Posted on September 22, 2015 at 17:47Hi,
Im using an STM32F071RB.
I configured USART to receive data in DMA.
I often get reception stuck but I cant understand why.
I had a look at the registers:
- USART1->CR3 looses DMAR bit (0x00001040 becomes 0x00001000)
- USART1->ISR has RXNE bit stuck at 1
- DMA1->ISR goes to 0 (from 0x00000700)
Is it OVERRUN error? It looks disabled because USART_CR3_OVRDIS is 1.
What should I search for?
Thanks,
M.
#usart #dma
