BLE : UUID service (128bits) and UUID characteristic with a slight difference

[Will_008700]

Hi

based on nus example , I'd like to create  RX/TX characteristics with a custom UUID (128bits)

My problem is about the UUID  characteristics versus UUID service, for example my UUID service is like this

UUID service : 5ABB-1234-5614_.....

and I'd like a UUID characteristics with a slight difference (the first byte)due to the existing app that I have

  UUID characteristic for TX : 5BBB-1235-5614_.....

 UUID characteristic for RX : 5BBB-1236-5614_.....

I can't modify the first byte with sd_ble_gatts_service_add() function because it's based on UUID service, any suggestion?

thanks

[Turbo J]

AFAIK only solveable by adding the second UUID variant as another vendor specific UUID. This will increase softdevice RAM usage.

[Vidar Berg]

Yes, this is the correct way to solve it. Relevant API for reference: sd_ble_uuid_vs_add()

[Will_008700]

it works, thanks