208 lines
6.7 KiB
C
208 lines
6.7 KiB
C
/**
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******************************************************************************
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* @file PWR/PWR_SLEEP/Src/main.c
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* @author MCD Application Team
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* @brief This sample code shows how to use STM32F1xx PWR HAL API to enter
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* and exit the Sleep mode.
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2016 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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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 STM32F1xx_HAL_Examples
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* @{
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*/
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/** @addtogroup PWR_SLEEP
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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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/* Private function prototypes -----------------------------------------------*/
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void SystemClock_Config(void);
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static void SystemPower_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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/* STM32F1xx 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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HAL_Init();
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/* Configure the system clock to 24 MHz */
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SystemClock_Config();
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/* Configure the system Power */
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SystemPower_Config();
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while (1)
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{
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/* Insert 5 seconds delay */
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HAL_Delay(5000);
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/* User push-button (EXTI_Line0) will be used to wakeup the system from SLEEP mode */
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BSP_PB_Init(BUTTON_USER, BUTTON_MODE_EXTI);
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/*Suspend Tick increment to prevent wakeup by Systick interrupt.
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Otherwise the Systick interrupt will wake up the device within 1ms (HAL time base)*/
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HAL_SuspendTick();
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/* Enable Power Control clock */
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__HAL_RCC_PWR_CLK_ENABLE();
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/* Enter Sleep Mode , wake up is done once User push-button is pressed */
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HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
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/* Resume Tick interrupt if disabled prior to sleep mode entry*/
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HAL_ResumeTick();
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}
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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 (HSE)
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* SYSCLK(Hz) = 24000000
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* HCLK(Hz) = 24000000
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* AHB Prescaler = 1
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* APB1 Prescaler = 1
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* APB2 Prescaler = 1
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* HSE Frequency(Hz) = 8000000
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* HSE PREDIV1 = 2
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* PLLMUL = 6
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* Flash Latency(WS) = 0
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* @param None
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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_ClkInitTypeDef clkinitstruct = {0};
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RCC_OscInitTypeDef oscinitstruct = {0};
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/* Enable HSE Oscillator and activate PLL with HSE as source */
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oscinitstruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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oscinitstruct.HSEState = RCC_HSE_ON;
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oscinitstruct.HSEPredivValue = RCC_HSE_PREDIV_DIV2;
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oscinitstruct.PLL.PLLState = RCC_PLL_ON;
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oscinitstruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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oscinitstruct.PLL.PLLMUL = RCC_PLL_MUL6;
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if (HAL_RCC_OscConfig(&oscinitstruct)!= HAL_OK)
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{
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/* Initialization Error */
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while(1);
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}
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/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
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clocks dividers */
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clkinitstruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
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clkinitstruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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clkinitstruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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clkinitstruct.APB2CLKDivider = RCC_HCLK_DIV1;
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clkinitstruct.APB1CLKDivider = RCC_HCLK_DIV1;
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if (HAL_RCC_ClockConfig(&clkinitstruct, FLASH_LATENCY_0)!= HAL_OK)
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{
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/* Initialization Error */
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while(1);
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}
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}
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/**
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* @brief System Power Configuration
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* @retval None
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*/
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static void SystemPower_Config(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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/* Enable GPIOs clock */
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__HAL_RCC_GPIOA_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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__HAL_RCC_GPIOC_CLK_ENABLE();
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__HAL_RCC_GPIOD_CLK_ENABLE();
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__HAL_RCC_GPIOE_CLK_ENABLE();
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/* Configure all GPIO port pins in Analog Input mode (floating input trigger OFF) */
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/* Note: Debug using ST-Link is not possible during the execution of this */
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/* example because communication between ST-link and the device */
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/* under test is done through UART. All GPIO pins are disabled (set */
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/* to analog input mode) including UART I/O pins. */
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GPIO_InitStructure.Pin = GPIO_PIN_All;
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GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
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HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
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HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
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HAL_GPIO_Init(GPIOD, &GPIO_InitStructure);
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HAL_GPIO_Init(GPIOE, &GPIO_InitStructure);
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/* Disable GPIOs clock */
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__HAL_RCC_GPIOA_CLK_DISABLE();
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__HAL_RCC_GPIOB_CLK_DISABLE();
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__HAL_RCC_GPIOC_CLK_DISABLE();
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__HAL_RCC_GPIOD_CLK_DISABLE();
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__HAL_RCC_GPIOE_CLK_DISABLE();
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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 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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}
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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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