https://devzone.nordicsemi.com/f/nordic-q-a/10211/how-to-send-command-to-link-manager-via-hciHi: I want to let link manager controllby by me. for example, I want to ask link manager to emit such LMP_test_control, LMP_activate command via HCI. how to do by nRF51? Thanks; Allen;en-USTelligent Community 13Thu, 12 Nov 2015 13:47:48 GMThttps://devzone.nordicsemi.com/thread/37886?ContentTypeID=1Thu, 12 Nov 2015 13:47:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:032132ce-36b0-4864-9ddc-34f8c7080ab9Einar Thorsrud<p>There is no Host Controller Interface on the nRF51 (or nRF52 for that matter).</p><div style="clear:both;"></div>