https://devzone.nordicsemi.com/f/nordic-q-a/66836/nrf52840-zephyr-uart-callbackHello, Currently I have implemented a UART callback using the CONFIG_UART_ASYNC_API setting as follows: However, all data that I receive is appended constantly, until the buffer is full. I would like to empty the buffer every time UART_RX_RDY is receiveden-USTelligent Community 13Thu, 08 Oct 2020 07:36:12 GMThttps://devzone.nordicsemi.com/thread/273642?ContentTypeID=1Thu, 08 Oct 2020 07:36:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:adec7507-6668-430c-a15a-920496006ae3newUser<p>Solved:<br /><pre class="ui-code" data-mode="c_cpp">case UART_RX_RDY: { uart_rx_disable(uart_dev); printk(&quot;%s\n&quot;, recv_buf); memset(recv_buf, 0, sizeof(recv_buf)); uart_rx_enable(uart_dev, recv_buf, sizeof(recv_buf), MODEM_RX_TIMEOUT); } break;</pre></p><div style="clear:both;"></div>