https://devzone.nordicsemi.com/f/nordic-q-a/106391/nrf52840-uart-receiving-packets-missing-some-bytesHi, I am sending data from STM32 to nrf52840 via uart same baudrate In nrf uart init this way app_uart_comm_params_t const comm_params = { UART_APP_RX, UART_APP_TX, 0 , 0 , APP_UART_FLOW_CONTROL_DISABLED , false , #if defined en-USTelligent Community 13Thu, 07 Dec 2023 10:46:05 GMThttps://devzone.nordicsemi.com/thread/459332?ContentTypeID=1Thu, 07 Dec 2023 10:46:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b99b7a8c-3d97-48a3-8d16-aaf42f4744f0Jared<p>Did you try implementing flow control as suggested by the other commenter?&nbsp;</p> <p>Also, it&#39;s always nice to double check that the transmitter actually sends the data correctly by probing the data lines with a logic analyzer.</p> <p>regards</p> <p>Jared&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/459279?ContentTypeID=1Thu, 07 Dec 2023 07:29:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ba8e6c0b-16de-4aa6-8801-311d35db3160manobala12<p>Hi Turbo,</p> <p>I check this&nbsp;NRF_UARTE_BAUDRATE_115200 its working properly but i increase baudrate to&nbsp;</p> <div> <div><span>NRF_UARTE_BAUDRATE_230400 this but same error is repeating&nbsp;</span></div> <div><span></span></div> <div><span>&lt;info&gt; app: UART COMM ERROR<br />00&gt;<br />00&gt;<br />00&gt; &lt;info&gt; app: UART COMM ERROR<br />00&gt;<br />00&gt;<br />00&gt; &lt;info&gt; app: UART COMM ERROR<br />00&gt;<br />00&gt;<br />00&gt; &lt;info&gt; app: UART COMM ERROR</span></div> <div><span></span></div> <div><span>From which baudrate Flow control is mandatory can you explain&nbsp;</span></div> </div><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/459130?ContentTypeID=1Wed, 06 Dec 2023 10:08:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5f88fa0a-6896-4ba6-aa56-61bab058e771Turbo J<p>Flow control signals are mandatory at high baud rates for the UART to work properly. You will get FIFO overflows otherwise.</p><div style="clear:both;"></div>