MEGR 3171: Automatic Houseplant Monitor

int led1 = A2; 
int led2 = D7;
int led3 = D6;
int val = 0;

void setup() {
  pinMode(led1, INPUT); //reads the voltage coming from the storage
  pinMode(led2, OUTPUT); //builtin led to show response
  pinMode(led3, OUTPUT); //output voltage to the storage
  digitalWrite(led3, HIGH); //start sending voltage
}

void loop() {
  val = analogRead(led1);
  if (val > 3900) digitalWrite(led2, HIGH); //when theres water led on
  if (val < 3900) digitalWrite(led2, LOW); //no water, led turns off
  if (val < 3900) Particle.publish("no water", PRIVATE); //signals other                                                   //argons when theres no water
  delay(13000); //waits 13 seconds 
}

#define MOIST_CHECK_INTERVAL 3600000  ////take a reading each hour
int moist = 0;//variable to store soil value
unsigned long lastMoistCheck = 0;
int soil = A2;//Declare a variable for the soil moisture sensor 
int soilPower = D6;//Variable for Soil moisture Power
//Rather than powering the sensor through the V-USB or 3.3V pins, 
//we'll use a digital pin to power the sensor. This will 
//prevent oxidation of the sensor as it sits in the corrosive soil. 
int Ledlight = D7;  ///variable for pin D7
char waternow = 'waternow';
Servo myservo;
int pos = 0; ////initial position of servo motor
int pos2=340; /// final position of servo motor

void servo()
{       //////if a function for the servo is called, the motor will move to final position, then it will wait 4 seconds and return to initial position
        if ( servread() == waternow)
    {
        myservo.write(pos2);
        delay(4000);
        myservo.write(pos);
    }
}

void checkMoist()
{
     if(readSoil() < 1000)    ///An event will be published if the sensor reads a value below 1000
    {
      Particle.publish("moist", String(moist), PRIVATE); 
    }
    else
    {                                ///An event will be published if the sensor reads a value above 1000
     Particle.publish("moist", String(moist), PRIVATE);
    }
}


void setup()
{
    Particle.subscribe("no water", waterlevel, MY_DEVICES);  ///subscribe to argon with water level sensor
    
    Particle.subscribe("light", Light, MY_DEVICES);            ////Subscribe to argon with light sensor
    
    Particle.function("servo", ser);   ///function used to activate the servo motor
    myservo.attach(D8);  ////attached motor to pin D8
    myservo.write(pos);//// when Argon is powered, servo motor will be in the initial position
    checkMoist(); /// contains conditioning info to publish events
    Particle.function("checkMoist", checkHandler); /// function used to call in a reading from the sensor
    Particle.variable("moistValue", moist);  /// variable holding the most recent reading
    pinMode(Ledlight, OUTPUT); ////Set d7 as an OUTPUT
pinMode(soilPower, OUTPUT);//Set D6 as an OUTPUT
digitalWrite(soilPower, LOW);//Set to LOW so no power is flowing through the sensor
}

void loop () 
{
    if(lastMoistCheck + MOIST_CHECK_INTERVAL < millis())
    {
      lastMoistCheck = millis();
      checkMoist();
    }
}


void Light(const char*event, const char*data)   ///// when the Light sensor takes a reading, the argon will blink one time
{
    
    digitalWrite(Ledlight, HIGH);
        delay(500);
        digitalWrite(Ledlight, LOW);
}

void waterlevel(const char*event, const char*data)  ////when the water level sensor detects no water, the argon will blink 3 times rapidly
{
         digitalWrite(Ledlight, HIGH);
        delay(200);
        digitalWrite(Ledlight, LOW);
        delay(200);
        digitalWrite(Ledlight, HIGH);
        delay(200);
        digitalWrite(Ledlight, LOW);
        delay(200);
        digitalWrite(Ledlight, HIGH);
        delay(200);
        digitalWrite(Ledlight, LOW);
}

//This is a function used to get the soil moisture content
int readSoil()
{
    digitalWrite(soilPower, HIGH);//turn D6 "On"
    delay(10);//wait 10 milliseconds 
    moist = analogRead(soil);
    digitalWrite(soilPower, LOW);//turn D6 "Off"
    return moist;
}

int checkHandler(String command)
{
    checkMoist();
    return 1;
}


int servread()
{
    return waternow;
}



int ser(String command)
{
    servo();
    return 1;
}