How can i clear the uart buffer?

[Pablo]

I use nrf51822 and soft device s130. I transmit some data using the printf function, and i need to clear the buffer before send data because sometimes i have noise in the channel.

Can somebody help me? Maybe exist some flush but i only see "app_fifo_flush" in the forum.

Thanks!

[Hung Bui]

Have you tried app_uart_flush() ? printf uses app_uart_fifo, the command should flush the FIFO.