RE: How do I advertise both manufacturer and custom service?

helsing — Fri, 09 Aug 2024 13:31:58 GMT

Hi Leo, sorry for the delay.

You can advertise both manufacturer data and custom service data at the same time by including both in your `bt_data` array. However, you need to be aware of the maximum advertisement data size. The total size of advertisement data cannot exceed 31 bytes due to the Bluetooth specification. If you have more data, you may need to use the scan response to fit the additional data.

static const struct bt_data ad[] = {

    BT_DATA_BYTES(BT_DATA_FLAGS, BT_LE_AD_NO_BREDR),

    BT_DATA_BYTES(BT_DATA_UUID16_ALL, 0xaa, 0xfe),

    BT_DATA_BYTES(BT_DATA_SVC_DATA16,

              0xaa, 0xfe, /* Eddystone UUID */

              0x10, /* Eddystone-URL frame type */

              0x00, /* Calibrated Tx power at 0m */

              0x00, /* URL Scheme Prefix http://www. */

              'z', 'e', 'p', 'h', 'y', 'r',

              'p', 'r', 'o', 'j', 'e', 'c', 't',

              0x08) /* .org */

};

/* Set Scan Response data */

static const struct bt_data sd[] = {

    BT_DATA(BT_DATA_NAME_COMPLETE, DEVICE_NAME, DEVICE_NAME_LEN),

};

err = bt_le_adv_start(BT_LE_ADV_NCONN_IDENTITY, ad, ARRAY_SIZE(ad),

                  sd, ARRAY_SIZE(sd));

    if (err) {

        printk("Advertising failed to start (err %d)\n", err);

        return;

    }

In this example, ad is the advertising data and sd is the scan response data. bt_le_adv_start starts advertising with both the advertising data and the scan response data.

RE: How do I advertise both manufacturer and custom service?

helsing — Mon, 05 Aug 2024 12:58:30 GMT

Hi Leo,

I have started looking into this and will get back to you.