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
}
