APP UART COMMUNICATION ERROR eror code

[aep]

both for APP_UART_FIFO_INIT and APP_UART_INIT i never receive APP_UART_DATA_READY

but at least i get APP_UART_DATA sometimes. most of the times i get APP_UART_COMMUNICATION_ERROR with uart_evt->data.error_communication being either 1 or 4 or 8 randomly.

what is the meaning of the error code there and how can i use it to determine the actual error? The data on the line looks fine in a logic analyzer.

[Ole Bauck]

You can get FRAMING or BREAK errors if the transmitting device restarts, could that be the case? Do you get the error often? If you are using the APP_ERROR_HANDLER on the error I would consider changing it to a more suitable error handler, because APP_ERROR_HANDLER will either reset the chip or go into infinite while loop, see here.