Sending dht11 through IR

Projects General Guidance
5

transmission code

#include "DHT.h"
#include <Wire.h>
#include <IRremote.h>
#include <IRremoteInt.h>
#include <CRC32.h>


#define DHT11_PIN A1     // pin connected to the DHT11 sensor
#define DHTTYPE DHT11    // DHT11 sensor type
#define irLedPin 13      // pin connected to IR LED
#define slave_address 9  // I2C slave address
CRC32 crc;
DHT dht(DHT11_PIN, DHTTYPE);
IRsend irsend;
int counter = 0;

void setup() {
  dht.begin();
  Serial.begin(9600);
  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(6, INPUT); // Setup for leads off detection LO +
  pinMode(2, INPUT); // Setup for leads off detection LO -
  pinMode(irLedPin, OUTPUT);
  Wire.begin(); // Initialize I2C communication
}

void loop() {
  int sensorValue = analogRead(A0); // Read the sensor value
  delay(1);
  counter++;
  if (counter == 5000) {
    int temperature = dht.readTemperature();
    if (!isnan(temperature)) {
      sendTemperatureIR(temperature);
      Serial.print("Temperatura: ");
      Serial.println(temperature);
    }
    
    float humidity = dht.readHumidity();
    if (!isnan(humidity)) {
      senddataI2C(humidity,temperature);
    }
    
    counter = 0;
  }
}

void sendTemperatureIR(int temperature) {
  // Convert temperature to a 16-bit value (0x0000 to 0xFFFF)
  unsigned int tempValue = map(temperature, 0, 100, 0, 0xFFFF);

  // Calculate CRC32 checksum for temperature value
  crc.reset();
  crc.update((uint8_t *)&tempValue, sizeof(tempValue));
  uint32_t checksum = crc.finalize();

  // Send temperature data along with CRC32 checksum using Sony IR protocol
  irsend.sendSony(tempValue, 16);
  delay(50); // Add a small delay between transmission of temperature and checksum
  irsend.sendSony(checksum, 32);

  // Blink LED to indicate transmission
  digitalWrite(LED_BUILTIN, HIGH);
  delay(100); // Blink duration
  digitalWrite(LED_BUILTIN, LOW);
}


void senddataI2C(float humidity,int temp) {
  int humidityInt = static_cast<int>(humidity);
  Wire.beginTransmission(slave_address);
Wire.write("Umidita=");
Wire.write(String(humidityInt).c_str());//per convertire il valore in una stringa
Wire.write("\n");
Wire.write("Temperatura=");
Wire.write(String(temp).c_str());
  Wire.endTransmission();
}

receiving code

#include <Wire.h>
#include <IRremote.h>
#define irReceiverPin 13 // Pin connected to IR receiver
IRrecv irrecv(irReceiverPin);
decode_results results;
int slave_address=9;
int receivedTemperature = 0;
int receivedTemperature1 = 0;

void servizio(int a){
  String dataReceived = "";
  while(Wire.available()){
    char c = Wire.read();
    dataReceived += c;
  }
  Serial.println(dataReceived);
  receivedTemperature = dataReceived.toInt();
}

void receiveIR() {
  if (irrecv.decode(&results)) {
    receivedTemperature1 = results.value;
    Serial.print("Received Temperature (Hex): 0x");
    Serial.println(receivedTemperature1, HEX); // Print received value in hexadecimal format
    irrecv.resume(); // Receive the next value
  }

void setup() {
  Wire.begin(slave_address);                // Join I2C bus with address 9
  Serial.begin(9600);
  irrecv.enableIRIn();
  Wire.onReceive(servizio); 
}


void loop() {
  receiveIR();
  delay(1000);
}