嵌入式学习(39)-基于STM32的GPIO电平反转检测

一、概述

        项目中需要用的IO口的检测，主要是脉冲触发，所以需要去除由于扫描频率太快导致的二次捕捉误判，需要进行反转检测。

二、应用

        利用AI生成了一段代码

int main(void) {uint8_t lastState = 0;uint8_t currentState = 0;// Initialize GPIOGPIO_Config();while (1) {// Read the current state of PA0currentState = GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0);// Check if there is a change in stateif (currentState != lastState) {// State has changed, handle the event hereif (currentState == Bit_RESET) {// PA0 is now low// Add your code to handle the low state} else {// PA0 is now high// Add your code to handle the high state}// Update the last statelastState = currentState;}}
}