aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorpatacongo <patacongo@7fd9a85b-ad96-42d3-883c-3090e2eb8679>2012-07-25 13:35:36 +0000
committerpatacongo <patacongo@7fd9a85b-ad96-42d3-883c-3090e2eb8679>2012-07-25 13:35:36 +0000
commitca8620083e4f2c28d7b65d97880a42d1d68d1700 (patch)
tree4db514dfbab62d4ddf161d71cf1c409646cdedb7
parentd7280d43821c750e6d8aa35ac6f26f811cc6890b (diff)
downloadpx4-firmware-ca8620083e4f2c28d7b65d97880a42d1d68d1700.tar.gz
px4-firmware-ca8620083e4f2c28d7b65d97880a42d1d68d1700.tar.bz2
px4-firmware-ca8620083e4f2c28d7b65d97880a42d1d68d1700.zip
Add PM support for the STM32F4Discovery -- still a work in progress
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4976 7fd9a85b-ad96-42d3-883c-3090e2eb8679
-rw-r--r--nuttx/ChangeLog3
-rw-r--r--nuttx/arch/arm/src/stm32/stm32f40xxx_rtc.c6
-rwxr-xr-xnuttx/configs/stm32f4discovery/README.txt47
-rw-r--r--nuttx/configs/stm32f4discovery/nsh/Make.defs4
-rw-r--r--nuttx/configs/stm32f4discovery/nxlines/Make.defs4
-rw-r--r--nuttx/configs/stm32f4discovery/nxlines/ld.script122
-rw-r--r--nuttx/configs/stm32f4discovery/ostest/Make.defs4
-rw-r--r--nuttx/configs/stm32f4discovery/ostest/ld.script122
-rw-r--r--nuttx/configs/stm32f4discovery/pm/Make.defs197
-rw-r--r--nuttx/configs/stm32f4discovery/pm/appconfig67
-rw-r--r--nuttx/configs/stm32f4discovery/pm/defconfig1531
-rw-r--r--nuttx/configs/stm32f4discovery/pm/setenv.sh75
-rw-r--r--nuttx/configs/stm32f4discovery/scripts/ld.script (renamed from nuttx/configs/stm32f4discovery/nsh/ld.script)4
-rw-r--r--nuttx/configs/stm32f4discovery/src/Makefile12
-rw-r--r--nuttx/configs/stm32f4discovery/src/stm32f4discovery-internal.h8
-rwxr-xr-xnuttx/configs/stm32f4discovery/src/up_idle.c277
-rwxr-xr-xnuttx/configs/stm32f4discovery/src/up_pm.c107
-rwxr-xr-xnuttx/configs/stm32f4discovery/src/up_pmbuttons.c202
-rw-r--r--nuttx/configs/stm32f4discovery/src/up_userleds.c117
-rw-r--r--nuttx/include/termios.h4
-rw-r--r--nuttx/lib/termios/lib_cfsetspeed.c11
21 files changed, 2666 insertions, 258 deletions
diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog
index 0ec8ffb8f..44ffa57bf 100644
--- a/nuttx/ChangeLog
+++ b/nuttx/ChangeLog
@@ -3065,4 +3065,7 @@
* include/termios.h and lib/termios/*: Replace cfsetispeed and cfsetospeed with
cfsetspeed (with definitions for the input/outputs in termios.h). Same for
cfgetispeed and cfgetospeed.
+ * configs/stm32f4discovery/src and configs/stm32f4discovery/pm: Add a power
+ management configuration for the STM32F4Discovery and supporting logic. This
+ check-in also includes some fixes for the F4 RTC alarm logic.
diff --git a/nuttx/arch/arm/src/stm32/stm32f40xxx_rtc.c b/nuttx/arch/arm/src/stm32/stm32f40xxx_rtc.c
index f92d46b16..c11748ae5 100644
--- a/nuttx/arch/arm/src/stm32/stm32f40xxx_rtc.c
+++ b/nuttx/arch/arm/src/stm32/stm32f40xxx_rtc.c
@@ -626,8 +626,8 @@ int up_rtcinitialize(void)
/* Then attach the ALARM interrupt handler */
- irq_attach(STM32_IRQ_RTC, rtc_interrupt);
- up_enable_irq(STM32_IRQ_RTC);
+ irq_attach(STM32_IRQ_RTC_WKUP, rtc_interrupt);
+ up_enable_irq(STM32_IRQ_RTC_WKUP);
#endif
g_rtc_enabled = true;
@@ -813,7 +813,7 @@ int up_rtc_settime(FAR const struct timespec *tp)
************************************************************************************/
#ifdef CONFIG_RTC_ALARM
-int up_rtc_setalarm(FAR const struct timespec *tp, alarmcb_t callback);
+int up_rtc_setalarm(FAR const struct timespec *tp, alarmcb_t callback)
{
irqstate_t flags;
int ret = -EBUSY;
diff --git a/nuttx/configs/stm32f4discovery/README.txt b/nuttx/configs/stm32f4discovery/README.txt
index 795dfb23f..adc10b7a0 100755
--- a/nuttx/configs/stm32f4discovery/README.txt
+++ b/nuttx/configs/stm32f4discovery/README.txt
@@ -1070,3 +1070,50 @@ Where <subdir> is one of the following:
CONFIG_STM32_CODESOURCERYW=y : CodeSourcery under Windows
NOTE: As of this writing, I have not seen the LCD work!
+
+ pm:
+ --
+ This is a configuration that is used to test STM32 power management, i.e.,
+ to test that the board can go into lower and lower states of power usage
+ as a result of inactivity. This configuration is based on the nsh2
+ configuration with modifications for testing power management. This
+ configuration should provide some guideline for power management in your
+ STM32 application.
+
+ CONFIG_STM32_CODESOURCERYW=y : CodeSourcery under Windows
+
+ CONFIG_PM_CUSTOMINIT and CONFIG_IDLE_CUSTOM are necessary parts of the
+ PM configuration:
+
+ CONFIG_PM_CUSTOMINIT=y
+
+ CONFIG_PM_CUSTOMINIT moves the PM initialization from arch/arm/src/stm32/stm32_pminitialiaze.c
+ to configs/stm3210-eval/src/up_pm.c. This allows us to support board-
+ specific PM initialization.
+
+ CONFIG_IDLE_CUSTOM=y
+
+ The bulk of the PM activities occur in the IDLE loop. The IDLE loop is
+ special because it is what runs when there is no other task running. Therefore
+ when the IDLE executes, we can be assure that nothing else is going on; this
+ is the ideal condition for doing reduced power management.
+
+ The configuration CONFIG_IDLE_CUSTOM allows us to "steal" the normal STM32
+ IDLE loop (of arch/arm/src/stm32/stm32_idle.c) and replace this with our own
+ custom IDLE loop (at configs/stm3210-eval/src/up_idle.c).
+
+ Here are some additional things to note in the configuration:
+
+ CONFIG_PM_BUTTONS=y
+
+ CONFIG_PM_BUTTONS enables button support for PM testing. Buttons can drive
+ EXTI interrupts and EXTI interrrupts can be used to wakeup for certain reduced
+ power modes (STOP mode). The use of the buttons here is for PM testing purposes
+ only; buttons would normally be part the application code and CONFIG_PM_BUTTONS
+ would not be defined.
+
+ CONFIG_RTC_ALARM=y
+
+ The RTC alarm is used to wake up from STOP mode and to transition to
+ STANDBY mode. This used of the RTC alarm could conflict with other uses of
+ the RTC alarm in your application.
diff --git a/nuttx/configs/stm32f4discovery/nsh/Make.defs b/nuttx/configs/stm32f4discovery/nsh/Make.defs
index e1e285019..80c1a8d8f 100644
--- a/nuttx/configs/stm32f4discovery/nsh/Make.defs
+++ b/nuttx/configs/stm32f4discovery/nsh/Make.defs
@@ -104,14 +104,14 @@ ifeq ($(WINTOOL),y)
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)/nsh/$(LDSCRIPT)}"
+ ARCHSCRIPT = -T "${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/$(CONFIG_ARCH_BOARD)/nsh/$(LDSCRIPT)
+ ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
endif
CC = $(CROSSDEV)gcc
diff --git a/nuttx/configs/stm32f4discovery/nxlines/Make.defs b/nuttx/configs/stm32f4discovery/nxlines/Make.defs
index 19b1aba9c..3a252c544 100644
--- a/nuttx/configs/stm32f4discovery/nxlines/Make.defs
+++ b/nuttx/configs/stm32f4discovery/nxlines/Make.defs
@@ -104,14 +104,14 @@ ifeq ($(WINTOOL),y)
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)/nxlines/$(LDSCRIPT)}"
+ ARCHSCRIPT = -T "${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/$(CONFIG_ARCH_BOARD)/nxlines/$(LDSCRIPT)
+ ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
endif
CC = $(CROSSDEV)gcc
diff --git a/nuttx/configs/stm32f4discovery/nxlines/ld.script b/nuttx/configs/stm32f4discovery/nxlines/ld.script
deleted file mode 100644
index 31a40de2f..000000000
--- a/nuttx/configs/stm32f4discovery/nxlines/ld.script
+++ /dev/null
@@ -1,122 +0,0 @@
-/****************************************************************************
- * configs/stm32f4discovery/nxlines/ld.script
- *
- * Copyright (C) 2012 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 STM32F407VG has 1024Kb of FLASH beginning at address 0x0800:0000 and
- * 192Kb of SRAM. SRAM is split up into three blocks:
- *
- * 1) 112Kb of SRAM beginning at address 0x2000:0000
- * 2) 16Kb of SRAM beginning at address 0x2001:c000
- * 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
- *
- * 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 = 1024K
- sram (rwx) : ORIGIN = 0x20000000, LENGTH = 112K
-}
-
-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
-
- __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
-
- .ARM.extab : {
- *(.ARM.extab*)
- } >sram
-
- .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/stm32f4discovery/ostest/Make.defs b/nuttx/configs/stm32f4discovery/ostest/Make.defs
index 6337940d8..b4d79bd49 100644
--- a/nuttx/configs/stm32f4discovery/ostest/Make.defs
+++ b/nuttx/configs/stm32f4discovery/ostest/Make.defs
@@ -104,14 +104,14 @@ ifeq ($(WINTOOL),y)
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)/ostest/$(LDSCRIPT)}"
+ ARCHSCRIPT = -T "${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/$(CONFIG_ARCH_BOARD)/ostest/$(LDSCRIPT)
+ ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
endif
CC = $(CROSSDEV)gcc
diff --git a/nuttx/configs/stm32f4discovery/ostest/ld.script b/nuttx/configs/stm32f4discovery/ostest/ld.script
deleted file mode 100644
index c3a5ed818..000000000
--- a/nuttx/configs/stm32f4discovery/ostest/ld.script
+++ /dev/null
@@ -1,122 +0,0 @@
-/****************************************************************************
- * configs/stm32f4discovery/ostest/ld.script
- *
- * Copyright (C) 2011 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 STM32F407VG has 1024Kb of FLASH beginning at address 0x0800:0000 and
- * 192Kb of SRAM. SRAM is split up into three blocks:
- *
- * 1) 112Kb of SRAM beginning at address 0x2000:0000
- * 2) 16Kb of SRAM beginning at address 0x2001:c000
- * 3) 64Kb of CCM SRAM beginning at address 0x1000:0000
- *
- * 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 = 1024K
- sram (rwx) : ORIGIN = 0x20000000, LENGTH = 112K
-}
-
-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
-
- __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
-
- .ARM.extab : {
- *(.ARM.extab*)
- } >sram
-
- .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/stm32f4discovery/pm/Make.defs b/nuttx/configs/stm32f4discovery/pm/Make.defs
new file mode 100644
index 000000000..9c94797a7
--- /dev/null
+++ b/nuttx/configs/stm32f4discovery/pm/Make.defs
@@ -0,0 +1,197 @@
+############################################################################
+# configs/stm32f4discovery/pm/Make.defs
+#
+# Copyright (C) 2012 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 ${TOPDIR}/.config
+
+# Setup for the selected toolchain
+
+ifeq ($(CONFIG_STM32_CODESOURCERYW),y)
+ # CodeSourcery under Windows
+ CROSSDEV = arm-none-eabi-
+ ARCROSSDEV = arm-none-eabi-
+ WINTOOL = y
+ ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_STM32_CODESOURCERYL),y)
+ # CodeSourcery under Linux
+ CROSSDEV = arm-none-eabi-
+ ARCROSSDEV = arm-none-eabi-
+ ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+ MAXOPTIMIZATION = -O2
+endif
+ifeq ($(CONFIG_STM32_ATOLLIC_LITE),y)
+ # Atollic toolchain under Windows
+ CROSSDEV = arm-atollic-eabi-
+ ARCROSSDEV =
+ WINTOOL = y
+ifeq ($(CONFIG_ARCH_FPU),y)
+ ARCHCPUFLAGS = -mcpu=cortex-m4 -mthumb -march=armv7e-m -mfpu=fpv4-sp-d16 -mfloat-abi=hard
+else
+ ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+endif
+ifeq ($(CONFIG_STM32_ATOLLIC_PRO),y)
+ # Atollic toolchain under Windows
+ CROSSDEV = arm-atollic-eabi-
+ ARCROSSDEV = arm-atollic-eabi-
+ WINTOOL = y
+ifeq ($(CONFIG_ARCH_FPU),y)
+ ARCHCPUFLAGS = -mcpu=cortex-m4 -mthumb -march=armv7e-m -mfpu=fpv4-sp-d16 -mfloat-abi=hard
+else
+ ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+endif
+ifeq ($(CONFIG_STM32_DEVKITARM),y)
+ # devkitARM under Windows
+ CROSSDEV = arm-eabi-
+ ARCROSSDEV = arm-eabi-
+ WINTOOL = y
+ ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_STM32_RAISONANCE),y)
+ # Raisonance RIDE7 under Windows
+ CROSSDEV = arm-none-eabi-
+ ARCROSSDEV = arm-none-eabi-
+ WINTOOL = y
+ ARCHCPUFLAGS = -mcpu=cortex-m3 -mthumb -mfloat-abi=soft
+endif
+ifeq ($(CONFIG_STM32_BUILDROOT),y)
+ # NuttX buildroot under Linux or Cygwin
+ CROSSDEV = arm-elf-
+ ARCROSSDEV = arm-elf-
+ ARCHCPUFLAGS = -mtune=cortex-m3 -march=armv7-m -mfloat-abi=soft
+ MAXOPTIMIZATION = -Os
+endif
+
+LDSCRIPT = ld.script
+
+ifeq ($(WINTOOL),y)
+ # Windows-native toolchains
+ DIRLINK = $(TOPDIR)/tools/winlink.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.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
+
+ifneq ($(CROSSDEV),arm-elf-)
+ LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+ LDFLAGS += -g
+endif
+
+define PREPROCESS
+ @echo "CPP: $1->$2"
+ @$(CPP) $(CPPFLAGS) $1 -o $2
+endef
+
+define COMPILE
+ @echo "CC: $1"
+ @$(CC) -c $(CFLAGS) $1 -o $2
+endef
+
+define COMPILEXX
+ @echo "CXX: $1"
+ @$(CXX) -c $(CXXFLAGS) $1 -o $2
+endef
+
+define ASSEMBLE
+ @echo "AS: $1"
+ @$(CC) -c $(AFLAGS) $1 -o $2
+endef
+
+define ARCHIVE
+ echo "AR: $2"; \
+ $(AR) $1 $2 || { echo "$(AR) $1 $2 FAILED!" ; exit 1 ; }
+endef
+
+define CLEAN
+ @rm -f *.o *.a
+endef
+
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
+HOSTLDFLAGS =
+
diff --git a/nuttx/configs/stm32f4discovery/pm/appconfig b/nuttx/configs/stm32f4discovery/pm/appconfig
new file mode 100644
index 000000000..010f1ef70
--- /dev/null
+++ b/nuttx/configs/stm32f4discovery/pm/appconfig
@@ -0,0 +1,67 @@
+############################################################################
+# configs/stm32f4discovery/pm/appconfig
+#
+# Copyright (C) 2012 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.
+#
+############################################################################
+
+# Path to example in apps/examples containing the user_start entry point
+
+CONFIGURED_APPS += examples/nsh
+
+# The NSH application library
+
+CONFIGURED_APPS += system/readline
+CONFIGURED_APPS += nshlib
+
+# Applications configured as an NX built-in commands
+
+ifeq ($(CONFIG_ADC),y)
+CONFIGURED_APPS += examples/adc
+endif
+
+ifeq ($(CONFIG_PWM),y)
+CONFIGURED_APPS += examples/pwm
+endif
+
+ifeq ($(CONFIG_QENCODER),y)
+CONFIGURED_APPS += examples/qencoder
+endif
+
+ifeq ($(CONFIG_USBDEV),y)
+ifeq ($(CONFIG_CDCACM),y)
+CONFIGURED_APPS += examples/cdcacm
+endif
+endif
+
+ifeq ($(CONFIG_WATCHDOG),y)
+CONFIGURED_APPS += examples/watchdog
+endif
diff --git a/nuttx/configs/stm32f4discovery/pm/defconfig b/nuttx/configs/stm32f4discovery/pm/defconfig
new file mode 100644
index 000000000..32b4ef20e
--- /dev/null
+++ b/nuttx/configs/stm32f4discovery/pm/defconfig
@@ -0,0 +1,1531 @@
+############################################################################
+# configs/stm32f4discovery/pm/defconfig
+#
+# Copyright (C) 2012 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.
+#
+############################################################################
+#
+# architecture selection
+#
+# CONFIG_ARCH - identifies the arch subdirectory and, hence, the
+# processor architecture.
+# CONFIG_ARCH_family - for use in C code. This identifies the
+# particular chip family that the architecture is implemented
+# in.
+# CONFIG_ARCH_architecture - for use in C code. This identifies the
+# specific architecture within the chip familyl.
+# CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory
+# CONFIG_ARCH_CHIP_name - For use in C code
+# CONFIG_ARCH_BOARD - identifies the configs subdirectory and, hence,
+# the board that supports the particular chip or SoC.
+# CONFIG_ARCH_BOARD_name - for use in C code
+# CONFIG_ENDIAN_BIG - define if big endian (default is little endian)
+# CONFIG_BOARD_LOOPSPERMSEC - for delay loops
+# CONFIG_DRAM_SIZE - Describes the installed DRAM.
+# CONFIG_DRAM_START - The start address of DRAM (physical)
+# CONFIG_DRAM_END - Last address+1 of installed RAM
+# CONFIG_ARCH_IRQPRIO - The STM3240xxx supports interrupt prioritization
+# CONFIG_ARCH_FPU - The STM3240xxx supports a floating point unit (FPU)
+# (But, unfortunately, GCC does not support it).
+# 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_BOOTLOADER - Set if you are using a bootloader.
+# CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to board architecture.
+# CONFIG_ARCH_BUTTONS - Enable support for buttons. 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 calibrate
+# CONFIG_BOARD_LOOPSPERMSEC. You simply use a stop watch to measure
+# the 100 second delay then adjust CONFIG_BOARD_LOOPSPERMSEC until
+# the delay actually is 100 seconds.
+# CONFIG_ARCH_DMA - Support DMA initialization
+#
+CONFIG_ARCH=arm
+CONFIG_ARCH_ARM=y
+CONFIG_ARCH_CORTEXM4=y
+CONFIG_ARCH_CHIP=stm32
+CONFIG_ARCH_CHIP_STM32F407VG=y
+CONFIG_ARCH_BOARD=stm32f4discovery
+CONFIG_ARCH_BOARD_STM32F4_DISCOVERY=y
+CONFIG_BOARD_LOOPSPERMSEC=16717
+CONFIG_DRAM_SIZE=0x00030000
+CONFIG_DRAM_START=0x20000000
+CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
+CONFIG_ARCH_IRQPRIO=y
+CONFIG_ARCH_FPU=n
+CONFIG_ARCH_INTERRUPTSTACK=n
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_ARCH_BOOTLOADER=n
+CONFIG_ARCH_LEDS=n
+CONFIG_ARCH_BUTTONS=y
+CONFIG_ARCH_IRQBUTTONS=y
+CONFIG_ARCH_CALIBRATION=n
+CONFIG_ARCH_DMA=n
+
+#
+# Identify toolchain and linker options
+#
+CONFIG_STM32_CODESOURCERYW=y
+CONFIG_STM32_CODESOURCERYL=n
+CONFIG_STM32_ATOLLIC_LITE=n
+CONFIG_STM32_ATOLLIC_PRO=n
+CONFIG_STM32_DEVKITARM=n
+CONFIG_STM32_RAISONANCE=n
+CONFIG_STM32_BUILDROOT=n
+
+#
+# JTAG Enable settings (by default only SW-DP is enabled):
+#
+# CONFIG_STM32_DFU - Use the DFU bootloader, not JTAG
+#
+# JTAG Enable options:
+#
+# 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
+#
+CONFIG_STM32_DFU=n
+CONFIG_STM32_JTAG_FULL_ENABLE=n
+CONFIG_STM32_JTAG_NOJNTRST_ENABLE=n
+CONFIG_STM32_JTAG_SW_ENABLE=y
+
+#
+# Individual subsystems can be enabled:
+#
+# Individual subsystems can be enabled:
+# AHB1:
+CONFIG_STM32_CRC=n
+CONFIG_STM32_BKPSRAM=n
+CONFIG_STM32_CCMDATARAM=n
+CONFIG_STM32_DMA1=n
+CONFIG_STM32_DMA2=n
+CONFIG_STM32_ETHMAC=n
+CONFIG_STM32_OTGHS=n
+# AHB2:
+CONFIG_STM32_DCMI=n
+CONFIG_STM32_CRYP=n
+CONFIG_STM32_HASH=n
+CONFIG_STM32_RNG=n
+CONFIG_STM32_OTGFS=y
+# AHB3:
+CONFIG_STM32_FSMC=n
+# APB1:
+CONFIG_STM32_TIM2=n
+CONFIG_STM32_TIM3=n
+CONFIG_STM32_TIM4=n
+CONFIG_STM32_TIM5=n
+CONFIG_STM32_TIM6=n
+CONFIG_STM32_TIM7=n
+CONFIG_STM32_TIM12=n
+CONFIG_STM32_TIM13=n
+CONFIG_STM32_TIM14=n
+CONFIG_STM32_WWDG=n
+CONFIG_STM32_IWDG=n
+CONFIG_STM32_SPI2=n
+CONFIG_STM32_SPI3=n
+CONFIG_STM32_USART2=y
+CONFIG_STM32_USART3=n
+CONFIG_STM32_UART4=n
+CONFIG_STM32_UART5=n
+CONFIG_STM32_I2C1=n
+CONFIG_STM32_I2C2=n
+CONFIG_STM32_I2C3=n
+CONFIG_STM32_CAN1=n
+CONFIG_STM32_CAN2=n
+CONFIG_STM32_DAC=n
+CONFIG_STM32_PWR=y
+# APB2:
+CONFIG_STM32_TIM1=y
+CONFIG_STM32_TIM8=n
+CONFIG_STM32_USART1=n
+CONFIG_STM32_USART6=n
+CONFIG_STM32_ADC1=n
+CONFIG_STM32_ADC2=n
+CONFIG_STM32_ADC3=n
+CONFIG_STM32_SDIO=n
+CONFIG_STM32_SPI1=n
+CONFIG_STM32_SYSCFG=y
+CONFIG_STM32_TIM9=n
+CONFIG_STM32_TIM10=n
+CONFIG_STM32_TIM11=n
+
+#
+# Timer and I2C devices may need to the following to force power to be applied:
+#
+#CONFIG_STM32_FORCEPOWER=y
+
+#
+# STM32F40xxx specific serial device driver settings
+#
+# CONFIG_USARTn_SERIAL_CONSOLE - selects the USARTn for the
+# console and ttys0 (default is the USART1).
+# CONFIG_USARTn_RXBUFSIZE - Characters are buffered as received.
+# This specific the size of the receive buffer
+# CONFIG_USARTn_TXBUFSIZE - Characters are buffered before
+# being sent. This specific the size of the transmit buffer
+# CONFIG_USARTn_BAUD - The configure BAUD of the UART. Must be
+# CONFIG_USARTn_BITS - The number of bits. Must be either 7 or 8.
+# CONFIG_USARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
+# CONFIG_USARTn_2STOP - Two stop bits
+#
+CONFIG_USART1_SERIAL_CONSOLE=n
+CONFIG_USART2_SERIAL_CONSOLE=y
+CONFIG_USART3_SERIAL_CONSOLE=n
+CONFIG_USART4_SERIAL_CONSOLE=n
+CONFIG_USART5_SERIAL_CONSOLE=n
+
+CONFIG_USART1_TXBUFSIZE=128
+CONFIG_USART2_TXBUFSIZE=128
+CONFIG_USART3_TXBUFSIZE=128
+CONFIG_USART4_TXBUFSIZE=128
+CONFIG_USART5_TXBUFSIZE=128
+
+CONFIG_USART1_RXBUFSIZE=128
+CONFIG_USART2_RXBUFSIZE=128
+CONFIG_USART3_RXBUFSIZE=128
+CONFIG_USART4_RXBUFSIZE=128
+CONFIG_USART5_RXBUFSIZE=128
+
+CONFIG_USART1_BAUD=115200
+CONFIG_USART2_BAUD=115200
+CONFIG_USART3_BAUD=115200
+CONFIG_USART4_BAUD=115200
+CONFIG_USART5_BAUD=115200
+
+CONFIG_USART1_BITS=8
+CONFIG_USART2_BITS=8
+CONFIG_USART3_BITS=8
+CONFIG_USART4_BITS=8
+CONFIG_USART5_BITS=8
+
+CONFIG_USART1_PARITY=0
+CONFIG_USART2_PARITY=0
+CONFIG_USART3_PARITY=0
+CONFIG_USART4_PARITY=0
+CONFIG_USART5_PARITY=0
+
+CONFIG_USART1_2STOP=0
+CONFIG_USART2_2STOP=0
+CONFIG_USART3_2STOP=0
+CONFIG_USART4_2STOP=0
+CONFIG_USART5_2STOP=0
+
+#
+# STM32F40xxx specific SPI device driver settings
+#
+CONFIG_SPI_EXCHANGE=y
+
+#
+# STM32F40xxx specific CAN device driver settings
+#
+# 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=n
+CONFIG_CAN_EXTID=n
+#CONFIG_CAN_FIFOSIZE
+#CONFIG_CAN_NPENDINGRTR
+CONFIG_CAN_LOOPBACK=n
+CONFIG_CAN1_BAUD=700000
+CONFIG_CAN2_BAUD=700000
+
+#
+# STM32F40xxx Ethernet device driver settings
+#
+# CONFIG_STM32_PHYADDR - The 5-bit address of the PHY on the board
+# CONFIG_STM32_MII - Support Ethernet MII interface
+# CONFIG_STM32_MII_MCO1 - Use MCO1 to clock the MII interface
+# CONFIG_STM32_MII_MCO2 - Use MCO2 to clock the MII interface
+# CONFIG_STM32_RMII - Support Ethernet RMII interface
+# CONFIG_STM32_AUTONEG - Use PHY autonegotion to determine speed and mode
+# CONFIG_STM32_ETHFD - If CONFIG_STM32_AUTONEG is not defined, then this
+# may be defined to select full duplex mode. Default: half-duplex
+# CONFIG_STM32_ETH100MBPS - If CONFIG_STM32_AUTONEG is not defined, then this
+# may be defined to select 100 MBps speed. Default: 10 Mbps
+# CONFIG_STM32_PHYSR - This must be provided if CONFIG_STM32_AUTONEG is
+# defined. The PHY status register address may diff from PHY to PHY. This
+# configuration sets the address of the PHY status register.
+# CONFIG_STM32_PHYSR_SPEED - This must be provided if CONFIG_STM32_AUTONEG is
+# defined. This provides bit mask indicating 10 or 100MBps speed.
+# CONFIG_STM32_PHYSR_100MBPS - This must be provided if CONFIG_STM32_AUTONEG is
+# defined. This provides the value of the speed bit(s) indicating 100MBps speed.
+# CONFIG_STM32_PHYSR_MODE - This must be provided if CONFIG_STM32_AUTONEG is
+# defined. This provide bit mask indicating full or half duplex modes.
+# CONFIG_STM32_PHYSR_FULLDUPLEX - This must be provided if CONFIG_STM32_AUTONEG is
+# defined. This provides the value of the mode bits indicating full duplex mode.
+# CONFIG_STM32_ETH_PTP - Precision Time Protocol (PTP). Not supported
+# but some hooks are indicated with this condition.
+# CONFIG_STM32_ETHMAC_REGDEBUG - If CONFIG_DEBUG is also enabled, this will
+# generate far more debug output than you could ever care to see unless you
+# are debugging low-level Ethernet driver features.
+#
+CONFIG_STM32_PHYADDR=0x01
+CONFIG_STM32_MII=y
+CONFIG_STM32_MII_MCO1=y
+CONFIG_STM32_MII_MCO2=n
+CONFIG_STM32_RMII=n
+CONFIG_STM32_AUTONEG=y
+#CONFIG_STM32_ETHFD
+#CONFIG_STM32_ETH100MB
+CONFIG_STM32_PHYSR=16
+CONFIG_STM32_PHYSR_SPEED=0x0002
+CONFIG_STM32_PHYSR_100MBPS=0x0000
+CONFIG_STM32_PHYSR_MODE=0x0004
+CONFIG_STM32_PHYSR_FULLDUPLEX=0x0004
+CONFIG_STM32_ETH_PTP=n
+CONFIG_STM32_ETHMAC_REGDEBUG=n
+
+#
+# PWM configuration
+#
+# The stm32f4discovery has no real on-board PWM devices, but the board can be configured to output
+# a pulse train using TIM4 CH2. (Don't forget to set CONFIG_STM32_TIM4=y above)
+#
+CONFIG_PWM=n
+CONFIG_STM32_TIM4_PWM=y
+CONFIG_STM32_TIM4_CHANNEL=2
+
+#
+# Quadrature Encoder configuration.
+#
+# CONFIG_QENCODER - Enables the upper-half quadrature encoder driver
+# CONFIG_STM32_TIMn - Enables TIMn
+# CONFIG_STM32_TIMn_QE - Configures TIMn as a quadrature encoder
+# CONFIG_STM32_TIMn_QECLKOUT - Used to configure the TIMn prescaler value
+#
+# Uses TIM2 or TIM8. TIM2 also needs CONFIG_STM32_TIM2=y; TIM8 needs CONFIG_STM_TIM8=y above.
+#
+CONFIG_QENCODER=n
+CONFIG_STM32_TIM2_QE=n
+CONFIG_STM32_TIM2_QECLKOUT=28000000
+CONFIG_STM32_TIM8_QE=y
+CONFIG_STM32_TIM8_QECLKOUT=28000000
+
+#
+# General build options
+#
+# CONFIG_RRLOAD_BINARY - make the rrload binary format used with
+# BSPs from www.ridgerun.com using the tools/mkimage.sh script
+# CONFIG_INTELHEX_BINARY - make the Intel HEX binary format
+# used with many different loaders using the GNU objcopy program
+# Should not be selected if you are not using the GNU toolchain.
+# CONFIG_MOTOROLA_SREC - make the Motorola S-Record binary format
+# used with many different loaders using the GNU objcopy program
+# Should not be selected if you are not using the GNU toolchain.
+# CONFIG_RAW_BINARY - make a raw binary format file used with many
+# different loaders using the GNU objcopy program. This option
+# should not be selected if you are not using the GNU toolchain.
+# CONFIG_HAVE_LIBM - toolchain supports libm.a
+#
+CONFIG_RRLOAD_BINARY=n
+CONFIG_INTELHEX_BINARY=y
+CONFIG_MOTOROLA_SREC=n
+CONFIG_RAW_BINARY=y
+CONFIG_HAVE_LIBM=n
+
+#
+# General OS setup
+#
+# CONFIG_APPS_DIR - Identifies the relative path to the directory
+# that builds the application to link with NuttX. Default: ../apps
+# CONFIG_DEBUG - enables built-in debug options
+# CONFIG_DEBUG_VERBOSE - enables verbose debug output
+# CONFIG_DEBUG_SYMBOLS - build without optimization and with
+# debug symbols (needed for use with a debugger).
+# CONFIG_HAVE_CXX - Enable support for C++
+# CONFIG_HAVE_CXXINITIALIZE - The platform-specific logic includes support
+# for initialization of static C++ instances for this architecture
+# and for the selected toolchain (via up_cxxinitialize()).
+# CONFIG_MM_REGIONS - If the architecture includes multiple
+# regions of memory to allocate from, this specifies the
+# number of memory regions that the memory manager must
+# handle and enables the API mm_addregion(start, end);
+# CONFIG_ARCH_LOWPUTC - architecture supports low-level, boot
+# time console output
+# CONFIG_MSEC_PER_TICK - The default system timer is 100Hz
+# or MSEC_PER_TICK=10. This setting may be defined to
+# inform NuttX that the processor hardware is providing
+# system timer interrupts at some interrupt interval other
+# than 10 msec.
+# CONFIG_RR_INTERVAL - The round robin timeslice will be set
+# this number of milliseconds; Round robin scheduling can
+# be disabled by setting this value to zero.
+# CONFIG_SCHED_INSTRUMENTATION - enables instrumentation in
+# scheduler to monitor system performance
+# CONFIG_TASK_NAME_SIZE - Spcifies that maximum size of a
+# task name to save in the TCB. Useful if scheduler
+# instrumentation is selected. Set to zero to disable.
+# CONFIG_START_YEAR, CONFIG_START_MONTH, CONFIG_START_DAY -
+# Used to initialize the internal time logic.
+# CONFIG_GREGORIAN_TIME - Enables Gregorian time conversions.
+# You would only need this if you are concerned about accurate
+# time conversions in the past or in the distant future.
+# CONFIG_JULIAN_TIME - Enables Julian time conversions. You
+# would only need this if you are concerned about accurate
+# time conversion in the distand past. You must also define
+# CONFIG_GREGORIAN_TIME in order to use Julian time.
+# CONFIG_DEV_CONSOLE - Set if architecture-specific logic
+# provides /dev/console. Enables stdout, stderr, stdin.
+# CONFIG_DEV_LOWCONSOLE - Use the simple, low-level serial console
+# driver (minimul support)
+# CONFIG_MUTEX_TYPES: Set to enable support for recursive and
+# errorcheck mutexes. Enables pthread_mutexattr_settype().
+# CONFIG_PRIORITY_INHERITANCE : Set to enable support for priority
+# inheritance on mutexes and semaphores.
+# CONFIG_SEM_PREALLOCHOLDERS: This setting is only used if priority
+# inheritance is enabled. It defines the maximum number of
+# different threads (minus one) that can take counts on a
+# semaphore with priority inheritance support. This may be
+# set to zero if priority inheritance is disabled OR if you
+# are only using semaphores as mutexes (only one holder) OR
+# if no more than two threads participate using a counting
+# semaphore.
+# CONFIG_SEM_NNESTPRIO. If priority inheritance is enabled,
+# then this setting is the maximum number of higher priority
+# threads (minus 1) than can be waiting for another thread
+# to release a count on a semaphore. This value may be set
+# to zero if no more than one thread is expected to wait for
+# a semaphore.
+# CONFIG_FDCLONE_DISABLE. Disable cloning of all file descriptors
+# by task_create() when a new task is started. If set, all
+# files/drivers will appear to be closed in the new task.
+# CONFIG_FDCLONE_STDIO. Disable cloning of all but the first
+# three file descriptors (stdin, stdout, stderr) by task_create()
+# when a new task is started. If set, all files/drivers will
+# appear to be closed in the new task except for stdin, stdout,
+# and stderr.
+# CONFIG_SDCLONE_DISABLE. Disable cloning of all socket
+# desciptors by task_create() when a new task is started. If
+# set, all sockets will appear to be closed in the new task.
+# CONFIG_SCHED_WORKQUEUE. Create a dedicated "worker" thread to
+# handle delayed processing from interrupt handlers. This feature
+# is required for some drivers but, if there are not complaints,
+# can be safely disabled. The worker thread also performs
+# garbage collection -- completing any delayed memory deallocations
+# from interrupt handlers. If the worker thread is disabled,
+# then that clean will be performed by the IDLE thread instead
+# (which runs at the lowest of priority and may not be appropriate
+# if memory reclamation is of high priority). If CONFIG_SCHED_WORKQUEUE
+# is enabled, then the following options can also be used:
+# CONFIG_SCHED_WORKPRIORITY - The execution priority of the worker
+# thread. Default: 50
+# CONFIG_SCHED_WORKPERIOD - How often the worker thread checks for
+# work in units of microseconds. Default: 50*1000 (50 MS).
+# CONFIG_SCHED_WORKSTACKSIZE - The stack size allocated for the worker
+# thread. Default: CONFIG_IDLETHREAD_STACKSIZE.
+# CONFIG_SIG_SIGWORK - The signal number that will be used to wake-up
+# the worker thread. Default: 4
+# CONFIG_SCHED_WAITPID - Enable the waitpid() API
+# CONFIG_SCHED_ATEXIT - Enabled the atexit() API
+#
+#CONFIG_APPS_DIR=
+CONFIG_DEBUG=n
+CONFIG_DEBUG_VERBOSE=n
+CONFIG_DEBUG_SYMBOLS=n
+CONFIG_DEBUG_FS=n
+CONFIG_DEBUG_GRAPHICS=n
+CONFIG_DEBUG_LCD=n
+CONFIG_DEBUG_USB=n
+CONFIG_DEBUG_NET=n
+CONFIG_DEBUG_RTC=n
+CONFIG_DEBUG_ANALOG=n
+CONFIG_DEBUG_PWM=n
+CONFIG_DEBUG_CAN=n
+CONFIG_DEBUG_QENCODER=n
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_MM_REGIONS=2
+CONFIG_ARCH_LOWPUTC=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_INSTRUMENTATION=n
+CONFIG_TASK_NAME_SIZE=0
+CONFIG_START_YEAR=2011
+CONFIG_START_MONTH=12
+CONFIG_START_DAY=6
+CONFIG_GREGORIAN_TIME=n
+CONFIG_JULIAN_TIME=n
+CONFIG_DEV_CONSOLE=y
+CONFIG_DEV_LOWCONSOLE=n
+CONFIG_MUTEX_TYPES=n
+CONFIG_PRIORITY_INHERITANCE=n
+CONFIG_SEM_PREALLOCHOLDERS=0
+CONFIG_SEM_NNESTPRIO=0
+CONFIG_FDCLONE_DISABLE=n
+CONFIG_FDCLONE_STDIO=n
+CONFIG_SDCLONE_DISABLE=y
+CONFIG_SCHED_WORKQUEUE=y
+CONFIG_SCHED_WORKPRIORITY=50
+CONFIG_SCHED_WORKPERIOD=(50*1000)
+CONFIG_SCHED_WORKSTACKSIZE=1024
+CONFIG_SIG_SIGWORK=4
+CONFIG_SCHED_WAITPID=y
+CONFIG_SCHED_ATEXIT=n
+
+# General Power Management Configuration
+# (see include/nuttx/power/pm.h for many more standard configuration options)
+#
+CONFIG_PM=y
+CONFIG_PM_CUSTOMINIT=y
+CONFIG_IDLE_CUSTOM=y
+
+#
+# Board/Application-Specific Power Management Configuration.
+# These settings are probably not meaningful outside of this configuration
+#
+# Button support can be built into the configs/stm3210e-eval/pm configuration
+# to support PM testing. These would not be part of a normal, operational
+# configuration.
+#
+CONFIG_PM_BUTTONS=y
+CONFIG_PM_IRQBUTTON=y
+CONFIG_PM_BUTTON_NAME="User"
+
+#
+# Settings for NXFLAT
+#
+# CONFIG_NXFLAT. Enable support for the NXFLAT binary format.
+# This format will support execution of NuttX binaries located
+# in a ROMFS filesystem (see examples/nxflat).
+# CONFIG_NXFLAT_DUMPBUFFER. Dump a most buffers that NXFFLAT deals
+# with. CONFIG_DEBUG, CONFIG_DEBUG_VERBOSE, and
+# CONFIG_DEBUG_BINFMT have to be defined or
+# CONFIG_NXFLAT_DUMPBUFFER does nothing.
+# CONFIG_SYMTAB_ORDEREDBYNAME. Select if the system symbol table
+# is ordered by symbol name
+#
+CONFIG_NXFLAT=n
+CONFIG_NXFLAT_DUMPBUFFER=n
+CONFIG_SYMTAB_ORDEREDBYNAME=y
+
+#
+# The following can be used to disable categories of
+# APIs supported by the OS. If the compiler supports
+# weak functions, then it should not be necessary to
+# disable functions unless you want to restrict usage
+# of those APIs.
+#
+# There are certain dependency relationships in these
+# features.
+#
+# o mq_notify logic depends on signals to awaken tasks
+# waiting for queues to become full or empty.
+# o pthread_condtimedwait() depends on signals to wake
+# up waiting tasks.
+#
+CONFIG_DISABLE_CLOCK=n
+CONFIG_DISABLE_POSIX_TIMERS=n
+CONFIG_DISABLE_PTHREAD=n
+CONFIG_DISABLE_SIGNALS=n
+CONFIG_DISABLE_MQUEUE=n
+CONFIG_DISABLE_MOUNTPOINT=n
+CONFIG_DISABLE_ENVIRON=n
+CONFIG_DISABLE_POLL=y
+
+#
+# Misc libc settings
+#
+# CONFIG_NOPRINTF_FIELDWIDTH - sprintf-related logic is a
+# little smaller if we do not support fieldwidthes
+#
+CONFIG_NOPRINTF_FIELDWIDTH=n
+
+#
+# Allow for architecture optimized implementations
+#
+# The architecture can provide optimized versions of the
+# following to improve system performance
+#
+CONFIG_ARCH_MEMCPY=n
+CONFIG_ARCH_MEMCMP=n
+CONFIG_ARCH_MEMMOVE=n
+CONFIG_ARCH_MEMSET=n
+CONFIG_ARCH_STRCMP=n
+CONFIG_ARCH_STRCPY=n
+CONFIG_ARCH_STRNCPY=n
+CONFIG_ARCH_STRLEN=n
+CONFIG_ARCH_STRNLEN=n
+CONFIG_ARCH_BZERO=n
+
+#
+# Sizes of configurable things (0 disables)
+#
+# CONFIG_MAX_TASKS - The maximum number of simultaneously
+# active tasks. This value must be a power of two.
+# CONFIG_MAX_TASK_ARGS - This controls the maximum number of
+# of parameters that a task may receive (i.e., maxmum value
+# of 'argc')
+# CONFIG_NPTHREAD_KEYS - The number of items of thread-
+# specific data that can be retained
+# CONFIG_NFILE_DESCRIPTORS - The maximum number of file
+# descriptors (one for each open)
+# CONFIG_NFILE_STREAMS - The maximum number of streams that
+# can be fopen'ed
+# CONFIG_NAME_MAX - The maximum size of a file name.
+# CONFIG_STDIO_BUFFER_SIZE - Size of the buffer to allocate
+# on fopen. (Only if CONFIG_NFILE_STREAMS > 0)
+# CONFIG_STDIO_LINEBUFFER - If standard C buffered I/O is enabled
+# (CONFIG_STDIO_BUFFER_SIZE > 0), then this option may be added
+# to force automatic, line-oriented flushing the output buffer
+# for putc(), fputc(), putchar(), puts(), fputs(), printf(),
+# fprintf(), and vfprintf(). When a newline is encountered in
+# the output string, the output buffer will be flushed. This
+# (slightly) increases the NuttX footprint but supports the kind
+# of behavior that people expect for printf().
+# CONFIG_NUNGET_CHARS - Number of characters that can be
+# buffered by ungetc() (Only if CONFIG_NFILE_STREAMS > 0)
+# CONFIG_PREALLOC_MQ_MSGS - The number of pre-allocated message
+# structures. The system manages a pool of preallocated
+# message structures to minimize dynamic allocations
+# CONFIG_MQ_MAXMSGSIZE - Message structures are allocated with
+# a fixed payload size given by this settin (does not include
+# other message structure overhead.
+# CONFIG_MAX_WDOGPARMS - Maximum number of parameters that
+# can be passed to a watchdog handler
+# CONFIG_PREALLOC_WDOGS - The number of pre-allocated watchdog
+# structures. The system manages a pool of preallocated
+# watchdog structures to minimize dynamic allocations
+# CONFIG_PREALLOC_TIMERS - The number of pre-allocated POSIX
+# timer structures. The system manages a pool of preallocated
+# timer structures to minimize dynamic allocations. Set to
+# zero for all dynamic allocations.
+#
+CONFIG_MAX_TASKS=16
+CONFIG_MAX_TASK_ARGS=4
+CONFIG_NPTHREAD_KEYS=4
+CONFIG_NFILE_DESCRIPTORS=8
+CONFIG_NFILE_STREAMS=8
+CONFIG_NAME_MAX=32
+CONFIG_STDIO_BUFFER_SIZE=256
+CONFIG_STDIO_LINEBUFFER=y
+CONFIG_NUNGET_CHARS=2
+CONFIG_PREALLOC_MQ_MSGS=4
+CONFIG_MQ_MAXMSGSIZE=32
+CONFIG_MAX_WDOGPARMS=2
+CONFIG_PREALLOC_WDOGS=4
+CONFIG_PREALLOC_TIMERS=4
+
+#
+# Framebuffer driver options
+#
+CONFIG_FB_CMAP=n
+CONFIG_FB_HWCURSOR=n
+CONFIG_FB_HWCURSORIMAGE=n
+#CONFIG_FB_HWCURSORSIZE
+#CONFIG_FB_TRANSPARENCY
+
+#
+# Filesystem configuration
+#
+# CONFIG_FS_FAT - Enable FAT filesystem support
+# CONFIG_FAT_SECTORSIZE - Max supported sector size
+# CONFIG_FAT_LCNAMES - Enable use of the NT-style upper/lower case 8.3
+# file name support.
+# CONFIG_FAT_LFN - Enable FAT long file names. NOTE: Microsoft claims
+# patents on FAT long file name technology. Please read the
+# disclaimer in the top-level COPYING file and only enable this
+# feature if you understand these issues.
+# CONFIG_FAT_MAXFNAME - If CONFIG_FAT_LFN is defined, then the
+# default, maximum long file name is 255 bytes. This can eat up
+# a lot of memory (especially stack space). If you are willing
+# to live with some non-standard, short long file names, then
+# define this value. A good choice would be the same value as
+# selected for CONFIG_NAME_MAX which will limit the visibility
+# of longer file names anyway.
+# CONFIG_FS_NXFFS: Enable NuttX FLASH file system (NXFF) support.
+# CONFIG_NXFFS_ERASEDSTATE: The erased state of FLASH.
+# This must have one of the values of 0xff or 0x00.
+# Default: 0xff.
+# CONFIG_NXFFS_PACKTHRESHOLD: When packing flash file data,
+# don't both with file chunks smaller than this number of data bytes.
+# CONFIG_NXFFS_MAXNAMLEN: The maximum size of an NXFFS file name.
+# Default: 255.
+# CONFIG_NXFFS_PACKTHRESHOLD: When packing flash file data,
+# don't both with file chunks smaller than this number of data bytes.
+# Default: 32.
+# CONFIG_NXFFS_TAILTHRESHOLD: clean-up can either mean
+# packing files together toward the end of the file or, if file are
+# deleted at the end of the file, clean up can simply mean erasing
+# the end of FLASH memory so that it can be re-used again. However,
+# doing this can also harm the life of the FLASH part because it can
+# mean that the tail end of the FLASH is re-used too often. This
+# threshold determines if/when it is worth erased the tail end of FLASH
+# and making it available for re-use (and possible over-wear).
+# Default: 8192.
+# CONFIG_FS_ROMFS - Enable ROMFS filesystem support
+# CONFIG_FS_RAMMAP - For file systems that do not support XIP, this
+# option will enable a limited form of memory mapping that is
+# implemented by copying whole files into memory.
+#
+CONFIG_FS_FAT=n
+CONFIG_FAT_LCNAMES=y
+CONFIG_FAT_LFN=y
+CONFIG_FAT_MAXFNAME=32
+CONFIG_FS_NXFFS=n
+CONFIG_FS_ROMFS=n
+
+#
+# SPI-based MMC/SD driver
+#
+# CONFIG_MMCSD_NSLOTS
+# Number of MMC/SD slots supported by the driver
+# CONFIG_MMCSD_READONLY
+# Provide read-only access (default is read/write)
+# CONFIG_MMCSD_SPICLOCK - Maximum SPI clock to drive MMC/SD card.
+# Default is 20MHz.
+#
+CONFIG_MMCSD_NSLOTS=0
+CONFIG_MMCSD_READONLY=n
+CONFIG_MMCSD_SPICLOCK=12500000
+
+#
+# Block driver buffering
+#
+# CONFIG_FS_READAHEAD
+# Enable read-ahead buffering
+# CONFIG_FS_WRITEBUFFER
+# Enable write buffering
+#
+CONFIG_FS_READAHEAD=n
+CONFIG_FS_WRITEBUFFER=n
+
+#
+# STM32 SDIO-based MMC/SD driver
+#
+# CONFIG_SDIO_DMA
+# SDIO driver supports DMA
+# CONFIG_SDIO_PRI - Select SDIO interrupt prority. Default: 128
+# CONFIG_SDIO_DMAPRIO - Select SDIO DMA interrupt priority.
+# Default: Medium
+# CONFIG_SDIO_WIDTH_D1_ONLY - Select 1-bit transfer mode. Default:
+# 4-bit transfer mode.
+# CONFIG_MMCSD_MULTIBLOCK_DISABLE - Use only the single block transfer method.
+# This setting is used to work around buggy drivers that cannot handle
+# multiple block transfers.
+# CONFIG_MMCSD_MMCSUPPORT
+# Enable support for MMC cards
+# CONFIG_MMCSD_HAVECARDDETECT
+# SDIO driver card detection is 100% accurate
+#
+CONFIG_SDIO_DMA=n
+#CONFIG_SDIO_PRI=128
+#CONFIG_SDIO_DMAPRIO
+#CONFIG_SDIO_WIDTH_D1_ONLY
+CONFIG_MMCSD_MULTIBLOCK_DISABLE=y
+CONFIG_MMCSD_MMCSUPPORT=n
+CONFIG_MMCSD_HAVECARDDETECT=n
+
+#
+# TCP/IP and UDP support via uIP
+#
+# CONFIG_NET - Enable or disable all network features
+# CONFIG_NET_NOINTS - uIP not called from interrupt level.
+# CONFIG_NET_MULTIBUFFER - Use multiple input/output buffers (probably no)
+# CONFIG_NET_IPv6 - Build in support for IPv6
+# CONFIG_NSOCKET_DESCRIPTORS - Maximum number of socket descriptors per task/thread.
+# CONFIG_NET_SOCKOPTS - Enable or disable support for socket options
+# CONFIG_NET_BUFSIZE - uIP buffer size
+# CONFIG_NET_TCP - TCP support on or off
+# CONFIG_NET_TCP_CONNS - Maximum number of TCP connections (all tasks)
+# CONFIG_NET_TCP_READAHEAD_BUFSIZE - Size of TCP read-ahead buffers
+# CONFIG_NET_NTCP_READAHEAD_BUFFERS - Number of TCP read-ahead buffers (may be zero)
+# CONFIG_NET_TCPBACKLOG - Incoming connections pend in a backlog until
+# accept() is called. The size of the backlog is selected when listen() is called.
+# CONFIG_NET_MAX_LISTENPORTS - Maximum number of listening TCP ports (all tasks)
+# CONFIG_NET_UDP - UDP support on or off
+# CONFIG_NET_UDP_CHECKSUMS - UDP checksums on or off
+# CONFIG_NET_UDP_CONNS - The maximum amount of concurrent UDP connections
+# CONFIG_NET_ICMP - ICMP ping response support on or off
+# CONFIG_NET_ICMP_PING - ICMP ping request support on or off
+# CONFIG_NET_PINGADDRCONF - Use "ping" packet for setting IP address
+# CONFIG_NET_STATISTICS - uIP statistics on or off
+# CONFIG_NET_RECEIVE_WINDOW - The size of the advertised receiver's window
+# CONFIG_NET_BROADCAST - Broadcast support
+# CONFIG_NET_ARPTAB_SIZE - The size of the ARP table
+# CONFIG_NET_ARP_IPIN - Harvest IP/MAC address mappings from the ARP table
+# from incoming IP packets.
+# CONFIG_NET_MULTICAST - Outgoing multi-cast address support
+# CONFIG_NET_FWCACHE_SIZE - number of packets to remember when
+# looking for duplicates
+#
+CONFIG_NET=n
+CONFIG_NET_NOINTS=n
+CONFIG_NET_MULTIBUFFER=y
+CONFIG_NET_IPv6=n
+CONFIG_NSOCKET_DESCRIPTORS=10
+CONFIG_NET_SOCKOPTS=y
+CONFIG_NET_BUFSIZE=562
+CONFIG_NET_TCP=y
+CONFIG_NET_TCP_CONNS=40
+#CONFIG_NET_TCP_READAHEAD_BUFSIZE
+CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
+CONFIG_NET_TCPBACKLOG=y
+CONFIG_NET_MAX_LISTENPORTS=40
+CONFIG_NET_UDP=y
+CONFIG_NET_UDP_CHECKSUMS=y
+#CONFIG_NET_UDP_CONNS=10
+CONFIG_NET_ICMP=y
+CONFIG_NET_ICMP_PING=y
+#CONFIG_NET_PINGADDRCONF=0
+CONFIG_NET_STATISTICS=y
+#CONFIG_NET_RECEIVE_WINDOW=
+CONFIG_NET_BROADCAST=n
+#CONFIG_NET_ARPTAB_SIZE=8
+CONFIG_NET_ARP_IPIN=n
+CONFIG_NET_MULTICAST=n
+#CONFIG_NET_FWCACHE_SIZE=2
+
+#
+# UIP Network Utilities
+# CONFIG_NET_DHCP_LIGHT - Reduces size of DHCP
+# CONFIG_NET_RESOLV_ENTRIES - Number of resolver entries
+#
+CONFIG_NET_DHCP_LIGHT=n
+CONFIG_NET_RESOLV_ENTRIES=4
+
+#
+# RTC Configuration
+#
+# CONFIG_RTC - Enables general support for a hardware RTC. Specific
+# architectures may require other specific settings.
+# CONFIG_RTC_DATETIME - There are two general types of RTC: (1) A simple
+# battery backed counter that keeps the time when power is down, and (2)
+# A full date / time RTC the provides the date and time information, often
+# in BCD format. If CONFIG_RTC_DATETIME is selected, it specifies this
+# second kind of RTC. In this case, the RTC is used to "seed" the normal
+# NuttX timer and the NuttX system timer provides for higher resoution
+# time.
+# CONFIG_RTC_HIRES - If CONFIG_RTC_DATETIME not selected, then the simple,
+# battery backed counter is used. There are two different implementations
+# of such simple counters based on the time resolution of the counter:
+# The typical RTC keeps time to resolution of 1 second, usually
+# supporting a 32-bit time_t value. In this case, the RTC is used to
+# "seed" the normal NuttX timer and the NuttX timer provides for higher
+# resoution time. If CONFIG_RTC_HIRES is enabled in the NuttX configuration,
+# then the RTC provides higher resolution time and completely replaces the
+# system timer for purpose of date and time.
+# CONFIG_RTC_FREQUENCY - If CONFIG_RTC_HIRES is defined, then the frequency
+# of the high resolution RTC must be provided. If CONFIG_RTC_HIRES is
+# not defined, CONFIG_RTC_FREQUENCY is assumed to be one.
+# CONFIG_RTC_ALARM - Enable if the RTC hardware supports setting of an
+# alarm. A callback function will be executed when the alarm goes off
+#
+CONFIG_RTC=y
+CONFIG_RTC_DATETIME=y
+CONFIG_RTC_HIRES=n
+CONFIG_RTC_FREQUENCY=1
+CONFIG_RTC_ALARM=y
+
+#
+# USB Device Configuration
+#
+# CONFIG_USBDEV
+# Enables USB device support
+# CONFIG_USBDEV_ISOCHRONOUS
+# Build in extra support for isochronous endpoints
+# CONFIG_USBDEV_DUALSPEED
+# Hardware handles high and full speed operation (USB 2.0)
+# CONFIG_USBDEV_SELFPOWERED
+# Will cause USB features to indicate that the device is
+# self-powered
+# CONFIG_USBDEV_MAXPOWER
+# Maximum power consumption in mA
+# CONFIG_USBDEV_TRACE
+# Enables USB tracing for debug
+# CONFIG_USBDEV_TRACE_NRECORDS
+# Number of trace entries to remember
+#
+CONFIG_USBDEV=n
+CONFIG_USBDEV_ISOCHRONOUS=n
+CONFIG_USBDEV_DUALSPEED=n
+CONFIG_USBDEV_SELFPOWERED=y
+CONFIG_USBDEV_REMOTEWAKEUP=n
+CONFIG_USBDEV_MAXPOWER=100
+CONFIG_USBDEV_TRACE=n
+CONFIG_USBDEV_TRACE_NRECORDS=128
+
+#
+# USB Serial Device Configuration (Prolifics PL2303 emulation)
+#
+# CONFIG_PL2303
+# Enable compilation of the USB serial driver
+# CONFIG_PL2303_EPINTIN
+# The logical 7-bit address of a hardware endpoint that supports
+# interrupt IN operation
+# CONFIG_PL2303_EPBULKOUT
+# The logical 7-bit address of a hardware endpoint that supports
+# bulk OUT operation
+# CONFIG_PL2303_EPBULKIN
+# The logical 7-bit address of a hardware endpoint that supports
+# bulk IN operation
+# # CONFIG_PL2303_NWRREQS and CONFIG_PL2303_NRDREQS
+# The number of write/read requests that can be in flight
+# CONFIG_PL2303_VENDORID and CONFIG_PL2303_VENDORSTR
+# The vendor ID code/string
+# CONFIG_PL2303_PRODUCTID and CONFIG_PL2303_PRODUCTSTR
+# The product ID code/string
+# CONFIG_PL2303_RXBUFSIZE and CONFIG_PL2303_TXBUFSIZE
+# Size of the serial receive/transmit buffers
+#
+CONFIG_PL2303=n
+CONFIG_PL2303_EPINTIN=1
+CONFIG_PL2303_EPBULKOUT=2
+CONFIG_PL2303_EPBULKIN=3
+CONFIG_PL2303_NWRREQS=4
+CONFIG_PL2303_NRDREQS=4
+CONFIG_PL2303_VENDORID=0x067b
+CONFIG_PL2303_PRODUCTID=0x2303
+CONFIG_PL2303_VENDORSTR="Nuttx"
+CONFIG_PL2303_PRODUCTSTR="USBdev Serial"
+CONFIG_PL2303_RXBUFSIZE=512
+CONFIG_PL2303_TXBUFSIZE=512
+
+#
+# USB serial device class driver (Standard CDC ACM class)
+#
+# CONFIG_CDCACM
+# Enable compilation of the USB serial driver
+# CONFIG_CDCACM_CONSOLE
+# Configures the CDC/ACM serial port as the console device.
+# CONFIG_CDCACM_EP0MAXPACKET
+# Endpoint 0 max packet size. Default 64
+# CONFIG_CDCACM_EPINTIN
+# The logical 7-bit address of a hardware endpoint that supports
+# interrupt IN operation. Default 2.
+# CONFIG_CDCACM_EPINTIN_FSSIZE
+# Max package size for the interrupt IN endpoint if full speed mode.
+# Default 64.
+# CONFIG_CDCACM_EPINTIN_HSSIZE
+# Max package size for the interrupt IN endpoint if high speed mode.
+# Default 64
+# CONFIG_CDCACM_EPBULKOUT
+# The logical 7-bit address of a hardware endpoint that supports
+# bulk OUT operation. Default 4.
+# CONFIG_CDCACM_EPBULKOUT_FSSIZE
+# Max package size for the bulk OUT endpoint if full speed mode.
+# Default 64.
+# CONFIG_CDCACM_EPBULKOUT_HSSIZE
+# Max package size for the bulk OUT endpoint if high speed mode.
+# Default 512.
+# CONFIG_CDCACM_EPBULKIN
+# The logical 7-bit address of a hardware endpoint that supports
+# bulk IN operation. Default 3.
+# CONFIG_CDCACM_EPBULKIN_FSSIZE
+# Max package size for the bulk IN endpoint if full speed mode.
+# Default 64.
+# CONFIG_CDCACM_EPBULKIN_HSSIZE
+# Max package size for the bulk IN endpoint if high speed mode.
+# Default 512.
+# CONFIG_CDCACM_NWRREQS and CONFIG_CDCACM_NRDREQS
+# The number of write/read requests that can be in flight.
+# Default 256.
+# CONFIG_CDCACM_VENDORID and CONFIG_CDCACM_VENDORSTR
+# The vendor ID code/string. Default 0x0525 and "NuttX"
+# 0x0525 is the Netchip vendor and should not be used in any
+# products. This default VID was selected for compatibility with
+# the Linux CDC ACM default VID.
+# CONFIG_CDCACM_PRODUCTID and CONFIG_CDCACM_PRODUCTSTR
+# The product ID code/string. Default 0xa4a7 and "CDC/ACM Serial"
+# 0xa4a7 was selected for compatibility with the Linux CDC ACM
+# default PID.
+# CONFIG_CDCACM_RXBUFSIZE and CONFIG_CDCACM_TXBUFSIZE
+# Size of the serial receive/transmit buffers. Default 256.
+#
+CONFIG_CDCACM=n
+CONFIG_CDCACM_CONSOLE=n
+#CONFIG_CDCACM_EP0MAXPACKET
+CONFIG_CDCACM_EPINTIN=1
+#CONFIG_CDCACM_EPINTIN_FSSIZE
+#CONFIG_CDCACM_EPINTIN_HSSIZE
+CONFIG_CDCACM_EPBULKOUT=3
+#CONFIG_CDCACM_EPBULKOUT_FSSIZE
+#CONFIG_CDCACM_EPBULKOUT_HSSIZE
+CONFIG_CDCACM_EPBULKIN=2
+#CONFIG_CDCACM_EPBULKIN_FSSIZE
+#CONFIG_CDCACM_EPBULKIN_HSSIZE
+#CONFIG_CDCACM_NWRREQS
+#CONFIG_CDCACM_NRDREQS
+#CONFIG_CDCACM_VENDORID
+#CONFIG_CDCACM_VENDORSTR
+#CONFIG_CDCACM_PRODUCTID
+#CONFIG_CDCACM_PRODUCTSTR
+#CONFIG_CDCACM_RXBUFSIZE
+#CONFIG_CDCACM_TXBUFSIZE
+
+#
+# USB Storage Device Configuration
+#
+# CONFIG_USBMSC
+# Enable compilation of the USB storage driver
+# CONFIG_USBMSC_EP0MAXPACKET
+# Max packet size for endpoint 0
+# CONFIG_USBMSC_EPBULKOUT and CONFIG_USBMSC_EPBULKIN
+# The logical 7-bit address of a hardware endpoints that support
+# bulk OUT and IN operations
+# CONFIG_USBMSC_NWRREQS and CONFIG_USBMSC_NRDREQS
+# The number of write/read requests that can be in flight
+# CONFIG_USBMSC_BULKINREQLEN and CONFIG_USBMSC_BULKOUTREQLEN
+# The size of the buffer in each write/read request. This
+# value needs to be at least as large as the endpoint
+# maxpacket and ideally as large as a block device sector.
+# CONFIG_USBMSC_VENDORID and CONFIG_USBMSC_VENDORSTR
+# The vendor ID code/string
+# CONFIG_USBMSC_PRODUCTID and CONFIG_USBMSC_PRODUCTSTR
+# The product ID code/string
+# CONFIG_USBMSC_REMOVABLE
+# Select if the media is removable
+#
+CONFIG_USBMSC=n
+CONFIG_USBMSC_EP0MAXPACKET=64
+CONFIG_USBMSC_EPBULKOUT=2
+CONFIG_USBMSC_EPBULKIN=5
+CONFIG_USBMSC_NRDREQS=2
+CONFIG_USBMSC_NWRREQS=2
+CONFIG_USBMSC_BULKINREQLEN=256
+CONFIG_USBMSC_BULKOUTREQLEN=256
+CONFIG_USBMSC_VENDORID=0x584e
+CONFIG_USBMSC_VENDORSTR="NuttX"
+CONFIG_USBMSC_PRODUCTID=0x5342
+CONFIG_USBMSC_PRODUCTSTR="USBdev Storage"
+CONFIG_USBMSC_VERSIONNO=0x0399
+CONFIG_USBMSC_REMOVABLE=y
+
+#
+# Watchdog timer configuration
+#
+# CONFIG_WATCHDOG - Enable overall watchdog timer driver support.
+#
+# The STM32 also needs one of the following enabled:
+#
+# CONFIG_STM32_WWDG=y, OR
+# CONFIG_STM32_IWDG=y (but not both)
+#
+CONFIG_WATCHDOG=n
+
+#
+# Graphics related configuration settings
+#
+# CONFIG_NX
+# Enables overall support for graphics library and NX
+# CONFIG_NX_MULTIUSER
+# Configures NX in multi-user mode
+# CONFIG_NX_NPLANES
+# Some YUV color formats requires support for multiple planes,
+# one for each color component. Unless you have such special
+# hardware, this value should be undefined or set to 1
+# CONFIG_NX_DISABLE_1BPP, CONFIG_NX_DISABLE_2BPP,
+# CONFIG_NX_DISABLE_4BPP, CONFIG_NX_DISABLE_8BPP,
+# CONFIG_NX_DISABLE_16BPP, CONFIG_NX_DISABLE_24BPP, and
+# CONFIG_NX_DISABLE_32BPP
+# NX supports a variety of pixel depths. You can save some
+# memory by disabling support for unused color depths.
+# CONFIG_NX_PACKEDMSFIRST
+# If a pixel depth of less than 8-bits is used, then NX needs
+# to know if the pixels pack from the MS to LS or from LS to MS
+# CONFIG_NX_LCDDRIVER
+# By default, NX builds to use a framebuffer driver (see
+# include/nuttx/fb.h). If this option is defined, NX will
+# build to use an LCD driver (see include/nuttx/lcd/lcd.h).
+# CONFIG_LCD_MAXPOWER - The full-on power setting for an LCD device.
+# CONFIG_LCD_MAXCONTRAST - The maximum contrast value for an LCD device.
+# CONFIG_NX_MOUSE
+# Build in support for mouse input
+# CONFIG_NX_KBD
+# Build in support of keypad/keyboard input
+# CONFIG_NXTK_BORDERWIDTH
+# Specifies with with of the border (in pixels) used with
+# framed windows. The default is 4.
+# CONFIG_NXTK_BORDERCOLOR1 and CONFIG_NXTK_BORDERCOLOR2
+# Specify the colors of the border used with framed windows.
+# CONFIG_NXTK_BORDERCOLOR2 is the shadow side color and so
+# is normally darker. The default is medium and dark grey,
+# respectively
+# CONFIG_NXTK_AUTORAISE
+# If set, a window will be raised to the top if the mouse position
+# is over a visible portion of the window. Default: A mouse
+# button must be clicked over a visible portion of the window.
+# CONFIG_NXFONTS_CHARBITS
+# The number of bits in the character set. Current options are
+# only 7 and 8. The default is 7.
+# CONFIG_NXFONT_SANS17X22
+# This option enables support for a tiny, 17x22 san serif font
+# (font ID FONTID_SANS17X22 == 14).
+# CONFIG_NXFONT_SANS20X26
+# This option enables support for a tiny, 20x26 san serif font
+# (font ID FONTID_SANS20X26 == 15).
+# CONFIG_NXFONT_SANS23X27
+# This option enables support for a tiny, 23x27 san serif font
+# (font ID FONTID_SANS23X27 == 1).
+# CONFIG_NXFONT_SANS22X29
+# This option enables support for a small, 22x29 san serif font
+# (font ID FONTID_SANS22X29 == 2).
+# CONFIG_NXFONT_SANS28X37
+# This option enables support for a medium, 28x37 san serif font
+# (font ID FONTID_SANS28X37 == 3).
+# CONFIG_NXFONT_SANS39X48
+# This option enables support for a large, 39x48 san serif font
+# (font ID FONTID_SANS39X48 == 4).
+# CONFIG_NXFONT_SANS17X23B
+# This option enables support for a tiny, 17x23 san serif bold font
+# (font ID FONTID_SANS17X23B == 16).
+# CONFIG_NXFONT_SANS20X27B
+# This option enables support for a tiny, 20x27 san serif bold font
+# (font ID FONTID_SANS20X27B == 17).
+# CONFIG_NXFONT_SANS22X29B
+# This option enables support for a small, 22x29 san serif bold font
+# (font ID FONTID_SANS22X29B == 5).
+# CONFIG_NXFONT_SANS28X37B
+# This option enables support for a medium, 28x37 san serif bold font
+# (font ID FONTID_SANS28X37B == 6).
+# CONFIG_NXFONT_SANS40X49B
+# This option enables support for a large, 40x49 san serif bold font
+# (font ID FONTID_SANS40X49B == 7).
+# CONFIG_NXFONT_SERIF22X29
+# This option enables support for a small, 22x29 font (with serifs)
+# (font ID FONTID_SERIF22X29 == 8).
+# CONFIG_NXFONT_SERIF29X37
+# This option enables support for a medium, 29x37 font (with serifs)
+# (font ID FONTID_SERIF29X37 == 9).
+# CONFIG_NXFONT_SERIF38X48
+# This option enables support for a large, 38x48 font (with serifs)
+# (font ID FONTID_SERIF38X48 == 10).
+# CONFIG_NXFONT_SERIF22X28B
+# This option enables support for a small, 27x38 bold font (with serifs)
+# (font ID FONTID_SERIF22X28B == 11).
+# CONFIG_NXFONT_SERIF27X38B
+# This option enables support for a medium, 27x38 bold font (with serifs)
+# (font ID FONTID_SERIF27X38B == 12).
+# CONFIG_NXFONT_SERIF38X49B
+# This option enables support for a large, 38x49 bold font (with serifs)
+# (font ID FONTID_SERIF38X49B == 13).
+#
+# NX Multi-user only options:
+#
+# CONFIG_NX_BLOCKING
+# Open the client message queues in blocking mode. In this case,
+# nx_eventhandler() will not return until a message is received and processed.
+# CONFIG_NX_MXSERVERMSGS and CONFIG_NX_MXCLIENTMSGS
+# Specifies the maximum number of messages that can fit in
+# the message queues. No additional resources are allocated, but
+# this can be set to prevent flooding of the client or server with
+# too many messages (CONFIG_PREALLOC_MQ_MSGS controls how many
+# messages are pre-allocated).
+#
+CONFIG_NX=n
+CONFIG_NX_MULTIUSER=n
+CONFIG_NX_NPLANES=1
+CONFIG_NX_DISABLE_1BPP=y
+CONFIG_NX_DISABLE_2BPP=y
+CONFIG_NX_DISABLE_4BPP=y
+CONFIG_NX_DISABLE_8BPP=y
+CONFIG_NX_DISABLE_16BPP=n
+CONFIG_NX_DISABLE_24BPP=y
+CONFIG_NX_DISABLE_32BPP=y
+CONFIG_NX_PACKEDMSFIRST=n
+CONFIG_NX_LCDDRIVER=y
+CONFIG_LCD_MAXPOWER=100
+CONFIG_LCD_MAXCONTRAST=100
+CONFIG_NX_MOUSE=y
+CONFIG_NX_KBD=y
+#CONFIG_NXTK_BORDERWIDTH=4
+CONFIG_NXTK_BORDERCOLOR1=0xd69a
+CONFIG_NXTK_BORDERCOLOR2=0xad55
+CONFIG_NXTK_AUTORAISE=n
+CONFIG_NXFONT_SANS17X22=y
+CONFIG_NXFONT_SANS20X26=n
+CONFIG_NXFONT_SANS22X29=n
+CONFIG_NXFONT_SANS23X27=n
+CONFIG_NXFONT_SANS28X37=n
+CONFIG_NXFONT_SANS17X23B=n
+CONFIG_NXFONT_SANS20X27B=y
+CONFIG_NXFONT_SANS22X29B=y
+CONFIG_NXFONT_SANS28X37B=n
+CONFIG_NXFONT_SANS40X49B=n
+CONFIG_NXFONT_SERIF22X29=n
+CONFIG_NXFONT_SERIF29X37=n
+CONFIG_NXFONT_SERIF38X48=n
+CONFIG_NXFONT_SERIF22X28B=n
+CONFIG_NXFONT_SERIF27X38B=n
+CONFIG_NXFONT_SERIF38X49B=n
+CONFIG_NXFONTS_CHARBITS=7
+CONFIG_NX_BLOCKING=y
+CONFIG_NX_MXSERVERMSGS=32
+CONFIG_NX_MXCLIENTMSGS=16
+
+#
+# Settings for examples/uip
+#
+CONFIG_EXAMPLE_UIP_IPADDR=(10<<24|0<<16|0<<8|2)
+CONFIG_EXAMPLE_UIP_DRIPADDR=(10<<24|0<<16|0<<8|1)
+CONFIG_EXAMPLE_UIP_NETMASK=(255<<24|255<<16|255<<8|0)
+CONFIG_EXAMPLE_UIP_DHCPC=n
+
+#
+# Settings for examples/nettest
+CONFIG_EXAMPLE_NETTEST_SERVER=n
+CONFIG_EXAMPLE_NETTEST_PERFORMANCE=n
+CONFIG_EXAMPLE_NETTEST_NOMAC=y
+CONFIG_EXAMPLE_NETTEST_IPADDR=(10<<24|0<<16|0<<8|2)
+CONFIG_EXAMPLE_NETTEST_DRIPADDR=(10<<24|0<<16|0<<8|1)
+CONFIG_EXAMPLE_NETTEST_NETMASK=(255<<24|255<<16|255<<8|0)
+CONFIG_EXAMPLE_NETTEST_CLIENTIP=(10<<24|0<<16|0<<8|1)
+
+#
+# Settings for examples/ostest
+#
+CONFIG_EXAMPLES_OSTEST_LOOPS=1
+CONFIG_EXAMPLES_OSTEST_STACKSIZE=2048
+CONFIG_EXAMPLES_OSTEST_NBARRIER_THREADS=3
+
+#
+# Settings for apps/nshlib
+#
+# CONFIG_NSH_BUILTIN_APPS - Support external registered,
+# "named" applications that can be executed from the NSH
+# command line (see apps/README.txt for more information).
+# CONFIG_NSH_FILEIOSIZE - Size of a static I/O buffer
+# CONFIG_NSH_STRERROR - Use strerror(errno)
+# CONFIG_NSH_LINELEN - Maximum length of one command line
+# CONFIG_NSH_NESTDEPTH - Max number of nested if-then[-else]-fi
+# CONFIG_NSH_DISABLESCRIPT - Disable scripting support
+# CONFIG_NSH_DISABLEBG - Disable background commands
+# CONFIG_NSH_ROMFSETC - Use startup script in /etc
+# CONFIG_NSH_CONSOLE - Use serial console front end
+# CONFIG_NSH_TELNET - Use telnetd console front end
+# CONFIG_NSH_USBCONSOLE - If defined, then the an arbitrary USB device may be
+# used to as the NSH console. In this case, CONFIG_NSH_CONDEV must be
+# defined to indicate which USB device to use as the console.
+# CONFIG_NSH_USBCONDEV - If CONFIG_NSH_USBCONSOLE is set to 'y', then
+# CONFIG_NSH_USBCONDEV must also be set to select the USB device used to
+# support the NSH console. This should be set to the quoted name of a
+# readable/write-able USB driver such as: CONFIG_NSH_USBCONDEV="/dev/ttyACM0".
+# CONFIG_NSH_UBSDEV_MINOR - The minor device number of the USB device.
+# Default: 0
+# CONFIG_NSH_USBDEV_TRACEINIT - Is using a USB console and CONFIG_USB_TRACE
+# is defined, this will show initialization events
+# CONFIG_NSH_USBDEV_TRACECLASS - Is using a USB console and CONFIG_USB_TRACE
+# is defined, this will show class driver events
+# CONFIG_NSH_USBDEV_TRACETRANSFERS - Is using a USB console and CONFIG_USB_TRACE
+# is defined, this will show data transfer events
+# CONFIG_NSH_USBDEV_TRACECONTROLLER - Is using a USB console and CONFIG_USB_TRACE
+# is defined, this will show controller events
+# CONFIG_NSH_USBDEV_TRACEINTERRUPTS - Is using a USB console and CONFIG_USB_TRACE
+# is defined, this will show interrupt-related events.
+# CONFIG_NSH_CONDEV - If CONFIG_NSH_CONSOLE is set to 'y', then CONFIG_NSH_CONDEV
+# may also be set to select the serial device used to support the NSH console.
+# This should be set to the quoted name of a readable/write-able character
+# driver such as: CONFIG_NSH_CONDEV="/dev/ttyS1". This is useful, for example,
+# to separate the NSH command line from the system console when the system
+# console is used to provide debug output. Default: stdin and stdout (probably
+# "/dev/console")
+# CONFIG_NSH_ARCHINIT - Platform provides architecture
+# specific initialization (nsh_archinitialize()).
+#
+# If CONFIG_NSH_TELNET is selected:
+# CONFIG_NSH_IOBUFFER_SIZE -- Telnetd I/O buffer size
+# CONFIG_NSH_DHCPC - Obtain address using DHCP
+# CONFIG_NSH_IPADDR - Provides static IP address
+# CONFIG_NSH_DRIPADDR - Provides static router IP address
+# CONFIG_NSH_NETMASK - Provides static network mask
+# CONFIG_NSH_NOMAC - Use a bogus MAC address
+#
+# If CONFIG_NSH_ROMFSETC is selected:
+# CONFIG_NSH_ROMFSMOUNTPT - ROMFS mountpoint
+# CONFIG_NSH_INITSCRIPT - Relative path to init script
+# CONFIG_NSH_ROMFSDEVNO - ROMFS RAM device minor
+# CONFIG_NSH_ROMFSSECTSIZE - ROMF sector size
+# CONFIG_NSH_FATDEVNO - FAT FS RAM device minor
+# CONFIG_NSH_FATSECTSIZE - FAT FS sector size
+# CONFIG_NSH_FATNSECTORS - FAT FS number of sectors
+# CONFIG_NSH_FATMOUNTPT - FAT FS mountpoint
+#
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_STRERROR=n
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_NESTDEPTH=3
+CONFIG_NSH_DISABLESCRIPT=n
+CONFIG_NSH_DISABLEBG=n
+CONFIG_NSH_ROMFSETC=n
+CONFIG_NSH_CONSOLE=y
+CONFIG_NSH_TELNET=n
+CONFIG_NSH_USBCONSOLE=n
+CONFIG_NSH_USBCONDEV="/dev/ttyACM0"
+CONFIG_NSH_UBSDEV_MINOR=0
+CONFIG_NSH_USBDEV_TRACEINIT=n
+CONFIG_NSH_USBDEV_TRACECLASS=n
+CONFIG_NSH_USBDEV_TRACETRANSFERS=n
+CONFIG_NSH_USBDEV_TRACECONTROLLER=n
+CONFIG_NSH_USBDEV_TRACEINTERRUPTS=n
+#CONFIG_NSH_CONDEV
+CONFIG_NSH_ARCHINIT=n
+CONFIG_NSH_IOBUFFER_SIZE=512
+CONFIG_NSH_DHCPC=n
+CONFIG_NSH_NOMAC=y
+CONFIG_NSH_IPADDR=(10<<24|0<<16|0<<8|2)
+CONFIG_NSH_DRIPADDR=(10<<24|0<<16|0<<8|1)
+CONFIG_NSH_NETMASK=(255<<24|255<<16|255<<8|0)
+CONFIG_NSH_ROMFSMOUNTPT="/etc"
+CONFIG_NSH_INITSCRIPT="init.d/rcS"
+CONFIG_NSH_ROMFSDEVNO=0
+CONFIG_NSH_ROMFSSECTSIZE=64
+CONFIG_NSH_FATDEVNO=1
+CONFIG_NSH_FATSECTSIZE=512
+CONFIG_NSH_FATNSECTORS=1024
+CONFIG_NSH_FATMOUNTPT=/tmp
+
+#
+# Architecture-specific NSH options
+#
+CONFIG_NSH_MMCSDSPIPORTNO=0
+CONFIG_NSH_MMCSDSLOTNO=0
+CONFIG_NSH_MMCSDMINOR=0
+
+#
+# Settings for examples/usbserial
+#
+# CONFIG_EXAMPLES_USBSERIAL_INONLY
+# Only verify IN (device-to-host) data transfers. Default: both
+# CONFIG_EXAMPLES_USBSERIAL_OUTONLY
+# Only verify OUT (host-to-device) data transfers. Default: both
+# CONFIG_EXAMPLES_USBSERIAL_ONLYSMALL
+# Send only small, single packet messages. Default: Send large and small.
+# CONFIG_EXAMPLES_USBSERIAL_ONLYBIG
+# Send only large, multi-packet messages. Default: Send large and small.
+#
+CONFIG_EXAMPLES_USBSERIAL_INONLY=n
+CONFIG_EXAMPLES_USBSERIAL_OUTONLY=n
+CONFIG_EXAMPLES_USBSERIAL_ONLYSMALL=n
+CONFIG_EXAMPLES_USBSERIAL_ONLYBIG=n
+
+CONFIG_EXAMPLES_USBSERIAL_TRACEINIT=n
+CONFIG_EXAMPLES_USBSERIAL_TRACECLASS=n
+CONFIG_EXAMPLES_USBSERIAL_TRACETRANSFERS=n
+CONFIG_EXAMPLES_USBSERIAL_TRACECONTROLLER=n
+CONFIG_EXAMPLES_USBSERIAL_TRACEINTERRUPTS=n
+
+#
+# Settings for examples/cdcacm
+#
+# Configuration prequisites:
+#
+# CONFIG_USBDEV=y : USB device support must be enabled
+# CONFIG_CDCACM=y : The CDC/ACM driver must be built
+# CONFIG_NSH_BUILTIN_APPS : NSH built-in application support must be enabled
+#
+# Configuration options specific to this example:
+#
+# CONFIG_EXAMPLES_CDCACM_DEVMINOR
+# The minor number of the CDC/ACM device.
+# CONFIG_EXAMPLES_CDCACM_TRACEINIT
+# Show initialization events
+# CONFIG_EXAMPLES_CDCACM_TRACECLASS
+# Show class driver events
+# CONFIG_EXAMPLES_CDCACM_TRACETRANSFERS
+# Show data transfer events
+# CONFIG_EXAMPLES_CDCACM_TRACECONTROLLER
+# Show controller events
+# CONFIG_EXAMPLES_CDCACM_TRACEINTERRUPTS
+# Show interrupt-related events.
+#
+CONFIG_EXAMPLES_CDCACM_DEVMINOR=0
+CONFIG_EXAMPLES_CDCACM_TRACEINIT=n
+CONFIG_EXAMPLES_CDCACM_TRACECLASS=n
+CONFIG_EXAMPLES_CDCACM_TRACETRANSFERS=n
+CONFIG_EXAMPLES_CDCACM_TRACECONTROLLER=n
+CONFIG_EXAMPLES_CDCACM_TRACEINTERRUPTS=n
+
+#
+# Settings for examples/adc
+#
+# CONFIG_ADC - Enabled ADC support
+# CONFIG_NSH_BUILTIN_APPS - Build the ADC test as an NSH built-in function.
+# Default: Built as a standalone problem
+#
+# CONFIG_EXAMPLES_ADC_DEVPATH - The path to the ADC device. Default: /dev/adc0
+# CONFIG_EXAMPLES_ADC_NSAMPLES - If CONFIG_NSH_BUILTIN_APPS
+# is defined, then the number of samples is provided on the command line
+# and this value is ignored. Otherwise, this number of samples is
+# collected and the program terminates. Default: Samples are collected
+# indefinitely.
+# CONFIG_EXAMPLES_ADC_GROUPSIZE - The number of samples to read at once.
+# Default: 4
+
+#
+# Settings for examples/can
+#
+# CONFIG_CAN - Enables CAN support.
+# 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_NSH_BUILTIN_APPS - Build the CAN test as an NSH built-in function.
+# Default: Built as a standalone problem
+#
+# CONFIG_EXAMPLES_CAN_DEVPATH - The path to the CAN device. Default: /dev/can0
+# CONFIG_EXAMPLES_CAN_NMSGS - If CONFIG_NSH_BUILTIN_APPS
+# is defined, then the number of loops is provided on the command line
+# and this value is ignored. Otherwise, this number of CAN message is
+# collected and the program terminates. Default: If built as an NSH
+# built-in, the default is 32. Otherwise messages are sent and received
+# indefinitely.
+
+#
+# Settings for examples/pwm
+#
+# CONFIG_PWM - Enables PWM support.
+# CONFIG_NSH_BUILTIN_APPS - Build the PWM test as an NSH built-in function.
+# Default: Not built! The example can only be used as an NSH built-in
+# application
+#
+# CONFIG_EXAMPLES_PWM_DEVPATH - The path to the PWM device. Default: /dev/pwm0
+# CONFIG_EXAMPLES_PWM_FREQUENCY - The initial PWM frequency. Default: 100 Hz
+# CONFIG_EXAMPLES_PWM_DUTYPCT - The initial PWM duty as a percentage. Default: 50%
+# CONFIG_EXAMPLES_PWM_DURATION - The initial PWM pulse train duration in sectonds.
+# as a percentage. Default: 5 seconds
+
+#
+# Settings for examples/watchdog
+#
+
+# This test depends on these specific Watchdog/NSH configurations settings (your
+# specific watchdog hardware settings might require additional settings).
+#
+# CONFIG_WATCHDOG- Enables watchdog timer support support.
+# CONFIG_NSH_BUILTIN_APPS - Build the watchdog time test as an NSH
+# built-in function. Default: Not built! The example can only be used
+# as an NSH built-in application
+#
+# The STM32 also needs one of the following enabled:
+#
+# CONFIG_STM32_WWDG=y, OR
+# CONFIG_STM32_IWDG=y (but not both)
+#
+# Specific configuration options for this example include:
+#
+# CONFIG_EXAMPLES_WATCHDOG_DEVPATH - The path to the Watchdog device.
+# Default: /dev/watchdog0
+# CONFIG_EXAMPLES_WATCHDOG_PINGTIME - Time in milliseconds that the example
+# will ping the watchdog before letting the watchdog expire. Default: 5000
+# milliseconds
+# CONFIG_EXAMPLES_WATCHDOG_PINGDELAY - Time delay between pings in
+# milliseconds. Default: 500 milliseconds.
+# CONFIG_EXAMPLES_WATCHDOG_TIMEOUT - The watchdog timeout value in
+# milliseconds before the watchdog timer expires. Default: 2000
+# milliseconds.
+#
+# CONFIG_EXAMPLES_WATCHDOG_DEVPATH
+# CONFIG_EXAMPLES_WATCHDOG_PINGTIME
+# CONFIG_EXAMPLES_WATCHDOG_PINGDELAY
+# CONFIG_EXAMPLES_WATCHDOG_TIMEOUT
+
+#
+# Settings for examples/watchdog
+#
+# This test depends on these specific Watchdog/NSH configurations settings (your
+# specific watchdog hardware settings might require additional settings).
+#
+# CONFIG_WATCHDOG- Enables watchdog timer support support.
+# CONFIG_NSH_BUILTIN_APPS - Build the watchdog time test as an NSH
+# built-in function. Default: Not built! The example can only be used
+# as an NSH built-in application
+#
+# The STM32 also needs one of the following enabled:
+#
+# CONFIG_STM32_WWDG=y, OR
+# CONFIG_STM32_IWDG=y (but not both)
+#
+# Specific configuration options for this example include:
+#
+# CONFIG_EXAMPLES_WATCHDOG_DEVPATH - The path to the Watchdog device.
+# Default: /dev/watchdog0
+# CONFIG_EXAMPLES_WATCHDOG_PINGTIME - Time in milliseconds that the example
+# will ping the watchdog before letting the watchdog expire. Default: 5000
+# milliseconds
+# CONFIG_EXAMPLES_WATCHDOG_PINGDELAY - Time delay between pings in
+# milliseconds. Default: 500 milliseconds.
+# CONFIG_EXAMPLES_WATCHDOG_TIMEOUT - The watchdog timeout value in
+# milliseconds before the watchdog timer expires. Default: 2000
+# milliseconds.
+#
+# CONFIG_EXAMPLES_WATCHDOG_DEVPATH
+# CONFIG_EXAMPLES_WATCHDOG_PINGTIME
+# CONFIG_EXAMPLES_WATCHDOG_PINGDELAY
+# CONFIG_EXAMPLES_WATCHDOG_TIMEOUT
+
+#
+# Stack and heap information
+#
+# CONFIG_BOOT_RUNFROMFLASH - Some configurations support XIP
+# operation from FLASH but must copy initialized .data sections to RAM.
+# (should also be =n for the stm32f4discovery which always runs from flash)
+# CONFIG_BOOT_COPYTORAM - Some configurations boot in FLASH
+# but copy themselves entirely into RAM for better performance.
+# CONFIG_CUSTOM_STACK - The up_ implementation will handle
+# all stack operations outside of the nuttx model.
+# CONFIG_STACK_POINTER - The initial stack pointer (arm7tdmi only)
+# CONFIG_IDLETHREAD_STACKSIZE - The size of the initial stack.
+# This is the thread that (1) performs the inital boot of the system up
+# to the point where user_start() is spawned, and (2) there after is the
+# IDLE thread that executes only when there is no other thread ready to
+# run.
+# CONFIG_USERMAIN_STACKSIZE - The size of the stack to allocate
+# for the main user thread that begins at the user_start() entry point.
+# CONFIG_PTHREAD_STACK_MIN - Minimum pthread stack size
+# CONFIG_PTHREAD_STACK_DEFAULT - Default pthread stack size
+# CONFIG_HEAP_BASE - The beginning of the heap
+# CONFIG_HEAP_SIZE - The size of the heap
+#
+CONFIG_BOOT_RUNFROMFLASH=n
+CONFIG_BOOT_COPYTORAM=n
+CONFIG_CUSTOM_STACK=n
+#CONFIG_STACK_POINTER
+CONFIG_IDLETHREAD_STACKSIZE=1024
+CONFIG_USERMAIN_STACKSIZE=2048
+CONFIG_PTHREAD_STACK_MIN=256
+CONFIG_PTHREAD_STACK_DEFAULT=2048
+CONFIG_HEAP_BASE=
+CONFIG_HEAP_SIZE=
+
+# Application configuration
+
+CONFIG_APPS_DIR="../apps"
diff --git a/nuttx/configs/stm32f4discovery/pm/setenv.sh b/nuttx/configs/stm32f4discovery/pm/setenv.sh
new file mode 100644
index 000000000..ca0795942
--- /dev/null
+++ b/nuttx/configs/stm32f4discovery/pm/setenv.sh
@@ -0,0 +1,75 @@
+#!/bin/bash
+# configs/stm32f4discovery/pm/setenv.sh
+#
+# Copyright (C) 2012 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="${PATH}"
+fi
+
+# This the Cygwin path to the location where I installed the RIDE
+# toolchain under windows. You will also have to edit this if you install
+# the RIDE toolchain in any other location
+#export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/Raisonance/Ride/arm-gcc/bin"
+
+# This the Cygwin path to the location where I installed the CodeSourcery
+# toolchain under windows. You will also have to edit this if you install
+# the CodeSourcery toolchain in any other location
+export TOOLCHAIN_BIN="/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery G++ Lite/bin"
+
+# These are the Cygwin paths to the locations where I installed the Atollic
+# toolchain under windows. You will also have to edit this if you install
+# the Atollic toolchain in any other location. /usr/bin is added before
+# the Atollic bin path because there is are binaries named gcc.exe and g++.exe
+# at those locations as well.
+#export TOOLCHAIN_BIN="/usr/bin:/cygdrive/c/Program Files (x86)/Atollic/TrueSTUDIO for ARM Pro 2.3.0/ARMTools/bin"
+#export TOOLCHAIN_BIN="/usr/bin:/cygdrive/c/Program Files (x86)/Atollic/TrueSTUDIO for STMicroelectronics STM32 Lite 2.3.0/ARMTools/bin"
+
+# This the Cygwin path to the location where I build the buildroot
+# toolchain.
+#export TOOLCHAIN_BIN="${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 : ${PATH}"
diff --git a/nuttx/configs/stm32f4discovery/nsh/ld.script b/nuttx/configs/stm32f4discovery/scripts/ld.script
index 899cba9a8..67879e8d1 100644
--- a/nuttx/configs/stm32f4discovery/nsh/ld.script
+++ b/nuttx/configs/stm32f4discovery/scripts/ld.script
@@ -1,7 +1,7 @@
/****************************************************************************
- * configs/stm32f4discovery/nsh/ld.script
+ * configs/stm32f4discovery/scripts/ld.script
*
- * Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ * Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
diff --git a/nuttx/configs/stm32f4discovery/src/Makefile b/nuttx/configs/stm32f4discovery/src/Makefile
index 0b279b1ba..c1be57268 100644
--- a/nuttx/configs/stm32f4discovery/src/Makefile
+++ b/nuttx/configs/stm32f4discovery/src/Makefile
@@ -72,6 +72,18 @@ ifeq ($(CONFIG_WATCHDOG),y)
CSRCS += up_watchdog.c
endif
+ifeq ($(CONFIG_PM_CUSTOMINIT),y)
+CSRCS += up_pm.c
+endif
+
+ifeq ($(CONFIG_PM_BUTTONS),y)
+CSRCS += up_pmbuttons.c
+endif
+
+ifeq ($(CONFIG_IDLE_CUSTOM),y)
+CSRCS += up_idle.c
+endif
+
ifeq ($(CONFIG_STM32_FSMC),y)
CSRCS += up_extmem.c
diff --git a/nuttx/configs/stm32f4discovery/src/stm32f4discovery-internal.h b/nuttx/configs/stm32f4discovery/src/stm32f4discovery-internal.h
index f2afd74d5..917ccbd98 100644
--- a/nuttx/configs/stm32f4discovery/src/stm32f4discovery-internal.h
+++ b/nuttx/configs/stm32f4discovery/src/stm32f4discovery-internal.h
@@ -201,6 +201,14 @@ void stm32_enablefsmc(void);
void stm32_disablefsmc(void);
#endif
+/****************************************************************************
+ * Name: up_ledpminitialize
+ ****************************************************************************/
+
+#ifdef CONFIG_PM
+void up_ledpminitialize(void);
+#endif
+
#endif /* __ASSEMBLY__ */
#endif /* __CONFIGS_STM3240G_EVAL_SRC_STM3240G_INTERNAL_H */
diff --git a/nuttx/configs/stm32f4discovery/src/up_idle.c b/nuttx/configs/stm32f4discovery/src/up_idle.c
new file mode 100755
index 000000000..c8563acb9
--- /dev/null
+++ b/nuttx/configs/stm32f4discovery/src/up_idle.c
@@ -0,0 +1,277 @@
+/****************************************************************************
+ * configs/stm32f4discovery/src/up_idle.c
+ * arch/arm/src/board/up_idle.c
+ *
+ * Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ * Authors: Gregory Nutt <gnutt@nuttx.org>
+ * Diego Sanchez <dsanchez@nx-engineering.com>
+ *
+ * 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 <arch/board/board.h>
+#include <nuttx/config.h>
+
+#include <nuttx/arch.h>
+#include <nuttx/clock.h>
+#include <nuttx/power/pm.h>
+
+#include <debug.h>
+#include <nuttx/rtc.h>
+#include <arch/irq.h>
+
+#include "up_internal.h"
+#include "stm32_pm.h"
+#include "stm32_rcc.h"
+#include "stm32_exti.h"
+
+#include "stm32f4discovery-internal.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+/* Configuration ************************************************************/
+/* Does the board support an IDLE LED to indicate that the board is in the
+ * IDLE state?
+ */
+
+#if defined(CONFIG_ARCH_LEDS) && defined(LED_IDLE)
+# define BEGIN_IDLE() up_ledon(LED_IDLE)
+# define END_IDLE() up_ledoff(LED_IDLE)
+#else
+# define BEGIN_IDLE()
+# define END_IDLE()
+#endif
+
+/* Values for the RTC Alarm to wake up from the PM_STANDBY mode */
+
+#ifndef CONFIG_PM_ALARM_SEC
+# define CONFIG_PM_ALARM_SEC 3
+#endif
+
+#ifndef CONFIG_PM_ALARM_NSEC
+# define CONFIG_PM_ALARM_NSEC 0
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+#if defined(CONFIG_PM) && defined(CONFIG_RTC_ALARM)
+static void up_alarmcb(void);
+#endif
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_idlepm
+ *
+ * Description:
+ * Perform IDLE state power management.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_PM
+static void up_idlepm(void)
+{
+#ifdef CONFIG_RTC_ALARM
+ struct timespec alarmtime;
+#endif
+ static enum pm_state_e oldstate = PM_NORMAL;
+ enum pm_state_e newstate;
+ irqstate_t flags;
+ int ret;
+
+ /* Decide, which power saving level can be obtained */
+
+ newstate = pm_checkstate();
+
+ /* Check for state changes */
+
+ if (newstate != oldstate)
+ {
+ lldbg("newstate= %d oldstate=%d\n", newstate, oldstate);
+
+ flags = irqsave();
+
+ /* Force the global state change */
+
+ ret = pm_changestate(newstate);
+ if (ret < 0)
+ {
+ /* The new state change failed, revert to the preceding state */
+
+ (void)pm_changestate(oldstate);
+
+ /* No state change... */
+
+ goto errout;
+ }
+
+ /* Then perform board-specific, state-dependent logic here */
+
+ switch (newstate)
+ {
+ case PM_NORMAL:
+ {
+ }
+ break;
+
+ case PM_IDLE:
+ {
+ }
+ break;
+
+ case PM_STANDBY:
+ {
+#ifdef CONFIG_RTC_ALARM
+ /* Disable RTC Alarm interrupt */
+
+#warning "missing logic"
+
+ /* Configure the RTC alarm to Auto Wake the system */
+
+#warning "missing logic"
+
+ /* The tv_nsec value must not exceed 1,000,000,000. That
+ * would be an invalid time.
+ */
+
+#warning "missing logic"
+
+ /* Set the alarm */
+
+#warning "missing logic"
+#endif
+ /* Call the STM32 stop mode */
+
+ stm32_pmstop(true);
+
+ /* We have been re-awakened by some even: A button press?
+ * An alarm? Cancel any pending alarm and resume the normal
+ * operation.
+ */
+
+#ifdef CONFIG_RTC_ALARM
+#warning "missing logic"
+#endif
+ /* Resume normal operation */
+
+ pm_changestate(PM_NORMAL);
+ newstate = PM_NORMAL;
+ }
+ break;
+
+ case PM_SLEEP:
+ {
+ /* We should not return from standby mode. The only way out
+ * of standby is via the reset path.
+ */
+
+ (void)stm32_pmstandby();
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ /* Save the new state */
+
+ oldstate = newstate;
+
+errout:
+ irqrestore(flags);
+ }
+}
+#else
+# define up_idlepm()
+#endif
+
+/************************************************************************************
+ * Name: up_alarmcb
+ *
+ * Description:
+ * RTC alarm service routine
+ *
+ ************************************************************************************/
+
+#if defined(CONFIG_PM) && defined(CONFIG_RTC_ALARM)
+static void up_alarmcb(void)
+{
+ /* This alarm occurs because there wasn't any EXTI interrupt during the
+ * PM_STANDBY period. So just go to sleep.
+ */
+
+ pm_changestate(PM_SLEEP);
+}
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_idle
+ *
+ * Description:
+ * up_idle() is the logic that will be executed when their is no other
+ * ready-to-run task. This is processor idle time and will continue until
+ * some interrupt occurs to cause a context switch from the idle task.
+ *
+ * Processing in this state may be processor-specific. e.g., this is where
+ * power management operations might be performed.
+ *
+ ****************************************************************************/
+
+void up_idle(void)
+{
+#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_TIMER_INTS)
+ /* If the system is idle and there are no timer interrupts, then process
+ * "fake" timer interrupts. Hopefully, something will wake up.
+ */
+
+ sched_process_timer();
+#else
+
+ /* Perform IDLE mode power management */
+
+ BEGIN_IDLE();
+ up_idlepm();
+ END_IDLE();
+#endif
+}
+
diff --git a/nuttx/configs/stm32f4discovery/src/up_pm.c b/nuttx/configs/stm32f4discovery/src/up_pm.c
new file mode 100755
index 000000000..3ee0675cb
--- /dev/null
+++ b/nuttx/configs/stm32f4discovery/src/up_pm.c
@@ -0,0 +1,107 @@
+/****************************************************************************
+ * configs/stm32f4discovery/src/up_pm.c
+ * arch/arm/src/board/up_pm.c
+ *
+ * Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ * Authors: Gregory Nutt <gnutt@nuttx.org>
+ * Diego Sanchez <dsanchez@nx-engineering.com>
+ *
+ * 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 <nuttx/power/pm.h>
+
+#include "up_internal.h"
+#include "stm32_pm.h"
+#include "stm32f4discovery-internal.h"
+
+#ifdef CONFIG_PM
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_pminitialize
+ *
+ * Description:
+ * This function is called by MCU-specific logic at power-on reset in
+ * order to provide one-time initialization the power management subystem.
+ * This function must be called *very* early in the intialization sequence
+ * *before* any other device drivers are initialized (since they may
+ * attempt to register with the power management subsystem).
+ *
+ * Input parameters:
+ * None.
+ *
+ * Returned value:
+ * None.
+ *
+ ****************************************************************************/
+
+void up_pminitialize(void)
+{
+ /* Then initialize the NuttX power management subsystem proper */
+
+ pm_initialize();
+
+#if defined(CONFIG_IDLE_CUSTOM) && defined(CONFIG_PM_BUTTONS)
+ /* Initialize the buttons to wake up the system from low power modes */
+
+ up_pmbuttons();
+#endif
+
+ /* Initialize the LED PM */
+
+ up_ledpminitialize();
+}
+
+#endif /* CONFIG_PM */
diff --git a/nuttx/configs/stm32f4discovery/src/up_pmbuttons.c b/nuttx/configs/stm32f4discovery/src/up_pmbuttons.c
new file mode 100755
index 000000000..619eaa91c
--- /dev/null
+++ b/nuttx/configs/stm32f4discovery/src/up_pmbuttons.c
@@ -0,0 +1,202 @@
+/****************************************************************************
+ * configs/stm32f4discovery/src/up_pmbuttons.c
+ * arch/arm/src/board/up_pmbuttons.c
+ *
+ * Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ * Authors: Gregory Nutt <gnutt@nuttx.org>
+ * Diego Sanchez <dsanchez@nx-engineering.com>
+ *
+ * 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 <arch/board/board.h>
+#include <nuttx/config.h>
+
+#include <nuttx/power/pm.h>
+#include <arch/irq.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include "up_arch.h"
+#include "nvic.h"
+#include "stm32_pwr.h"
+#include "stm32_pm.h"
+#include "stm32f4discovery-internal.h"
+
+#if defined(CONFIG_PM) && defined(CONFIG_IDLE_CUSTOM) && defined(CONFIG_PM_BUTTONS)
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+/* Configuration ************************************************************/
+
+#ifndef CONFIG_ARCH_BUTTONS
+# error "CONFIG_ARCH_BUTTONS is not defined in the configuration"
+#endif
+
+#ifndef CONFIG_PM_BUTTONS_NAME0
+# define CONFIG_PM_BUTTONS_NAME0 "BUTTON0"
+#endif
+
+#ifndef CONFIG_PM_IRQBUTTON
+# define CONFIG_PM_IRQBUTTON 0
+#endif
+
+#ifndef CONFIG_PM_BUTTON_ACTIVITY
+# define CONFIG_PM_BUTTON_ACTIVITY 10
+#endif
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+struct button_info_s
+{
+ FAR const char *name; /* Name for the button */
+#ifdef CONFIG_ARCH_IRQBUTTONS
+ xcpt_t handler; /* Button interrupt handler */
+#endif
+};
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_IRQBUTTONS
+static void button_handler(int id, int irq);
+
+#if MIN_BUTTON < 1
+static int button0_handler(int irq, FAR void *context);
+#endif
+#if MIN_BUTTON < 2 && MAX_BUTTON > 0
+static int button1_handler(int irq, FAR void *context);
+#endif
+#if MIN_BUTTON < 3 && MAX_BUTTON > 1
+static int button2_handler(int irq, FAR void *context);
+#endif
+#if MIN_BUTTON < 4 && MAX_BUTTON > 2
+static int button3_handler(int irq, FAR void *context);
+#endif
+#if MIN_BUTTON < 5 && MAX_BUTTON > 3
+static int button4_handler(int irq, FAR void *context);
+#endif
+#if MIN_BUTTON < 6 && MAX_BUTTON > 4
+static int button5_handler(int irq, FAR void *context);
+#endif
+#if MIN_BUTTON < 7 && MAX_BUTTON > 5
+static int button6_handler(int irq, FAR void *context);
+#endif
+#if MAX_BUTTON > 6
+static int button7_handler(int irq, FAR void *context);
+#endif
+#endif /* CONFIG_ARCH_IRQBUTTONS */
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/* Button Names */
+
+static const struct button_info_s g_buttoninfo =
+{
+ CONFIG_PM_BUTTONS_NAME0,
+#ifdef CONFIG_ARCH_IRQBUTTONS
+ button0_handler,
+#endif
+};
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: button_handler
+ *
+ * Description:
+ * Handle a button wake-up interrupt
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_IRQBUTTONS
+static void button_handler(int id, int irq)
+{
+ /* At this point the MCU should have already awakened. The state
+ * change will be handled in the IDLE loop when the system is re-awakened
+ * The button interrupt handler should be totally ignorant of the PM
+ * activities and should report button activity as if nothing
+ * special happened.
+ */
+
+ pm_activity(CONFIG_PM_BUTTON_ACTIVITY);
+}
+
+static int button0_handler(int irq, FAR void *context)
+{
+ button_handler(0, irq);
+ return OK;
+}
+
+#endif /* CONFIG_ARCH_IRQBUTTONS */
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_pmbuttons
+ *
+ * Description:
+ * Configure the user button of the STM32f4discovery board as EXTI,
+ * so it is able to wakeup the MCU from the PM_STANDBY mode
+ *
+ ****************************************************************************/
+
+void up_pmbuttons(void)
+{
+ /* Initialize the button GPIOs */
+
+ up_buttoninit();
+
+#ifdef CONFIG_ARCH_IRQBUTTONS
+ xcpt_t oldhandler = up_irqbutton(0, g_buttoninfo.handler);
+
+ if (oldhandler != NULL)
+ {
+ lib_lowprintf("WARNING: oldhandler:%p is not NULL! "
+ "Button events may be lost or aliased!\n",
+ oldhandler);
+ }
+#endif
+}
+
+#endif /* CONFIG_PM && CONFIG_IDLE_CUSTOM && CONFIG_PM_BUTTONS)*/
diff --git a/nuttx/configs/stm32f4discovery/src/up_userleds.c b/nuttx/configs/stm32f4discovery/src/up_userleds.c
index d5eb699ef..28ca4108c 100644
--- a/nuttx/configs/stm32f4discovery/src/up_userleds.c
+++ b/nuttx/configs/stm32f4discovery/src/up_userleds.c
@@ -45,6 +45,7 @@
#include <debug.h>
#include <arch/board/board.h>
+#include <nuttx/power/pm.h>
#include "chip.h"
#include "up_arch.h"
@@ -83,10 +84,109 @@ static uint32_t g_ledcfg[BOARD_NLEDS] =
};
/****************************************************************************
+ * Private Function Protototypes
+ ****************************************************************************/
+
+/* LED Power Management */
+
+#ifdef CONFIG_PM
+static void led_pm_notify(struct pm_callback_s *cb, enum pm_state_e pmstate);
+static int led_pm_prepare(struct pm_callback_s *cb, enum pm_state_e pmstate);
+#endif
+
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+#ifdef CONFIG_PM
+static struct pm_callback_s g_ledscb =
+{
+ .notify = led_pm_notify,
+ .prepare = led_pm_prepare,
+};
+#endif
+
+/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
+ * Name: led_pm_notify
+ *
+ * Description:
+ * Notify the driver of new power state. This callback is called after
+ * all drivers have had the opportunity to prepare for the new power state.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_PM
+static void led_pm_notify(struct pm_callback_s *cb , enum pm_state_e pmstate)
+{
+ switch (pmstate)
+ {
+ case(PM_NORMAL):
+ {
+ /* Restore normal LEDs operation */
+
+ }
+ break;
+
+ case(PM_IDLE):
+ {
+ /* Entering IDLE mode - Turn leds off */
+
+ }
+ break;
+
+ case(PM_STANDBY):
+ {
+ /* Entering STANDBY mode - Logic for PM_STANDBY goes here */
+
+ }
+ break;
+
+ case(PM_SLEEP):
+ {
+ /* Entering SLEEP mode - Logic for PM_SLEEP goes here */
+
+ }
+ break;
+
+ default:
+ {
+ /* Should not get here */
+
+ }
+ break;
+ }
+}
+#endif
+
+/****************************************************************************
+ * Name: led_pm_prepare
+ *
+ * Description:
+ * Request the driver to prepare for a new power state. This is a warning
+ * that the system is about to enter into a new power state. The driver
+ * should begin whatever operations that may be required to enter power
+ * state. The driver may abort the state change mode by returning a
+ * non-zero value from the callback function.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_PM
+static int led_pm_prepare(struct pm_callback_s *cb , enum pm_state_e pmstate)
+{
+ /* No preparation to change power modes is required by the LEDs driver.
+ * We always accept the state change by returning OK.
+ */
+
+ return OK;
+}
+#endif
+
+/****************************************************************************
* Public Functions
****************************************************************************/
@@ -128,4 +228,21 @@ void stm32_setleds(uint8_t ledset)
stm32_gpiowrite(BOARD_LED4, (ledset & BOARD_LED4_BIT) == 0);
}
+/****************************************************************************
+ * Name: up_ledpminitialize
+ ****************************************************************************/
+
+#ifdef CONFIG_PM
+void up_ledpminitialize(void)
+{
+ /* Register to receive power management callbacks */
+
+ int ret = pm_register(&g_ledscb);
+ if (ret != OK)
+ {
+ up_ledon(LED_ASSERTION);
+ }
+}
+#endif /* CONFIG_PM */
+
#endif /* !CONFIG_ARCH_LEDS */
diff --git a/nuttx/include/termios.h b/nuttx/include/termios.h
index 4398b6449..e381814e3 100644
--- a/nuttx/include/termios.h
+++ b/nuttx/include/termios.h
@@ -247,8 +247,8 @@ extern "C" {
/* The cfgetspeed() function is a non-POSIX function will extract the baud
* from the termios structure to which the termiosp argument points. NuttX
* does not control input/output baud independently. Both must be the same.
- * The POSIX standard interfaces, cfisetispeed() and cfisetospeed() are
- * supported by simply defining them to be cfsetspeed().
+ * The POSIX standard interfaces, cfigetispeed() and cfigetospeed() are
+ * supported by simply defining them to be cfgetspeed().
*/
EXTERN speed_t cfgetspeed(FAR const struct termios *termiosp);
diff --git a/nuttx/lib/termios/lib_cfsetspeed.c b/nuttx/lib/termios/lib_cfsetspeed.c
index f2e11f577..bf9e66064 100644
--- a/nuttx/lib/termios/lib_cfsetspeed.c
+++ b/nuttx/lib/termios/lib_cfsetspeed.c
@@ -74,6 +74,15 @@
* NOTE 1: NuttX does not control input/output baud independently. Both
* must be the same. The POSIX standard interfaces, cfisetispeed() and
* cfisetospeed() are defined to be cfsetspeed() in termios.h.
+ *
+ * NOTE 3: A consequence of NOTE 1 is that you should never attempt to
+ * set the input and output baud to different values.
+ *
+ * Also, the following POSIX requirement cannot be supported: "If the input
+ * baud rate stored in the termios structure pointed to by termios_p is 0,
+ * the input baud rate given to the hardware will be the same as the output
+ * baud rate stored in the termios structure."
+ *
* NOTE 2. In Nuttx, the speed_t is defined to be uint32_t and the baud
* encodings of termios.h are the actual baud values themselves. Therefore,
* any baud value can be provided as the speed argument here. However, if
@@ -87,7 +96,7 @@
* termiosp->c_ispeed = baud;
*
* cfsetospeed(termiosp, BOTHER);
- * termiosp->c_ospeed = baud;
+ * termiosp->c_ospeed = baud;
*
* Input Parameters:
* termiosp - The termiosp argument is a pointer to a termios structure.