https://devzone.nordicsemi.com/f/nordic-q-a/49141/baud-rate-on-nrf52-issuesHi, I am evaluating two nRF52832 boards with a PCA10040. I am using the SDK examples Central and Peripheral to talk to each other on Tera Term. I am using the &quot;send file&quot; operation on tera term. On this file, I have typed six characters (all numbers)en-USTelligent Community 13Tue, 02 Jul 2019 12:21:44 GMThttps://devzone.nordicsemi.com/thread/195983?ContentTypeID=1Tue, 02 Jul 2019 12:21:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:af2c5f25-8b4f-4d44-bbe9-93665c553fa2J&#248;rgen Holmefjord<p>I suppose he is referring to the HW flow control lines, RTS and CTS. If enabled, these lines are controlled automatically by the UART peripheral. Please Google for more details.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/195769?ContentTypeID=1Mon, 01 Jul 2019 20:53:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:79c35d73-fc71-4239-b5d3-d8a80c0ebb4aAashay<p>Hey, could you explain what you mean by hardware handshake lines?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/195450?ContentTypeID=1Sat, 29 Jun 2019 09:02:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7f4383c5-45e8-461d-96b8-ea731dbc70edTurbo J<p>Looks normal to me, if you are using UART and not UARTE (with DMA).</p> <p>Reason is simply the little delay on every entry (and exit) from an interrupt handler. The first larger delay might be softdevice interrupting your UART receiver.</p> <p>At&nbsp; higher baud rates I recommend using hardware handshake lines.</p> <p>Also consider using UARTE instead of UART, and/or try rolling your own UART interrupt handler function. The NRF stuff might not be optimal for your case.</p><div style="clear:both;"></div>