mirror of
https://github.com/STMicroelectronics/STM32CubeF0.git
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242 lines
7.5 KiB
C
242 lines
7.5 KiB
C
/**
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******************************************************************************
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* @file PWR/PWR_PVD/Src/main.c
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* @author MCD Application Team
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* @brief This sample code shows how to use STM32F0xx PWR HAL API to manage the
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* Programmable Voltage Detector (PVD).
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/** @addtogroup STM32F0xx_HAL_Examples
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* @{
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*/
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/** @addtogroup PWR_PVD
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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PWR_PVDTypeDef sConfigPVD;
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__IO uint32_t uwToggleOn = 1;
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/* Private function prototypes -----------------------------------------------*/
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static void SystemClock_Config(void);
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static void Error_Handler(void);
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static void PVD_Config(void);
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief Main program
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* @param None
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* @retval None
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*/
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int main(void)
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{
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/* STM32F0xx 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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- Low Level Initialization
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*/
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HAL_Init();
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/* Configure LED */
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BSP_LED_Init(LED2);
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/* Configure the system clock to 48 MHz */
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SystemClock_Config();
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/* Configure the PVD */
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PVD_Config();
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/* Infinite loop */
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while (1)
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{
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/* LED2 toggles when the voltage is above the target threshold */
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if (uwToggleOn)
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{
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BSP_LED_Toggle(LED2);
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HAL_Delay(200);
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}
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}
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}
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/**
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* @brief Configures the PVD resources.
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* @param None
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* @retval None
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*/
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static void PVD_Config(void)
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{
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/*##-1- Enable Power Clock #################################################*/
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__HAL_RCC_PWR_CLK_ENABLE();
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/*##-2- Configure the NVIC for PVD #########################################*/
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HAL_NVIC_SetPriority(PVD_VDDIO2_IRQn, 0, 0);
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HAL_NVIC_EnableIRQ(PVD_VDDIO2_IRQn);
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/* Configure the PVD Level to 3 and generate an interrupt on rising and falling
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edges(PVD detection level set to 2.5V, refer to the electrical characteristics
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of you device datasheet for more details) */
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sConfigPVD.PVDLevel = PWR_PVDLEVEL_3;
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sConfigPVD.Mode = PWR_PVD_MODE_IT_RISING_FALLING;
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HAL_PWR_ConfigPVD(&sConfigPVD);
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/* Enable the PVD Output */
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HAL_PWR_EnablePVD();
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}
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/**
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* @brief System Clock Configuration
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* The system Clock is configured as follow :
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* System Clock source = PLL (HSI48)
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* SYSCLK(Hz) = 48000000
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* HCLK(Hz) = 48000000
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* AHB Prescaler = 1
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* APB1 Prescaler = 1
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* HSI Frequency(Hz) = 48000000
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* PREDIV = 2
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* PLLMUL = 2
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* Flash Latency(WS) = 1
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* @param None
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* @retval None
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*/
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static void SystemClock_Config(void)
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{
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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RCC_OscInitTypeDef RCC_OscInitStruct;
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/* Select HSI48 Oscillator as PLL source */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48;
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RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI48;
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RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV2;
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RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL2;
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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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/* Select PLL as system clock source and configure the HCLK and PCLK1 clocks dividers */
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1);
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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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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1)!= HAL_OK)
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{
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Error_Handler();
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}
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}
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/**
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* @brief This function is executed in case of error occurrence.
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* @param None
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* @retval None
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*/
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static void Error_Handler(void)
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{
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/* Error if LED2 is slowling blinking (1 sec. period) */
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BSP_LED_On(LED2);
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while (1)
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{
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BSP_LED_Toggle(LED2);
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HAL_Delay(1000);
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}
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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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HAL_IncTick();
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}
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/**
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* @brief PWR PVD interrupt callback
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* @param none
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* @retval none
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*/
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void HAL_PWR_PVDCallback(void)
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{
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/* Set LED2 on */
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BSP_LED_On(LED2);
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/* update uwToggleOn global variable so that LED2 blinks when the
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voltage is above the target threshold */
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uwToggleOn = (uwToggleOn+1) % 2;
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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(char *file, uint32_t line)
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{
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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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Error_Handler();
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/* Infinite loop */
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while (1)
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{
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}
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}
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#endif
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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