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mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_STM32L1/sleep.c@636:b0d178e9fa10, 2016-07-07 (annotated)

Committer:
lzbpli
Date:
Thu Jul 07 06:48:59 2016 +0000
Revision:
636:b0d178e9fa10
Parent:
522:aee49fe30179 
l053

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 76:aeb1df146756 1 /* mbed Microcontroller Library
mbed_official 76:aeb1df146756 2 *******************************************************************************
mbed_official 76:aeb1df146756 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 76:aeb1df146756 4 * All rights reserved.
mbed_official 76:aeb1df146756 5 *
mbed_official 76:aeb1df146756 6 * Redistribution and use in source and binary forms, with or without
mbed_official 76:aeb1df146756 7 * modification, are permitted provided that the following conditions are met:
mbed_official 76:aeb1df146756 8 *
mbed_official 76:aeb1df146756 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 76:aeb1df146756 10 * this list of conditions and the following disclaimer.
mbed_official 76:aeb1df146756 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 76:aeb1df146756 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 76:aeb1df146756 13 * and/or other materials provided with the distribution.
mbed_official 76:aeb1df146756 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 76:aeb1df146756 15 * may be used to endorse or promote products derived from this software
mbed_official 76:aeb1df146756 16 * without specific prior written permission.
mbed_official 76:aeb1df146756 17 *
mbed_official 76:aeb1df146756 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 76:aeb1df146756 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 76:aeb1df146756 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 76:aeb1df146756 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 76:aeb1df146756 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 76:aeb1df146756 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 76:aeb1df146756 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 76:aeb1df146756 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 76:aeb1df146756 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 76:aeb1df146756 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 76:aeb1df146756 28 *******************************************************************************
mbed_official 76:aeb1df146756 29 */
mbed_official 76:aeb1df146756 30 #include "sleep_api.h"
mbed_official 174:8bb9f3a33240 31
mbed_official 174:8bb9f3a33240 32 #if DEVICE_SLEEP
mbed_official 174:8bb9f3a33240 33
mbed_official 76:aeb1df146756 34 #include "cmsis.h"
mbed_official 76:aeb1df146756 35
mbed_official 354:e67efb2aab0e 36 static TIM_HandleTypeDef TimMasterHandle;
mbed_official 84:f54042cbc282 37
mbed_official 354:e67efb2aab0e 38 void sleep(void)
mbed_official 354:e67efb2aab0e 39 {
mbed_official 354:e67efb2aab0e 40 // Disable HAL tick interrupt
mbed_official 354:e67efb2aab0e 41 TimMasterHandle.Instance = TIM5;
mbed_official 354:e67efb2aab0e 42 __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC2);
mbed_official 354:e67efb2aab0e 43
mbed_official 354:e67efb2aab0e 44 // Request to enter SLEEP mode
mbed_official 354:e67efb2aab0e 45 HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
mbed_official 354:e67efb2aab0e 46
mbed_official 354:e67efb2aab0e 47 // Enable HAL tick interrupt
mbed_official 354:e67efb2aab0e 48 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2);
mbed_official 76:aeb1df146756 49 }
mbed_official 76:aeb1df146756 50
mbed_official 354:e67efb2aab0e 51 void deepsleep(void)
mbed_official 354:e67efb2aab0e 52 {
mbed_official 522:aee49fe30179 53 #if defined(TARGET_MOTE_L152RC)
mbed_official 522:aee49fe30179 54 int8_t STOPEntry = PWR_STOPENTRY_WFI;
mbed_official 522:aee49fe30179 55 #endif
mbed_official 522:aee49fe30179 56
mbed_official 354:e67efb2aab0e 57 // Disable HAL tick interrupt
mbed_official 354:e67efb2aab0e 58 TimMasterHandle.Instance = TIM5;
mbed_official 354:e67efb2aab0e 59 __HAL_TIM_DISABLE_IT(&TimMasterHandle, TIM_IT_CC2);
mbed_official 174:8bb9f3a33240 60
mbed_official 522:aee49fe30179 61 #if defined(TARGET_MOTE_L152RC)
mbed_official 522:aee49fe30179 62 /* Select the regulator state in Stop mode: Set PDDS and LPSDSR bit according to PWR_Regulator value */
mbed_official 522:aee49fe30179 63 MODIFY_REG(PWR->CR, (PWR_CR_PDDS | PWR_CR_LPSDSR), PWR_LOWPOWERREGULATOR_ON);
mbed_official 522:aee49fe30179 64
mbed_official 522:aee49fe30179 65 /* Set SLEEPDEEP bit of Cortex System Control Register */
mbed_official 522:aee49fe30179 66 SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
mbed_official 522:aee49fe30179 67
mbed_official 522:aee49fe30179 68 /* Select Stop mode entry --------------------------------------------------*/
mbed_official 522:aee49fe30179 69 if(STOPEntry == PWR_STOPENTRY_WFI)
mbed_official 522:aee49fe30179 70 {
mbed_official 522:aee49fe30179 71 /* Request Wait For Interrupt */
mbed_official 522:aee49fe30179 72 __WFI();
mbed_official 522:aee49fe30179 73 }
mbed_official 522:aee49fe30179 74 else
mbed_official 522:aee49fe30179 75 {
mbed_official 522:aee49fe30179 76 /* Request Wait For Event */
mbed_official 522:aee49fe30179 77 __SEV();
mbed_official 522:aee49fe30179 78 __WFE();
mbed_official 522:aee49fe30179 79 __WFE();
mbed_official 522:aee49fe30179 80 }
mbed_official 522:aee49fe30179 81 __NOP();
mbed_official 522:aee49fe30179 82 __NOP();
mbed_official 522:aee49fe30179 83 __NOP();
mbed_official 522:aee49fe30179 84 /* Reset SLEEPDEEP bit of Cortex System Control Register */
mbed_official 522:aee49fe30179 85 CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
mbed_official 522:aee49fe30179 86 #else
mbed_official 354:e67efb2aab0e 87 // Request to enter STOP mode with regulator in low power mode
mbed_official 354:e67efb2aab0e 88 HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
mbed_official 522:aee49fe30179 89 #endif
mbed_official 174:8bb9f3a33240 90
mbed_official 129:0182c99221bc 91 // After wake-up from STOP reconfigure the PLL
mbed_official 129:0182c99221bc 92 SetSysClock();
mbed_official 354:e67efb2aab0e 93
mbed_official 354:e67efb2aab0e 94 // Enable HAL tick interrupt
mbed_official 354:e67efb2aab0e 95 __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC2);
mbed_official 76:aeb1df146756 96 }
mbed_official 174:8bb9f3a33240 97
mbed_official 174:8bb9f3a33240 98 #endif