Andrew SaLoutos / mbed-dev-STM-lean

From Ben Katz mbed-dev library. Removed unnecessary target files to reduce the overall size by a factor of 10 to make it easier to import into the online IDE.

Dependents:   motor_driver motor_driver_screaming_fix

targets/TARGET_STM/sleep.c@0:083111ae2a11, 2020-11-26 (annotated)

Committer:
saloutos
Date:
Thu Nov 26 04:08:56 2020 +0000
Revision:
0:083111ae2a11
first commit of leaned mbed dev lib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
saloutos 0:083111ae2a11 1 /* mbed Microcontroller Library
saloutos 0:083111ae2a11 2 *******************************************************************************
saloutos 0:083111ae2a11 3 * Copyright (c) 2016, STMicroelectronics
saloutos 0:083111ae2a11 4 * All rights reserved.
saloutos 0:083111ae2a11 5 *
saloutos 0:083111ae2a11 6 * Redistribution and use in source and binary forms, with or without
saloutos 0:083111ae2a11 7 * modification, are permitted provided that the following conditions are met:
saloutos 0:083111ae2a11 8 *
saloutos 0:083111ae2a11 9 * 1. Redistributions of source code must retain the above copyright notice,
saloutos 0:083111ae2a11 10 * this list of conditions and the following disclaimer.
saloutos 0:083111ae2a11 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
saloutos 0:083111ae2a11 12 * this list of conditions and the following disclaimer in the documentation
saloutos 0:083111ae2a11 13 * and/or other materials provided with the distribution.
saloutos 0:083111ae2a11 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
saloutos 0:083111ae2a11 15 * may be used to endorse or promote products derived from this software
saloutos 0:083111ae2a11 16 * without specific prior written permission.
saloutos 0:083111ae2a11 17 *
saloutos 0:083111ae2a11 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
saloutos 0:083111ae2a11 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
saloutos 0:083111ae2a11 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
saloutos 0:083111ae2a11 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
saloutos 0:083111ae2a11 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
saloutos 0:083111ae2a11 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
saloutos 0:083111ae2a11 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
saloutos 0:083111ae2a11 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
saloutos 0:083111ae2a11 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
saloutos 0:083111ae2a11 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
saloutos 0:083111ae2a11 28 *******************************************************************************
saloutos 0:083111ae2a11 29 */
saloutos 0:083111ae2a11 30 #if DEVICE_SLEEP
saloutos 0:083111ae2a11 31
saloutos 0:083111ae2a11 32 #include "cmsis.h"
saloutos 0:083111ae2a11 33 #include "us_ticker_api.h"
saloutos 0:083111ae2a11 34 #include "sleep_api.h"
saloutos 0:083111ae2a11 35 #include "rtc_api_hal.h"
saloutos 0:083111ae2a11 36 #include "hal_tick.h"
saloutos 0:083111ae2a11 37 #include "mbed_critical.h"
saloutos 0:083111ae2a11 38
saloutos 0:083111ae2a11 39 extern void HAL_SuspendTick(void);
saloutos 0:083111ae2a11 40 extern void HAL_ResumeTick(void);
saloutos 0:083111ae2a11 41
saloutos 0:083111ae2a11 42 void hal_sleep(void)
saloutos 0:083111ae2a11 43 {
saloutos 0:083111ae2a11 44 // Disable IRQs
saloutos 0:083111ae2a11 45 core_util_critical_section_enter();
saloutos 0:083111ae2a11 46
saloutos 0:083111ae2a11 47 // Stop HAL tick to avoid to exit sleep in 1ms
saloutos 0:083111ae2a11 48 HAL_SuspendTick();
saloutos 0:083111ae2a11 49 // Request to enter SLEEP mode
saloutos 0:083111ae2a11 50 HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
saloutos 0:083111ae2a11 51 // Restart HAL tick
saloutos 0:083111ae2a11 52 HAL_ResumeTick();
saloutos 0:083111ae2a11 53
saloutos 0:083111ae2a11 54 // Enable IRQs
saloutos 0:083111ae2a11 55 core_util_critical_section_exit();
saloutos 0:083111ae2a11 56 }
saloutos 0:083111ae2a11 57
saloutos 0:083111ae2a11 58 void hal_deepsleep(void)
saloutos 0:083111ae2a11 59 {
saloutos 0:083111ae2a11 60 // Disable IRQs
saloutos 0:083111ae2a11 61 core_util_critical_section_enter();
saloutos 0:083111ae2a11 62
saloutos 0:083111ae2a11 63 // Stop HAL tick
saloutos 0:083111ae2a11 64 HAL_SuspendTick();
saloutos 0:083111ae2a11 65 uint32_t EnterTimeUS = us_ticker_read();
saloutos 0:083111ae2a11 66
saloutos 0:083111ae2a11 67 // Request to enter STOP mode with regulator in low power mode
saloutos 0:083111ae2a11 68 #if TARGET_STM32L4
saloutos 0:083111ae2a11 69 int pwrClockEnabled = __HAL_RCC_PWR_IS_CLK_ENABLED();
saloutos 0:083111ae2a11 70 int lowPowerModeEnabled = PWR->CR1 & PWR_CR1_LPR;
saloutos 0:083111ae2a11 71
saloutos 0:083111ae2a11 72 if (!pwrClockEnabled) {
saloutos 0:083111ae2a11 73 __HAL_RCC_PWR_CLK_ENABLE();
saloutos 0:083111ae2a11 74 }
saloutos 0:083111ae2a11 75 if (lowPowerModeEnabled) {
saloutos 0:083111ae2a11 76 HAL_PWREx_DisableLowPowerRunMode();
saloutos 0:083111ae2a11 77 }
saloutos 0:083111ae2a11 78
saloutos 0:083111ae2a11 79 HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);
saloutos 0:083111ae2a11 80
saloutos 0:083111ae2a11 81 if (lowPowerModeEnabled) {
saloutos 0:083111ae2a11 82 HAL_PWREx_EnableLowPowerRunMode();
saloutos 0:083111ae2a11 83 }
saloutos 0:083111ae2a11 84 if (!pwrClockEnabled) {
saloutos 0:083111ae2a11 85 __HAL_RCC_PWR_CLK_DISABLE();
saloutos 0:083111ae2a11 86 }
saloutos 0:083111ae2a11 87 #else /* TARGET_STM32L4 */
saloutos 0:083111ae2a11 88 HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
saloutos 0:083111ae2a11 89 #endif /* TARGET_STM32L4 */
saloutos 0:083111ae2a11 90
saloutos 0:083111ae2a11 91 // Restart HAL tick
saloutos 0:083111ae2a11 92 HAL_ResumeTick();
saloutos 0:083111ae2a11 93
saloutos 0:083111ae2a11 94 // Enable IRQs
saloutos 0:083111ae2a11 95 core_util_critical_section_exit();
saloutos 0:083111ae2a11 96
saloutos 0:083111ae2a11 97 // After wake-up from STOP reconfigure the PLL
saloutos 0:083111ae2a11 98 SetSysClock();
saloutos 0:083111ae2a11 99
saloutos 0:083111ae2a11 100 TIM_HandleTypeDef TimMasterHandle;
saloutos 0:083111ae2a11 101 TimMasterHandle.Instance = TIM_MST;
saloutos 0:083111ae2a11 102 __HAL_TIM_SET_COUNTER(&TimMasterHandle, EnterTimeUS);
saloutos 0:083111ae2a11 103
saloutos 0:083111ae2a11 104 #if DEVICE_LOWPOWERTIMER
saloutos 0:083111ae2a11 105 rtc_synchronize();
saloutos 0:083111ae2a11 106 #endif
saloutos 0:083111ae2a11 107 }
saloutos 0:083111ae2a11 108
saloutos 0:083111ae2a11 109 #endif