APP_UART_COMMUNICATION_ERROR

RE: APP_UART_COMMUNICATION_ERROR

Somesh Burkule — Wed, 29 Apr 2020 06:17:15 GMT

Ok. thanks

RE: APP_UART_COMMUNICATION_ERROR

Susheel Nuguru — Tue, 28 Apr 2020 18:43:07 GMT

Somesh, please open a new case giving details about the problem you have and the development environment you are using.

RE: APP_UART_COMMUNICATION_ERROR

Somesh Burkule — Tue, 28 Apr 2020 13:37:23 GMT

Hi Susheel Nuguru,

I am also getting the same issue.

I tried with increasing Rx and Tx buffer size to 512, still nrf resets.

I am using APP_ERROR_HANDLER(p_event->data.error_communication) in uart_event_handle when APP_UART_COMMUNICATION_ERROR occurs which calls to app_error_handler_bare((ERR_CODE)) and nrf resets here.

How to resove it? why this error comes?

RE: APP_UART_COMMUNICATION_ERROR

Susheel Nuguru — Fri, 12 Aug 2016 16:44:23 GMT

Thank you for updating this thread

RE: APP_UART_COMMUNICATION_ERROR

Michel — Fri, 12 Aug 2016 14:29:44 GMT

There was something correpted in my code. I couldn't find it, so I started all over. And now I got rid of all the issues.

The buffersize was increased to 1024 but still after receiving 7 chars it caused the error. I don't know how it got corrupted, but it's working fine now.

Thanks for you support.

RE: APP_UART_COMMUNICATION_ERROR

Susheel Nuguru — Wed, 10 Aug 2016 20:03:24 GMT

the maximum size is what ever RAM is available for your fifo module without causing a stack overflow. You can calculate it if you can see your .map file.

example can me

RAMSIZE_ON_YOUR_DEVICE minus 
RAM USED BY SOFTDEVICE minus
RAM used by your application = RAM left unused

RE: APP_UART_COMMUNICATION_ERROR

Michel — Wed, 10 Aug 2016 18:41:14 GMT

Thank you For your reply.

I already played with the buffer size. How big can I make this buffer? What will be the maximum?

RE: APP_UART_COMMUNICATION_ERROR

Susheel Nuguru — Wed, 10 Aug 2016 16:29:44 GMT

increase your TX/RX fifo buffer so that fifo has more free buffer in hand (this must be some #define in your main.c file). The APP_UART_COMMUNICATION_ERROR says that the error was inside app_uart_fifo.c module and since it was unable to get free buffer from fifo module, the uart driver bailed out.