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Add STM32 PM sleep support

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4953 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2012-07-18 22:54:33 +00:00
parent 5a627bbbc2
commit e633932dae
5 changed files with 145 additions and 4 deletions
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2
arch/arm/src/stm32/Make.defs
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@ -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

2
arch/arm/src/stm32/stm32_exti.h
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@ -42,6 +42,8 @@
#include <nuttx/config.h>
#include <nuttx/irq.h>
#include "chip.h"
#include "chip/stm32_exti.h"

6
arch/arm/src/stm32/stm32_exti_alarm.c
View File

@ -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 */

22
arch/arm/src/stm32/stm32_pm.h
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@ -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
}

117
arch/arm/src/stm32/stm32_pmsleep.c Normal file
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@ -0,0 +1,117 @@
/****************************************************************************
* arch/arm/src/stm32/stm32_pmsleep.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 <stdbool.h>
#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
}