After changing base UUID of Nordic UART service it stops working

[Deepak Kumar]

I have modified it so that it works with two nRF51 DKs, one acting as a central and other acting as a peripheral.

The base UUID for this service by default is

{0x9E, 0xCA, 0xDC, 0x24, 0x0E, 0xE5, 0xA9, 0xE0, 0x93, 0xF3, 0xA3, 0xB5, 0x00, 0x00, 0x40, 0x6E}

but I would like to use my own base UUID.

{{0x00, 0xC7, 0xC4, 0x4E, 0xE3, 0x6C, 0x51, 0xA7,0x33, 0x4B, 0xE8, 0xED, 0x00, 0x00, 0xB8, 0x03}}

It stops working.it connects to the uart application. in advertisement it shows with different uuid. the uuid i am using is apple midi specification.

after connecting a message popups that "doesn't support uart" and closes.

What am I missing?

[run_ar]

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.

[Deepak Kumar]

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

[Deepak Kumar]

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

thanks!!

[run_ar]

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...

[Deepak Kumar]

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??

[run_ar]

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