https://devzone.nordicsemi.com/f/nordic-q-a/7103/esb-ble-communicationHi, I am evaluating the use of ESB(without Ack) and BLE as a possible solution for my project since i have no use of Ack and in Gazell it is mandatory to use Ack. I had heard that there was a way to have both BLE and ESB running on a device at the sameen-USTelligent Community 13Tue, 19 May 2015 11:40:44 GMThttps://devzone.nordicsemi.com/thread/25090?ContentTypeID=1Tue, 19 May 2015 11:40:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4ccb9d68-a7b4-4aef-a273-c2f4e811c02cHung Bui<p>@jayesh: Yes, it&#39;s possible. Our stacks provide timeslot API, that applicatino can request and have access to the radio when the stack is active. The stack will schedule and give the application a timeslot needed if there is no conflict with critical radio sessions.</p> <p>You can read more about timeslot in the stack&#39;s product specification.</p> <p>We currently don&#39;t have any example on ESB concurrently with BLE. However you can have a look at <a href="https://github.com/NordicSemiconductor/nRF51-multi-role-conn-observer-advertiser">this example</a> where we advertise (manually using direct access to radio) when remains in a BLE connection.</p><div style="clear:both;"></div>