/** ****************************************************************************** * @file GPIO/GPIO_IOToggle/Src/main.c * @author MCD Application Team * @brief This example describes how to configure and use GPIOs through * the STM32F1xx HAL API. ****************************************************************************** * @attention * *

© Copyright (c) 2016 STMicroelectronics. * All rights reserved.

* * 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 * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "main.h" /** @addtogroup STM32F1xx_HAL_Examples * @{ */ /** @addtogroup GPIO_IOToggle * @{ */ /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ static GPIO_InitTypeDef GPIO_InitStruct; /* Private function prototypes -----------------------------------------------*/ void SystemClock_Config(void); /* Private functions ---------------------------------------------------------*/ /** * @brief Main program * @param None * @retval None */ int main(void) { /* This sample code shows how to use GPIO HAL API to toggle LED1, LED2, LED3 and LED4 IOs in an infinite loop. */ /* STM32F107xC HAL library initialization: - Configure the Flash prefetch - Systick timer is configured by default as source of time base, but user can eventually implement his proper time base source (a general purpose timer for example or other time source), keeping in mind that Time base duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and handled in milliseconds basis. - Set NVIC Group Priority to 4 - Low Level Initialization */ HAL_Init(); /* Configure the system clock to 72 MHz */ SystemClock_Config(); /* -1- Enable GPIO Clock (to be able to program the configuration registers) */ LED1_GPIO_CLK_ENABLE(); LED2_GPIO_CLK_ENABLE(); LED3_GPIO_CLK_ENABLE(); LED4_GPIO_CLK_ENABLE(); /* -2- Configure IO in output push-pull mode to drive external LEDs */ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_PULLUP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; GPIO_InitStruct.Pin = LED1_PIN; HAL_GPIO_Init(LED1_GPIO_PORT, &GPIO_InitStruct); GPIO_InitStruct.Pin = LED2_PIN; HAL_GPIO_Init(LED2_GPIO_PORT, &GPIO_InitStruct); GPIO_InitStruct.Pin = LED3_PIN; HAL_GPIO_Init(LED3_GPIO_PORT, &GPIO_InitStruct); GPIO_InitStruct.Pin = LED4_PIN; HAL_GPIO_Init(LED4_GPIO_PORT, &GPIO_InitStruct); /* -3- Toggle IO in an infinite loop */ while (1) { HAL_GPIO_TogglePin(LED1_GPIO_PORT, LED1_PIN); /* Insert delay 100 ms */ HAL_Delay(100); HAL_GPIO_TogglePin(LED2_GPIO_PORT, LED2_PIN); /* Insert delay 100 ms */ HAL_Delay(100); HAL_GPIO_TogglePin(LED3_GPIO_PORT, LED3_PIN); /* Insert delay 100 ms */ HAL_Delay(100); HAL_GPIO_TogglePin(LED4_GPIO_PORT, LED4_PIN); /* Insert delay 100 ms */ HAL_Delay(100); } } /** * @brief System Clock Configuration * The system Clock is configured as follow : * System Clock source = PLL (HSE) * SYSCLK(Hz) = 72000000 * HCLK(Hz) = 72000000 * AHB Prescaler = 1 * APB1 Prescaler = 2 * APB2 Prescaler = 1 * HSE Frequency(Hz) = 25000000 * HSE PREDIV1 = 5 * HSE PREDIV2 = 5 * PLL2MUL = 8 * Flash Latency(WS) = 2 * @param None * @retval None */ void SystemClock_Config(void) { RCC_ClkInitTypeDef clkinitstruct = {0}; RCC_OscInitTypeDef oscinitstruct = {0}; /* Configure PLLs ------------------------------------------------------*/ /* PLL2 configuration: PLL2CLK = (HSE / HSEPrediv2Value) * PLL2MUL = (25 / 5) * 8 = 40 MHz */ /* PREDIV1 configuration: PREDIV1CLK = PLL2CLK / HSEPredivValue = 40 / 5 = 8 MHz */ /* PLL configuration: PLLCLK = PREDIV1CLK * PLLMUL = 8 * 9 = 72 MHz */ /* Enable HSE Oscillator and activate PLL with HSE as source */ oscinitstruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; oscinitstruct.HSEState = RCC_HSE_ON; oscinitstruct.HSEPredivValue = RCC_HSE_PREDIV_DIV5; oscinitstruct.Prediv1Source = RCC_PREDIV1_SOURCE_PLL2; oscinitstruct.PLL.PLLState = RCC_PLL_ON; oscinitstruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; oscinitstruct.PLL.PLLMUL = RCC_PLL_MUL9; oscinitstruct.PLL2.PLL2State = RCC_PLL2_ON; oscinitstruct.PLL2.PLL2MUL = RCC_PLL2_MUL8; oscinitstruct.PLL2.HSEPrediv2Value = RCC_HSE_PREDIV2_DIV5; if (HAL_RCC_OscConfig(&oscinitstruct)!= HAL_OK) { /* Initialization Error */ while(1); } /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */ clkinitstruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2); clkinitstruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; clkinitstruct.AHBCLKDivider = RCC_SYSCLK_DIV1; clkinitstruct.APB2CLKDivider = RCC_HCLK_DIV1; clkinitstruct.APB1CLKDivider = RCC_HCLK_DIV2; if (HAL_RCC_ClockConfig(&clkinitstruct, FLASH_LATENCY_2)!= HAL_OK) { /* Initialization Error */ while(1); } } #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 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) { } } #endif /** * @} */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/