UUID compare in CCC function (Zephyr)

[Christoffer Brask]

Hello,

I have created different characteristics with the CCC macro (BT_GATT_CCC) that share the same "Configuration changed callback" function.

Inside the function below, i want to compare and find which uuid has enabled notification from client.

static void cccCfgChanged(const struct bt_gatt_attr *attr, uint16_t value)

{

    char str[BT_UUID_STR_LEN];

    bt_uuid_to_str(attr->uuid, str, sizeof(str));

}

The function bt_uuid_to_str just give junk in the char array, does attr-uuid not contain the uuid of the characteristic which has enabled notifications?

I have also tried  bt_uuid_cmp without any luck.

[Christoffer Brask]

Strange thing is that type = 0 which is BT_UUID_TYPE_16 and not 2 = BT_UUID_TYPE_128

[run_ar]

Hi,
Sorry for the late reply. I took a closer look at one of our example applications, i.e. the RCSC example. and it seems you should register the CCCD with different handles like this:
BT_GATT_CCC(rsc_meas_ccc_cfg_changed, BT_GATT_PERM_READ | BT_GATT_PERM_WRITE),
BT_GATT_CCC(ctrl_point_ccc_cfg_changed, BT_GATT_PERM_READ | BT_GATT_PERM_WRITE),