Using Dma wich UART

[jalelboujezza]

Posted on March 25, 2015 at 17:45

Hello,

i'm trying to send UART frame using DMA.==> the problem is that the last bytes in the UART fifo not sended. and when i send the next frame i receive the last byte of the old frame. is there any mothod to clear the UART fifo before starting DMA transfer ???why the last bytes in the fifo not sended ? 

[jalelboujezza]

Posted on March 25, 2015 at 17:50I'm Using SPC5606

[Erwan YVIN]

Posted on March 27, 2015 at 10:59

Hello ,

Maybe you can use the register UARTSR.RMB (Release Message Buffer)After reading the data in the buffer you can clear by software.   Best regards                  Erwan