Help with BLE beacons on NUCLEO WB15CC

I am using NUCLEO WB15CC and I am trying to develop a ble beacon application. i dont mind using Eddystone or Ibeacon. I just need to get the beacon working. there are guides available for beacon application development but, they are all restricted to some particular devices. Why is this ? What stops other DKs from using the same project ?
Out of curiosity, I tried one of the ble beacon examples on my NUCLEO-WB15CC board and I lost connection to my device. So, is there any way I can build a BLE beacon application on my board or am I constrained by the mbed limitations ? If I can do it on my own, where should I start ? Any help will be appreciated. Thank you !!