How and with what can you write a program on a smartphone to remotely control a TV via infrared?

Question

Android

I'll try to formulate. I have an Android smartphone that supports infrared and I can use it as a remote control. I have already done this using the example of one program for Phillips TVs. But this program was limited to the most common functionality - changing the volume, switching channels, changing the backlight (in the case of TVs with Ambilight), etc.

But I need advanced functionality for these TVs, like in a service remote - for example: CSM, RJ45, CI +, HDMI , USB, etc. Unfortunately, this remote control is not available to me yet, let's say so. That is, I need to somehow upgrade the application of a conventional remote control by adding these functions, or simply make my own remote control from scratch. Something like this.

So I assumed that the person who created the Android application for a regular remote control could somehow find out the source code of this very remote control. But, is it possible that he wrote it from scratch, not knowing the source code? I would just like to try to do the same, but with a service console. I know that there is an Android service remote application for LG TVs.

I'm here for the first time in general and for me this question seems strange, but I'm really interested in it and I want to somehow understand, study something, how you can try to do this.

Answer 1

There is no app on w3bsit3-dns.com? I think for popular models and brands there should already be such software.
Most likely, he parsed pressing each button from the remote control, wrote it down, then “inserted” this request code into the application.
It seems to me that there is a similar logic as with a barcode reader.
IR receiver on a PC, soft-interceptor or in a notepad stupidly ... did not work with IR, but the principle seems to me like this
I won’t tell you what to write on, there are more knowledgeable people here.

Answer 2

Just downloaded irplus today. There you can assign scan codes to buttons and other things