S32K344 UART

[Zsk]

Hi All

   UART with interrupt transceiver, now two MCU single-direction transceiver data with asynchronous no problem, at the same time transceiver will send and receive failure, what will be the reason？

                                                                                                                                                     thank you

[VaneB · Accepted solution]

Hi @Zsk 

Please correct me if I understand wrong.

From what I understood, you have the two devices connected to each other and you are trying to send at the same time that you are receiving and vice versa, am I correct?

B.R.

VaneB

[Zsk]

Found the problem, the status was switched to busy after asynchronous sending, and did not switch back, thank you

[wangjiawei]

I had the same problem, but I didn't solve it. Could you tell me exactly how you solved it, thank you very much

[Zsk]

I have changed the judgment condition before sending and receiving in the driver, sending only looks at the sending state, receiving only looks at the receiving state. Problem solved

[Zsk]

Yes ,and I found another problem :The host needs to send about 10 times before the slave can receive it.After the sending/receiving status is switched once, the data cannot be sent again.