After changing base UUID of Nordic UART service it stops working

RE: After changing base UUID of Nordic UART service it stops working

run_ar — Thu, 29 Nov 2018 12:21:29 GMT

For reference:

https://devzone.nordicsemi.com/f/nordic-q-a/41014/unable-to-connect-nrf52832-dk-as-central-to-peripheral-device-sensortile

RE: After changing base UUID of Nordic UART service it stops working

Waqar Ahmed — Thu, 29 Nov 2018 08:29:36 GMT

no it is not possible for me too capture on air packet.yes i had check the ad report.in advt report mac address of my peripheral is shown .i am running ble_uart central example from sdk 15.in this example ble_advdata.c line 779 dataoffset variable become zero.this the issue.i have only change the nus base uuid with by one the service uuid which is advertised by peripheral(00000000-0000f-11e1-9ab4-0002a5d5c51b)

RE: After changing base UUID of Nordic UART service it stops working

run_ar — Tue, 27 Nov 2018 07:52:47 GMT

Could you capture a sniffer trace so I can see what is happening on air? Remember that when you scan for a device you will get an advertisement report. In the adv report event you need to parse the advertisement data and check the UUID. once the UUID is identified you can connect to the device.

RE: After changing base UUID of Nordic UART service it stops working

Waqar Ahmed — Tue, 27 Nov 2018 07:28:04 GMT

i am using nrf52 as a central and STEVAL-STLCS01V1(

)as a peripheral .peripheral advertise 5 different services UUID .one of them is 00001801-0000-1000-00805f9b345b the same uuid i have enter as nus base uuid in central side.but i failed to connect

RE: After changing base UUID of Nordic UART service it stops working

run_ar — Tue, 23 Feb 2016 13:42:53 GMT

Yes, you need to change it on the central as well.

RE: After changing base UUID of Nordic UART service it stops working

Deepak Kumar — Tue, 23 Feb 2016 13:42:00 GMT

i am using example of ble_uart example inside ble_peripheral. in this example i am changing my uuid. should i suppose to change somewhere else??

RE: After changing base UUID of Nordic UART service it stops working

run_ar — Tue, 23 Feb 2016 13:32:40 GMT

What is your central app? Is this on nRF51? If it is you simply change the base UUID the same way you did on the peripheral...

RE: After changing base UUID of Nordic UART service it stops working

Deepak Kumar — Tue, 23 Feb 2016 13:29:47 GMT

also i want to know concept behind this. why it is so.

thanks!!

RE: After changing base UUID of Nordic UART service it stops working

Deepak Kumar — Tue, 23 Feb 2016 13:27:56 GMT

sorry for asking stupid question to you. how can i change centeral uuid.

RE: After changing base UUID of Nordic UART service it stops working

run_ar — Tue, 23 Feb 2016 12:54:32 GMT

The Central will look for a specific UUID, so you have to update the UUID here as well. i.e. you have to update both central and peripheral so they use the same UUID.