Example TouchGFX application does not work on all STM32F469I discovery boards.

[EmbDev]

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?

[EmbDev]

The user-manual mentions that the Touch panel has been replaced.

• B-02: Unknown not mentioned in the user-manual.
• B-07: FRIDA FRD397B25009-D-CTK
• B-08: FRIDA FRD400B25025-A-CTK

[EmbDev · Accepted solution]

Solved it myself, created an example application with TouchGFX for board B08:

https://github.com/RTwTools/STM32F469I-Discovery

[BAl K.1]

can you tell me how you solved it? i have the same problem and i dont know what to do

[Tesla DeLorean]

This might be insightful

https://github.com/RTwTools/STM32F469I-Discovery/commit/26085432aa213f7dd75b59c06e9b40c444992ffa

Built with a different controller and settings.

[BAl K.1]

okay, i'll try that. thank you for your quick response