void ancs_parse_get_attrs_response(ble_ancs_c_t * p_ancs,
const uint8_t * p_data_src,
const uint16_t hvx_data_len)
{
uint32_t index;
for (index = 0; index < hvx_data_len;)
{
switch (p_ancs->parse_info.parse_state)
{
case COMMAND_ID:
p_ancs->parse_info.parse_state = command_id_parse(p_ancs, p_data_src, &index);
break;
case NOTIF_UID:
p_ancs->parse_info.parse_state = notif_uid_parse(p_ancs, p_data_src, &index);
break;
case APP_ID:
p_ancs->parse_info.parse_state = app_id_parse(p_ancs, p_data_src, &index);
break;
case ATTR_ID:
p_ancs->parse_info.parse_state = attr_id_parse(p_ancs, p_data_src, &index);
break;
case ATTR_LEN1:
p_ancs->parse_info.parse_state = attr_len1_parse(p_ancs, p_data_src, &index);
break;
case ATTR_LEN2:
p_ancs->parse_info.parse_state = attr_len2_parse(p_ancs, p_data_src, &index);
break;
case ATTR_DATA:
p_ancs->parse_info.parse_state = attr_data_parse(p_ancs, p_data_src, &index);
break;
case ATTR_SKIP:
p_ancs->parse_info.parse_state = attr_skip(p_ancs, p_data_src, &index);
break;
case DONE:
NRF_LOG_DEBUG("Parse state: Done ");
index = hvx_data_len;
break;
default:
// Default case will never trigger intentionally. Go to the DONE state to minimize the consequences.
p_ancs->parse_info.parse_state = DONE;
break;
}
}
}
/**@brief Function for parsing received notification attribute response data.
*
* @details The data that comes from the Notification Provider can be much longer than what
* would fit in a single GATTC notification. Therefore, this function relies on a
* state-oriented switch case.
* UID and command ID will be received only once at the beginning of the first
* GATTC notification of a new attribute request for a given iOS notification.
* After this, we can loop several ATTR_ID > LENGTH > DATA > ATTR_ID > LENGTH > DATA until
* we have received all attributes we wanted as a Notification Consumer.
* The Notification Provider can also simply stop sending attributes.
*
* |1 Byte | 4 Bytes |1 Byte |2 Bytes | X Bytes |1 Bytes| 2 Bytes| X Bytes
* +--------+-------------+-------+--------+- - - - - - - - - - +-------+--------+- - - - - - -
* | CMD_ID | NOTIF_UID |ATTR_ID| LENGTH | DATA |ATTR_ID| LENGTH | DATA
* +--------+-------------+-------+--------+- - - - - - - - - - +-------+--------+- - - - - - -
*
* @param[in] p_ancs Pointer to an ANCS instance to which the event belongs.
* @param[in] p_data_src Pointer to data that was received from the Notification Provider.
* @param[in] hvx_len Length of the data that was received from the Notification Provider.
*/
static void parse_get_notif_attrs_response(ble_ancs_c_t * p_ancs,
const uint8_t * p_data_src,
const uint16_t hvx_data_len)
{
uint32_t index;
for (index = 0; index < hvx_data_len;)
{
switch (p_ancs->parse_state)
{
case COMMAND_ID_AND_NOTIF_UID:
p_ancs->parse_state = command_id_and_notif_parse(p_ancs, p_data_src, &index);
break;
case ATTR_ID:
p_ancs->parse_state = attr_id_parse(p_ancs, p_data_src, &index);
break;
case ATTR_LEN1:
p_ancs->parse_state = attr_len1_parse(p_ancs, p_data_src, &index);
break;
case ATTR_LEN2:
p_ancs->parse_state = attr_len2_parse(p_ancs, p_data_src, &index);
break;
case ATTR_DATA:
p_ancs->parse_state = attr_data_parse(p_ancs, p_data_src, &index);
break;
case DONE:
NRF_LOG_INFO("State: Done \r\n");
index = hvx_data_len;
break;
default:
// Default case will never trigger intentionally. Go to the DONE state to minimize the consequences.
p_ancs->parse_state = DONE;
break;
}
}
}