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- /**
- ******************************************************************************
- * @file GPIO/GPIO_EXTI/Src/main.c
- * @author MCD Application Team
- * @version V1.0.1
- * @date 23-September-2016
- * @brief This example describes how to configure and use GPIOs through
- * the STM32F7xx HAL API.
- ******************************************************************************
- * @attention
- *
- * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * 3. Neither the name of STMicroelectronics nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- ******************************************************************************
- */
- /* Includes ------------------------------------------------------------------*/
- #include "main.h"
- /** @addtogroup STM32F7xx_HAL_Examples
- * @{
- */
- /** @addtogroup GPIO_EXTI
- * @{
- */
- /* Private typedef -----------------------------------------------------------*/
- /* Private define ------------------------------------------------------------*/
- /* Private macro -------------------------------------------------------------*/
- /* Private variables ---------------------------------------------------------*/
- /* Private function prototypes -----------------------------------------------*/
- static void SystemClock_Config(void);
- static void EXTI15_10_IRQHandler_Config(void);
- /* Private functions ---------------------------------------------------------*/
- /**
- * @brief Main program
- * @param None
- * @retval None
- */
- int main(void)
- {
- /* STM32F7xx 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 216 MHz */
- SystemClock_Config();
- /* -1- Initialize LEDs mounted on STM32F767ZI-Nucleo_144 board */
- BSP_LED_Init(LED1);
- /* -2- Configure EXTI_Line15_10 (connected to PC.13 pin) in interrupt mode */
- EXTI15_10_IRQHandler_Config();
- /* Infinite loop */
- int num = 0;
- while (1)
- {
- num ++;
- }
- }
- /**
- * @brief System Clock Configuration
- * The system Clock is configured as follow :
- * System Clock source = PLL (HSE)
- * SYSCLK(Hz) = 216000000
- * HCLK(Hz) = 216000000
- * AHB Prescaler = 1
- * APB1 Prescaler = 4
- * APB2 Prescaler = 2
- * HSE Frequency(Hz) = 8000000
- * PLL_M = 8
- * PLL_N = 432
- * PLL_P = 2
- * PLL_Q = 9
- * PLL_R = 7
- * VDD(V) = 3.3
- * Main regulator output voltage = Scale1 mode
- * Flash Latency(WS) = 7
- * @param None
- * @retval None
- */
- static void SystemClock_Config(void)
- {
- RCC_ClkInitTypeDef RCC_ClkInitStruct;
- RCC_OscInitTypeDef RCC_OscInitStruct;
- /* Enable HSE Oscillator and activate PLL with HSE as source */
- RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
- RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
- RCC_OscInitStruct.HSIState = RCC_HSI_OFF;
- RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
- RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
- RCC_OscInitStruct.PLL.PLLM = 8;
- RCC_OscInitStruct.PLL.PLLN = 432;
- RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
- RCC_OscInitStruct.PLL.PLLQ = 9;
- RCC_OscInitStruct.PLL.PLLR = 7;
- if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
- {
- while(1) {};
- }
- /* Activate the OverDrive to reach the 216 Mhz Frequency */
- if(HAL_PWREx_EnableOverDrive() != HAL_OK)
- {
- while(1) {};
- }
- /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
- clocks dividers */
- RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
- RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
- RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
- RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
- RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
- if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7) != HAL_OK)
- {
- while(1) {};
- }
- }
- /**
- * @brief Configures EXTI line 15_10 (connected to PC.13 pin) in interrupt mode
- * @param None
- * @retval None
- */
- static void EXTI15_10_IRQHandler_Config(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- /* Enable GPIOC clock */
- __HAL_RCC_GPIOC_CLK_ENABLE();
- /* Configure PC.13 pin as input floating */
- GPIO_InitStructure.Mode = GPIO_MODE_IT_RISING;
- GPIO_InitStructure.Pull = GPIO_NOPULL;
- GPIO_InitStructure.Pin = GPIO_PIN_13;
- HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
- /* Enable and set EXTI line 15_10 Interrupt to the lowest priority */
- HAL_NVIC_SetPriority(EXTI15_10_IRQn, 2, 0);
- HAL_NVIC_EnableIRQ(EXTI15_10_IRQn);
- }
- /**
- * @brief EXTI line detection callbacks
- * @param GPIO_Pin: Specifies the pins connected EXTI line
- * @retval None
- */
- void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
- {
- if (GPIO_Pin == GPIO_PIN_13)
- {
- /* Toggle LED1 */
- BSP_LED_Toggle(LED1);
- }
- }
- #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****/
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