https://devzone.nordicsemi.com/f/nordic-q-a/7440/nrf51422-simultaneous-uart-ble-antHello, I am currently working on a project that is using the nRF51422 chipset (Rev 2 silicon) and the S310 SoftDevice Version 1.0.0 and I am having some problems with the UART interface while I am advertising over BLE and ANT+. In my setup I am communicatingen-USTelligent Community 13Thu, 04 Jun 2015 17:23:57 GMThttps://devzone.nordicsemi.com/thread/26498?ContentTypeID=1Thu, 04 Jun 2015 17:23:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:415aff0c-6e2e-489e-ad53-2ff61c264c9cJohn<p>Hello @Rinzler. Are you enabling HW flow control on the UART? If not, the UART can become unreliable when the soft device is enabled. The soft device can block service of the UART interrupts long enough for the receive FIFO to fill and drop characters. There are several threads on this forum about this.</p> <p>If you are using HW flow control what is the nature of the failure you are seeing?</p><div style="clear:both;"></div>