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備忘 arduino 割込み

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void fun();

void setup(){
  Serial.begin(9600);
  pinMode(2,INPUT);
  attachInterrupt(digitalPinToInterrupt(2),fun,RISING);
}

void loop(){
}

void fun(){
  Serial.println(1);
}

attachInterrupt(digitalRead(pin),fun,condition)は非推奨
attachInterrupt(digitalPinToInterrupt(pin),fun,condition)とする

回路は、スイッチを入れると、pin(2)に電圧がかかる、というもの。

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