relayUnit.ino

#include <readiness_io.h>
#include <Ticker.h>
#include "config.h"


const int       LED_PIN        = 5;      // The pin connecting the LED (D3)
const int       INTERRUPT1_PIN  = 14;    // The pin connects the test button (D5)
const int       INTERRUPT2_PIN  = 12;    // The pin connects the 2nd test button (D6)
const int       SOLENOID_PIN = 13;       // The pin connects to the relay (D7)

volatile byte interrupt = 0;

readiness_io client(CHANNEL_ID, TOPIC, SENSOR_ID, VERSION, FORMAT);
Ticker timer;


void button1Interrupt() {
  digitalWrite(LED_PIN, HIGH);
  digitalWrite(SOLENOID_PIN, HIGH);

}

void button2Interrupt() {
  digitalWrite(LED_PIN, LOW);
  digitalWrite(SOLENOID_PIN, LOW);
}

/* Interrupt timer for collecting data to the Readiness.io server */
void readFromServer(){
  interrupt++;
}

void setup() {
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUILTIN_LED, OUTPUT);
  pinMode(SOLENOID_PIN, OUTPUT);
  digitalWrite(SOLENOID_PIN, HIGH);
  digitalWrite(BUILTIN_LED, HIGH); // internal LED is switched on when low - so we have to switch it off/

  Serial.begin(115200);
  Serial.setTimeout(2000);
  while(!Serial) { } // Wait for serial to initialize.
  Serial.println("Device Started");

  Serial.print("Connecting to ");
  Serial.println(WIFI_SSID);
  client.wifiConnection(WIFI_SSID, WIFI_PASS);


  pinMode(INTERRUPT1_PIN, INPUT);
  pinMode(INTERRUPT2_PIN, INPUT);
  attachInterrupt(digitalPinToInterrupt(INTERRUPT2_PIN), button2Interrupt, RISING);  // Attach the interrupt.
  attachInterrupt(digitalPinToInterrupt(INTERRUPT1_PIN), button1Interrupt, RISING);  // Attach the interrupt.
  timer.attach(UPDATE_RATE, readFromServer);
  client.testConnection();
}


void loop() {
  if(interrupt>0){
    String result = client.subscribe(LISTEN_TOPIC);
    float  reading = client.getReading(result);
    if (reading == 0) {
      digitalWrite(SOLENOID_PIN, HIGH);
      digitalWrite(LED_PIN,HIGH);
    } else {
      digitalWrite(SOLENOID_PIN, LOW);
      digitalWrite(LED_PIN,LOW);
    }
    interrupt=0;
  }
}