kYc0o f673d5af1e drivers/xbee: prevent 0 length packet sent to UART
Since the API doc doesn't specify what to do with 0
len writings into UART, we cannot assume that is
safe to do it, so this commit prevents it by checking
the length prior to the `uart_write()` operation.
2019-04-02 16:47:13 +02:00
..
2017-11-17 10:41:54 +01:00