From c27590b084adfd6138643432c97f6d04963a6f0f Mon Sep 17 00:00:00 2001 From: patacongo Date: Wed, 18 Jul 2012 22:54:33 +0000 Subject: Add STM32 PM sleep support git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4953 42af7a65-404d-4744-a932-0658087f49c3 --- nuttx/arch/arm/src/stm32/Make.defs | 2 +- nuttx/arch/arm/src/stm32/stm32_exti.h | 2 + nuttx/arch/arm/src/stm32/stm32_exti_alarm.c | 6 +- nuttx/arch/arm/src/stm32/stm32_pm.h | 22 ++++++ nuttx/arch/arm/src/stm32/stm32_pmsleep.c | 117 ++++++++++++++++++++++++++++ 5 files changed, 145 insertions(+), 4 deletions(-) create mode 100644 nuttx/arch/arm/src/stm32/stm32_pmsleep.c (limited to 'nuttx/arch/arm/src/stm32') diff --git a/nuttx/arch/arm/src/stm32/Make.defs b/nuttx/arch/arm/src/stm32/Make.defs index 0493630b9..9cdf1314e 100644 --- a/nuttx/arch/arm/src/stm32/Make.defs +++ b/nuttx/arch/arm/src/stm32/Make.defs @@ -84,7 +84,7 @@ ifneq ($(CONFIG_IDLE_CUSTOM),y) CHIP_CSRCS += stm32_idle.c endif -CHIP_CSRCS += stm32_pmstop.c stm32_pmstandby.c +CHIP_CSRCS += stm32_pmstop.c stm32_pmstandby.c stm32_pmsleep.c ifneq ($(CONFIG_PM_CUSTOMINIT),y) CHIP_CSRCS += stm32_pminitialize.c diff --git a/nuttx/arch/arm/src/stm32/stm32_exti.h b/nuttx/arch/arm/src/stm32/stm32_exti.h index 563e7a91b..6dddf3836 100644 --- a/nuttx/arch/arm/src/stm32/stm32_exti.h +++ b/nuttx/arch/arm/src/stm32/stm32_exti.h @@ -42,6 +42,8 @@ #include +#include + #include "chip.h" #include "chip/stm32_exti.h" diff --git a/nuttx/arch/arm/src/stm32/stm32_exti_alarm.c b/nuttx/arch/arm/src/stm32/stm32_exti_alarm.c index fbffdc4dd..819e85c85 100644 --- a/nuttx/arch/arm/src/stm32/stm32_exti_alarm.c +++ b/nuttx/arch/arm/src/stm32/stm32_exti_alarm.c @@ -135,12 +135,12 @@ xcpt_t stm32_exti_alarm(bool risingedge, bool fallingedge, bool event, if (func) { - irq_attach(STM32_IRQ_RTCALRM, stm32_exti_alarm_isr); - up_enable_irq(STM32_IRQ_RTCALRM); + irq_attach(STM32_IRQ_RTCALR, stm32_exti_alarm_isr); + up_enable_irq(STM32_IRQ_RTCALR); } else { - up_disable_irq(STM32_IRQ_RTCALRM); + up_disable_irq(STM32_IRQ_RTCALR); } /* Configure rising/falling edges */ diff --git a/nuttx/arch/arm/src/stm32/stm32_pm.h b/nuttx/arch/arm/src/stm32/stm32_pm.h index d08458d78..be040d296 100644 --- a/nuttx/arch/arm/src/stm32/stm32_pm.h +++ b/nuttx/arch/arm/src/stm32/stm32_pm.h @@ -111,6 +111,28 @@ EXTERN int stm32_pmstop(bool lpds); EXTERN int stm32_pmstandby(void); +/**************************************************************************** + * Name: stm32_pmsleep + * + * Description: + * Enter SLEEP mode. + * + * Input Parameters: + * sleeponexit - true: SLEEPONEXIT bit is set when the WFI instruction is + * executed, the MCU enters Sleep mode as soon as it + * exits the lowest priority ISR. + * - false: SLEEPONEXIT bit is cleared, the MCU enters Sleep mode + * as soon as WFI or WFE instruction is executed. + * Returned Value: + * Zero means that the STOP was successfully entered and the system has + * been re-awakened. The internal volatage regulator is back to its + * original state. Otherwise, STOP mode did not occur and a negated + * errno value is returned to indicate the cause of the failure. + * + ****************************************************************************/ + +EXTERN void stm32_pmsleep(bool sleeponexit); + #undef EXTERN #ifdef __cplusplus } diff --git a/nuttx/arch/arm/src/stm32/stm32_pmsleep.c b/nuttx/arch/arm/src/stm32/stm32_pmsleep.c new file mode 100644 index 000000000..5ebbcbf40 --- /dev/null +++ b/nuttx/arch/arm/src/stm32/stm32_pmsleep.c @@ -0,0 +1,117 @@ +/**************************************************************************** + * arch/arm/src/stm32/stm32_pmsleep.c + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Authors: Gregory Nutt + * Diego Sanchez + * + * 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 + +#include + +#include "up_arch.h" +#include "nvic.h" +#include "stm32_pwr.h" +#include "stm32_pm.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: stm32_pmsleep + * + * Description: + * Enter SLEEP mode. + * + * Input Parameters: + * sleeponexit - true: SLEEPONEXIT bit is set when the WFI instruction is + * executed, the MCU enters Sleep mode as soon as it + * exits the lowest priority ISR. + * - false: SLEEPONEXIT bit is cleared, the MCU enters Sleep mode + * as soon as WFI or WFE instruction is executed. + * Returned Value: + * Zero means that the STOP was successfully entered and the system has + * been re-awakened. The internal volatage regulator is back to its + * original state. Otherwise, STOP mode did not occur and a negated + * errno value is returned to indicate the cause of the failure. + * + ****************************************************************************/ + +void stm32_pmsleep(bool sleeponexit) +{ + uint32_t regval; + + /* Clear SLEEPDEEP bit of Cortex System Control Register */ + + regval = getreg32(NVIC_SYSCON); + regval &= ~NVIC_SYSCON_SLEEPDEEP; + if (sleeponexit) + { + regval |= NVIC_SYSCON_SLEEPONEXIT; + } + else + { + regval &= ~NVIC_SYSCON_SLEEPONEXIT; + } + + putreg32(regval, NVIC_SYSCON); + + /* Sleep until the wakeup interrupt or event occurs */ + +#ifdef CONFIG_PM_WFE + /* Mode: SLEEP + Entry with WFE */ + + __asm("wfe"); +#else + /* Mode: SLEEP + Entry with WFI */ + + __asm("wfi"); +#endif +} -- cgit v1.2.3