Changing characteristic security mode on the fly?

[Chris]

Is it possible to change a characteristic's security mode after it's already been added with sd_ble_gatts_characteristic_add()?

I'd like to be able to switch back and forth between "BLE_GAP_CONN_SEC_MODE_SET_OPEN" and "BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM" I.e. one that requires bonding and one that does not.

Thanks.

[Hung Bui]

Hi Chris,

No, it's not possible.

If you want to change the permission of a characteristic (or modify any properties), you would need to disable the softdevice and reinitialize the whole attribute table (all services and characteristics)

[Chris]

That's what I thought. I really only need to do it once and will handle it by resetting the entire device. Thanks.