Elijah Stanger-Jones / mbed-dev-f303

test

targets/TARGET_STM/sleep.c@2:4364577b5ad8, 2020-11-09 (annotated)

Committer:
elijahsj
Date:
Mon Nov 09 00:33:19 2020 -0500
Revision:
2:4364577b5ad8
Parent:
1:8a094db1347f 
copied mbed library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elijahsj 1:8a094db1347f 1 /* mbed Microcontroller Library
elijahsj 1:8a094db1347f 2 *******************************************************************************
elijahsj 1:8a094db1347f 3 * Copyright (c) 2016, STMicroelectronics
elijahsj 1:8a094db1347f 4 * All rights reserved.
elijahsj 1:8a094db1347f 5 *
elijahsj 1:8a094db1347f 6 * Redistribution and use in source and binary forms, with or without
elijahsj 1:8a094db1347f 7 * modification, are permitted provided that the following conditions are met:
elijahsj 1:8a094db1347f 8 *
elijahsj 1:8a094db1347f 9 * 1. Redistributions of source code must retain the above copyright notice,
elijahsj 1:8a094db1347f 10 * this list of conditions and the following disclaimer.
elijahsj 1:8a094db1347f 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
elijahsj 1:8a094db1347f 12 * this list of conditions and the following disclaimer in the documentation
elijahsj 1:8a094db1347f 13 * and/or other materials provided with the distribution.
elijahsj 1:8a094db1347f 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
elijahsj 1:8a094db1347f 15 * may be used to endorse or promote products derived from this software
elijahsj 1:8a094db1347f 16 * without specific prior written permission.
elijahsj 1:8a094db1347f 17 *
elijahsj 1:8a094db1347f 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
elijahsj 1:8a094db1347f 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
elijahsj 1:8a094db1347f 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
elijahsj 1:8a094db1347f 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
elijahsj 1:8a094db1347f 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
elijahsj 1:8a094db1347f 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
elijahsj 1:8a094db1347f 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
elijahsj 1:8a094db1347f 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
elijahsj 1:8a094db1347f 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
elijahsj 1:8a094db1347f 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
elijahsj 1:8a094db1347f 28 *******************************************************************************
elijahsj 1:8a094db1347f 29 */
elijahsj 1:8a094db1347f 30 #if DEVICE_SLEEP
elijahsj 1:8a094db1347f 31
elijahsj 1:8a094db1347f 32 #include "cmsis.h"
elijahsj 1:8a094db1347f 33 #include "us_ticker_api.h"
elijahsj 1:8a094db1347f 34 #include "sleep_api.h"
elijahsj 1:8a094db1347f 35 #include "rtc_api_hal.h"
elijahsj 1:8a094db1347f 36 #include "hal_tick.h"
elijahsj 1:8a094db1347f 37 #include "mbed_critical.h"
elijahsj 1:8a094db1347f 38
elijahsj 1:8a094db1347f 39 extern void HAL_SuspendTick(void);
elijahsj 1:8a094db1347f 40 extern void HAL_ResumeTick(void);
elijahsj 1:8a094db1347f 41
elijahsj 1:8a094db1347f 42 void hal_sleep(void)
elijahsj 1:8a094db1347f 43 {
elijahsj 1:8a094db1347f 44 // Disable IRQs
elijahsj 1:8a094db1347f 45 core_util_critical_section_enter();
elijahsj 1:8a094db1347f 46
elijahsj 1:8a094db1347f 47 // Stop HAL tick to avoid to exit sleep in 1ms
elijahsj 1:8a094db1347f 48 HAL_SuspendTick();
elijahsj 1:8a094db1347f 49 // Request to enter SLEEP mode
elijahsj 1:8a094db1347f 50 HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
elijahsj 1:8a094db1347f 51 // Restart HAL tick
elijahsj 1:8a094db1347f 52 HAL_ResumeTick();
elijahsj 1:8a094db1347f 53
elijahsj 1:8a094db1347f 54 // Enable IRQs
elijahsj 1:8a094db1347f 55 core_util_critical_section_exit();
elijahsj 1:8a094db1347f 56 }
elijahsj 1:8a094db1347f 57
elijahsj 1:8a094db1347f 58 void hal_deepsleep(void)
elijahsj 1:8a094db1347f 59 {
elijahsj 1:8a094db1347f 60 // Disable IRQs
elijahsj 1:8a094db1347f 61 core_util_critical_section_enter();
elijahsj 1:8a094db1347f 62
elijahsj 1:8a094db1347f 63 // Stop HAL tick
elijahsj 1:8a094db1347f 64 HAL_SuspendTick();
elijahsj 1:8a094db1347f 65 uint32_t EnterTimeUS = us_ticker_read();
elijahsj 1:8a094db1347f 66
elijahsj 1:8a094db1347f 67 // Request to enter STOP mode with regulator in low power mode
elijahsj 1:8a094db1347f 68 #if TARGET_STM32L4
elijahsj 1:8a094db1347f 69 int pwrClockEnabled = __HAL_RCC_PWR_IS_CLK_ENABLED();
elijahsj 1:8a094db1347f 70 int lowPowerModeEnabled = PWR->CR1 & PWR_CR1_LPR;
elijahsj 1:8a094db1347f 71
elijahsj 1:8a094db1347f 72 if (!pwrClockEnabled) {
elijahsj 1:8a094db1347f 73 __HAL_RCC_PWR_CLK_ENABLE();
elijahsj 1:8a094db1347f 74 }
elijahsj 1:8a094db1347f 75 if (lowPowerModeEnabled) {
elijahsj 1:8a094db1347f 76 HAL_PWREx_DisableLowPowerRunMode();
elijahsj 1:8a094db1347f 77 }
elijahsj 1:8a094db1347f 78
elijahsj 1:8a094db1347f 79 HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);
elijahsj 1:8a094db1347f 80
elijahsj 1:8a094db1347f 81 if (lowPowerModeEnabled) {
elijahsj 1:8a094db1347f 82 HAL_PWREx_EnableLowPowerRunMode();
elijahsj 1:8a094db1347f 83 }
elijahsj 1:8a094db1347f 84 if (!pwrClockEnabled) {
elijahsj 1:8a094db1347f 85 __HAL_RCC_PWR_CLK_DISABLE();
elijahsj 1:8a094db1347f 86 }
elijahsj 1:8a094db1347f 87 #else /* TARGET_STM32L4 */
elijahsj 1:8a094db1347f 88 HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
elijahsj 1:8a094db1347f 89 #endif /* TARGET_STM32L4 */
elijahsj 1:8a094db1347f 90
elijahsj 1:8a094db1347f 91 // Restart HAL tick
elijahsj 1:8a094db1347f 92 HAL_ResumeTick();
elijahsj 1:8a094db1347f 93
elijahsj 1:8a094db1347f 94 // Enable IRQs
elijahsj 1:8a094db1347f 95 core_util_critical_section_exit();
elijahsj 1:8a094db1347f 96
elijahsj 1:8a094db1347f 97 // After wake-up from STOP reconfigure the PLL
elijahsj 1:8a094db1347f 98 SetSysClock();
elijahsj 1:8a094db1347f 99
elijahsj 1:8a094db1347f 100 TIM_HandleTypeDef TimMasterHandle;
elijahsj 1:8a094db1347f 101 TimMasterHandle.Instance = TIM_MST;
elijahsj 1:8a094db1347f 102 __HAL_TIM_SET_COUNTER(&TimMasterHandle, EnterTimeUS);
elijahsj 1:8a094db1347f 103
elijahsj 1:8a094db1347f 104 #if DEVICE_LOWPOWERTIMER
elijahsj 1:8a094db1347f 105 rtc_synchronize();
elijahsj 1:8a094db1347f 106 #endif
elijahsj 1:8a094db1347f 107 }
elijahsj 1:8a094db1347f 108
elijahsj 1:8a094db1347f 109 #endif