Help to connect Air Conditioning (with esp32) to Blynk (Mqtt Air Cooler)

Hello every body,
I have a Mitsubishi air conditioning at home, this machine have a connector for esp32(Arduino) called cn105
I have a esp32 already connected to Blynk MQTT Air Cooler/Heater, code is Arduino_Blynk_MQTT/Arduino_Blynk_MQTT.ino
Until here every thing is ok, but
What code I need to comunique from esp32 to Mitsubishi Air conditioning?
Thank you in advance

Read this before creating new topic:

  1. Search forum for similar topics
  2. Check https://docs.blynk.io
  3. Add details :
    • Hardware model + communication type. For example: ESP32
    • Smartphone OS (iOS or Android) + OS version
    • Blynk server region
    • Blynk Library version
    • Post your FORMATTED sketch code. Remove your AUTH TOKEN from code. Don’t post screenshots
    • Post your serial monitor output when experiencing some issues

:warning: If you don’t format your code, your topic can be deleted by moderators.

Here is a correct example of code formatting:

//#define BLYNK_TEMPLATE_ID           "TMPxxxxxx"
//#define BLYNK_TEMPLATE_NAME         "Device"
#include "BlynkEdgent.h"

void setup()
{
  Serial.begin(115200);
  delay(100);
  BlynkEdgent.begin();
}

void loop() {
  BlynkEdgent.run();
}

You’ll need to reverse engineer the Mitsubishi communication protocol (or find someone who has done this already) then write your own firmware to listen for MQTT messages and translate them to messages that the aircon can understand.
You’ll presumably also want to publish MQTT messages based on feedback from the aircon, to display within Blynk.

Pete.