RE: Write Characteristic only when Paired

Hung Bui — Fri, 21 Oct 2022 09:17:17 GMT

Hi Joao,

It's not possible to do the exact feature as you mentioned that the service/characteristic only visible to paired device.
But you can either do what you did to require permission or you can add the service/characteristic after you know that the link has been encrypted.
You can have a look at my example here on how to add a service/characteristic after connected: https://devzone.nordicsemi.com/support-private/support/290356#permalink=769225

RE: Write Characteristic only when Paired

Joao Dullius — Thu, 20 Oct 2022 14:58:45 GMT

Got it. I was able to achieve the required behavior by changing from BT_GATT_PERM_WRITE to BT_GATT_PERM_WRITE_AUTHEN.

Follow-up question:

- Can I make a characteristic only visible to paired devices?