73 lines
1.6 KiB
Arduino
73 lines
1.6 KiB
Arduino
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const int trigPin = 9;
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const int echoPin = 10;
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const int ProxSensor = 2;
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const int relayPin = 12;
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int inputVal = 0;
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long duration;
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int distance;
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char piInput = 'N';
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void setup() {
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pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
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pinMode(echoPin, INPUT); // Sets the echoPin as an Input
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pinMode(LED_BUILTIN, OUTPUT);
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pinMode(relayPin, OUTPUT);
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digitalWrite(relayPin, LOW);
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Serial.begin(9600); // Starts the serial communication
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pinMode(ProxSensor,INPUT); //Pin 2 is connected to the output of proximity sensor
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}
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void loop() {
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boolean IROK = false;
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boolean UltraOK = false;
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// Clears the trigPin
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digitalWrite(trigPin, LOW);
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delayMicroseconds(2);
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// Sets the trigPin on HIGH state for 10 micro seconds
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digitalWrite(trigPin, HIGH);
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delayMicroseconds(10);
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digitalWrite(trigPin, LOW);
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// Reads the echoPin, returns the sound wave travel time in microseconds
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duration = pulseIn(echoPin, HIGH);
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// Calculating the distance
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distance= duration*0.034/2;
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if (distance < 70) UltraOK = true;
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else UltraOK = false;
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if(digitalRead(ProxSensor) == LOW ) IROK = true;
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else IROK = false;
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//if (IROK && UltraOK) Serial.println("A");
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if (IROK && UltraOK && Serial.available() > 0 ){
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if (Serial.read() == 'O') {
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digitalWrite(relayPin, HIGH);
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delay(5000);
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digitalWrite(relayPin, LOW);
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IROK = false;
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UltraOK = false;
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serialFlush();
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}
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}
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IROK = false;
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UltraOK = false;
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//Read from Pi here
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}
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void serialFlush(){
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while(Serial.available() > 0) {
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char t = Serial.read();
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}
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}
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