265 lines
7.4 KiB
C
265 lines
7.4 KiB
C
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file PWR/PWR_STANDBY/Src/main.c
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* @author MCD Application Team
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* @brief This sample code shows how to use STM32WLxx PWR HAL API to enter
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* and exit the standby mode with a wakeup pin or external reset.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2020 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/* Private includes ----------------------------------------------------------*/
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/* USER CODE BEGIN Includes */
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/* USER CODE END Includes */
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/* Private typedef -----------------------------------------------------------*/
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/* USER CODE BEGIN PTD */
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/* USER CODE END PTD */
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/* Private define ------------------------------------------------------------*/
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/* USER CODE BEGIN PD */
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#define LED_TOGGLE_DELAY 100UL
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/* USER CODE END PD */
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/* Private macro -------------------------------------------------------------*/
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/* USER CODE BEGIN PM */
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/* USER CODE END PM */
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/* Private variables ---------------------------------------------------------*/
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/* USER CODE BEGIN PV */
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static uint32_t TimingDelay = LED_TOGGLE_DELAY;
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/* USER CODE END PV */
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/* Private function prototypes -----------------------------------------------*/
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void SystemClock_Config(void);
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/* USER CODE BEGIN PFP */
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static void WkupPin1_Config(void);
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/* USER CODE END PFP */
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/* Private user code ---------------------------------------------------------*/
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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/**
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* @brief The application entry point.
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* @retval int
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*/
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int main(void)
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{
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/* USER CODE BEGIN 1 */
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/* STM32WLxx HAL library initialization:
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- Configure the Flash prefetch
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- Systick timer is configured by default as source of time base, but user
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can eventually implement his proper time base source (a general purpose
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timer for example or other time source), keeping in mind that Time base
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duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
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handled in milliseconds basis.
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- Set NVIC Group Priority to 4
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- Low Level Initialization
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*/
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/* USER CODE END 1 */
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/* MCU Configuration--------------------------------------------------------*/
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/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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HAL_Init();
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/* USER CODE BEGIN Init */
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/* Configure LED2 */
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BSP_LED_Init(LED2);
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/* Configure LED3 for error handler */
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BSP_LED_Init(LED3);
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/* USER CODE END Init */
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/* Configure the system clock */
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SystemClock_Config();
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/* USER CODE BEGIN SysInit */
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/* Configure the wake_up pin */
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WkupPin1_Config();
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/* Uncomment to be able to debug after wake-up from Standby. Consuption will be increased */
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//HAL_DBGMCU_EnableDBGStandbyMode();
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/* USER CODE END SysInit */
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/* Initialize all configured peripherals */
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/* USER CODE BEGIN 2 */
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/* Check if the system was resumed from Standby mode */
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if (__HAL_PWR_GET_FLAG(PWR_FLAG_SB) != RESET)
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{
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/* Clear Standby flag */
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__HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);
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}
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/* Insert 5 seconds delay */
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HAL_Delay(5000);
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/* The Following Wakeup sequence is highly recommended prior to Standby mode entry
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- Enable wakeup
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- Clear wake up pin flag depending in edge detection & pin level.
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- Enter the Standby mode.
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*/
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/* Enable WakeUp Pin PWR_WAKEUP_PIN1 connected to PA0 */
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HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1_LOW);
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/* Clear all related wakeup flags*/
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__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WUF1);
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/* Enter the Standby mode */
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HAL_PWR_EnterSTANDBYMode();
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/* This code will never be reached! */
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/* USER CODE END 2 */
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/* Infinite loop */
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/* USER CODE BEGIN WHILE */
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while (1)
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{
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/* USER CODE END WHILE */
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/* USER CODE BEGIN 3 */
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}
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/* USER CODE END 3 */
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}
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/**
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* @brief System Clock Configuration
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* @retval None
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*/
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void SystemClock_Config(void)
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{
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RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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/** Configure the main internal regulator output voltage
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*/
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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/** Initializes the CPU, AHB and APB buses clocks
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*/
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
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RCC_OscInitStruct.MSIState = RCC_MSI_ON;
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RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;
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RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_8;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;
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RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV4;
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RCC_OscInitStruct.PLL.PLLN = 24;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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Error_Handler();
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}
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/** Configure the SYSCLKSource, HCLK, PCLK1 and PCLK2 clocks dividers
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*/
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK3|RCC_CLOCKTYPE_HCLK
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|RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1
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|RCC_CLOCKTYPE_PCLK2;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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RCC_ClkInitStruct.AHBCLK3Divider = RCC_SYSCLK_DIV1;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
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{
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Error_Handler();
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}
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}
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/* USER CODE BEGIN 4 */
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static void WkupPin1_Config(void)
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{
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/* Configure Button pin and unmask Wakeup with Interrupt request from line 0.*/
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BSP_PB_Init(BUTTON_SW1, BUTTON_MODE_EXTI);
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/* Enable wake-up pin pull-up state in Standby mode.*/
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HAL_PWREx_EnableGPIOPullUp(PWR_GPIO_A, PWR_GPIO_BIT_0);
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HAL_PWREx_EnablePullUpPullDownConfig();
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}
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/**
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* @brief SYSTICK callback
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* @param None
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* @retval None
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*/
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void HAL_SYSTICK_Callback(void)
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{
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if (TimingDelay != 0)
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{
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TimingDelay--;
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}
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else
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{
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/* Toggle LED2 */
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BSP_LED_Toggle(LED2);
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TimingDelay = LED_TOGGLE_DELAY;
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}
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}
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/* USER CODE END 4 */
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/**
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* @brief This function is executed in case of error occurrence.
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* @retval None
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*/
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void Error_Handler(void)
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{
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/* USER CODE BEGIN Error_Handler_Debug */
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/* User can add his own implementation to report the HAL error return state */
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/* Turn LED3 on */
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BSP_LED_On(LED3);
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while (1)
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{
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}
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/* USER CODE END Error_Handler_Debug */
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* USER CODE BEGIN 6 */
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{
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}
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/* USER CODE END 6 */
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}
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#endif /* USE_FULL_ASSERT */
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