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https://github.com/STMicroelectronics/STM32CubeF3.git
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329 lines
11 KiB
C
329 lines
11 KiB
C
/**
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******************************************************************************
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* @file GPIO/GPIO_EXTI/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 STM32F3xx 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</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 STM32F3xx_HAL_Examples
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* @{
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*/
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/** @addtogroup GPIO_EXTI
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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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static void SystemClock_Config(void);
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static void Error_Handler(void);
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static void EXTILine0_Config(void);
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static void EXTILine2_TSC_Config(void);
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static void EXTILine9_5_Config(void);
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static void EXTILine15_10_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 STM32F3xx GPIO HAL API to toggle PC0, PC1,
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PC2, and PC3 IOs (connected to LED1, LED2, LED3 and LED4 on STM32373C-EVAL board)
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in an infinite loop.
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To proceed, 4 steps are required: */
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/* STM32F3xx 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- Initialize LEDs mounted on EVAL board */
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BSP_LED_Init(LED1);
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BSP_LED_Init(LED2);
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BSP_LED_Init(LED3);
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BSP_LED_Init(LED4);
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/* -1- Configure EXTI Line0 (connected to PA0 pin) in Interrupt mode */
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/* Do basically the same as BSP_PB_Init(BUTTON_TAMPER, BUTTON_MODE_EXTI); */
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EXTILine0_Config();
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/* -2- Configure EXTI Line2 (connected to PA2 pin) in interrupt mode */
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/* Do basically the same as BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_EXTI); */
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EXTILine2_TSC_Config();
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/* -3- Configure EXTI Line9-5 (connected to PE6 pin) in interrupt mode */
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/* Do basically the same as BSP_PB_Init(BUTTON_SEL, BUTTON_MODE_EXTI); */
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EXTILine9_5_Config();
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/* -4- Configure EXTI Line15-10 (connected to PF10 pin) in interrupt mode */
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/* Do basically the same as BSP_PB_Init(JOY_UP, BUTTON_MODE_EXTI); */
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EXTILine15_10_Config();
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while (1)
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{
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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) = 8000000
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* HSE PREDIV = 1
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* PLLMUL = RCC_PLL_MUL9 (9)
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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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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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/* Enable HSE Oscillator and activate PLL with HSE as source */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
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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, PCLK1 and PCLK2
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clocks dividers */
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
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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_DIV2;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2)!= 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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/* User may add here some code to deal with this error */
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while(1)
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{
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}
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}
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/**
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* @brief Configures EXTI Line0 (connected to PA0 pin) in interrupt mode
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* @param None
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* @retval None
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*/
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static void EXTILine0_Config(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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/* Enable GPIOA clock */
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__HAL_RCC_GPIOA_CLK_ENABLE();
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/* Configure User Button, connected to PA0 IOs in External Interrupt Mode with Falling edge trigger detection. */
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GPIO_InitStructure.Pin = GPIO_PIN_0;
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GPIO_InitStructure.Mode = GPIO_MODE_IT_RISING;
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
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/* Enable and set EXTI Line2_TS Interrupt to the lowest priority */
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HAL_NVIC_SetPriority(EXTI0_IRQn, 2, 0);
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HAL_NVIC_EnableIRQ(EXTI0_IRQn);
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}
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/**
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* @brief Configures EXTI Line2_TS (connected to PA2 pin) in interrupt mode
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* @param None
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* @retval None
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*/
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static void EXTILine2_TSC_Config(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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/* Enable GPIOA clock */
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__HAL_RCC_GPIOA_CLK_ENABLE();
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/* Configure User Button, connected to PA2 IOs in External Interrupt Mode with Falling edge trigger detection. */
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GPIO_InitStructure.Pin = GPIO_PIN_2;
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GPIO_InitStructure.Mode = GPIO_MODE_IT_FALLING;
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
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/* Enable and set EXTI Line2_TS Interrupt to the lowest priority */
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HAL_NVIC_SetPriority(EXTI2_TSC_IRQn, 2, 0);
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HAL_NVIC_EnableIRQ(EXTI2_TSC_IRQn);
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}
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/**
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* @brief Configures EXTI Line9_5 (connected to PE6 pin) in interrupt mode
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* @param None
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* @retval None
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*/
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static void EXTILine9_5_Config(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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/* Enable GPIOE clock */
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__HAL_RCC_GPIOE_CLK_ENABLE();
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/* Configure Joystick SEL Button, connected to PE6 IOs in External Interrupt Mode with Rising edge trigger detection. */
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GPIO_InitStructure.Pin = GPIO_PIN_6;
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GPIO_InitStructure.Mode = GPIO_MODE_IT_RISING;
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GPIO_InitStructure.Pull = GPIO_PULLDOWN;
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GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(GPIOE, &GPIO_InitStructure);
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/* Enable and set EXTI15_10 Interrupt to the lowest priority */
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HAL_NVIC_SetPriority(EXTI9_5_IRQn, 1, 0);
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HAL_NVIC_EnableIRQ(EXTI9_5_IRQn);
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}
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/**
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* @brief Configures EXTI Line9_5 (connected to PE6 pin) in interrupt mode
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* @param None
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* @retval None
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*/
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static void EXTILine15_10_Config(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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/* Enable GPIOF clock */
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__HAL_RCC_GPIOF_CLK_ENABLE();
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/* Configure Joystick UP Button, connected to PF10 IOs in External Interrupt Mode with Rising edge trigger detection. */
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GPIO_InitStructure.Pin = GPIO_PIN_10;
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GPIO_InitStructure.Mode = GPIO_MODE_IT_RISING;
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GPIO_InitStructure.Pull = GPIO_PULLDOWN;
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GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(GPIOF, &GPIO_InitStructure);
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/* Enable and set EXTI15_10 Interrupt to the lowest priority */
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HAL_NVIC_SetPriority(EXTI15_10_IRQn, 1, 0);
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HAL_NVIC_EnableIRQ(EXTI15_10_IRQn);
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}
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/**
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* @brief EXTI line detection callbacks
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* @param GPIO_Pin: Specifies the pins connected EXTI line
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* @retval None
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*/
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void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
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{
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if(GPIO_Pin == TAMPER_BUTTON_PIN)
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{
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/* Toggle Green LED1 */
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BSP_LED_Toggle(LED1);
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}
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if(GPIO_Pin == KEY_BUTTON_PIN)
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{
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/* Toggle Green LED4 */
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BSP_LED_Toggle(LED4);
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}
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if(GPIO_Pin == SEL_JOY_PIN)
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{
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/* Toggle Green LED2 */
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BSP_LED_Toggle(LED2);
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}
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if(GPIO_Pin == UP_JOY_PIN)
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{
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/* Toggle Blue LED3 */
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BSP_LED_Toggle(LED3);
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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(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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/* 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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