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ILI9881C DSI on STM32H747

Iris-DM
Associate III

I have a third party screen that is driven by an ILI9881C and I am having a lot of trouble getting TouchGFX up and running.

I first started running DSIHost in Adapted Command mode with TE Pin and I could configure the driver's registers as necessary and turn the display on (with a PWM for the LED backlight), however I could not display any frame data via TouchGFX.

Looking further, I realised that the ILI9881C does not have internal GRAM, and therefore I could only run it in Video mode. 

On switching DSIHost to video mode in CubeMX, my initialisation code no longer works, with all the DSI Writes returning a timeout error.

If anyone has experience in getting this driver chip up and running with TouchGFX, or just a bit of help with configuring DSI in Video mode, it would be much appreciated!

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