https://devzone.nordicsemi.com/f/nordic-q-a/71732/libuarte-missing-dataHello, i have an application with soft device 112 and libuarte_async on nrf52811. Everything working well when I&#39;m sending small amout of data. But now i have a task to update firmware in external IC over TWI/I2C. That firmware should be writen inen-USTelligent Community 13Thu, 18 Feb 2021 11:52:10 GMThttps://devzone.nordicsemi.com/thread/295064?ContentTypeID=1Thu, 18 Feb 2021 11:52:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d495f20e-3b5a-4cd1-890e-902b7b97035bKenneth<p>Not sure which libuarte release you are working on, but make sure you are using the latest from nRF5 SDKv17.0.2, I do believe there have been some bug fixes that may apply.</p> <p>Also I believe that for the nRF52811 it can support a buffer size of 1023bytes (it&#39;s 10-bit, not 8-bit).</p> <p>The&nbsp;app_uart_flush(); call seems very odd, it should only be necessary to use&nbsp;nrf_libuarte_async_rx_free().</p><div style="clear:both;"></div>