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mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_STM32L4/sleep.c@636:b0d178e9fa10, 2016-07-07 (annotated)

Committer:
lzbpli
Date:
Thu Jul 07 06:48:59 2016 +0000
Revision:
636:b0d178e9fa10
Parent:
610:813dcc80987e 
l053

Who changed what in which revision?

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mbed_official 610:813dcc80987e 1 /* mbed Microcontroller Library
mbed_official 610:813dcc80987e 2 *******************************************************************************
mbed_official 610:813dcc80987e 3 * Copyright (c) 2015, STMicroelectronics
mbed_official 610:813dcc80987e 4 * All rights reserved.
mbed_official 610:813dcc80987e 5 *
mbed_official 610:813dcc80987e 6 * Redistribution and use in source and binary forms, with or without
mbed_official 610:813dcc80987e 7 * modification, are permitted provided that the following conditions are met:
mbed_official 610:813dcc80987e 8 *
mbed_official 610:813dcc80987e 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 610:813dcc80987e 10 * this list of conditions and the following disclaimer.
mbed_official 610:813dcc80987e 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 610:813dcc80987e 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 610:813dcc80987e 13 * and/or other materials provided with the distribution.
mbed_official 610:813dcc80987e 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 610:813dcc80987e 15 * may be used to endorse or promote products derived from this software
mbed_official 610:813dcc80987e 16 * without specific prior written permission.
mbed_official 610:813dcc80987e 17 *
mbed_official 610:813dcc80987e 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 610:813dcc80987e 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 610:813dcc80987e 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 610:813dcc80987e 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 610:813dcc80987e 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 610:813dcc80987e 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 610:813dcc80987e 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 610:813dcc80987e 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 610:813dcc80987e 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 610:813dcc80987e 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 610:813dcc80987e 28 *******************************************************************************
mbed_official 610:813dcc80987e 29 */
mbed_official 610:813dcc80987e 30 #include "sleep_api.h"
mbed_official 610:813dcc80987e 31
mbed_official 610:813dcc80987e 32 #if DEVICE_SLEEP
mbed_official 610:813dcc80987e 33
mbed_official 610:813dcc80987e 34 #include "cmsis.h"
mbed_official 610:813dcc80987e 35 #include "hal_tick.h"
mbed_official 610:813dcc80987e 36
mbed_official 610:813dcc80987e 37 static TIM_HandleTypeDef TimMasterHandle;
mbed_official 610:813dcc80987e 38
mbed_official 610:813dcc80987e 39 void sleep(void)
mbed_official 610:813dcc80987e 40 {
mbed_official 610:813dcc80987e 41 // Disable HAL tick interrupt
mbed_official 610:813dcc80987e 42 TimMasterHandle.Instance = TIM_MST;
mbed_official 610:813dcc80987e 43 __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC2);
mbed_official 610:813dcc80987e 44
mbed_official 610:813dcc80987e 45 // Request to enter SLEEP mode
mbed_official 610:813dcc80987e 46 HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
mbed_official 610:813dcc80987e 47
mbed_official 610:813dcc80987e 48 // Enable HAL tick interrupt
mbed_official 610:813dcc80987e 49 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2);
mbed_official 610:813dcc80987e 50 }
mbed_official 610:813dcc80987e 51
mbed_official 610:813dcc80987e 52 void deepsleep(void)
mbed_official 610:813dcc80987e 53 {
mbed_official 610:813dcc80987e 54 // Disable HAL tick interrupt
mbed_official 610:813dcc80987e 55 TimMasterHandle.Instance = TIM_MST;
mbed_official 610:813dcc80987e 56 __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC2);
mbed_official 610:813dcc80987e 57
mbed_official 610:813dcc80987e 58 // Request to enter STOP mode with regulator in low power mode
mbed_official 610:813dcc80987e 59 HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
mbed_official 610:813dcc80987e 60
mbed_official 610:813dcc80987e 61 // After wake-up from STOP reconfigure the PLL
mbed_official 610:813dcc80987e 62 SetSysClock();
mbed_official 610:813dcc80987e 63
mbed_official 610:813dcc80987e 64 // Enable HAL tick interrupt
mbed_official 610:813dcc80987e 65 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2);
mbed_official 610:813dcc80987e 66 }
mbed_official 610:813dcc80987e 67
mbed_official 610:813dcc80987e 68 #endif