I can't search 128bits UUID service

RE: I can't search 128bits UUID service

Songplus — Thu, 24 Mar 2016 05:16:07 GMT

Hi Hung,thank you for your advice.

RE: I can't search 128bits UUID service

Hung Bui — Fri, 18 Mar 2016 10:22:58 GMT

Hi Songplus,

Have you tested the ble_app_ancs_c example ?

Note that when you called sd_ble_uuid_vs_add() to add a base UUID in the attribute UUID base table, you would need to use the p_uuid_type returned from this API call. This type is position of the UUID base in the table. And when you do service discovery for a particular service with 128 bit, you have to use this p_uuid_type in-accordance with the 16bit short UUID, in this case 0xF431. With just 0xF431, the softdevice won't be able to know which 128bit UUID base you are aiming for.

RE: I can't search 128bits UUID service

Songplus — Thu, 17 Mar 2016 02:39:39 GMT

Hi,I have snipffed the link,as showing in my answer.

RE: I can't search 128bits UUID service

FormerMember — Tue, 15 Mar 2016 12:17:33 GMT

Okay, I see.

You can use the sniffer to sniff an encrypted link if the sniffer is present during the encryption key exchange. Could you do that, and then upload the sniffer trace here?

RE: I can't search 128bits UUID service

Songplus — Tue, 15 Mar 2016 03:01:50 GMT

Hi Kristin,there is a text lengh limit in comment,please see my answer,thanks.

RE: I can't search 128bits UUID service

Songplus — Tue, 15 Mar 2016 02:53:49 GMT

Hi Kristin ,thank you for your answer.I have a Dongle ,but it can only capture the peripheral advertising datas.After the cental bonding the peripheral ,they work under encrypted link ,so Dongle can't trace what they are doing. My production are developed base on S110 V.6.0.0,Now I want to add GATTC module to get the iphone message throught Apple's ANCS protocol. The ANCS runs as a GATT server, my production runs as a GATT client. The ANCS service UUID is :7905F431-B5CE-4E99-A40F-4B1E122D00D0 .After I adding 128bits service UUID by using sd_ble_uuid_vs_add() ,I call the sd_ble_gattc_primary_services_discover() function used short UUID 0xF431,the SD return Gatt_status==BLE_GATT_STATUS_ATTERR_ATTRIBUTE_NOT_FOUND.Does it mean that the service isn't found by this short UUID? If I search the 0x1800 service ,there is not problem.So I don't know which step I miss. Could you debug this base on S110 V.6.0.0 ? I had try the ANCS example in SDK 8.1 with S110 v.8.0.0,but it can't work correctly.After Sending_security_request() , the device goes to restart.I want to develop base on S110 V.6.0.0 not S110 v.8.0.0,beacause my production are being saled.Thanks.

Could you analyse the problem for me ?The Control Opcode:LL_VErSION_IND means that the cental have bonded peripheral ? I sniffed another device,which can access the ANCS successfully.The sniff result as follow

They look the same :-(

RE: I can't search 128bits UUID service

Songplus — Mon, 14 Mar 2016 01:54:34 GMT

Hi, I have added the BLE_GATTS_EVT_SYS_ATTR_MISSING case in on_ble_evt() :

    case BLE_GATTS_EVT_SYS_ATTR_MISSING://attr missing 
        err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0); 
        APP_ERROR_CHECK(err_code); 
        break;

But when I debug it,the program never goes into this case,and the event_discover_rsp() go into: p_ble_evt->evt.gattc_evt.gatt_status=BLE_GATT_STATUS_ATTERR_ATTRIBUTE_NOT_FOUND. My device have been bonding to the iphone 6s pluse.I want to know how to search a 128bits UUID service,whether S110-6.0.0 version supports accessing a 128bits UUID service or not? Thank you for your reply.

RE: I can't search 128bits UUID service

FormerMember — Fri, 11 Mar 2016 10:41:56 GMT

The problem can be that the event BLE_GATTS_EVT_SYS_ATTR_MISSING is not being handled. If the application doesn't support boding, it can for example be handled the following way in on_ble_evt(..) in main.c:

case BLE_GATTS_EVT_SYS_ATTR_MISSING:
        err_code = sd_ble_gatts_sys_attr_set(m_peripheral_conn_handle, NULL, 0);
        APP_ERROR_CHECK(err_code);
        break;

Update 14.03.16: After a little thinking I see that adding BLE_GATTS_EVT_SYS_ATTR_MISSING will not help, because it requires the device to be a GATT server and not a GATT client.

Could you try the ANCS example in SDK 8.1 with S110 v.8.0.0? Or SDK 6.1.0 and S110 v.7.3.0?

Do you have a nRF51-DK or a nRF51-Dongle? If so, could you use the sniffer to track what is being transferred over the air? And upload the sniffer trace here?

The sniffer should be used with Wireshark, and it works best with version 1.10, not one of the newer versions, this answer links to older version of wireshark.

What do you mean by access the 128 bit UUID? This thread explains storing of a UUID added using sd_ble_uuid_vs_add(..). S110 v. 6.0.0 does support adding a custom UUID.