Is the characteristic attribute handle freely configurable?

RE: Is the characteristic attribute handle freely configurable?

sdi_kei — Mon, 24 Jan 2022 11:51:22 GMT

Hello.

thank you. That information was very helpful.
If you have time, please answer another question. Thank you very much.

Best regards.

RE: Is the characteristic attribute handle freely configurable?

Susheel Nuguru — Mon, 24 Jan 2022 11:44:22 GMT

Yes, it is same as long as it is added to the attribute table in the same order .With respect to our softdevice, this handle is just the index of the attribute in the attribute table. So it remains same for sure as long as your device is up and running and it remains same for ever if you add the attributes in the same order when chip restarts.

RE: Is the characteristic attribute handle freely configurable?

sdi_kei — Mon, 24 Jan 2022 09:25:59 GMT

Hello.

thank you for your answer. I found that I couldn't set it freely.
It is said that it is automatically assigned, but is the handle value assigned to one characteristic always the same?

Best regards.

RE: Is the characteristic attribute handle freely configurable?

Susheel Nuguru — Mon, 24 Jan 2022 07:08:07 GMT

Attribute handles are set by the BLE stack (Softdevice in this case) when you add a characteristic using sd_ble_gatts_characteristic_add. You cannot se to any value,

RE: Is the characteristic attribute handle freely configurable?

Einar Thorsrud — Mon, 24 Jan 2022 06:57:56 GMT

Hi,

The handles are assigned automatically by the stack. There is no API for specifying a specific handle number.