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Diffstat (limited to 'nuttx/configs/sam4s-xplained/include/board.h')
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1 files changed, 281 insertions, 0 deletions
diff --git a/nuttx/configs/sam4s-xplained/include/board.h b/nuttx/configs/sam4s-xplained/include/board.h new file mode 100644 index 000000000..7f60109c9 --- /dev/null +++ b/nuttx/configs/sam4s-xplained/include/board.h @@ -0,0 +1,281 @@ +/************************************************************************************ + * configs/sam4s-xplained/include/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 __CONFIGS_SAM4L_XPLAINED_INCLUDE_BOARD_H +#define __CONFIGS_SAM4L_XPLAINED_INCLUDE_BOARD_H + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include <nuttx/config.h> + +#ifndef __ASSEMBLY__ +# include <stdint.h> +# ifdef CONFIG_GPIO_IRQ +# include <arch/irq.h> +# endif +#endif + +/************************************************************************************ + * Definitions + ************************************************************************************/ + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include <nuttx/config.h> + +#ifndef __ASSEMBLY__ +# include <stdint.h> +# ifdef CONFIG_GPIO_IRQ +# include <arch/irq.h> +# endif +#endif + +/************************************************************************************ + * Definitions + ************************************************************************************/ + +/* Clocking *************************************************************************/ +/* After power-on reset, the sam3u device is running on a 4MHz internal RC. These + * definitions will configure clocking with MCK = 48MHz, PLLA = 96, and CPU=48MHz. + */ + +/* Main oscillator register settings */ + +#define BOARD_CKGR_MOR_MOSCXTST (63 << PMC_CKGR_MOR_MOSCXTST_SHIFT) /* Start-up Time */ + +/* PLLA configuration */ + +#define BOARD_CKGR_PLLAR_MUL (7 << PMC_CKGR_PLLAR_MUL_SHIFT) +#define BOARD_CKGR_PLLAR_STMODE PMC_CKGR_PLLAR_STMODE_FAST +#define BOARD_CKGR_PLLAR_COUNT (63 << PMC_CKGR_PLLAR_COUNT_SHIFT) +#define BOARD_CKGR_PLLAR_DIV PMC_CKGR_PLLAR_DIV_BYPASS + +/* PMC master clock register settings */ + +#define BOARD_PMC_MCKR_CSS PMC_MCKR_CSS_PLLA +#define BOARD_PMC_MCKR_PRES PMC_MCKR_PRES_DIV2 + +/* USB UTMI PLL start-up time */ + +#define BOARD_CKGR_UCKR_UPLLCOUNT (3 << PMC_CKGR_UCKR_UPLLCOUNT_SHIFT) + +/* Resulting frequencies */ + +#define SAM_MAINOSC_FREQUENCY (12000000) +#define SAM_MCK_FREQUENCY (48000000) +#define SAM_PLLA_FREQUENCY (96000000) +#define SAM_CPU_FREQUENCY (48000000) + +/* HSMCI clocking + * + * Multimedia Card Interface clock (MCCK or MCI_CK) is Master Clock (MCK) + * divided by (2*(CLKDIV+1)). + * + * MCI_SPEED = MCK / (2*(CLKDIV+1)) + * CLKDIV = MCI / MCI_SPEED / 2 - 1 + */ + +/* MCK = 48MHz, CLKDIV = 59, MCI_SPEED = 48MHz / 2 * (59+1) = 400 KHz */ + +#define HSMCI_INIT_CLKDIV (59 << HSMCI_MR_CLKDIV_SHIFT) + +/* MCK = 48MHz, CLKDIV = 1, MCI_SPEED = 48MHz / 2 * (1+1) = 12 MHz */ + +#define HSMCI_MMCXFR_CLKDIV (3 << HSMCI_MR_CLKDIV_SHIFT) + +/* MCK = 48MHz, CLKDIV = 0, MCI_SPEED = 48MHz / 2 * (0+1) = 24 MHz */ + +#define HSMCI_SDXFR_CLKDIV (0 << HSMCI_MR_CLKDIV_SHIFT) +#define HSMCI_SDWIDEXFR_CLKDIV HSMCI_SDXFR_CLKDIV + +/* LED definitions ******************************************************************/ +/* There are four LEDs on board the SAM4S Xplained board, two of these can be + * controlled by software in the SAM4S: + * + * LED GPIO + * ---------------- ----- + * D9 Yellow LED PC10 + * D10 Yellow LED PC17 + * + * Both can be illuminated by driving the GPIO output to ground (low). + */ + +/* LED index values for use with sam_setled() */ + +#define BOARD_D9 0 +#define BOARD_D10 1 +#define BOARD_NLEDS 2 + +/* LED bits for use with sam_setleds() */ + +#define BOARD_D9_BIT (1 << BOARD_D9) +#define BOARD_D10_BIT (1 << BOARD_D10) + +/* 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 Val Meaning LED state + * D9 D10 + * ----------------------- --- ----------------------- -------- -------- */ +#define LED_STARTED 0 /* NuttX has been started OFF OFF */ +#define LED_HEAPALLOCATE 0 /* Heap has been allocated OFF OFF */ +#define LED_IRQSENABLED 0 /* Interrupts enabled OFF OFF */ +#define LED_STACKCREATED 0 /* Idle stack created ON OFF */ +#define LED_INIRQ 0 /* In an interrupt No change */ +#define LED_SIGNAL 0 /* In a signal handler No change */ +#define LED_ASSERTION 0 /* An assertion failed No change */ +#define LED_PANIC 0 /* The system has crashed OFF Blinking */ +#define LED_IDLE 0 /* MCU is is sleep mode Not used */ + +/* Thus if D9 is statically on, NuttX has successfully booted and is, + * apparently, running normmally. If D10 is flashing at approximately + * 2Hz, then a fatal error has been detected and the system has halted. + */ + +/* Button definitions ***************************************************************/ +/* Mechanical buttons: + * + * The SAM4S Xplained has two mechanical buttons. One button is the RESET button + * connected to the SAM4S reset line and the other is a generic user configurable + * button labeled BP2. When a button is pressed it will drive the I/O line to GND. + * + * PA5 BP2 + */ + +#define BUTTON_BP2 0 +#define NUM_BUTTONS 1 + +#define BUTTON_BP2_BIT (1 << BUTTON_BP2) + +/************************************************************************************ + * Public Data + ************************************************************************************/ + +#ifndef __ASSEMBLY__ + +#undef EXTERN +#if defined(__cplusplus) +#define EXTERN extern "C" +extern "C" { +#else +#define EXTERN extern +#endif + +/************************************************************************************ + * Public Function Prototypes + ************************************************************************************/ +/************************************************************************************ + * Name: sam_boardinitialize + * + * Description: + * All SAM3U 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 sam_boardinitialize(void); + +/************************************************************************************ + * Name: sam_ledinit, sam_setled, and sam_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 interfaces are available to + * control the LEDs from user applications. + * + ************************************************************************************/ + +#ifndef CONFIG_ARCH_LEDS +void sam_ledinit(void); +void sam_setled(int led, bool ledon); +void sam_setleds(uint8_t ledset); +#endif + +/************************************************************************************ + * 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. + * + ************************************************************************************/ + +#ifdef CONFIG_ARCH_BUTTONS +void up_buttoninit(void); + +/************************************************************************************ + * Name: up_buttons + * + * Description: + * 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* definitions above for the meaning of + * each bit in the returned value. + * + ************************************************************************************/ + +uint8_t up_buttons(void); + +/************************************************************************************ + * Name: up_irqbutton + * + * Description: + * This function may be called to register an interrupt handler that will be + * called when a button is depressed or released. The ID value is one of the + * BUTTON* definitions provided above. The previous interrupt handler address is + * returned (so that it may restored, if so desired). + * + ************************************************************************************/ + +#ifdef CONFIG_GPIOA_IRQ +xcpt_t up_irqbutton(int id, xcpt_t irqhandler); +#endif +#endif /* CONFIG_ARCH_BUTTONS */ + +#undef EXTERN +#if defined(__cplusplus) +} +#endif + +#endif /* __ASSEMBLY__ */ +#endif /* __CONFIGS_SAM4L_XPLAINED_INCLUDE_BOARD_H */ |