Gan likun / mbed1-dev

001

targets/TARGET_STM/sleep.c@0:13413ea9a877, 2022-06-12 (annotated)

Committer:
ganlikun
Date:
Sun Jun 12 14:02:44 2022 +0000
Revision:
0:13413ea9a877
00

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:13413ea9a877 1 /* mbed Microcontroller Library
ganlikun 0:13413ea9a877 2 *******************************************************************************
ganlikun 0:13413ea9a877 3 * Copyright (c) 2016, STMicroelectronics
ganlikun 0:13413ea9a877 4 * All rights reserved.
ganlikun 0:13413ea9a877 5 *
ganlikun 0:13413ea9a877 6 * Redistribution and use in source and binary forms, with or without
ganlikun 0:13413ea9a877 7 * modification, are permitted provided that the following conditions are met:
ganlikun 0:13413ea9a877 8 *
ganlikun 0:13413ea9a877 9 * 1. Redistributions of source code must retain the above copyright notice,
ganlikun 0:13413ea9a877 10 * this list of conditions and the following disclaimer.
ganlikun 0:13413ea9a877 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
ganlikun 0:13413ea9a877 12 * this list of conditions and the following disclaimer in the documentation
ganlikun 0:13413ea9a877 13 * and/or other materials provided with the distribution.
ganlikun 0:13413ea9a877 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
ganlikun 0:13413ea9a877 15 * may be used to endorse or promote products derived from this software
ganlikun 0:13413ea9a877 16 * without specific prior written permission.
ganlikun 0:13413ea9a877 17 *
ganlikun 0:13413ea9a877 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
ganlikun 0:13413ea9a877 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
ganlikun 0:13413ea9a877 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
ganlikun 0:13413ea9a877 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
ganlikun 0:13413ea9a877 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
ganlikun 0:13413ea9a877 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
ganlikun 0:13413ea9a877 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
ganlikun 0:13413ea9a877 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
ganlikun 0:13413ea9a877 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
ganlikun 0:13413ea9a877 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ganlikun 0:13413ea9a877 28 *******************************************************************************
ganlikun 0:13413ea9a877 29 */
ganlikun 0:13413ea9a877 30 #if DEVICE_SLEEP
ganlikun 0:13413ea9a877 31
ganlikun 0:13413ea9a877 32 #include "cmsis.h"
ganlikun 0:13413ea9a877 33 #include "us_ticker_api.h"
ganlikun 0:13413ea9a877 34 #include "sleep_api.h"
ganlikun 0:13413ea9a877 35 #include "rtc_api_hal.h"
ganlikun 0:13413ea9a877 36 #include "hal_tick.h"
ganlikun 0:13413ea9a877 37 #include "mbed_critical.h"
ganlikun 0:13413ea9a877 38
ganlikun 0:13413ea9a877 39 extern void HAL_SuspendTick(void);
ganlikun 0:13413ea9a877 40 extern void HAL_ResumeTick(void);
ganlikun 0:13413ea9a877 41
ganlikun 0:13413ea9a877 42 void hal_sleep(void)
ganlikun 0:13413ea9a877 43 {
ganlikun 0:13413ea9a877 44 // Disable IRQs
ganlikun 0:13413ea9a877 45 core_util_critical_section_enter();
ganlikun 0:13413ea9a877 46
ganlikun 0:13413ea9a877 47 // Stop HAL tick to avoid to exit sleep in 1ms
ganlikun 0:13413ea9a877 48 HAL_SuspendTick();
ganlikun 0:13413ea9a877 49 // Request to enter SLEEP mode
ganlikun 0:13413ea9a877 50 HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
ganlikun 0:13413ea9a877 51 // Restart HAL tick
ganlikun 0:13413ea9a877 52 HAL_ResumeTick();
ganlikun 0:13413ea9a877 53
ganlikun 0:13413ea9a877 54 // Enable IRQs
ganlikun 0:13413ea9a877 55 core_util_critical_section_exit();
ganlikun 0:13413ea9a877 56 }
ganlikun 0:13413ea9a877 57
ganlikun 0:13413ea9a877 58 void hal_deepsleep(void)
ganlikun 0:13413ea9a877 59 {
ganlikun 0:13413ea9a877 60 // Disable IRQs
ganlikun 0:13413ea9a877 61 core_util_critical_section_enter();
ganlikun 0:13413ea9a877 62
ganlikun 0:13413ea9a877 63 // Stop HAL tick
ganlikun 0:13413ea9a877 64 HAL_SuspendTick();
ganlikun 0:13413ea9a877 65 uint32_t EnterTimeUS = us_ticker_read();
ganlikun 0:13413ea9a877 66
ganlikun 0:13413ea9a877 67 // Request to enter STOP mode with regulator in low power mode
ganlikun 0:13413ea9a877 68 #if TARGET_STM32L4
ganlikun 0:13413ea9a877 69 int pwrClockEnabled = __HAL_RCC_PWR_IS_CLK_ENABLED();
ganlikun 0:13413ea9a877 70 int lowPowerModeEnabled = PWR->CR1 & PWR_CR1_LPR;
ganlikun 0:13413ea9a877 71
ganlikun 0:13413ea9a877 72 if (!pwrClockEnabled) {
ganlikun 0:13413ea9a877 73 __HAL_RCC_PWR_CLK_ENABLE();
ganlikun 0:13413ea9a877 74 }
ganlikun 0:13413ea9a877 75 if (lowPowerModeEnabled) {
ganlikun 0:13413ea9a877 76 HAL_PWREx_DisableLowPowerRunMode();
ganlikun 0:13413ea9a877 77 }
ganlikun 0:13413ea9a877 78
ganlikun 0:13413ea9a877 79 HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);
ganlikun 0:13413ea9a877 80
ganlikun 0:13413ea9a877 81 if (lowPowerModeEnabled) {
ganlikun 0:13413ea9a877 82 HAL_PWREx_EnableLowPowerRunMode();
ganlikun 0:13413ea9a877 83 }
ganlikun 0:13413ea9a877 84 if (!pwrClockEnabled) {
ganlikun 0:13413ea9a877 85 __HAL_RCC_PWR_CLK_DISABLE();
ganlikun 0:13413ea9a877 86 }
ganlikun 0:13413ea9a877 87 #else /* TARGET_STM32L4 */
ganlikun 0:13413ea9a877 88 HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
ganlikun 0:13413ea9a877 89 #endif /* TARGET_STM32L4 */
ganlikun 0:13413ea9a877 90
ganlikun 0:13413ea9a877 91 // Restart HAL tick
ganlikun 0:13413ea9a877 92 HAL_ResumeTick();
ganlikun 0:13413ea9a877 93
ganlikun 0:13413ea9a877 94 // Enable IRQs
ganlikun 0:13413ea9a877 95 core_util_critical_section_exit();
ganlikun 0:13413ea9a877 96
ganlikun 0:13413ea9a877 97 // After wake-up from STOP reconfigure the PLL
ganlikun 0:13413ea9a877 98 SetSysClock();
ganlikun 0:13413ea9a877 99
ganlikun 0:13413ea9a877 100 TIM_HandleTypeDef TimMasterHandle;
ganlikun 0:13413ea9a877 101 TimMasterHandle.Instance = TIM_MST;
ganlikun 0:13413ea9a877 102 __HAL_TIM_SET_COUNTER(&TimMasterHandle, EnterTimeUS);
ganlikun 0:13413ea9a877 103
ganlikun 0:13413ea9a877 104 #if DEVICE_LOWPOWERTIMER
ganlikun 0:13413ea9a877 105 rtc_synchronize();
ganlikun 0:13413ea9a877 106 #endif
ganlikun 0:13413ea9a877 107 }
ganlikun 0:13413ea9a877 108
ganlikun 0:13413ea9a877 109 #endif
ganlikun 0:13413ea9a877 110