arduino 做防盗器如何判断接口低电平，蜂鸣器响一声

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arduino 做防盗器如何判断接口低电平，蜂鸣器响一声，高电平不响

王尼玛1

1. bool state = true;
   
2. if(digatalRead(Pin) == 1){
   
3.   state = true;
   
4. }
   
5. if(digatalRead(Pin) == 0 && state){
   
6. digitalWrite(BeepPin,1); //高电平驱动蜂鸣器?
   
7. delay(1000);
   
8. digitalWrite(BeepPin,0);
   
9. state = fasle;
   
10. }

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