Serial UART lost charactershttps://devzone.nordicsemi.com/f/nordic-q-a/114616/serial-uart-lost-charactersHi all I currently have a project where i send and receive commands over UART to another chip. When i receive a message over UART, a callback is triggered and I continuously read the serial terminal using &quot; uart_fifo_read ( uart_dev_test , &amp; c , 1en-USTelligent Community 13Fri, 13 Sep 2024 08:14:48 GMTRE: Serial UART lost charactershttps://devzone.nordicsemi.com/thread/502443?ContentTypeID=1Fri, 13 Sep 2024 08:14:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:13dc2a03-2ba7-467d-a281-0b00d8bf331fmarsal<p>I am not sure if this is relevant for you but in my case, I had to use Timer support not to lose RX characters:</p> <div> <div><span>CONFIG_UART_1_NRF_HW_ASYNC_TIMER</span><span>=2</span></div> <div><span></span></div> <div><span>See:&nbsp;</span><a href="https://devzone.nordicsemi.com/f/nordic-q-a/102325/using-uart1-or-uart2-on-nrf9160dk-asset-tracker-v2/438642">https://devzone.nordicsemi.com/f/nordic-q-a/102325/using-uart1-or-uart2-on-nrf9160dk-asset-tracker-v2/438642</a>&nbsp;</div> </div><div style="clear:both;"></div>RE: Serial UART lost charactershttps://devzone.nordicsemi.com/thread/501963?ContentTypeID=1Tue, 10 Sep 2024 14:21:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f267e472-dcf3-4a20-9dd4-bd9d1e2f6d92Hung Bui<p>Hi&nbsp;Hkhan7861,</p> <p>Could you show me how the characters missing in your test ?&nbsp;<br />I did a quick test here with the echo_bot sample and it seems to work fine. I don&#39;t see any character missing:&nbsp;<br /><br /></p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1725978030395v1.png" alt=" " /></p> <p></p> <p>I changed&nbsp;MSG_SIZE to 1000 and reduce the number of message to 2</p> <div> <div><span>K_MSGQ_DEFINE</span><span>(</span><span>uart_msgq</span><span>, </span><span>MSG_SIZE</span><span>, </span><strong>2</strong><span>, </span><span>4</span><span><span>);<br /><br />Also I increased the main stack size:&nbsp;<br /></span></span> <div> <div><span>CONFIG_MAIN_STACK_SIZE</span><span>=4069</span></div> <div><span></span></div> </div> </div> </div><div style="clear:both;"></div>