Change advertising data

RE: Change advertising data

run_ar — Fri, 24 Mar 2017 12:41:40 GMT

Not sure how this is related to your original question. But calling sd_ble_gatts_sys_attr_set with 'null' as parameter initializes the attribute. The command is also used to restore the system attributes (e.g. cccd states) when reconnecting to a known/bonded device.

RE: Change advertising data

oneguy — Fri, 17 Mar 2017 15:06:50 GMT

Ok we found the answer:

We have done what was suggested in devzone.nordicsemi.com/.../ (i.e. added code for the BLE_GATTS_EVT_SYS_ATTR_MISSING event)

2 questions remain:

what exactly does sd_ble_gatts_sys_attr_set do, seeing that all parameters are 0?
why does my code work with Android/iOS apps, but not under windows?

Thank you for your help so far.

RE: Change advertising data

oneguy — Wed, 22 Feb 2017 09:55:52 GMT

Thank you jing

RE: Change advertising data

jing — Wed, 22 Feb 2017 07:56:23 GMT

You can call sd_ble_gap_adv_data_set() to replace or clear your advertising packet and/or scan response packet even while advertising. But unlike ble_advertising_init(), this API expects raw data from you.

jing