9 bit dma uart RS485

[albertomainoni]

Please, how can I get and send ninth bit with DMA and UART?

[Hui_Ma · Accepted solution]

Hi,

It will be better to use software to set/read UARTx_C3 [T8] about 9-bit UART transmit/receive.

Even if using the DMA engineer, it also need core intervene to write/read the ninth data bit with UARTx_C3 [T8] bit.

Wish it helps.