Native Development

[jaschroe]

Hi Developers and Shahid,

I am following the JAM-21 PDF on using Bluetooth Low Energy. I am successfully receiving advertising callbacks and packets, and successfully parsed them following the Bluetooth 4.0 specification.

I am trying to use bt_gatt_connect_service(), but none of my bt_gatt_callbacks_t are invoked.

I am testing with a Polar H7 heart rate sensor. The "advertisement" message says it supports Service (16-bit UUID) 0x180D, but I call:

static bt_le_callbacks_t le_callbacks = { HRM_advertisement_cb };

static bt_gatt_callbacks_t gatt_callbacks = {
            HRM_service_connected_cb,
            HRM_service_disconnected_cb,
            HRM_service_updated_cb
    };


bt_le_init(&le_callbacks);
bt_gatt_init(&gatt_callbacks);

bt_gatt_connect_service("00:22:D0:00:21:C0", "0x180d", NULL, NULL, NULL");

 What am I doing wrong? I also don't have any luck with Service 0x180A (Device Information) or 0x10F (Battery Service).

Testing with BlackBerry DevAlpha B, OS 10.9.9.339. Compiled with BlackBerry 10 Native SDK 10.0.9.2318 on a Linux 64-bit host.

Thanks in advance!

 * Updated: (16-bit UDID, not 16-byte)

[robbieDubya]

What return codes are you getting from those calls?

[jaschroe]

EOK everywhere.

[robbieDubya]

Have you done a 

    bt_device_init( bt_controller_cb );

 I think it is necessary for any BT events in your app... (and you do say you're getting some..)

[jaschroe]

I will give it a try tonight. I didn't think it was necessary, as this is Bluetooth LE.

Thanks, Robbie!

[robbieDubya]

any luck?

[jaschroe]

That didn't help either, but it did point me in the right direction! The BB10 device has to be paired with the Bluetooth LE device, which I did in the Settings app. Then everything started to work correctly.

Thanks for the nudge in the right direction!