Moved from STM32 MCU products forum board to MCU embedded software as the main question is about how to run the demo vs LCD versions.
I got STM32U5G9J-DK2 and this Discovery is still assembled with LCD board MB1860A version.
But the documentation suggesting this DK have LCD board MB1860B version and share only B version scheme.
I taked damage of my LCD board MB1860A and replaced it to MB1860B LCD board version from my next Discovery Kit STM32H7S78-DK.
And here arising some problems:
For example the BSP demo from example pack working flawlesly, but the main demo embedded from factory doesn't work with STM32U5G9J-DK2 and MB1860B version of LCD board. The LCD is dark and look as dead.
So my questions which could be provide the answer about incorrectly work of LCD sounds like:
1. Why doesn't the main demo work, despite of the docimentation suggestion that this kit is assembled with the MB1860B LCD version board?
2. How I can obtain the scheme for MB1860A LCD board version?
3. What are the differences between the MB1860A and MB1860B board versions?
4. What should I do to make the main demo work with STM32U5G9J-DK2 and the MB1860B LCD board version?
Thank you kind in advance for any information.
Hello,
Backlight control has changed from this (rev A):
to this (rev B):
That's the only change.
So double check the BL_CTRL signal. For instance, you could try to remove R9 and fit R10 or R2.
