/**@brief Function for fetching the event handler provided by a registered application module.
*
* @param[in] srv_uuid UUID of the service.
*
* @retval evt_handler Event handler of the module, registered for the given service UUID.
* @retval NULL If no event handler is found.
*/
static ble_db_discovery_evt_handler_t registered_handler_get(const ble_uuid_t * const p_srv_uuid)
{
uint32_t i;
for (i = 0; i < m_num_of_handlers_reg; i++)
{
if (BLE_UUID_EQ(&(m_registered_handlers[i]), p_srv_uuid))
{
return (m_evt_handler);
}
}
return NULL;
}
/**@brief Function for handling the Characteristic Discovery Response event.
*
* @param[in] p_ias_c Immediate Alert Service client structure.
* @param[in] p_ble_evt Event received from the BLE stack.
*/
static void on_char_disc_resp(ble_ias_c_t * p_ias_c, const ble_evt_t * p_ble_evt)
{
ble_ias_c_evt_t evt;
if (p_ble_evt->evt.gattc_evt.gatt_status == BLE_GATT_STATUS_SUCCESS)
{
int i;
const ble_gattc_evt_char_disc_rsp_t * p_char_disc_rsp;
p_char_disc_rsp = &(p_ble_evt->evt.gattc_evt.params.char_disc_rsp);
// Iterate through the characteristics and find the correct one.
for (i = 0; i < p_char_disc_rsp->count; i++)
{
if (BLE_UUID_EQ(&m_alert_level_uuid, &(p_char_disc_rsp->chars[i].uuid)))
{
// The Alert Level characteristic in the Immediate Alert Service instance is found
// on peer. Check if it has the correct property 'Write without response' as per
// Section 3.3.1.1 in Bluetooth Specification Vol 3.
if (p_char_disc_rsp->chars[i].char_props.write_wo_resp)
{
// The Alert Level characteristic has the correct property.
p_ias_c->alert_level_handle = p_char_disc_rsp->chars[i].handle_value;
evt.evt_type = BLE_IAS_C_EVT_SRV_DISCOVERED;
p_ias_c->evt_handler(p_ias_c, &evt);
return;
}
else
{
// The property of Alert Level characteristic is invalid. Hence break out of the
// loop.
break;
}
}
}
}
// The Alert Level characteristic in Immediate Alert Service was not found at the peer. Notify
// the application using evt_handler.
evt.evt_type = BLE_IAS_C_EVT_SRV_NOT_FOUND;
p_ias_c->evt_handler(p_ias_c, &evt);
}
