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main.c
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main.c
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file PWR/PWR_PVD/Src/main.c
* @author MCD Application Team
* @brief This sample code shows how to use STM32G0xx PWR HAL API to manage the
* Programmable Voltage Detector (PVD).
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2018 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
PWR_PVDTypeDef sConfigPVD;
__IO uint32_t uwToggleOn = 1;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
static void PVD_Config(void);
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
/* USER CODE BEGIN 2 */
/* Configure LEDs */
BSP_LED_Init(LED1);
/* Configure the PVD */
PVD_Config();
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
/* LED1 toggles when the voltage is above the target threshold */
if (uwToggleOn)
{
BSP_LED_Toggle(LED1);
HAL_Delay(200);
}
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV4;
RCC_OscInitStruct.PLL.PLLN = 70;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV10;
RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV5;
RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV5;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
/* USER CODE BEGIN 4 */
/**
* @brief Configures the PVD resources.
* @param None
* @retval None
*/
static void PVD_Config(void)
{
/*##-1- Enable Power Clock #################################################*/
/* Enable Power Clock */
__HAL_RCC_PWR_CLK_ENABLE();
/*##-2- Configure the NVIC for PVD #########################################*/
HAL_NVIC_SetPriority(PVD_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(PVD_IRQn);
/* Configure the PVD Level to 3 and generate an interrupt on rising and falling
edges(PVD detection level set to 2.5V, refer to the electrical characteristics
of you device datasheet for more details) */
sConfigPVD.PVDLevel = PWR_PVDLEVEL_3;
sConfigPVD.Mode = PWR_PVD_MODE_IT_RISING_FALLING;
HAL_PWR_ConfigPVD(&sConfigPVD);
/* Enable the PVD Output */
HAL_PWR_EnablePVD();
}
/**
* @brief PWR PVD interrupt rising callback
* @param none
* @retval none
*/
void HAL_PWREx_PVD_Rising_Callback(void)
{
/* Turn Off LED1 as voltage is below threshold */
BSP_LED_Off(LED1);
/* Set uwToggleOn global variable to zero to disable toggle */
uwToggleOn = 0u;
}
/**
* @brief PWR PVD interrupt falling callback
* @param none
* @retval none
*/
void HAL_PWREx_PVD_Falling_Callback(void)
{
/* Turn On LED1 as voltage is above threshold */
BSP_LED_On(LED1);
/* Set uwToggleOn global variable to one to disable toggle */
uwToggleOn = 1u;
}
/* 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 */
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 */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/