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jrepp/main.c

Created December 13, 2023 01:10
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STM32 PWR_STANDBY modifications to main.c
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main.c
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file PWR/PWR_STANDBY/Src/main.c
* @author MCD Application Team
* @brief This sample code shows how to use STM32WLxx PWR HAL API to enter
* and exit the standby mode with a wakeup pin or external reset.
******************************************************************************
* @attention
*
* Copyright (c) 2020 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdbool.h>
#include <stdint.h>
#include <memory.h>
#include "stm32wlxx_hal_rtc.h"
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
#define LED_TOGGLE_DELAY 100UL
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
static uint32_t TimingDelay = LED_TOGGLE_DELAY;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
static void WkupPin1_Config(void);
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
typedef struct {
bool wake_from_sb;
bool wake_from_stop2;
bool wake_from_rtc;
bool wake_from_button;
bool wake_from_hall_effect;
bool wake_from_pvd;
bool wake_from_internal;
bool wake_from_rf_busy;
} startup_info_t;
static void
capture_startup_info(startup_info_t *startup_info) {
assert_param(startup_info != NULL);
memset(startup_info, 0, sizeof(startup_info_t));
// Do queries to understand the system startup/wakeup
if (__HAL_PWR_GET_FLAG(PWR_FLAG_SB) != RESET) {
startup_info->wake_from_sb = true;
}
if (__HAL_PWR_GET_FLAG(PWR_FLAG_STOP2)) {
startup_info->wake_from_stop2 = true;
}
// Clear core 1 stop and standby flags
LL_PWR_ClearFlag_C1STOP_C1STB();
// Example: Check if the wake-up was caused by the RTC alarm
startup_info->wake_from_rtc = __HAL_RTC_ALARM_GET_FLAG(&hrtc, RTC_FLAG_ALRAF) != RESET
|| __HAL_RTC_GET_FLAG(&hrtc, RTC_FLAG_WUTF) != RESET;
startup_info->wake_from_button = __HAL_PWR_GET_FLAG(PWR_FLAG_WUF1) != RESET;
startup_info->wake_from_hall_effect = __HAL_PWR_GET_FLAG(PWR_FLAG_WUF3) != RESET;
startup_info->wake_from_pvd = __HAL_PWR_GET_FLAG(PWR_FLAG_WPVD) != RESET;
startup_info->wake_from_internal = __HAL_PWR_GET_FLAG(PWR_FLAG_WUFI) != RESET;
startup_info->wake_from_rf_busy = __HAL_PWR_GET_FLAG(PWR_FLAG_WRFBUSY) != RESET;
// Clear the wake-up flags
LL_PWR_ClearFlag_WU();
// Clear the RTC wakeup timer flag
__HAL_RTC_CLEAR_FLAG(&hrtc, RTC_CLEAR_WUTF);
}
void irq_disable_all() {
// disable all interrupts
for (uint32_t irq = WWDG_IRQn; irq <= DMAMUX1_OVR_IRQn; ++irq) {
HAL_NVIC_DisableIRQ((IRQn_Type)irq);
HAL_NVIC_ClearPendingIRQ((IRQn_Type)irq);
}
}
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* STM32WLxx HAL library initialization:
- Configure the Flash prefetch
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Set NVIC Group Priority to 4
- Low Level Initialization
*/
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* Configure LED2 */
BSP_LED_Init(LED2);
/* Configure LED3 for error handler */
BSP_LED_Init(LED3);
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* Configure the wake_up pin */
WkupPin1_Config();
startup_info_t startup_info;
capture_startup_info(&startup_info);
/* Uncomment to be able to debug after wake-up from Standby. Consuption will be increased */
//HAL_DBGMCU_EnableDBGStandbyMode();
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
/* USER CODE BEGIN 2 */
BSP_LED_Off(LED1);
BSP_LED_Off(LED2);
/* Insert 5 seconds delay */
for (uint32_t i = 0; i < 5; ++i) {
BSP_LED_Toggle(LED2);
HAL_Delay(1000);
}
/* The Following Wakeup sequence is highly recommended prior to Standby mode entry
- Enable wakeup
- Clear wake up pin flag depending in edge detection & pin level.
- Enter the Standby mode.
*/
/* Enable WakeUp Pin PWR_WAKEUP_PIN1 connected to PA0 */
HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1_LOW);
/* Clear all related wakeup flags*/
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
irq_disable_all();
/* Disable EXTI 44 : Radio IRQ ITs for CPU1 */
LL_EXTI_DisableIT_32_63(LL_EXTI_LINE_44);
/* Disable wakeup signal of the Radio peripheral */
LL_PWR_SetRadioBusyTrigger(LL_PWR_RADIO_BUSY_TRIGGER_NONE);
HAL_DisableDBGStandbyMode();
/* Enter the Standby mode */
HAL_PWR_EnterSTANDBYMode();
/* This code will never be reached! */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Configure the main internal regulator output voltage
*/
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
RCC_OscInitStruct.MSIState = RCC_MSI_ON;
RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;
RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_8;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;
RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV4;
RCC_OscInitStruct.PLL.PLLN = 24;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Configure the SYSCLKSource, HCLK, PCLK1 and PCLK2 clocks dividers
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK3|RCC_CLOCKTYPE_HCLK
|RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1
|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.AHBCLK3Divider = RCC_SYSCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
/* USER CODE BEGIN 4 */
static void WkupPin1_Config(void)
{
/* Configure Button pin and unmask Wakeup with Interrupt request from line 0.*/
BSP_PB_Init(BUTTON_SW1, BUTTON_MODE_EXTI);
/* Enable wake-up pin pull-up state in Standby mode.*/
HAL_PWREx_EnableGPIOPullUp(PWR_GPIO_A, PWR_GPIO_BIT_0);
HAL_PWREx_EnablePullUpPullDownConfig();
}
/**
* @brief SYSTICK callback
* @param None
* @retval None
*/
void HAL_SYSTICK_Callback(void)
{
if (TimingDelay != 0)
{
TimingDelay--;
}
else
{
/* Toggle LED2 */
BSP_LED_Toggle(LED2);
TimingDelay = LED_TOGGLE_DELAY;
}
}
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
/* Turn LED3 on */
BSP_LED_On(LED3);
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
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