How to retrieve the handle for a characteristic value by UUID?

RE: How to retrieve the handle for a characteristic value by UUID?

Brook Gebremedhin — Thu, 05 May 2016 18:11:12 GMT

@puz_md

i was not able to do read with uint32_t sd_ble_gattc_read( uint16_t conn_handle, uint16_t handle, uint16_t offset) how do i set this up once i have the conn_handle of my char , how do i read the value could you provide me a sudo code ?

thanks

RE: How to retrieve the handle for a characteristic value by UUID?

Marius Heil — Sun, 08 Feb 2015 10:58:00 GMT

Thanks for the info. I have decided to go the service enumeration and characteristic enumeration route instead because I thought, getting the characteristic by UUID and than using this handle would not work after reading that question. I might change this in the future, but for now I'm sticking with enumeration.

RE: How to retrieve the handle for a characteristic value by UUID?

Petter Myhre — Sat, 07 Feb 2015 11:54:38 GMT

@Marius Please vote on the question if you are interested in it.

RE: How to retrieve the handle for a characteristic value by UUID?

Petter Myhre — Sat, 07 Feb 2015 11:45:38 GMT

Sorry I misunderstood you earlier.

I haven't tried your strategy before, but I have now, and it seems to be working. I used a vendor specific UUID and a characterisitic value with 20 bytes. I get the first 19 bytes with sd_ble_gattc_char_value_by_uuid_read(), then I use sd_ble_gattc_read() with an offset of 19 to get the last byte.

I'm using SDK 7.2.0 with S110 7.1.0 and S120 1.0.0.

RE: How to retrieve the handle for a characteristic value by UUID?

Marius Heil — Mon, 02 Feb 2015 15:13:29 GMT

I am very much interested in that as well!