 is not set
+# CONFIG_STM32_DAC2 is not set
+# CONFIG_STM32_I2C1 is not set
+# CONFIG_STM32_I2C2 is not set
+# CONFIG_STM32_IWDG is not set
+CONFIG_STM32_PWR=y
+# CONFIG_STM32_SDIO is not set
+# CONFIG_STM32_SPI1 is not set
+# CONFIG_STM32_SPI2 is not set
+# CONFIG_STM32_SPI3 is not set
+CONFIG_STM32_SYSCFG=y
+# CONFIG_STM32_TIM1 is not set
+# CONFIG_STM32_TIM2 is not set
+# CONFIG_STM32_TIM3 is not set
+# CONFIG_STM32_TIM4 is not set
+# CONFIG_STM32_TIM5 is not set
+# CONFIG_STM32_TIM6 is not set
+# CONFIG_STM32_TIM7 is not set
+# CONFIG_STM32_TIM8 is not set
+# CONFIG_STM32_TIM9 is not set
+# CONFIG_STM32_TIM10 is not set
+# CONFIG_STM32_TIM11 is not set
+CONFIG_STM32_USART1=y
+# CONFIG_STM32_USART2 is not set
+# CONFIG_STM32_USART3 is not set
+# CONFIG_STM32_UART4 is not set
+# CONFIG_STM32_UART5 is not set
+# CONFIG_STM32_USB is not set
+# CONFIG_STM32_WWDG is not set
+
+#
+# Alternate Pin Mapping
+#
+# CONFIG_STM32_JTAG_DISABLE is not set
+# CONFIG_STM32_JTAG_FULL_ENABLE is not set
+# CONFIG_STM32_JTAG_NOJNTRST_ENABLE is not set
+CONFIG_STM32_JTAG_SW_ENABLE=y
+# CONFIG_STM32_DISABLE_IDLE_SLEEP_DURING_DEBUG is not set
+# CONFIG_STM32_FORCEPOWER is not set
+# CONFIG_ARCH_BOARD_STM32_CUSTOM_CLOCKCONFIG is not set
+CONFIG_STM32_USART=y
+
+#
+# U[S]ART Configuration
+#
+# CONFIG_USART1_RS485 is not set
+# CONFIG_STM32_USART_SINGLEWIRE is not set
+
+#
+# USB Host Configuration
+#
+
+#
+# USB Device Configuration
+#
+
+#
+# External Memory Configuration
+#
+
+#
+# Architecture Options
+#
+# CONFIG_ARCH_NOINTC is not set
+# CONFIG_ARCH_VECNOTIRQ is not set
+# CONFIG_ARCH_DMA is not set
+CONFIG_ARCH_IRQPRIO=y
+# CONFIG_CUSTOM_STACK is not set
+# CONFIG_ADDRENV is not set
+CONFIG_ARCH_HAVE_VFORK=y
+CONFIG_ARCH_STACKDUMP=y
+# CONFIG_ENDIAN_BIG is not set
+# CONFIG_ARCH_HAVE_RAMFUNCS is not set
+CONFIG_ARCH_HAVE_RAMVECTORS=y
+# CONFIG_ARCH_RAMVECTORS is not set
+
+#
+# Board Settings
+#
+CONFIG_BOARD_LOOPSPERMSEC=6522
+# CONFIG_ARCH_CALIBRATION is not set
+CONFIG_DRAM_START=0x20000000
+CONFIG_DRAM_SIZE=16384
+CONFIG_ARCH_HAVE_INTERRUPTSTACK=y
+CONFIG_ARCH_INTERRUPTSTACK=0
+
+#
+# Boot options
+#
+# CONFIG_BOOT_RUNFROMEXTSRAM is not set
+CONFIG_BOOT_RUNFROMFLASH=y
+# CONFIG_BOOT_RUNFROMISRAM is not set
+# CONFIG_BOOT_RUNFROMSDRAM is not set
+# CONFIG_BOOT_COPYTORAM is not set
+
+#
+# Board Selection
+#
+CONFIG_ARCH_BOARD_STM32L_DISCOVERY=y
+# CONFIG_ARCH_BOARD_CUSTOM is not set
+CONFIG_ARCH_BOARD="stm32ldiscovery"
+
+#
+# Common Board Options
+#
+CONFIG_ARCH_HAVE_LEDS=y
+# CONFIG_ARCH_LEDS is not set
+CONFIG_ARCH_HAVE_BUTTONS=y
+CONFIG_ARCH_BUTTONS=y
+CONFIG_ARCH_HAVE_IRQBUTTONS=y
+# CONFIG_ARCH_IRQBUTTONS is not set
+CONFIG_NSH_MMCSDMINOR=0
+
+#
+# Board-Specific Options
+#
+
+#
+# RTOS Features
+#
+# CONFIG_BOARD_INITIALIZE is not set
+CONFIG_MSEC_PER_TICK=10
+CONFIG_RR_INTERVAL=200
+# CONFIG_SCHED_INSTRUMENTATION is not set
+CONFIG_TASK_NAME_SIZE=0
+# CONFIG_SCHED_HAVE_PARENT is not set
+# CONFIG_JULIAN_TIME is not set
+CONFIG_START_YEAR=2013
+CONFIG_START_MONTH=5
+CONFIG_START_DAY=19
+CONFIG_DEV_CONSOLE=y
+# CONFIG_MUTEX_TYPES is not set
+# CONFIG_PRIORITY_INHERITANCE is not set
+# CONFIG_FDCLONE_DISABLE is not set
+# CONFIG_FDCLONE_STDIO is not set
+CONFIG_SDCLONE_DISABLE=y
+CONFIG_SCHED_WAITPID=y
+# CONFIG_SCHED_STARTHOOK is not set
+# CONFIG_SCHED_ATEXIT is not set
+# CONFIG_SCHED_ONEXIT is not set
+CONFIG_USER_ENTRYPOINT="nsh_main"
+CONFIG_DISABLE_OS_API=y
+# CONFIG_DISABLE_CLOCK is not set
+CONFIG_DISABLE_POSIX_TIMERS=y
+# CONFIG_DISABLE_PTHREAD is not set
+# CONFIG_DISABLE_SIGNALS is not set
+CONFIG_DISABLE_MQUEUE=y
+CONFIG_DISABLE_ENVIRON=y
+
+#
+# Signal Numbers
+#
+CONFIG_SIG_SIGUSR1=1
+CONFIG_SIG_SIGUSR2=2
+CONFIG_SIG_SIGALARM=3
+CONFIG_SIG_SIGCONDTIMEDOUT=16
+
+#
+# Sizes of configurable things (0 disables)
+#
+CONFIG_MAX_TASKS=8
+CONFIG_MAX_TASK_ARGS=4
+CONFIG_NPTHREAD_KEYS=0
+CONFIG_NFILE_DESCRIPTORS=6
+CONFIG_NFILE_STREAMS=6
+CONFIG_NAME_MAX=32
+CONFIG_PREALLOC_MQ_MSGS=0
+CONFIG_MQ_MAXMSGSIZE=0
+CONFIG_MAX_WDOGPARMS=2
+CONFIG_PREALLOC_WDOGS=4
+CONFIG_PREALLOC_TIMERS=0
+
+#
+# Stack and heap information
+#
+CONFIG_IDLETHREAD_STACKSIZE=1024
+CONFIG_USERMAIN_STACKSIZE=1536
+CONFIG_PTHREAD_STACK_MIN=256
+CONFIG_PTHREAD_STACK_DEFAULT=1536
+
+#
+# Device Drivers
+#
+CONFIG_DISABLE_POLL=y
+CONFIG_DEV_NULL=y
+# CONFIG_DEV_ZERO is not set
+# CONFIG_LOOP is not set
+# CONFIG_RAMDISK is not set
+# CONFIG_CAN is not set
+# CONFIG_PWM is not set
+# CONFIG_I2C is not set
+CONFIG_ARCH_HAVE_I2CRESET=y
+# CONFIG_SPI is not set
+# CONFIG_RTC is not set
+# CONFIG_WATCHDOG is not set
+# CONFIG_ANALOG is not set
+# CONFIG_BCH is not set
+# CONFIG_INPUT is not set
+# CONFIG_LCD is not set
+# CONFIG_MMCSD is not set
+# CONFIG_MTD is not set
+# CONFIG_PIPES is not set
+# CONFIG_PM is not set
+# CONFIG_POWER is not set
+# CONFIG_SENSORS is not set
+CONFIG_SERIAL=y
+# CONFIG_DEV_LOWCONSOLE is not set
+# CONFIG_16550_UART is not set
+CONFIG_ARCH_HAVE_USART1=y
+CONFIG_MCU_SERIAL=y
+CONFIG_STANDARD_SERIAL=y
+CONFIG_USART1_SERIAL_CONSOLE=y
+# CONFIG_NO_SERIAL_CONSOLE is not set
+
+#
+# USART1 Configuration
+#
+CONFIG_USART1_RXBUFSIZE=64
+CONFIG_USART1_TXBUFSIZE=64
+CONFIG_USART1_BAUD=115200
+CONFIG_USART1_BITS=8
+CONFIG_USART1_PARITY=0
+CONFIG_USART1_2STOP=0
+# CONFIG_USBDEV is not set
+# CONFIG_USBHOST is not set
+# CONFIG_WIRELESS is not set
+
+#
+# System Logging Device Options
+#
+
+#
+# System Logging
+#
+# CONFIG_RAMLOG is not set
+
+#
+# Networking Support
+#
+# CONFIG_NET is not set
+
+#
+# File Systems
+#
+
+#
+# File system configuration
+#
+CONFIG_DISABLE_MOUNTPOINT=y
+# CONFIG_FS_RAMMAP is not set
+
+#
+# System Logging
+#
+# CONFIG_SYSLOG_ENABLE is not set
+# CONFIG_SYSLOG is not set
+
+#
+# Graphics Support
+#
+# CONFIG_NX is not set
+
+#
+# Memory Management
+#
+# CONFIG_MM_MULTIHEAP is not set
+CONFIG_MM_SMALL=y
+CONFIG_MM_REGIONS=1
+# CONFIG_GRAN is not set
+
+#
+# Binary Formats
+#
+CONFIG_BINFMT_DISABLE=y
+# CONFIG_PIC is not set
+# CONFIG_SYMTAB_ORDEREDBYNAME is not set
+
+#
+# Library Routines
+#
+
+#
+# Standard C Library Options
+#
+CONFIG_STDIO_BUFFER_SIZE=0
+CONFIG_STDIO_LINEBUFFER=y
+CONFIG_NUNGET_CHARS=0
+# CONFIG_LIBM is not set
+# CONFIG_NOPRINTF_FIELDWIDTH is not set
+# CONFIG_LIBC_FLOATINGPOINT is not set
+CONFIG_LIB_RAND_ORDER=1
+# CONFIG_EOL_IS_CR is not set
+# CONFIG_EOL_IS_LF is not set
+# CONFIG_EOL_IS_BOTH_CRLF is not set
+CONFIG_EOL_IS_EITHER_CRLF=y
+CONFIG_POSIX_SPAWN_PROXY_STACKSIZE=1024
+CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=1536
+# CONFIG_LIBC_STRERROR is not set
+# CONFIG_LIBC_PERROR_STDOUT is not set
+CONFIG_ARCH_LOWPUTC=y
+CONFIG_LIB_SENDFILE_BUFSIZE=512
+# CONFIG_ARCH_ROMGETC is not set
+# CONFIG_ARCH_OPTIMIZED_FUNCTIONS is not set
+
+#
+# Non-standard Library Support
+#
+# CONFIG_SCHED_WORKQUEUE is not set
+# CONFIG_LIB_KBDCODEC is not set
+
+#
+# Basic CXX Support
+#
+# CONFIG_C99_BOOL8 is not set
+# CONFIG_HAVE_CXX is not set
+
+#
+# Application Configuration
+#
+
+#
+# Built-In Applications
+#
+
+#
+# Examples
+#
+# CONFIG_EXAMPLES_BUTTONS is not set
+# CONFIG_EXAMPLES_CAN is not set
+# CONFIG_EXAMPLES_COMPOSITE is not set
+# CONFIG_EXAMPLES_DHCPD is not set
+# CONFIG_EXAMPLES_ELF is not set
+# CONFIG_EXAMPLES_FTPC is not set
+# CONFIG_EXAMPLES_FTPD is not set
+# CONFIG_EXAMPLES_HELLO is not set
+# CONFIG_EXAMPLES_HELLOXX is not set
+# CONFIG_EXAMPLES_JSON is not set
+# CONFIG_EXAMPLES_HIDKBD is not set
+# CONFIG_EXAMPLES_KEYPADTEST is not set
+# CONFIG_EXAMPLES_IGMP is not set
+# CONFIG_EXAMPLES_LCDRW is not set
+# CONFIG_EXAMPLES_MM is not set
+# CONFIG_EXAMPLES_MODBUS is not set
+# CONFIG_EXAMPLES_MOUNT is not set
+CONFIG_EXAMPLES_NSH=y
+# CONFIG_EXAMPLES_NULL is not set
+# CONFIG_EXAMPLES_NX is not set
+# CONFIG_EXAMPLES_NXCONSOLE is not set
+# CONFIG_EXAMPLES_NXFFS is not set
+# CONFIG_EXAMPLES_NXFLAT is not set
+# CONFIG_EXAMPLES_NXHELLO is not set
+# CONFIG_EXAMPLES_NXIMAGE is not set
+# CONFIG_EXAMPLES_NXLINES is not set
+# CONFIG_EXAMPLES_NXTEXT is not set
+# CONFIG_EXAMPLES_OSTEST is not set
+# CONFIG_EXAMPLES_PASHELLO is not set
+# CONFIG_EXAMPLES_PIPE is not set
+# CONFIG_EXAMPLES_POLL is not set
+# CONFIG_EXAMPLES_POSIXSPAWN is not set
+# CONFIG_EXAMPLES_QENCODER is not set
+# CONFIG_EXAMPLES_RGMP is not set
+# CONFIG_EXAMPLES_ROMFS is not set
+# CONFIG_EXAMPLES_SENDMAIL is not set
+# CONFIG_EXAMPLES_SERLOOP is not set
+# CONFIG_EXAMPLES_SMART is not set
+# CONFIG_EXAMPLES_TELNETD is not set
+# CONFIG_EXAMPLES_THTTPD is not set
+# CONFIG_EXAMPLES_TIFF is not set
+# CONFIG_EXAMPLES_TOUCHSCREEN is not set
+# CONFIG_EXAMPLES_UDP is not set
+# CONFIG_EXAMPLES_UIP is not set
+# CONFIG_EXAMPLES_USBSERIAL is not set
+# CONFIG_EXAMPLES_USBMSC is not set
+# CONFIG_EXAMPLES_USBTERM is not set
+# CONFIG_EXAMPLES_WATCHDOG is not set
+
+#
+# Graphics Support
+#
+# CONFIG_TIFF is not set
+
+#
+# Interpreters
+#
+# CONFIG_INTERPRETERS_FICL is not set
+# CONFIG_INTERPRETERS_PCODE is not set
+
+#
+# Network Utilities
+#
+
+#
+# Networking Utilities
+#
+# CONFIG_NETUTILS_CODECS is not set
+# CONFIG_NETUTILS_DHCPC is not set
+# CONFIG_NETUTILS_DHCPD is not set
+# CONFIG_NETUTILS_FTPC is not set
+# CONFIG_NETUTILS_FTPD is not set
+# CONFIG_NETUTILS_JSON is not set
+# CONFIG_NETUTILS_RESOLV is not set
+# CONFIG_NETUTILS_SMTP is not set
+# CONFIG_NETUTILS_TELNETD is not set
+# CONFIG_NETUTILS_TFTPC is not set
+# CONFIG_NETUTILS_THTTPD is not set
+# CONFIG_NETUTILS_UIPLIB is not set
+# CONFIG_NETUTILS_WEBCLIENT is not set
+
+#
+# FreeModBus
+#
+# CONFIG_MODBUS is not set
+
+#
+# NSH Library
+#
+CONFIG_NSH_LIBRARY=y
+
+#
+# Disable Individual commands
+#
+# CONFIG_NSH_DISABLE_CAT is not set
+CONFIG_NSH_DISABLE_CD=y
+CONFIG_NSH_DISABLE_CP=y
+CONFIG_NSH_DISABLE_DD=y
+# CONFIG_NSH_DISABLE_ECHO is not set
+# CONFIG_NSH_DISABLE_EXEC is not set
+# CONFIG_NSH_DISABLE_EXIT is not set
+# CONFIG_NSH_DISABLE_FREE is not set
+CONFIG_NSH_DISABLE_GET=y
+# CONFIG_NSH_DISABLE_HELP is not set
+# CONFIG_NSH_DISABLE_HEXDUMP is not set
+CONFIG_NSH_DISABLE_IFCONFIG=y
+# CONFIG_NSH_DISABLE_KILL is not set
+CONFIG_NSH_DISABLE_LOSETUP=y
+# CONFIG_NSH_DISABLE_LS is not set
+# CONFIG_NSH_DISABLE_MB is not set
+CONFIG_NSH_DISABLE_MKDIR=y
+CONFIG_NSH_DISABLE_MKFATFS=y
+# CONFIG_NSH_DISABLE_MKFIFO is not set
+CONFIG_NSH_DISABLE_MKRD=y
+# CONFIG_NSH_DISABLE_MH is not set
+CONFIG_NSH_DISABLE_MOUNT=y
+# CONFIG_NSH_DISABLE_MW is not set
+CONFIG_NSH_DISABLE_NSFMOUNT=y
+# CONFIG_NSH_DISABLE_PS is not set
+CONFIG_NSH_DISABLE_PING=y
+CONFIG_NSH_DISABLE_PUT=y
+# CONFIG_NSH_DISABLE_PWD is not set
+CONFIG_NSH_DISABLE_RM=y
+CONFIG_NSH_DISABLE_RMDIR=y
+# CONFIG_NSH_DISABLE_SET is not set
+# CONFIG_NSH_DISABLE_SH is not set
+# CONFIG_NSH_DISABLE_SLEEP is not set
+# CONFIG_NSH_DISABLE_TEST is not set
+CONFIG_NSH_DISABLE_UMOUNT=y
+# CONFIG_NSH_DISABLE_UNSET is not set
+# CONFIG_NSH_DISABLE_USLEEP is not set
+CONFIG_NSH_DISABLE_WGET=y
+# CONFIG_NSH_DISABLE_XD is not set
+
+#
+# Configure Command Options
+#
+# CONFIG_NSH_CMDOPT_DF_H is not set
+CONFIG_NSH_CODECS_BUFSIZE=128
+CONFIG_NSH_FILEIOSIZE=64
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_NESTDEPTH=3
+CONFIG_NSH_DISABLESCRIPT=y
+# CONFIG_NSH_DISABLEBG is not set
+CONFIG_NSH_CONSOLE=y
+
+#
+# USB Trace Support
+#
+# CONFIG_NSH_CONDEV is not set
+# CONFIG_NSH_ARCHINIT is not set
+
+#
+# NxWidgets/NxWM
+#
+
+#
+# System NSH Add-Ons
+#
+
+#
+# Custom Free Memory Command
+#
+# CONFIG_SYSTEM_FREE is not set
+
+#
+# I2C tool
+#
+
+#
+# FLASH Program Installation
+#
+# CONFIG_SYSTEM_INSTALL is not set
+
+#
+# FLASH Erase-all Command
+#
+
+#
+# readline()
+#
+CONFIG_SYSTEM_READLINE=y
+CONFIG_READLINE_ECHO=y
+
+#
+# Power Off
+#
+# CONFIG_SYSTEM_POWEROFF is not set
+
+#
+# RAMTRON
+#
+# CONFIG_SYSTEM_RAMTRON is not set
+
+#
+# SD Card
+#
+# CONFIG_SYSTEM_SDCARD is not set
+
+#
+# Sysinfo
+#
+# CONFIG_SYSTEM_SYSINFO is not set
+
+#
+# USB Monitor
+#
diff --git a/nuttx/configs/stm32ldiscovery/nsh/setenv.sh b/nuttx/configs/stm32ldiscovery/nsh/setenv.sh
new file mode 100755
index 000000000..0a1e71720
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/nsh/setenv.sh
@@ -0,0 +1,75 @@
+#!/bin/bash
+# configs/stm32f3discovery/nsh/setenv.sh
+#
+# Copyright (C) 2013 Gregory Nutt. All rights reserved.
+# Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+# used to endorse or promote products derived from this software
+# without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+if [ "$_" = "$0" ] ; then
+ echo "You must source this script, not run it!" 1>&2
+ exit 1
+fi
+
+WD=`pwd`
+if [ ! -x "setenv.sh" ]; then
+ echo "This script must be executed from the top-level NuttX build directory"
+ exit 1
+fi
+
+if [ -z "${PATH_ORIG}" ]; then
+ export PATH_ORIG="${PATH}"
+fi
+
+# This is the Cygwin path to the location where I installed the RIDE
+# toolchain under windows. You will also have to edit this if you install
+# the RIDE toolchain in any other location
+#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/Raisonance/Ride/arm-gcc/bin"
+
+# This is the Cygwin path to the location where I installed the CodeSourcery
+# toolchain under windows. You will also have to edit this if you install
+# the CodeSourcery toolchain in any other location
+export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery G++ Lite/bin"
+
+# These are the Cygwin paths to the locations where I installed the Atollic
+# toolchain under windows. You will also have to edit this if you install
+# the Atollic toolchain in any other location. /usr/bin is added before
+# the Atollic bin path because there is are binaries named gcc.exe and g++.exe
+# at those locations as well.
+#export TOOLCHAIN_BIN="/usr/bin:/cygdrive/c/Program Files (x86)/Atollic/TrueSTUDIO for ARM Pro 2.3.0/ARMTools/bin"
+#export TOOLCHAIN_BIN="/usr/bin:/cygdrive/c/Program Files (x86)/Atollic/TrueSTUDIO for STMicroelectronics STM32 Lite 2.3.0/ARMTools/bin"
+
+# This is the Cygwin path to the location where I build the buildroot
+# toolchain.
+#export TOOLCHAIN_BIN="${WD}/../misc/buildroot/build_arm_nofpu/staging_dir/bin"
+
+# Add the path to the toolchain to the PATH varialble
+export PATH="${TOOLCHAIN_BIN}:/sbin:/usr/sbin:${PATH_ORIG}"
+
+echo "PATH : ${PATH}"
diff --git a/nuttx/configs/stm32ldiscovery/scripts/gnu-elf.ld b/nuttx/configs/stm32ldiscovery/scripts/gnu-elf.ld
new file mode 100644
index 000000000..54e483a12
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/scripts/gnu-elf.ld
@@ -0,0 +1,129 @@
+/****************************************************************************
+ * configs/stm32f3discovery/scripts/gnu-elf.ld
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+SECTIONS
+{
+ .text 0x00000000 :
+ {
+ _stext = . ;
+ *(.text)
+ *(.text.*)
+ *(.gnu.warning)
+ *(.stub)
+ *(.glue_7)
+ *(.glue_7t)
+ *(.jcr)
+
+ /* C++ support: The .init and .fini sections contain specific logic
+ * to manage static constructors and destructors.
+ */
+
+ *(.gnu.linkonce.t.*)
+ *(.init) /* Old ABI */
+ *(.fini) /* Old ABI */
+ _etext = . ;
+ }
+
+ .rodata :
+ {
+ _srodata = . ;
+ *(.rodata)
+ *(.rodata1)
+ *(.rodata.*)
+ *(.gnu.linkonce.r*)
+ _erodata = . ;
+ }
+
+ .data :
+ {
+ _sdata = . ;
+ *(.data)
+ *(.data1)
+ *(.data.*)
+ *(.gnu.linkonce.d*)
+ _edata = . ;
+ }
+
+ /* C++ support. For each global and static local C++ object,
+ * GCC creates a small subroutine to construct the object. Pointers
+ * to these routines (not the routines themselves) are stored as
+ * simple, linear arrays in the .ctors section of the object file.
+ * Similarly, pointers to global/static destructor routines are
+ * stored in .dtors.
+ */
+
+ .ctors :
+ {
+ _sctors = . ;
+ *(.ctors) /* Old ABI: Unallocated */
+ *(.init_array) /* New ABI: Allocated */
+ _edtors = . ;
+ }
+
+ .dtors :
+ {
+ _sdtors = . ;
+ *(.dtors) /* Old ABI: Unallocated */
+ *(.fini_array) /* New ABI: Allocated */
+ _edtors = . ;
+ }
+
+ .bss :
+ {
+ _sbss = . ;
+ *(.bss)
+ *(.bss.*)
+ *(.sbss)
+ *(.sbss.*)
+ *(.gnu.linkonce.b*)
+ *(COMMON)
+ _ebss = . ;
+ }
+
+ /* Stabs debugging sections. */
+
+ .stab 0 : { *(.stab) }
+ .stabstr 0 : { *(.stabstr) }
+ .stab.excl 0 : { *(.stab.excl) }
+ .stab.exclstr 0 : { *(.stab.exclstr) }
+ .stab.index 0 : { *(.stab.index) }
+ .stab.indexstr 0 : { *(.stab.indexstr) }
+ .comment 0 : { *(.comment) }
+ .debug_abbrev 0 : { *(.debug_abbrev) }
+ .debug_info 0 : { *(.debug_info) }
+ .debug_line 0 : { *(.debug_line) }
+ .debug_pubnames 0 : { *(.debug_pubnames) }
+ .debug_aranges 0 : { *(.debug_aranges) }
+}
diff --git a/nuttx/configs/stm32ldiscovery/scripts/ld.script b/nuttx/configs/stm32ldiscovery/scripts/ld.script
new file mode 100644
index 000000000..b684bc54b
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/scripts/ld.script
@@ -0,0 +1,117 @@
+/****************************************************************************
+ * configs/stm32f3discovery/scripts/ld.script
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* The STM32F303VCT has 256Kb of FLASH beginning at address 0x0800:0000 and
+ * 40Kb of SRAM.
+ *
+ * When booting from FLASH, FLASH memory is aliased to address 0x0000:0000
+ * where the code expects to begin execution by jumping to the entry point in
+ * the 0x0800:0000 address range.
+ */
+
+MEMORY
+{
+ flash (rx) : ORIGIN = 0x08000000, LENGTH = 256K
+ sram (rwx) : ORIGIN = 0x20000000, LENGTH = 40K
+}
+
+OUTPUT_ARCH(arm)
+ENTRY(_stext)
+SECTIONS
+{
+ .text : {
+ _stext = ABSOLUTE(.);
+ *(.vectors)
+ *(.text .text.*)
+ *(.fixup)
+ *(.gnu.warning)
+ *(.rodata .rodata.*)
+ *(.gnu.linkonce.t.*)
+ *(.glue_7)
+ *(.glue_7t)
+ *(.got)
+ *(.gcc_except_table)
+ *(.gnu.linkonce.r.*)
+ _etext = ABSOLUTE(.);
+ } > flash
+
+ .init_section : {
+ _sinit = ABSOLUTE(.);
+ *(.init_array .init_array.*)
+ _einit = ABSOLUTE(.);
+ } > flash
+
+ .ARM.extab : {
+ *(.ARM.extab*)
+ } > flash
+
+ __exidx_start = ABSOLUTE(.);
+ .ARM.exidx : {
+ *(.ARM.exidx*)
+ } > flash
+ __exidx_end = ABSOLUTE(.);
+
+ _eronly = ABSOLUTE(.);
+
+ .data : {
+ _sdata = ABSOLUTE(.);
+ *(.data .data.*)
+ *(.gnu.linkonce.d.*)
+ CONSTRUCTORS
+ _edata = ABSOLUTE(.);
+ } > sram AT > flash
+
+ .bss : {
+ _sbss = ABSOLUTE(.);
+ *(.bss .bss.*)
+ *(.gnu.linkonce.b.*)
+ *(COMMON)
+ _ebss = ABSOLUTE(.);
+ } > sram
+
+ /* Stabs debugging sections. */
+ .stab 0 : { *(.stab) }
+ .stabstr 0 : { *(.stabstr) }
+ .stab.excl 0 : { *(.stab.excl) }
+ .stab.exclstr 0 : { *(.stab.exclstr) }
+ .stab.index 0 : { *(.stab.index) }
+ .stab.indexstr 0 : { *(.stab.indexstr) }
+ .comment 0 : { *(.comment) }
+ .debug_abbrev 0 : { *(.debug_abbrev) }
+ .debug_info 0 : { *(.debug_info) }
+ .debug_line 0 : { *(.debug_line) }
+ .debug_pubnames 0 : { *(.debug_pubnames) }
+ .debug_aranges 0 : { *(.debug_aranges) }
+}
diff --git a/nuttx/configs/stm32ldiscovery/src/Makefile b/nuttx/configs/stm32ldiscovery/src/Makefile
new file mode 100644
index 000000000..e37f46609
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/src/Makefile
@@ -0,0 +1,122 @@
+############################################################################
+# configs/stm32ldiscovery/src/Makefile
+#
+# Copyright (C) 2013 Gregory Nutt. All rights reserved.
+# Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+# used to endorse or promote products derived from this software
+# without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+-include $(TOPDIR)/Make.defs
+
+CFLAGS += -I$(TOPDIR)/sched
+
+ASRCS =
+AOBJS = $(ASRCS:.S=$(OBJEXT))
+
+CSRCS = stm32_boot.c stm32_spi.c
+
+ifeq ($(CONFIG_HAVE_CXX),y)
+CSRCS += stm32_cxxinitialize.c
+endif
+
+ifeq ($(CONFIG_ARCH_LEDS),y)
+CSRCS += stm32_autoleds.c
+else
+CSRCS += stm32_userleds.c
+endif
+
+ifeq ($(CONFIG_ARCH_BUTTONS),y)
+CSRCS += stm32_buttons.c
+endif
+
+ifeq ($(CONFIG_STM32_USB),y)
+CSRCS += stm32_usb.c
+endif
+
+ifeq ($(CONFIG_PWM),y)
+CSRCS += stm32_pwm.c
+endif
+
+ifeq ($(CONFIG_QENCODER),y)
+CSRCS += stm32_qencoder.c
+endif
+
+ifeq ($(CONFIG_WATCHDOG),y)
+CSRCS += stm32_watchdog.c
+endif
+
+ifeq ($(CONFIG_NSH_ARCHINIT),y)
+CSRCS += stm32_nsh.c
+endif
+
+COBJS = $(CSRCS:.c=$(OBJEXT))
+
+SRCS = $(ASRCS) $(CSRCS)
+OBJS = $(AOBJS) $(COBJS)
+
+ARCH_SRCDIR = $(TOPDIR)/arch/$(CONFIG_ARCH)/src
+ifeq ($(CONFIG_WINDOWS_NATIVE),y)
+ CFLAGS += -I$(ARCH_SRCDIR)\chip -I$(ARCH_SRCDIR)\common -I$(ARCH_SRCDIR)\armv7-m
+else
+ifeq ($(WINTOOL),y)
+ CFLAGS += -I "${shell cygpath -w $(ARCH_SRCDIR)/chip}" \
+ -I "${shell cygpath -w $(ARCH_SRCDIR)/common}" \
+ -I "${shell cygpath -w $(ARCH_SRCDIR)/armv7-m}"
+else
+ CFLAGS += -I$(ARCH_SRCDIR)/chip -I$(ARCH_SRCDIR)/common -I$(ARCH_SRCDIR)/armv7-m
+endif
+endif
+
+all: libboard$(LIBEXT)
+
+$(AOBJS): %$(OBJEXT): %.S
+ $(call ASSEMBLE, $<, $@)
+
+$(COBJS) $(LINKOBJS): %$(OBJEXT): %.c
+ $(call COMPILE, $<, $@)
+
+libboard$(LIBEXT): $(OBJS)
+ $(call ARCHIVE, $@, $(OBJS))
+
+.depend: Makefile $(SRCS)
+ $(Q) $(MKDEP) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
+ $(Q) touch $@
+
+depend: .depend
+
+clean:
+ $(call DELFILE, libboard$(LIBEXT))
+ $(call CLEAN)
+
+distclean: clean
+ $(call DELFILE, Make.dep)
+ $(call DELFILE, .depend)
+
+-include Make.dep
diff --git a/nuttx/configs/stm32ldiscovery/src/stm32_autoleds.c b/nuttx/configs/stm32ldiscovery/src/stm32_autoleds.c
new file mode 100644
index 000000000..5a113eabc
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/src/stm32_autoleds.c
@@ -0,0 +1,153 @@
+/****************************************************************************
+ * configs/stm32ldiscovery/src/up_autoleds.c
+ * arch/arm/src/board/up_autoleds.c
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <arch/board/board.h>
+
+#include "chip.h"
+#include "stm32.h"
+#include "stm32ldiscovery.h"
+
+#ifdef CONFIG_ARCH_LEDS
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+/* If CONFIG_ARCH_LEDs is defined, then NuttX will control the 8 LEDs on
+ * board the STM32L-Discovery. The following definitions describe how NuttX
+ * controls the LEDs:
+ *
+ * SYMBOL Meaning LED state
+ * LED3 LED4
+ * ------------------- ----------------------- -------- --------
+ * LED_STARTED NuttX has been started OFF OFF
+ * LED_HEAPALLOCATE Heap has been allocated OFF OFF
+ * LED_IRQSENABLED Interrupts enabled OFF OFF
+ * LED_STACKCREATED Idle stack created ON OFF
+ * LED_INIRQ In an interrupt No change
+ * LED_SIGNAL In a signal handler No change
+ * LED_ASSERTION An assertion failed No change
+ * LED_PANIC The system has crashed OFF Blinking
+ * LED_IDLE STM32 is is sleep mode Not used
+ */
+
+/* CONFIG_DEBUG_LEDS enables debug output from this file (needs CONFIG_DEBUG
+ * with CONFIG_DEBUG_VERBOSE too)
+ */
+
+#ifdef CONFIG_DEBUG_LEDS
+# define leddbg lldbg
+# define ledvdbg llvdbg
+#else
+# define leddbg(x...)
+# define ledvdbg(x...)
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_ledinit
+ ****************************************************************************/
+
+void up_ledinit(void)
+{
+ /* Configure LED1-2 GPIOs for output */
+
+ stm32_configgpio(GPIO_LED1);
+ stm32_configgpio(GPIO_LED2);
+}
+
+/****************************************************************************
+ * Name: up_ledon
+ ****************************************************************************/
+
+void up_ledon(int led)
+{
+ bool led1on = false;
+ bool led2on = false;
+
+ switch (led)
+ {
+ case 0: /* LED_STARTED, LED_HEAPALLOCATE, LED_IRQSENABLED */
+ break;
+
+ case 1: /* LED_STACKCREATED */
+ led1on = true;
+ break;
+
+ default:
+ case 2: /* LED_INIRQ, LED_SIGNAL, LED_ASSERTION */
+ return;
+
+ case 3: /* LED_PANIC */
+ led2on = true;
+ break;
+ }
+
+ stm32_gpiowrite(GPIO_LED1, led1on);
+ stm32_gpiowrite(GPIO_LED2, led2on);
+}
+
+/****************************************************************************
+ * Name: up_ledoff
+ ****************************************************************************/
+
+void up_ledoff(int led)
+{
+ stm32_gpiowrite(GPIO_LED1, false);
+ stm32_gpiowrite(GPIO_LED2, false);
+}
+
+#endif /* CONFIG_ARCH_LEDS */
diff --git a/nuttx/configs/stm32ldiscovery/src/stm32_boot.c b/nuttx/configs/stm32ldiscovery/src/stm32_boot.c
new file mode 100644
index 000000000..b45f57204
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/src/stm32_boot.c
@@ -0,0 +1,102 @@
+/************************************************************************************
+ * configs/stm32ldiscovery/src/up_boot.c
+ * arch/arm/src/board/up_boot.c
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <debug.h>
+
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "stm32ldiscovery.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: stm32_boardinitialize
+ *
+ * Description:
+ * All STM32 architectures must provide the following entry point. This entry point
+ * is called early in the intitialization -- after all memory has been configured
+ * and mapped but before any devices have been initialized.
+ *
+ ************************************************************************************/
+
+void stm32_boardinitialize(void)
+{
+ /* Configure SPI chip selects if 1) SPI is not disabled, and 2) the weak function
+ * stm32_spiinitialize() has been brought into the link.
+ */
+
+#if defined(CONFIG_STM32_SPI1) || defined(CONFIG_STM32_SPI2) || defined(CONFIG_STM32_SPI3)
+ if (stm32_spiinitialize)
+ {
+ stm32_spiinitialize();
+ }
+#endif
+
+ /* Initialize USB if the 1) USB device controller is in the configuration and 2)
+ * disabled, and 3) the weak function stm32_usbinitialize() has been brought
+ * into the build. Presumeably either CONFIG_USBDEV is also selected.
+ */
+
+#ifdef CONFIG_STM32_USB
+ if (stm32_usbinitialize)
+ {
+ stm32_usbinitialize();
+ }
+#endif
+
+ /* Configure on-board LEDs if LED support has been selected. */
+
+#ifdef CONFIG_ARCH_LEDS
+ up_ledinit();
+#endif
+}
diff --git a/nuttx/configs/stm32ldiscovery/src/stm32_buttons.c b/nuttx/configs/stm32ldiscovery/src/stm32_buttons.c
new file mode 100644
index 000000000..7ab7debda
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/src/stm32_buttons.c
@@ -0,0 +1,166 @@
+/****************************************************************************
+ * configs/stm32ldiscovery/src/up_buttons.c
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+
+#include <arch/board/board.h>
+#include "stm32ldiscovery.h"
+
+#ifdef CONFIG_ARCH_BUTTONS
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/* Pin configuration for each STM32F3Discovery button. This array is indexed by
+ * the BUTTON_* definitions in board.h
+ */
+
+static const uint16_t g_buttons[NUM_BUTTONS] =
+{
+ GPIO_BTN_USER
+};
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_buttoninit
+ *
+ * Description:
+ * up_buttoninit() must be called to initialize button resources. After
+ * that, up_buttons() may be called to collect the current state of all
+ * buttons or up_irqbutton() may be called to register button interrupt
+ * handlers.
+ *
+ ****************************************************************************/
+
+void up_buttoninit(void)
+{
+ int i;
+
+ /* Configure the GPIO pins as inputs. NOTE that EXTI interrupts are
+ * configured for all pins.
+ */
+
+ for (i = 0; i < NUM_BUTTONS; i++)
+ {
+ stm32_configgpio(g_buttons[i]);
+ }
+}
+
+/****************************************************************************
+ * Name: up_buttons
+ ****************************************************************************/
+
+uint8_t up_buttons(void)
+{
+ uint8_t ret = 0;
+ int i;
+
+ /* Check that state of each key */
+
+ for (i = 0; i < NUM_BUTTONS; i++)
+ {
+ /* A LOW value means that the key is pressed.
+ */
+
+ bool released = stm32_gpioread(g_buttons[i]);
+
+ /* Accumulate the set of depressed (not released) keys */
+
+ if (!released)
+ {
+ ret |= (1 << i);
+ }
+ }
+
+ return ret;
+}
+
+/************************************************************************************
+ * Button support.
+ *
+ * Description:
+ * up_buttoninit() must be called to initialize button resources. After
+ * that, up_buttons() may be called to collect the current state of all
+ * buttons or up_irqbutton() may be called to register button interrupt
+ * handlers.
+ *
+ * After up_buttoninit() has been called, up_buttons() may be called to
+ * collect the state of all buttons. up_buttons() returns an 8-bit bit set
+ * with each bit associated with a button. See the BUTTON_*_BIT
+ * definitions in board.h for the meaning of each bit.
+ *
+ * up_irqbutton() may be called to register an interrupt handler that will
+ * be called when a button is depressed or released. The ID value is a
+ * button enumeration value that uniquely identifies a button resource. See the
+ * BUTTON_* definitions in board.h for the meaning of enumeration
+ * value. The previous interrupt handler address is returned (so that it may
+ * restored, if so desired).
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_ARCH_IRQBUTTONS
+xcpt_t up_irqbutton(int id, xcpt_t irqhandler)
+{
+ xcpt_t oldhandler = NULL;
+
+ /* The following should be atomic */
+
+ if (id >= MIN_IRQBUTTON && id <= MAX_IRQBUTTON)
+ {
+ oldhandler = stm32_gpiosetevent(g_buttons[id], true, true, true, irqhandler);
+ }
+
+ return oldhandler;
+}
+#endif
+#endif /* CONFIG_ARCH_BUTTONS */
diff --git a/nuttx/configs/stm32ldiscovery/src/stm32_cxxinitialize.c b/nuttx/configs/stm32ldiscovery/src/stm32_cxxinitialize.c
new file mode 100644
index 000000000..45b40b9d0
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/src/stm32_cxxinitialize.c
@@ -0,0 +1,155 @@
+/************************************************************************************
+ * configs/stm32ldiscovery/src/up_cxxinitialize.c
+ * arch/arm/src/board/up_cxxinitialize.c
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <debug.h>
+
+#include <nuttx/arch.h>
+
+#include <arch/stm32/chip.h>
+#include "chip.h"
+
+#if defined(CONFIG_HAVE_CXX) && defined(CONFIG_HAVE_CXXINITIALIZE)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+/* Debug ****************************************************************************/
+/* Non-standard debug that may be enabled just for testing the static constructors */
+
+#ifndef CONFIG_DEBUG
+# undef CONFIG_DEBUG_CXX
+#endif
+
+#ifdef CONFIG_DEBUG_CXX
+# define cxxdbg dbg
+# define cxxlldbg lldbg
+# ifdef CONFIG_DEBUG_VERBOSE
+# define cxxvdbg vdbg
+# define cxxllvdbg llvdbg
+# else
+# define cxxvdbg(x...)
+# define cxxllvdbg(x...)
+# endif
+#else
+# define cxxdbg(x...)
+# define cxxlldbg(x...)
+# define cxxvdbg(x...)
+# define cxxllvdbg(x...)
+#endif
+
+/************************************************************************************
+ * Private Types
+ ************************************************************************************/
+/* This type defines one entry in initialization array */
+
+typedef void (*initializer_t)(void);
+
+/************************************************************************************
+ * External references
+ ************************************************************************************/
+/* _sinit and _einit are symbols exported by the linker script that mark the
+ * beginning and the end of the C++ initialization section.
+ */
+
+extern initializer_t _sinit;
+extern initializer_t _einit;
+
+/* _stext and _etext are symbols exported by the linker script that mark the
+ * beginning and the end of text.
+ */
+
+extern uint32_t _stext;
+extern uint32_t _etext;
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/****************************************************************************
+ * Name: up_cxxinitialize
+ *
+ * Description:
+ * If C++ and C++ static constructors are supported, then this function
+ * must be provided by board-specific logic in order to perform
+ * initialization of the static C++ class instances.
+ *
+ * This function should then be called in the application-specific
+ * user_start logic in order to perform the C++ initialization. NOTE
+ * that no component of the core NuttX RTOS logic is involved; This
+ * function defintion only provides the 'contract' between application
+ * specific C++ code and platform-specific toolchain support
+ *
+ ***************************************************************************/
+
+void up_cxxinitialize(void)
+{
+ initializer_t *initp;
+
+ cxxdbg("_sinit: %p _einit: %p _stext: %p _etext: %p\n",
+ &_sinit, &_einit, &_stext, &_etext);
+
+ /* Visit each entry in the initialzation table */
+
+ for (initp = &_sinit; initp != &_einit; initp++)
+ {
+ initializer_t initializer = *initp;
+ cxxdbg("initp: %p initializer: %p\n", initp, initializer);
+
+ /* Make sure that the address is non-NULL and lies in the text region
+ * defined by the linker script. Some toolchains may put NULL values
+ * or counts in the initialization table
+ */
+
+ if ((void*)initializer > (void*)&_stext && (void*)initializer < (void*)&_etext)
+ {
+ cxxdbg("Calling %p\n", initializer);
+ initializer();
+ }
+ }
+}
+
+#endif /* CONFIG_HAVE_CXX && CONFIG_HAVE_CXXINITIALIZE */
+
diff --git a/nuttx/configs/stm32ldiscovery/src/stm32_nsh.c b/nuttx/configs/stm32ldiscovery/src/stm32_nsh.c
new file mode 100644
index 000000000..7924b5dd0
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/src/stm32_nsh.c
@@ -0,0 +1,129 @@
+/****************************************************************************
+ * config/stm32ldiscovery/src/up_nsh.c
+ * arch/arm/src/board/up_nsh.c
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <debug.h>
+#include <errno.h>
+
+#ifdef CONFIG_SYSTEM_USBMONITOR
+# include <apps/usbmonitor.h>
+#endif
+
+#include "stm32.h"
+#include "stm32ldiscovery.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Configuration ************************************************************/
+
+#define HAVE_USBDEV 1
+#define HAVE_USBMONITOR 1
+
+/* Can't support USB device features if the STM32 USB peripheral is not
+ * enabled.
+ */
+
+#ifndef CONFIG_STM32_USB
+# undef HAVE_USBDEV
+# undef HAVE_USBMONITOR
+#endif
+
+/* Can't support USB device is USB device is not enabled */
+
+#ifndef CONFIG_USBDEV
+# undef HAVE_USBDEV
+# undef HAVE_USBMONITOR
+#endif
+
+/* Check if we should enable the USB monitor before starting NSH */
+
+#if !defined(CONFIG_USBDEV_TRACE) || !defined(CONFIG_SYSTEM_USBMONITOR)
+# undef HAVE_USBMONITOR
+#endif
+
+/* Debug ********************************************************************/
+
+#ifdef CONFIG_CPP_HAVE_VARARGS
+# ifdef CONFIG_DEBUG
+# define message(...) lowsyslog(__VA_ARGS__)
+# else
+# define message(...) printf(__VA_ARGS__)
+# endif
+#else
+# ifdef CONFIG_DEBUG
+# define message lowsyslog
+# else
+# define message printf
+# endif
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nsh_archinitialize
+ *
+ * Description:
+ * Perform architecture specific initialization
+ *
+ ****************************************************************************/
+
+int nsh_archinitialize(void)
+{
+#ifdef HAVE_USBMONITOR
+ int ret;
+
+ /* Start the USB Monitor */
+
+ ret = usbmonitor_start(0, NULL);
+ if (ret != OK)
+ {
+ message("nsh_archinitialize: Start USB monitor: %d\n", ret);
+ }
+#endif
+
+ return OK;
+}
diff --git a/nuttx/configs/stm32ldiscovery/src/stm32_pwm.c b/nuttx/configs/stm32ldiscovery/src/stm32_pwm.c
new file mode 100644
index 000000000..c8255da40
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/src/stm32_pwm.c
@@ -0,0 +1,142 @@
+/************************************************************************************
+ * configs/stm32ldiscovery/src/up_pwm.c
+ * arch/arm/src/board/up_pwm.c
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/pwm.h>
+#include <arch/board/board.h>
+
+#include "chip.h"
+#include "up_arch.h"
+#include "stm32_pwm.h"
+#include "stm32ldiscovery.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+/* Configuration *******************************************************************/
+/* PWM
+ *
+ * The stm32ldiscovery has no real on-board PWM devices, but the board can be configured to output
+ * a pulse train using TIM4 CH2. This pin is used by FSMC is connect to CN5 just for this
+ * purpose:
+ *
+ * PD13 FSMC_A18 / MC_TIM4_CH2OUT pin 33 (EnB)
+ *
+ * FSMC must be disabled in this case!
+ */
+
+#define HAVE_PWM 1
+
+#ifndef CONFIG_PWM
+# undef HAVE_PWM
+#endif
+
+#ifndef CONFIG_STM32_TIM4
+# undef HAVE_PWM
+#endif
+
+#ifndef CONFIG_STM32_TIM4_PWM
+# undef HAVE_PWM
+#endif
+
+#if CONFIG_STM32_TIM4_CHANNEL != STM32F3DISCOVERY_PWMCHANNEL
+# undef HAVE_PWM
+#endif
+
+#ifdef HAVE_PWM
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: pwm_devinit
+ *
+ * Description:
+ * All STM32 architectures must provide the following interface to work with
+ * examples/pwm.
+ *
+ ************************************************************************************/
+
+int pwm_devinit(void)
+{
+ static bool initialized = false;
+ struct pwm_lowerhalf_s *pwm;
+ int ret;
+
+ /* Have we already initialized? */
+
+ if (!initialized)
+ {
+ /* Call stm32_pwminitialize() to get an instance of the PWM interface */
+
+ pwm = stm32_pwminitialize(STM32F3DISCOVERY_PWMTIMER);
+ if (!pwm)
+ {
+ dbg("Failed to get the STM32 PWM lower half\n");
+ return -ENODEV;
+ }
+
+ /* Register the PWM driver at "/dev/pwm0" */
+
+ ret = pwm_register("/dev/pwm0", pwm);
+ if (ret < 0)
+ {
+ adbg("pwm_register failed: %d\n", ret);
+ return ret;
+ }
+
+ /* Now we are initialized */
+
+ initialized = true;
+ }
+
+ return OK;
+}
+
+#endif /* HAVE_PWM */
diff --git a/nuttx/configs/stm32ldiscovery/src/stm32_qencoder.c b/nuttx/configs/stm32ldiscovery/src/stm32_qencoder.c
new file mode 100644
index 000000000..1c04f9c29
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/src/stm32_qencoder.c
@@ -0,0 +1,187 @@
+/************************************************************************************
+ * configs/stm32ldiscovery/src/up_qencoder.c
+ * arch/arm/src/board/up_qencoder.c
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/sensors/qencoder.h>
+#include <arch/board/board.h>
+
+#include "chip.h"
+#include "up_arch.h"
+#include "stm32_qencoder.h"
+#include "stm32ldiscovery.h"
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+/* Configuration *******************************************************************/
+/* Check if we have a timer configured for quadrature encoder -- assume YES. */
+
+#define HAVE_QENCODER 1
+
+/* If TIMn is not enabled (via CONFIG_STM32_TIMn), then the configuration cannot
+ * specify TIMn as a quadrature encoder (via CONFIG_STM32_TIMn_QE).
+ */
+
+#ifndef CONFIG_STM32_TIM1
+# undef CONFIG_STM32_TIM1_QE
+#endif
+#ifndef CONFIG_STM32_TIM2
+# undef CONFIG_STM32_TIM2_QE
+#endif
+#ifndef CONFIG_STM32_TIM3
+# undef CONFIG_STM32_TIM3_QE
+#endif
+#ifndef CONFIG_STM32_TIM4
+# undef CONFIG_STM32_TIM4_QE
+#endif
+#ifndef CONFIG_STM32_TIM5
+# undef CONFIG_STM32_TIM5_QE
+#endif
+#ifndef CONFIG_STM32_TIM8
+# undef CONFIG_STM32_TIM8_QE
+#endif
+
+/* If the upper-half quadrature encoder driver is not enabled, then we cannot
+ * support the quadrature encoder.
+ */
+
+#ifndef CONFIG_QENCODER
+# undef HAVE_QENCODER
+#endif
+
+/* Which Timer should we use, TIMID={1,2,3,4,5,8}. If multiple timers are
+ * configured as quadrature encoders, this logic will arbitrarily select
+ * the lowest numbered timer.
+ *
+ * At least one TIMn, n={1,2,3,4,5,8}, must be both enabled and configured
+ * as a quadrature encoder in order to support the lower half quadrature
+ * encoder driver. The above check assures that if CONFIG_STM32_TIMn_QE
+ * is defined, then the correspdonding TIMn is also enabled.
+ */
+
+#if defined CONFIG_STM32_TIM1_QE
+# define TIMID 1
+#elif defined CONFIG_STM32_TIM2_QE
+# define TIMID 2
+#elif defined CONFIG_STM32_TIM3_QE
+# define TIMID 3
+#elif defined CONFIG_STM32_TIM4_QE
+# define TIMID 4
+#elif defined CONFIG_STM32_TIM5_QE
+# define TIMID 5
+#elif defined CONFIG_STM32_TIM8_QE
+# define TIMID 8
+#else
+# undef HAVE_QENCODER
+#endif
+
+#ifdef HAVE_QENCODER
+
+/* Debug ***************************************************************************/
+/* Non-standard debug that may be enabled just for testing the quadrature encoder */
+
+#ifndef CONFIG_DEBUG
+# undef CONFIG_DEBUG_QENCODER
+#endif
+
+#ifdef CONFIG_DEBUG_QENCODER
+# define qedbg dbg
+# define qelldbg lldbg
+# ifdef CONFIG_DEBUG_VERBOSE
+# define qevdbg vdbg
+# define qellvdbg llvdbg
+# else
+# define qevdbg(x...)
+# define qellvdbg(x...)
+# endif
+#else
+# define qedbg(x...)
+# define qelldbg(x...)
+# define qevdbg(x...)
+# define qellvdbg(x...)
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: qe_devinit
+ *
+ * Description:
+ * All STM32 architectures must provide the following interface to work with
+ * examples/qencoder.
+ *
+ ************************************************************************************/
+
+int qe_devinit(void)
+{
+ static bool initialized = false;
+ int ret;
+
+ /* Check if we are already initialized */
+
+ if (!initialized)
+ {
+ /* Initialize a quadrature encoder interface. */
+
+ qevdbg("Initializing the quadrature encoder using TIM%d\n", TIMID);
+ ret = stm32_qeinitialize("/dev/qe0", TIMID);
+ if (ret < 0)
+ {
+ qedbg("stm32_qeinitialize failed: %d\n", ret);
+ return ret;
+ }
+
+ initialized = true;
+ }
+
+ return OK;
+}
+
+#endif /* HAVE_QENCODER */
diff --git a/nuttx/configs/stm32ldiscovery/src/stm32_spi.c b/nuttx/configs/stm32ldiscovery/src/stm32_spi.c
new file mode 100644
index 000000000..a419d804d
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/src/stm32_spi.c
@@ -0,0 +1,214 @@
+/************************************************************************************
+ * configs/stm32ldiscovery/src/up_spi.c
+ * arch/arm/src/board/up_spi.c
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/spi.h>
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "chip.h"
+#include "stm32.h"
+#include "stm32ldiscovery.h"
+
+#if defined(CONFIG_STM32_SPI1) || defined(CONFIG_STM32_SPI2) || defined(CONFIG_STM32_SPI3)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/* Enables debug output from this file (needs CONFIG_DEBUG too) */
+
+#undef SPI_DEBUG /* Define to enable debug */
+#undef SPI_VERBOSE /* Define to enable verbose debug */
+
+#ifdef SPI_DEBUG
+# define spidbg lldbg
+# ifdef SPI_VERBOSE
+# define spivdbg lldbg
+# else
+# define spivdbg(x...)
+# endif
+#else
+# undef SPI_VERBOSE
+# define spidbg(x...)
+# define spivdbg(x...)
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: stm32_spiinitialize
+ *
+ * Description:
+ * Called to configure SPI chip select GPIO pins for the stm32ldiscovery board.
+ *
+ ************************************************************************************/
+
+void weak_function stm32_spiinitialize(void)
+{
+#ifdef CONFIG_STM32_SPI1
+ (void)stm32_configgpio(GPIO_MEMS_CS); /* MEMS chip select */
+ (void)stm32_configgpio(GPIO_MEMS_INT1); /* MEMS interrupts */
+ (void)stm32_configgpio(GPIO_MEMS_INT2);
+#endif
+}
+
+/****************************************************************************
+ * Name: stm32_spi1/2/3select and stm32_spi1/2/3status
+ *
+ * Description:
+ * The external functions, stm32_spi1/2/3select and stm32_spi1/2/3status must be
+ * provided by board-specific logic. They are implementations of the select
+ * and status methods of the SPI interface defined by struct spi_ops_s (see
+ * include/nuttx/spi.h). All other methods (including up_spiinitialize())
+ * are provided by common STM32 logic. To use this common SPI logic on your
+ * board:
+ *
+ * 1. Provide logic in stm32_boardinitialize() to configure SPI chip select
+ * pins.
+ * 2. Provide stm32_spi1/2/3select() and stm32_spi1/2/3status() functions in your
+ * board-specific logic. These functions will perform chip selection and
+ * status operations using GPIOs in the way your board is configured.
+ * 3. Add a calls to up_spiinitialize() in your low level application
+ * initialization logic
+ * 4. The handle returned by up_spiinitialize() may then be used to bind the
+ * SPI driver to higher level logic (e.g., calling
+ * mmcsd_spislotinitialize(), for example, will bind the SPI driver to
+ * the SPI MMC/SD driver).
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_STM32_SPI1
+void stm32_spi1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+ spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+
+ stm32_gpiowrite(GPIO_MEMS_CS, !selected);
+}
+
+uint8_t stm32_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_STM32_SPI2
+void stm32_spi2select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+ spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+}
+
+uint8_t stm32_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_STM32_SPI3
+void stm32_spi3select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
+{
+ spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+}
+
+uint8_t stm32_spi3status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
+{
+ return 0;
+}
+#endif
+
+/****************************************************************************
+ * Name: stm32_spi1cmddata
+ *
+ * Description:
+ * Set or clear the SH1101A A0 or SD1306 D/C n bit to select data (true)
+ * or command (false). This function must be provided by platform-specific
+ * logic. This is an implementation of the cmddata method of the SPI
+ * interface defined by struct spi_ops_s (see include/nuttx/spi.h).
+ *
+ * Input Parameters:
+ *
+ * spi - SPI device that controls the bus the device that requires the CMD/
+ * DATA selection.
+ * devid - If there are multiple devices on the bus, this selects which one
+ * to select cmd or data. NOTE: This design restricts, for example,
+ * one one SPI display per SPI bus.
+ * cmd - true: select command; false: select data
+ *
+ * Returned Value:
+ * None
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_SPI_CMDDATA
+#ifdef CONFIG_STM32_SPI1
+int stm32_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
+{
+ return -ENODEV;
+}
+#endif
+
+#ifdef CONFIG_STM32_SPI2
+int stm32_spi2cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
+{
+ return -ENODEV;
+}
+#endif
+
+#ifdef CONFIG_STM32_SPI3
+int stm32_spi3cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
+{
+ return -ENODEV;
+}
+#endif
+#endif /* CONFIG_SPI_CMDDATA */
+
+#endif /* CONFIG_STM32_SPI1 || CONFIG_STM32_SPI2 */
diff --git a/nuttx/configs/stm32ldiscovery/src/stm32_usb.c b/nuttx/configs/stm32ldiscovery/src/stm32_usb.c
new file mode 100644
index 000000000..28ce91ad2
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/src/stm32_usb.c
@@ -0,0 +1,131 @@
+/************************************************************************************
+ * configs/stm32ldiscovery/src/up_usbdev.c
+ * arch/arm/src/board/up_boot.c
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <sched.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/usb/usbdev.h>
+#include <nuttx/usb/usbdev_trace.h>
+
+#include "up_arch.h"
+#include "stm32.h"
+#include "stm32ldiscovery.h"
+
+#ifdef CONFIG_STM32_USB
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+#ifdef CONFIG_USBDEV
+# define HAVE_USB 1
+#else
+# warning "CONFIG_STM32_USB is enabled but CONFIG_USBDEV is not"
+# undef HAVE_USB
+#endif
+
+/************************************************************************************
+ * Private Data
+ ************************************************************************************/
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: stm32_usbinitialize
+ *
+ * Description:
+ * Called from stm32_usbinitialize very early in inialization to setup USB-related
+ * GPIO pins for the STM32F3Discovery board.
+ *
+ ************************************************************************************/
+
+void stm32_usbinitialize(void)
+{
+ /* Does the STM32 F3 hava an external soft pull-up? */
+}
+
+/************************************************************************************
+ * Name: stm32_usbpullup
+ *
+ * Description:
+ * If USB is supported and the board supports a pullup via GPIO (for USB software
+ * connect and disconnect), then the board software must provide stm32_pullup.
+ * See include/nuttx/usb/usbdev.h for additional description of this method.
+ *
+ ************************************************************************************/
+
+int stm32_usbpullup(FAR struct usbdev_s *dev, bool enable)
+{
+ usbtrace(TRACE_DEVPULLUP, (uint16_t)enable);
+ return OK;
+}
+
+/************************************************************************************
+ * Name: stm32_usbsuspend
+ *
+ * Description:
+ * Board logic must provide the stm32_usbsuspend logic if the USBDEV driver is
+ * used. This function is called whenever the USB enters or leaves suspend mode.
+ * This is an opportunity for the board logic to shutdown clocks, power, etc.
+ * while the USB is suspended.
+ *
+ ************************************************************************************/
+
+void stm32_usbsuspend(FAR struct usbdev_s *dev, bool resume)
+{
+ ulldbg("resume: %d\n", resume);
+}
+
+#endif /* CONFIG_STM32_USB */
+
+
+
diff --git a/nuttx/configs/stm32ldiscovery/src/stm32_userleds.c b/nuttx/configs/stm32ldiscovery/src/stm32_userleds.c
new file mode 100644
index 000000000..57f2af60f
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/src/stm32_userleds.c
@@ -0,0 +1,142 @@
+/****************************************************************************
+ * configs/stm32ldiscovery/src/up_leds.c
+ * arch/arm/src/board/up_leds.c
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <arch/board/board.h>
+
+#include "chip.h"
+#include "stm32.h"
+#include "stm32ldiscovery.h"
+
+#ifndef CONFIG_ARCH_LEDS
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* CONFIG_DEBUG_LEDS enables debug output from this file (needs CONFIG_DEBUG
+ * with CONFIG_DEBUG_VERBOSE too)
+ */
+
+#ifdef CONFIG_DEBUG_LEDS
+# define leddbg lldbg
+# define ledvdbg llvdbg
+#else
+# define leddbg(x...)
+# define ledvdbg(x...)
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Protototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: stm32_ledinit
+ ****************************************************************************/
+
+void stm32_ledinit(void)
+{
+ /* Configure LED1-2 GPIOs for output */
+
+ stm32_configgpio(GPIO_LED1);
+ stm32_configgpio(GPIO_LED2);
+}
+
+/****************************************************************************
+ * Name: stm32_setled
+ ****************************************************************************/
+
+void stm32_setled(int led, bool ledon)
+{
+ uint16_t ledcfg;
+
+ if (led == BOARD_LED1)
+ {
+ ledcfg = GPIO_LED1;
+ }
+ else if (led == BOARD_LED1)
+ {
+ ledcfg = GPIO_LED2;
+ }
+ else
+ {
+ return;
+ }
+
+ stm32_gpiowrite(ledcfg, ledon);
+}
+
+/****************************************************************************
+ * Name: stm32_setleds
+ ****************************************************************************/
+
+void stm32_setleds(uint8_t ledset)
+{
+ bool ledon;
+
+ ledon = ((ledset & BOARD_LED1_BIT) != 0);
+ stm32_gpiowrite(GPIO_LED1, ledon);
+
+ ledon = ((ledset & BOARD_LED2_BIT) != 0);
+ stm32_gpiowrite(GPIO_LED2, ledon);
+}
+
+#endif /* !CONFIG_ARCH_LEDS */
diff --git a/nuttx/configs/stm32ldiscovery/src/stm32_watchdog.c b/nuttx/configs/stm32ldiscovery/src/stm32_watchdog.c
new file mode 100644
index 000000000..ec6a569ee
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/src/stm32_watchdog.c
@@ -0,0 +1,136 @@
+/************************************************************************************
+ * configs/stm32ldiscovery/src/up_watchdog.c
+ * arch/arm/src/board/up_watchdog.c
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/watchdog.h>
+#include <arch/board/board.h>
+
+#include "stm32_wdg.h"
+
+#ifdef CONFIG_WATCHDOG
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+/* Configuration *******************************************************************/
+/* Wathdog hardware should be enabled */
+
+#if !defined(CONFIG_STM32_WWDG) && !defined(CONFIG_STM32_IWDG)
+# warning "One of CONFIG_STM32_WWDG or CONFIG_STM32_IWDG must be defined"
+#endif
+
+/* Select the path to the registered watchdog timer device */
+
+#ifndef CONFIG_STM32_WDG_DEVPATH
+# ifdef CONFIG_EXAMPLES_WATCHDOG_DEVPATH
+# define CONFIG_STM32_WDG_DEVPATH CONFIG_EXAMPLES_WATCHDOG_DEVPATH
+# else
+# define CONFIG_STM32_WDG_DEVPATH "/dev/watchdog0"
+# endif
+#endif
+
+/* Use the un-calibrated LSI frequency if we have nothing better */
+
+#if defined(CONFIG_STM32_IWDG) && !defined(CONFIG_STM32_LSIFREQ)
+# define CONFIG_STM32_LSIFREQ STM32_LSI_FREQUENCY
+#endif
+
+/* Debug ***************************************************************************/
+/* Non-standard debug that may be enabled just for testing the watchdog timer */
+
+#ifndef CONFIG_DEBUG
+# undef CONFIG_DEBUG_WATCHDOG
+#endif
+
+#ifdef CONFIG_DEBUG_WATCHDOG
+# define wdgdbg dbg
+# define wdglldbg lldbg
+# ifdef CONFIG_DEBUG_VERBOSE
+# define wdgvdbg vdbg
+# define wdgllvdbg llvdbg
+# else
+# define wdgvdbg(x...)
+# define wdgllvdbg(x...)
+# endif
+#else
+# define wdgdbg(x...)
+# define wdglldbg(x...)
+# define wdgvdbg(x...)
+# define wdgllvdbg(x...)
+#endif
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/****************************************************************************
+ * Name: up_wdginitialize()
+ *
+ * Description:
+ * Perform architecuture-specific initialization of the Watchdog hardware.
+ * This interface must be provided by all configurations using
+ * apps/examples/watchdog
+ *
+ ****************************************************************************/
+
+int up_wdginitialize(void)
+{
+ /* Initialize tha register the watchdog timer device */
+
+#if defined(CONFIG_STM32_WWDG)
+ stm32_wwdginitialize(CONFIG_STM32_WDG_DEVPATH);
+ return OK;
+#elif defined(CONFIG_STM32_IWDG)
+ stm32_iwdginitialize(CONFIG_STM32_WDG_DEVPATH, CONFIG_STM32_LSIFREQ);
+ return OK;
+#else
+ return -ENODEV;
+#endif
+}
+
+#endif /* CONFIG_WATCHDOG */
diff --git a/nuttx/configs/stm32ldiscovery/src/stm32ldiscovery.h b/nuttx/configs/stm32ldiscovery/src/stm32ldiscovery.h
new file mode 100644
index 000000000..174d2a34d
--- /dev/null
+++ b/nuttx/configs/stm32ldiscovery/src/stm32ldiscovery.h
@@ -0,0 +1,149 @@
+/****************************************************************************************************
+ * configs/stm32ldiscovery/src/stm32ldiscover.h
+ * arch/arm/src/board/stm32ldiscover.n
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************************************/
+
+#ifndef __CONFIGS_STM32F3DISCOVERY_SRC_STM32F3DISCOVERY_INTERNAL_H
+#define __CONFIGS_STM32F3DISCOVERY_SRC_STM32F3DISCOVERY_INTERNAL_H
+
+/****************************************************************************************************
+ * Included Files
+ ****************************************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+#include <stdint.h>
+
+/****************************************************************************************************
+ * Definitions
+ ****************************************************************************************************/
+/* Configuration ************************************************************************************/
+/* How many SPI modules does this chip support? */
+
+#if STM32_NSPI < 1
+# undef CONFIG_STM32_SPI1
+# undef CONFIG_STM32_SPI2
+# undef CONFIG_STM32_SPI3
+#elif STM32_NSPI < 2
+# undef CONFIG_STM32_SPI2
+# undef CONFIG_STM32_SPI3
+#elif STM32_NSPI < 3
+# undef CONFIG_STM32_SPI3
+#endif
+
+/* STM32L-Discovery GPIOs ***************************************************************************/
+/* The STM32L-Discovery board has four LEDs. Two of these are controlled by
+ * logic on the board and are not available for software control:
+ *
+ * LD1 COM: LD2 default status is red. LD2 turns to green to indicate that
+ * communications are in progress between the PC and the ST-LINK/V2.
+ * LD2 PWR: Red LED indicates that the board is powered.
+ *
+ * And two LEDs can be controlled by software:
+ *
+ * User LD3: Green LED is a user LED connected to the I/O PB7 of the STM32L152
+ * MCU.
+ * User LD4: Blue LED is a user LED connected to the I/O PB6 of the STM32L152
+ * MCU.
+ *
+ */
+
+#define GPIO_LED1 (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_50MHz|\
+ GPIO_OUTPUT_CLEAR|GPIO_PORTB|GPIO_PIN7)
+#define GPIO_LED2 (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_50MHz|\
+ GPIO_OUTPUT_CLEAR|GPIO_PORTB|GPIO_PIN6)
+
+/* Button definitions *******************************************************************************/
+/* The STM32L-Discovery supports two buttons; only one button is controllable by
+ * software:
+ *
+ * B1 USER: user and wake-up button connected to the I/O PA0 of the STM32F303VCT6.
+ * B2 RESET: pushbutton connected to NRST is used to RESET the STM32F303VCT6.
+ *
+ * NOTE that EXTI interrupts are configured
+ */
+
+#define MIN_IRQBUTTON BUTTON_USER
+#define MAX_IRQBUTTON BUTTON_USER
+#define NUM_IRQBUTTONS 1
+
+#define GPIO_BTN_USER (GPIO_INPUT|GPIO_FLOAT|GPIO_EXTI|GPIO_PORTA|GPIO_PIN0)
+
+/* SPI - There is a ST MEMS L3GD20 device on SPI1 using these pins: */
+
+#define GPIO_MEMS_CS (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_50MHz|\
+ GPIO_OUTPUT_SET|GPIO_PORTE|GPIO_PIN3)
+#define GPIO_MEMS_INT1 (GPIO_INPUT|GPIO_FLOAT|GPIO_EXTI|GPIO_PORTE|GPIO_PIN0)
+#define GPIO_MEMS_INT2 (GPIO_INPUT|GPIO_FLOAT|GPIO_EXTI|GPIO_PORTE|GPIO_PIN1)
+
+/****************************************************************************************************
+ * Public Types
+ ****************************************************************************************************/
+
+/****************************************************************************************************
+ * Public data
+ ****************************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************************************
+ * Public Functions
+ ****************************************************************************************************/
+
+/****************************************************************************************************
+ * Name: stm32_spiinitialize
+ *
+ * Description:
+ * Called to configure SPI chip select GPIO pins for the stm32ldiscovery board.
+ *
+ ****************************************************************************************************/
+
+void weak_function stm32_spiinitialize(void);
+
+/****************************************************************************************************
+ * Name: stm32_usbinitialize
+ *
+ * Description:
+ * Called from stm32_usbinitialize very early in inialization to setup USB-related
+ * GPIO pins for the STM32L-Discovery board.
+ *
+ ****************************************************************************************************/
+
+#ifdef CONFIG_STM32_USB
+void weak_function stm32_usbinitialize(void);
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __CONFIGS_STM32F3DISCOVERY_SRC_STM32F3DISCOVERY_INTERNAL_H */
+