Photon Relay Shield Cycler

photon-relay-shield-cycler.cpp

int onTime = 30000;
int offTime = 300000;
int cycles = 0;
bool isOn = true;
uint32_t startTime = millis();

int updateOnTime(String command){ 
    onTime = command.toInt();
    return onTime;
}

int updateOffTime(String command){ 
    offTime = command.toInt();
    return offTime;
}

int updateCycles(String command){ 
    cycles = command.toInt();
    return cycles;
}

void setup() { 
    Particle.function("updateOn", updateOnTime); 
    Particle.function("updateOff", updateOffTime);
    Particle.function("updateCyc", updateCycles);
    Particle.variable("cycles", &cycles, INT);
    Particle.variable("on", &onTime, INT);
    Particle.variable("off", &offTime, INT);

    pinMode(D0, OUTPUT); 
    pinMode(D1, OUTPUT); 
    pinMode(D2, OUTPUT); 
    pinMode(D3, OUTPUT); 
    
    startTime = millis();
    digitalWrite(D0, HIGH); // turn it on!
}

void loop() {
    uint32_t now = millis();
    if (isOn && now - startTime > (uint32_t)onTime) {
        digitalWrite(D0, LOW); // turn it off!
        startTime = now;
        isOn = false;
        cycles++;
    }
    else if (!isOn && now - startTime > (uint32_t)offTime) {
        digitalWrite(D0, HIGH); // turn it on!
        startTime = now;
        isOn = true;
    }
    delay(1000);
}