201 lines
6.6 KiB
C
201 lines
6.6 KiB
C
/**
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******************************************************************************
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* @file GPIO/GPIO_IOToggle/Src/main.c
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* @author MCD Application Team
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* @brief This example describes how to configure and use GPIOs through
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* the STM32F1xx HAL API.
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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 GPIO_IOToggle
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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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static GPIO_InitTypeDef GPIO_InitStruct;
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/* Private function prototypes -----------------------------------------------*/
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void SystemClock_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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/* This sample code shows how to use GPIO HAL API to toggle LED1, LED2, LED3 and LED4 IOs
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in an infinite loop. */
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/* STM32F107xC 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 72 MHz */
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SystemClock_Config();
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/* -1- Enable GPIO Clock (to be able to program the configuration registers) */
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LED1_GPIO_CLK_ENABLE();
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LED2_GPIO_CLK_ENABLE();
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LED3_GPIO_CLK_ENABLE();
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LED4_GPIO_CLK_ENABLE();
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/* -2- Configure IO in output push-pull mode to drive external LEDs */
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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GPIO_InitStruct.Pin = LED1_PIN;
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HAL_GPIO_Init(LED1_GPIO_PORT, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = LED2_PIN;
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HAL_GPIO_Init(LED2_GPIO_PORT, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = LED3_PIN;
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HAL_GPIO_Init(LED3_GPIO_PORT, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = LED4_PIN;
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HAL_GPIO_Init(LED4_GPIO_PORT, &GPIO_InitStruct);
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/* -3- Toggle IO in an infinite loop */
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while (1)
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{
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HAL_GPIO_TogglePin(LED1_GPIO_PORT, LED1_PIN);
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/* Insert delay 100 ms */
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HAL_Delay(100);
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HAL_GPIO_TogglePin(LED2_GPIO_PORT, LED2_PIN);
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/* Insert delay 100 ms */
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HAL_Delay(100);
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HAL_GPIO_TogglePin(LED3_GPIO_PORT, LED3_PIN);
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/* Insert delay 100 ms */
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HAL_Delay(100);
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HAL_GPIO_TogglePin(LED4_GPIO_PORT, LED4_PIN);
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/* Insert delay 100 ms */
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HAL_Delay(100);
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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) = 72000000
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* HCLK(Hz) = 72000000
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* AHB Prescaler = 1
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* APB1 Prescaler = 2
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* APB2 Prescaler = 1
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* HSE Frequency(Hz) = 25000000
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* HSE PREDIV1 = 5
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* HSE PREDIV2 = 5
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* PLL2MUL = 8
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* Flash Latency(WS) = 2
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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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/* Configure PLLs ------------------------------------------------------*/
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/* PLL2 configuration: PLL2CLK = (HSE / HSEPrediv2Value) * PLL2MUL = (25 / 5) * 8 = 40 MHz */
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/* PREDIV1 configuration: PREDIV1CLK = PLL2CLK / HSEPredivValue = 40 / 5 = 8 MHz */
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/* PLL configuration: PLLCLK = PREDIV1CLK * PLLMUL = 8 * 9 = 72 MHz */
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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_DIV5;
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oscinitstruct.Prediv1Source = RCC_PREDIV1_SOURCE_PLL2;
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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_MUL9;
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oscinitstruct.PLL2.PLL2State = RCC_PLL2_ON;
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oscinitstruct.PLL2.PLL2MUL = RCC_PLL2_MUL8;
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oscinitstruct.PLL2.HSEPrediv2Value = RCC_HSE_PREDIV2_DIV5;
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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_DIV2;
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if (HAL_RCC_ClockConfig(&clkinitstruct, FLASH_LATENCY_2)!= 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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#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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