Want to use nRF51822 as wireless connectivity chip (UART) to an external MCU using a UART 4 wire electrical interface.https://devzone.nordicsemi.com/f/nordic-q-a/6503/want-to-use-nrf51822-as-wireless-connectivity-chip-uart-to-an-external-mcu-using-a-uart-4-wire-electrical-interfaceAre there examples of routines that support communication with the external UART interface?en-USTelligent Community 13Tue, 14 Apr 2015 23:18:45 GMTRE: Want to use nRF51822 as wireless connectivity chip (UART) to an external MCU using a UART 4 wire electrical interface.https://devzone.nordicsemi.com/thread/22693?ContentTypeID=1Tue, 14 Apr 2015 23:18:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:907753f0-fa0f-4bbd-8db1-863b62344278Guilherme de Paula<p>I think you want to use the NUS example in the SDK. This basically turns the nRF51822 into a UART &lt;=&gt; BLE data pipe.</p><div style="clear:both;"></div>RE: Want to use nRF51822 as wireless connectivity chip (UART) to an external MCU using a UART 4 wire electrical interface.https://devzone.nordicsemi.com/thread/22692?ContentTypeID=1Tue, 14 Apr 2015 21:28:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:435d3e1c-3320-4bfa-bf11-6aed78efcdc1John<p>Yes, if you download the SDK there are UART examples. Also this forum has many articles regarding using the UART.</p><div style="clear:both;"></div>