public void Decode(ref BACNET_ADDRESS src, ref byte[] apdu, UInt16 apdu_len, int pos = 0) { BACNET_CONFIRMED_SERVICE_DATA service_data = new BACNET_CONFIRMED_SERVICE_DATA(); BACNET_CONFIRMED_SERVICE_ACK_DATA service_ack_data = new BACNET_CONFIRMED_SERVICE_ACK_DATA(); Byte invoke_id = 0; Byte service_choice = 0; Byte[] service_request; UInt16 service_request_len = 0; int len = 0; /* counts where we are in PDU */ Byte tag_number = 0; UInt32 len_value = 0; UInt32 error_code = 0; UInt32 error_class = 0; Byte reason = 0; Boolean server = false; //服务选择 switch (apdu[pos] & 0xF0) { case (Byte)BACNET_PDU_TYPE.PDU_TYPE_UNCONFIRMED_SERVICE_REQUEST: { service_choice = apdu[pos + 1]; service_request_len = (ushort)(apdu_len - 2); service_request = new Byte[service_request_len]; Array.Copy(apdu, pos + 2, service_request, 0, service_request_len); switch (service_choice) { case (Byte)BACNET_UNCONFIRMED_SERVICE.SERVICE_UNCONFIRMED_COV_NOTIFICATION: { // UnconFirmCovService un_cov = new UnconFirmCovService(); // un_cov.Unconfirm_Cov_Handler(ref service_request,(ushort) service_request_len,ref src); break; } case (Byte)BACNET_UNCONFIRMED_SERVICE.SERVICE_UNCONFIRMED_EVENT_NOTIFICATION: { UnconfirmedEventNotificationService un_event_not = new UnconfirmedEventNotificationService(); un_event_not.Uevent_Notify_Handler(ref service_request, (ushort)service_request_len, ref src); break; } } break; } case (Byte)BACNET_PDU_TYPE.PDU_TYPE_CONFIRMED_SERVICE_REQUEST: { len = (int)Decode_confirmed_Service_Request(ref apdu, apdu_len, ref service_data, ref service_choice, ref service_request_len, pos); service_request = new Byte[service_request_len]; Array.Copy(apdu, pos + len, service_request, 0, service_request_len); switch (service_choice) { case (Byte)BACNET_CONFIRMED_SERVICE.SERVICE_CONFIRMED_READ_PROPERTY: { BACnet_Read_Property_Data data = new BACnet_Read_Property_Data(); ReadPropertyService rp_service = new ReadPropertyService(); rp_service.Read_Property_Handler(ref service_request, service_request_len, ref src, ref service_data); break; } case (Byte)BACNET_CONFIRMED_SERVICE.SERVICE_CONFIRMED_SUBSCRIBE_COV: { CovSubscribeService cov_service = new CovSubscribeService(); cov_service.Cov_Subscribe_Handler(ref service_request, service_request_len, ref src, ref service_data); break; } case (Byte)BACNET_CONFIRMED_SERVICE.SERVICE_CONFIRMED_ACKNOWLEDGE_ALARM: { AcknowledgeAlarmService ack_al = new AcknowledgeAlarmService(); ack_al.Acknowledge_Alarm_Handler(ref service_request, service_request_len, ref src, ref service_data); break; } } break; } case (Byte)BACNET_PDU_TYPE.PDU_TYPE_SIMPLE_ACK: { invoke_id = apdu[pos + 1]; service_choice = apdu[pos + 2]; TsmProcessor.free_invoke_id(invoke_id); break; } case (Byte)BACNET_PDU_TYPE.PDU_TYPE_COMPLEX_ACK: { if ((apdu[pos + 0] & BacnetConst.BIT3) != 0) { service_ack_data.segmented_message = true; } if ((apdu[pos + 0] & BacnetConst.BIT2) != 0) { service_ack_data.more_follows = true; } invoke_id = service_ack_data.invoke_id = apdu[pos + 1]; len = 2; if (service_ack_data.segmented_message) { service_ack_data.sequence_number = apdu[pos + len++]; service_ack_data.proposed_window_number = apdu[pos + len++]; } service_choice = apdu[pos + len++]; service_request_len = (UInt16)(apdu_len - len); service_request = new Byte[service_request_len]; Array.Copy(apdu, pos + len, service_request, 0, service_request_len); switch (service_choice) { case (Byte)BACNET_CONFIRMED_SERVICE.SERVICE_CONFIRMED_READ_PROPERTY: ReadPropertyService rp_ack = new ReadPropertyService(); rp_ack.Read_Property_Ack_Handler(ref service_request, service_request_len, ref src, ref service_ack_data); break; } TsmProcessor.free_invoke_id(invoke_id); break; } case (Byte)BACNET_PDU_TYPE.PDU_TYPE_ERROR: { break; } case (Byte)BACNET_PDU_TYPE.PDU_TYPE_REJECT: { break; } case (Byte)BACNET_PDU_TYPE.PDU_TYPE_ABORT: { break; } } }
public void Read_Property_Ack_Handler(ref Byte[] request, UInt16 request_len, ref BACNET_ADDRESS src, ref BACNET_CONFIRMED_SERVICE_ACK_DATA service_data) { int len = 0; BACnet_Read_Property_Data data = new BACnet_Read_Property_Data(); len = Decode_Ack_Service_Request(ref request, request_len, ref data); BACNET_APPLICATION_DATA_VALUE value = new BACNET_APPLICATION_DATA_VALUE(); BasicalProcessor.Decode_Application_Data(ref request, (uint)data.application_data_len, ref value, data.application_data_pos); MessageBox.Show(value.value.Unsigned_Int.ToString(), data.object_property.ToString()); // if (len > 0) // rp_ack_print_data(ref data); //此处添加对读取到的data的处理 }