Example TouchGFX application does not work on all STM32F469I discovery boards.
Hi,
Currently I have 5 STM32F469I Discovery boards:
- 1 x MB1189 B-02 (Revision that is not mentioned in the User Manual, chapter 6.2 product history).
- 4 x MB1189 B-08 (F469NIH6).
Have been using the B-02 for some time without any problems.
When I use any B-08 board with a default TouchGFX (4.20) template the display does not turn on. When I check the debugger all the display commands (OTM8009a) commands have a time-out.
Even without flashing the B-08 boards when they come straight out of the packaging, the display does not turn on when I connect the usb cable.
However, when I try the precompiled demo from 2019 (from this page) the display does turn on, but the program enters some fault handler as it gets stuck. On the B-02 board this demo does run without problems (except that the images are not loaded from the external flash).
What is the difference between these boards, which driver do I need to control the display?