static struct bt_uuid_128 uuidButtonService = BT_UUID_INIT_128(

        0xFB, 0x34, 0x9B, 0x5F, 0x80, 0x00, 0x00, 0x80,

        0x00, 0x02, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00);

 

static struct bt_uuid_128 uuidButtonStateCallStart = BT_UUID_INIT_128(

        0xFB, 0x34, 0x9B, 0x5F, 0x80, 0x00, 0x00, 0x80,

        0x00, 0x02, 0x00, 0x01, 0x02, 0x00, 0x00, 0x00);

 

static struct bt_uuid_128 uuidButtonStateCallStop = BT_UUID_INIT_128(

        0xFB, 0x34, 0x9B, 0x5F, 0x80, 0x00, 0x00, 0x80,

        0x00, 0x02, 0x00, 0x01, 0x03, 0x00, 0x00, 0x00);

 

BT_GATT_SERVICE_DEFINE(button_svc,

        BT_GATT_PRIMARY_SERVICE(&uuidButtonService),

        BT_GATT_CHARACTERISTIC(&uuidButtonStateCallStart, BT_GATT_CHRC_NOTIFY,

                               BT_GATT_PERM_NONE, NULL, NULL, NULL),

        BT_GATT_CCC(buttonstate_ccc_cfg_changed, BT_GATT_PERM_READ | BT_GATT_PERM_WRITE),

        BT_GATT_CHARACTERISTIC(&uuidButtonStateCallStop, BT_GATT_CHRC_NOTIFY,

                               BT_GATT_PERM_NONE, NULL, NULL, NULL),

        BT_GATT_CCC(buttonstate_ccc_cfg_changed, BT_GATT_PERM_READ | BT_GATT_PERM_WRITE)

);

 

void button_notify(bool value, uint8_t buttonNbr)

{

   printk("Button nbr %u - Notify value = %u\n", buttonNbr, value);

   onOffFlag = value;

 

   uint8_t index = 1;

   if (buttonNbr == 0)

   {

       index = 1;

   }

   else

   {

       index = 2;

   }

 

   printk("--->index is %u\n", index);

 

   bt_gatt_notify(NULL, &button_svc.attrs[index], &onOffFlag, sizeof(onOffFlag));

}

Nevertheless always the notification change of the first characteristic in the user defined service is trapped in the BT central application, despite the index value in button_svc.attrs changes between 1 and 2.

I see in my central output that the service and its characteristics are well discovered.
uuid service : 00000001-0100-0200-8000-00805f9b34fb
uuid char1 : 00000002-0100-0200-8000-00805f9b34fb
uuid char2 : 00000003-0100-0200-8000-00805f9b34fb

Any idea's what I'm doing wrong?
Thanks, 

Best regards,
Frank