[NRF51822] HCI and BLE DFU coexistencehttps://devzone.nordicsemi.com/f/nordic-q-a/2435/nrf51822-hci-and-ble-dfu-coexistenceThis question is somewhat related to: devzone.nordicsemi.com/.../how-to-switch-between-over-the-air-and-uart-bootloader-mode I know it is possible to switch between HCI and BLE DFUs via a button or a timer - however, is it possible to have them activeen-USTelligent Community 13Wed, 14 May 2014 15:22:10 GMTRE: [NRF51822] HCI and BLE DFU coexistencehttps://devzone.nordicsemi.com/thread/9867?ContentTypeID=1Wed, 14 May 2014 15:22:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:737910be-9c02-4722-9638-5c82819dfae4Hung Bui<p>Hi Dmginc,</p> <p>I don&#39;t see any reason that this should not be done. You would need to modify the bootloader so that it supports both interface at the same time. When you receive a command (or a connect request) from one interface, you should disable the other interface and continue with the interface that has received the command.</p> <p>Please be noted that there is a blocking period when the radio is active that the CPU is halted so UART interface with hardware flow control is suggested.</p><div style="clear:both;"></div>