Fatal error when not connect Uart port

[lamdo]

Hi,

I am trying ble_app_uart example of SDK 15.

When I do not connect Uart port (TX, RX) to other peripheral, I get fatal error (log via RTT).

```

0> <error> app: Fatal error

```

When UART port is connected, the program works normally.

Does anyone experience on this?

Thank you.

[Neil Newell]

That message is printed by the error checking in debug mode, and in the UART demo the error handler calls APP_ERROR_HANDLER if there is a comms error (very possible if comms not connected, wrong baud rate, too much data etc). 

The solution is to remove or replace the APP_ERROR_HANDLER call (depending on whether you want to know about comm errors or not).