Hii , i want to communicate one master with two slave bluetooths. how can we assign a bluetooth is master or slave?
If you start (connectable) advertising (sd_ble_gap_adv_start() ), the device can become a peripheral (slave) if a central (master) connects to it.
If you create a connection (sd_ble_gap_connect() ) you will be a central (master).
Thank you very much