I have implemented NUS on device A and confirmed that it can be connected from a PC by making it the advertising sender.
Device B can scan device A's advertisements and obtain values from the advertisement data.
I would like to add an NUS function to device B so that device B can search for a specific Bluetooth ID from the advertisement and set it on device A via an NUS connection.
I am currently adding NUS_C to device B and trying to run it, but ble_nus_c_init() returns 14.
Please tell me what to do.