how to discover custom characteristic uuid which is inside primary service

[nikunj8086]

hi,

i  am working on a project were i have to discover all the service on peripheral device and fetch data from it like nrf connect app.

so i am using nrf52832 with sdk 14.2 as central device and Nordic thingy 52 as a peripheral device.

i have modified db_discovery library to discover all the services on connected peripheral device.

for Nordic thingy's case i am getting all the service with it's characteristic until the dfu service is discovers  dfu service 0xFE59 which is primary service.

but it's characteristic is secondary type so characteristic uuid i am only getting 0x0000. but it's actual UUID is 8EC90001-F315-4F60-9FB8-838830DAEA50.

in case of custom service discovery i have done reading from service handle to get 128-bit uuid of custom service. but same i not able to do with characteristic.

please help me to discover costom characteristic within primary service.

[FormerMember]

I would recommend you to read the application note nAN-36 - Creating Bluetooth Low Energy Applications Using nRF51822, it explains about how to use vendor specific UUIDs (custom UUIDs).