https://devzone.nordicsemi.com/f/nordic-q-a/56968/how-to-run-2-baud-rates-on-same-uart-pins-in-nrf51Hello, I am using NRF51822. I want to run UART communication on two different baud rates for 2 different hardware on pin number P09(TX) and P11(RX) respectively. I have to use these two pins only for communicating with my hardware. I have no problem inen-USTelligent Community 13Fri, 24 Jan 2020 13:56:03 GMThttps://devzone.nordicsemi.com/thread/230879?ContentTypeID=1Fri, 24 Jan 2020 13:56:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:145b3590-7e18-4668-b928-643cabed0796awneil<p><img alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/5734._5F00_Insert-Code-_2D00_-Nordic-2.png" /></p> [quote userid="87131" url="~/f/nordic-q-a/56968/how-to-run-2-baud-rates-on-same-uart-pins-in-nrf51"]sometimes the data is not received. How can I fix this problem?.[/quote] <p>First of all, you need to work out what the problem actually is!</p> <ul> <li>Try to characterise &quot;sometimes&quot;</li> <li>Is it because your code is not listening at all at the correct time?</li> <li><span>Is it because your code is listening at&nbsp;the wrong baud rate at the time?</span></li> <li><span>ie, is there <em><strong>no</strong> </em>data received, or <em><strong>partial</strong> </em>data received, or <em><strong>corrupt</strong> </em>data received, or ... ?</span></li> <li><span>Are there hardware issues in your switching of the 2 external devices?</span></li> <li><span>etc, etc, etc, ...</span></li> </ul> <p><span>On debugging in general:</span></p> <p><span><a href="https://www.avrfreaks.net/comment/2418156#comment-2418156">https://www.avrfreaks.net/comment/2418156#comment-2418156</a></span></p> <p><span></span></p> <p><span>On debugging serial comms:</span></p> <p><span><a href="https://www.avrfreaks.net/comment/2336161#comment-2336161">https://www.avrfreaks.net/comment/2336161#comment-2336161</a></span></p> <p><span></span></p> <p><span>Lots of tips on how to make your system&nbsp;&quot;<em>debuggable</em>&quot;:</span></p> <p><span><a href="https://www.avrfreaks.net/forum/how-do-i-check-life-signs-scope-atmega2560-standalone">https://www.avrfreaks.net/forum/how-do-i-check-life-signs-scope-atmega2560-standalone</a></span></p><div style="clear:both;"></div>