84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file gpio.c
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* @brief This file provides code for the configuration
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* of all used GPIO pins.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2024 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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/* Includes ------------------------------------------------------------------*/
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#include "gpio.h"
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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/*----------------------------------------------------------------------------*/
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/* Configure GPIO */
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/*----------------------------------------------------------------------------*/
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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/** Configure pins
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PH0-OSC_IN (PH0) ------> RCC_OSC_IN
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PH1-OSC_OUT (PH1) ------> RCC_OSC_OUT
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*/
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void MX_GPIO_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStruct = {0};
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/* GPIO Ports Clock Enable */
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__HAL_RCC_GPIOH_CLK_ENABLE();
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__HAL_RCC_GPIOA_CLK_ENABLE();
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/*Configure GPIO pins : PA2 PA4 */
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GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_4;
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GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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/* EXTI interrupt init*/
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HAL_NVIC_SetPriority(EXTI2_IRQn, 0, 0);
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HAL_NVIC_EnableIRQ(EXTI2_IRQn);
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HAL_NVIC_SetPriority(EXTI4_IRQn, 0, 0);
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HAL_NVIC_EnableIRQ(EXTI4_IRQn);
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}
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/* USER CODE BEGIN 2 */
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volatile uint8_t captureFlag = 0;
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extern uint32_t G_StartMillis;
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void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
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{
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if (GPIO_Pin == GPIO_PIN_2)
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{
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// æ£?查æ<C2A5>•èŽ·æ ‡å¿—，é<C592>¿å…<C3A5>é‡<C3A9>å¤<C3A5>æ<EFBFBD>•èŽ·
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if (!captureFlag)
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{
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// 处ç<E2809E>†ä¸Šå<C5A0>‡æ²¿è§¦å<C2A6>‘事ä»?
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G_StartMillis=0;
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G_StartMillis = HAL_GetTick(); //获å<C2B7>–当å‰<C3A5>系统时间
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// ç¦<C3A7>用对应的外部ä¸æ–，防æ¢å†<C3A5>次触å<C2A6>‘
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HAL_NVIC_DisableIRQ(EXTI2_IRQn);
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captureFlag = 1; // 设置æ<C2AE>•èŽ·æ ‡å¿—为已æ<C2B2>•èŽ·
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}
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}
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}
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/* USER CODE END 2 */
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