Send UARTE data , but an error has occurred

[tony55723]

Hi , 

I don't know if it is related to the code below?

#define UART_TX_BUF_SIZE                256                                         /**< UART TX buffer size. */

I cut two pictures and hope to help understand the problem.

I don't understand how the 0x04 framing error happened.

In addition, the baud rate used by UARTE is 250K.

Whether this transmission will affect Bluetooth？

Thanks

[awneil]

Is this still your DMX project?

As your 2nd picture shows, the DMX has a BREAK condition  before the first "real" UART frame.

I think it is to be expected that the UART will give a Framing Error on a BREAK ?

https://en.wikipedia.org/wiki/Universal_asynchronous_receiver-transmitter#Break_condition

You will probably need to detect the BREAK separately (as the start  of a new DMX protocol packet).

Again, DMX512 is a well-established and widely-used protocol - there must be plenty of prior art on this ...