ioheating.ino

// This #include statement was automatically added by the Particle IDE.
#include "OneWire/OneWire.h"

// Thihttps://build.particle.io/build/560516a01ee97f78150016ef#s #include statement was automatically added by the Particle IDE.
#include "spark-dallas-temperature/spark-dallas-temperature.h"

int heater = D0;
int led2 = D7;

int sensors = -1;
double temp = -99;
double target = 0;

DallasTemperature dallas(new OneWire(D1));

void setup()
{

    int targetRead = 0;
    targetRead =  EEPROM.read(1);
    target = targetRead;

    Spark.function("setTarget",setTargetTemp);
    Spark.function("readEEPROM",readEEPROM);
    Spark.variable("temp", &temp, DOUBLE);
    Spark.variable("target", &target, DOUBLE);
    Spark.variable("sensors", &sensors, INT);

    dallas.begin();

    // Lets make sure we aren't heating
    pinMode(led2, OUTPUT);
    heaterOff("");
    
    RGB.control(true);
    RGB.color(255, 255, 255);
    RGB.brightness(0);
}


int heaterOn(String command) {
    pinMode(heater, OUTPUT);
    digitalWrite(heater, HIGH);
    digitalWrite(led2,HIGH);
}

int heaterOff(String command) {
    pinMode(heater, INPUT_PULLDOWN);
    digitalWrite(led2,LOW);
}

unsigned long lastPublish = 0;

void loop()
{
    unsigned long now = millis();
    sensors = dallas.getDeviceCount();
    double newTemp = -127;
    for(int i =0; i<10 && newTemp == -127; i++){
        dallas.requestTemperatures();
        newTemp = dallas.getTempCByIndex( 0 );
    }
    temp = newTemp;
   
    if(temp < target){
        heaterOn("");
    } else if(temp > target + 0.2) {
        heaterOff("");
    }
   
   if(now - lastPublish > 60 * 1000){
        Spark.publish("temperature", String(temp));
        lastPublish = now;
    }
    delay(5000);
}


int setTargetTemp(String command) {
    target = command.toFloat();
    uint8_t targetWrite = command.toInt();
    EEPROM.update(1, targetWrite);
    return 1;
}

int readEEPROM(String address){
    return EEPROM.read(address.toInt());
}


// Randomly chosen bytes to store in EEPROM once a valid state is set
uint8_t validationBytes[] = {251,21,87,31,156};

bool validateEepromState(){
   size_t endOfMemory = EEPROM.length();
   for (uint32_t i=0; i < arraySize(validationBytes); i++ ){
        if(validationBytes[i] != EEPROM.read(endOfMemory - i))
        {
            return false;
        }
   }
   return true;
   
}