Interrupts

Interrupt, Switch Blinking LED from Red to Yellow

Experimented with some of the values.

Tested the button with pin13 before proceeding- button works.

Did not consistently get it to switch colors every time I pressed the button down.

First interrupt attempt (successful), includes questions:

int rLED=9;
int yLED=10;

int ledOn=5;

volatile int switch_color=2;

//see loop for onoff pattern, did other iterations with more complex onoff patterns, made it more difficult to cue the interrupt
int ledDelay=250;

void setup() {

  pinMode(rLED,OUTPUT);
  pinMode(yLED,OUTPUT);

  pinMode(switch_color,INPUT);
  attachInterrupt(digitalPinToInterrupt(switch_color),switchLed,FALLING);
//does rising or falling matter? maybe only needed with more than 2

  ledOn=rLED;

  Serial.begin(9600);
//does this impact the switch back to red from yellow?

}


void switchLed() {
    ledOn++;
    if (ledOn > yLED) {
        ledOn = rLED;
    }
}


void loop() {
//red LED turns on and off based on delay variable, then on for delay*10, and off for delay*5 before repeating
digitalWrite(ledOn,HIGH);
delay(ledDelay);
digitalWrite(ledOn, LOW);
delay(ledDelay);


}