So im having an error each time i try to verify this code. It says “exit status 1 - “HIGH” was not declared in this scope.” and its referencing the 28th line. Where would I declare HIGH?
/*
* Traffic Light
*/
int carRed = 12; //assign the car lights
int carYellow = 11;
int carGreen = 10;
int button = 9; //button pin
int pedRed = 8; //assign the pedestrian lights
int pedGreen = 7;
int crossTime =5000; //time for pedestrian to cross
unsigned long changeTime;//time since button pressed
void setup() {
//configure all LED's as output
pinMode(carRed, OUTPUT);
pinMode(carYellow, OUTPUT);
pinMode(carGreen, OUTPUT);
pinMode(pedRed, OUTPUT);
pinMode(pedGreen, OUTPUT);
pinMode(button, INPUT); //configure button as input
digitalWrite(carGreen, HIGH); //turn on the green lights
digitalWrite(pedRed, LOW); //initialize red pedestrian light off
}
void loop() {
int state = digitalRead(button);
//check if button is pressed it is over 5 seconds since last button press
if(state == High && (millis() - changeTime)> 5000){
//call the function to change the lights
changeLights();
}
}
void changeLights() {
digitalWrite(carGreen, LOW); //greeen off
digitalWrite(carYellow, HIGH); //yellow on
delay(2000); //wait 2 seconds
digitalWrite (carYellow, LOW); //yelllow off
digitalWrite (carRed, HIGH); //red on
delay(1000); //wait 1 second till it's safe
digitalWrite(pedRed, LOW); //ped red off
digitalWrite(pedGreen, HIGH); //ped green on
delay(crossTime); //wait for preset time period
//flash the ped green
for (int x=0; x<10; x++) {
digitalWrite(pedGreen, HIGH);
delay(250);
}
digitalWrite(pedRed, HIGH);//turn ped red on
delay(500);
digitalWrite(carRed, LOW);//red off
digitalWrite(carYellow, HIGH); //yellow on
delay(1000);
digitalWrite(carYellow, LOW); //yellow off
digitalWrite(carGreen, HIGH);
changeTime = millis(); //record the time since last change of lights
//then return to the main program loop
}
