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- #define key_rtn0 2
- #define key_rtn1 4
- int i;
- void setup()
- {
- Serial.begin(9600);
- pinMode(key_rtn0, INPUT);
- pinMode(key_rtn0, INPUT);
- }
- void loop()
- {
- for (i = 8; i < 8; i++){
- if (digitalRead(key_rtn0) == HIGH){
- Serial.println("1");
- }
- else{
- Serial.println("0");
- }
- delay(1);
- }
- Serial.println("");
- }
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