GFX02Z1 Firmware example: DMA does not work

[meltabo]

Hello Everyone,

I tried the GFX02Z1 "HelloWorld" firmware example on the Nucleo H723ZG. Apparently the example does not work in DMA mode but alway gets stuck in DMA_TxErrorCallback. When switching to No DMA mode it works perfectly well.

Did anyone encounter the same problem? Due to performance issues I'd really like to have the DMA mode running.

I appreciate any help :)

[Imen.D]

Hello @meltabomeltabo,

Did you follow exactly the readme file, how the hardware connections?

It maybe the problem is related to memory layout and internal data cache (D-Cache) of the Cortex-M7 core. 

Please try to follow this article, it may help you:

• FAQ-DMA-is-not-working-on-STM32H7-devices.

Imen