心灵感应灯

#define GPIO_PIN 14 //  14--D5  不要上拉电阻
 // 板载led --D4 --2 号   有上拉电阻 给低电平是亮的
uint8_t led = LOW;
 
 
void setup(){
    pinMode(GPIO_PIN, INPUT);
    pinMode(BUILTIN_LED, OUTPUT);
    setLED();
    attachInterrupt(GPIO_PIN, highInterrupt, RISING);
 
}
 
void highInterrupt(){
    led = HIGH;
    detachInterrupt(GPIO_PIN);
    attachInterrupt(GPIO_PIN, lowInterrupt, FALLING);
}
 
void lowInterrupt(){
    led = LOW;
    detachInterrupt(GPIO_PIN);
    attachInterrupt(GPIO_PIN,  highInterrupt, RISING);
}
 
void setLED(){
    digitalWrite(BUILTIN_LED, led);
 
}
 
void loop(){
    setLED();    
}