mpc5748g uart rx dma and timeout problem

[1113240626]

 I use mpc5748g to develop uart rx dma and timeout feature. But I encountered some problems.When I configured the program and ran it, the first rx timeout interrupt could enter and read data normally, but after that, the timeout interrupt kept triggering and I couldn't clear it. please help me!!

[PetrS]

Hi,

what is UARTPTO register setting. Does a UARTCTO reset on timeout?
You can try to set/clear SR bit on timeout as description of TO bit shows.

BR, Petr

[1113240626]

 Thank you for your reply!!

I have tried the following points, but none of them worked。

1、write UARTPTO for clear UARTCTO.

2、write 1 to TO bit。