I am trying to use a ST product (STM32F769I-DISCO) with the 7" Raspberry Pi MISI DPI screen (P/N: 8997466). STM offers a bridge adapter board which offers compatibility from their Discovery board to a Raspberry Pi Display (P/N: B-LCDAD-RPI1). That schematic is attached and matches that of a Raspberry Pi Touchscreen. However when it is hooked up, the screen is completely black, but when hooked up to the Pi it works as it should (so no Hardware issues).
I have a few questions regarding some of the communication protocols of the Screen. Is there Drivers for that specific touchscreen that need to be implemented first and what is the I2C address of the touchscreen? None of this information is provided via the Internet.
Is there anything I am missing in order to get these products to be compatible?
I would appreciate any help at all/ suggestions.