STM32H750 UART4 + RS485 + DMA not working
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2019-11-07 4:10 AM
Hi,
I have some problems with UART4 on STM32H750. Uart4 is asynchronous RS485 mode mapped on PC11,PC10 and PA15 (DE).
- I tried to SWAP RX/TX without succeed. Finally, I swapped it by wire.
- DMA not working properly. DMA Counter works. Memory address never increment, all car was write on tab[0]. Data was 32bits aligned on RAM_D1, increment addresss is checked on cubeMX. Cache is disabled...
Anyone tried UART4 DMA on STM32H750 cubeMX ?
Regards,
Benjamin.
Labels:
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DMA
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STM32H7 Series
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