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Reverse Engineering a IR Blaster

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bizkits:
Hi everyone, recently I purchased a Type C IR Blaster (https://de.aliexpress.com/item/1005006058268428.html?gatewayAdapt=glo2deu).
It works on an Android with their application Ocrustar.
However I want to make it work on a raspberry pi or microcontroller.

I pried open the IR Blaster and in it I see a microcontroller WCH 552ED06. But I can't find any documentation on this chip.
I did some research and think that it could be a chip which provides USB + IrDA (some kind of IR Specifications)?

My next step is to somehow get hold of information on how to write codes to communicate with the chip on a computer.
Anyone has any idea how/what I should search in order to start?

*attached is the image of the IR blaster

zilp:
This is what you are looking for:

https://www.wch-ic.com/products/CH552.html

NiHaoMike:

--- Quote from: bizkits on April 06, 2024, 12:01:43 pm ---However I want to make it work on a raspberry pi or microcontroller.

--- End quote ---
Just use an IR LED and a simple one transistor driver.

bizkits:

--- Quote from: zilp on April 06, 2024, 12:52:11 pm ---This is what you are looking for:

https://www.wch-ic.com/products/CH552.html

--- End quote ---

Thanks, but how do you know is this chip?

DavidAlfa:
Try decompiling the apk in https://www.decompiler.com/

There's an interesting file: sources/com/esmart/ir/IROTG.java
And the function sendIRDataToExternalDevice

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