Arduino ESP32:测试GPIO中断功能二

Posted 2021-11-10 perseverance52

Arduino ESP32:测试GPIO中断功能二

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• 相关篇《Arduino ESP32:测试GPIO中断功能》

实例代码

/*
 测试功能中断
  接线说明： 按键1接16，按键2接17
*/

#include <Arduino.h>
#include <FunctionalInterrupt.h>

#define BUTTON1 16
#define BUTTON2 17

class Button{
public:
        Button(uint8_t reqPin) : PIN(reqPin){
                pinMode(PIN, INPUT_PULLUP);
                attachInterrupt(PIN, std::bind(&Button::isr,this), FALLING);//下降沿触发
        };
        ~Button() {
                detachInterrupt(PIN);
        }

        void IRAM_ATTR isr() {
                numberKeyPresses += 1;
                pressed = true;
        }

        void checkPressed() {
                if (pressed) {
                        Serial.printf("Button on pin %u has been pressed %u times\\n", PIN, numberKeyPresses);
                        pressed = false;
                }
        }

private:
        const uint8_t PIN;
    volatile uint32_t numberKeyPresses;
    volatile bool pressed;
};

Button button1(BUTTON1);
Button button2(BUTTON2);


void setup() {
    Serial.begin(115200);
}

void loop() {
        button1.checkPressed();
        button2.checkPressed();
}

将相关的按键中断函数分开写

• 主程序：

/*
 测试功能中断
  接线说明： 按键1接16，按键2接17
*/

#include <Arduino.h>
#include <FunctionalInterrupt.h>
#include "Button.h"
#define BUTTON1 16
#define BUTTON2 17

Button button1(BUTTON1);
Button button2(BUTTON2);


void setup() {
    Serial.begin(115200);
}

void loop() {
        button1.checkPressed();
        button2.checkPressed();
}

• Button.h文件

#include <FunctionalInterrupt.h>
class Button{
public:
        Button(uint8_t reqPin) : PIN(reqPin){
                pinMode(PIN, INPUT_PULLUP);
                attachInterrupt(PIN, std::bind(&Button::isr,this), FALLING);//下降沿触发
        };
        ~Button() {
                detachInterrupt(PIN);
        }

        void IRAM_ATTR isr() {
                numberKeyPresses += 1;
                pressed = true;
        }

        void checkPressed() {
                if (pressed) {
                        Serial.printf("Button on pin %u has been pressed %u times\\n", PIN, numberKeyPresses);
                        pressed = false;
                }
        }

private:
    const uint8_t PIN;
    volatile uint32_t numberKeyPresses;
    volatile bool pressed;
};