/*
modified on Apr 10, 2021
Modified by MehranMaleki from Arduino Examples
Home
*/

// this is using the HiLetgo 5V 4 Channel Relay Shield
// pinout is apparently 7,6,5,4

#define USE_SHT30

#ifdef USE_SHT30

#include "SHT85.h"
#define SHT85_ADDRESS         0x44

SHT85 sht30;

#else
#include <Wire.h>
#include "DFRobot_SHT20.h"

TwoWire twowire;
DFRobot_SHT20 sht20(&twowire);
#endif

void fanOn() {
  digitalWrite(7, HIGH);
}

void fanOff() {
  digitalWrite(7, LOW);
}


const int PIN_RELAY4 = 4;
const int PIN_RELAY3 = 5;

void setup()
{
    pinMode(PIN_RELAY4, OUTPUT);
    pinMode(PIN_RELAY3, OUTPUT);
    pinMode(7, OUTPUT);
    digitalWrite(7, LOW);
    
    Serial.begin(115200);
#ifdef USE_SHT30 
    Wire.begin();
    sht30.begin(SHT85_ADDRESS);
    Wire.setClock(10000);
#else
    twowire.setClock(10000);
    sht20.initSHT20();                         // Init SHT20 Sensor
#endif
    delay(100);
    //sht20.checkSHT20();                        // Check SHT20 Sensor
}


void loop()
{
  while (Serial.available()) {
    const int c = Serial.read();
    if (c == 's') {
  #ifdef USE_SHT30
      sht30.read();
      float humd = sht30.getHumidity();
      float temp = sht30.getTemperature();
#else
      float humd = sht20.readHumidity();         // Read Humidity
      float temp = sht20.readTemperature();      // Read Temperature
#endif
      Serial.print(humd);
      Serial.print(",");
      Serial.print(temp);
      Serial.print(",");
      Serial.print(digitalRead(PIN_RELAY4));
      Serial.print(",");
      Serial.print(digitalRead(PIN_RELAY3));
      Serial.println("");
    }
    if (c == 'z') digitalWrite(PIN_RELAY4, LOW);
    if (c == 'Z') digitalWrite(PIN_RELAY4, HIGH);
    if (c == 'y') digitalWrite(PIN_RELAY3, LOW);
    if (c == 'Y') digitalWrite(PIN_RELAY3, HIGH);
  }
  delay(1);
}