I'm studing the project of ble_app_gls/PCA10040/SDK11.0/ ,I have got some questions about the RACP indication pending and retransmittion mechnism. In this project(File ble_gls.c, Line 387), two conditions decide whether to set(STATE_RACP_RESPONSE_PENDING) or not;
- One condition is on err_code returned from sd_ble_gatts_hvx(...);When error_code==BLE_ERROR_NO_TX_PACKETS, set(STATE_RACP_RESPONSE_PENDING). But the SDK API reference said "a notification will consume an application buffer, and will therefore generate a BLE_EVT_TX_COMPLETE event when the packet has been transmitted. An indication on the other hand will use the standard server internal buffer and thus will only generate a BLE_GATTS_EVT_HVC event as soon as the confirmation has been received from the peer...BLE_ERROR_NO_TX_PACKETS applies only to notification... ". So in racp_send() function sd_ble_gatts_hvx() can't return a BLE_ERROR_NO_TX_PACKETS, and can't set (STATE_RACP_RESPONSE_PENDING) neither. Am I right?
2)Another condition is if ( (m_gls_state != STATE_RACP_RESPONSE_PENDING) && (m_racp_proc_records_reported_since_txcomplete > 0) ) then set(STATE_RACP_RESPONSE_PENDING). m_racp_proc_records_reported_since_txcomplete is increased when a measure result notification is queued. Since indication dosn't use the application buffer, why here pend an indication, it has no need to wait an application buffer.
