コード例 #1
0
        private int SendIMessage(BufferFrame asdu)
        {
            byte[] buffer = asdu.GetBuffer();

            int msgSize = asdu.GetMsgSize();              /* ASDU size + ACPI size */

            buffer [0] = 0x68;

            /* set size field */
            buffer [1] = (byte)(msgSize - 2);

            buffer [2] = (byte)((sendCount % 128) * 2);
            buffer [3] = (byte)(sendCount / 128);

            buffer [4] = (byte)((receiveCount % 128) * 2);
            buffer [5] = (byte)(receiveCount / 128);

            try {
                lock (socketStream) {
                    socketStream.Write(buffer, 0, msgSize);
                    DebugLog("SEND I (size = " + msgSize + ") : " + BitConverter.ToString(buffer, 0, msgSize));
                    sendCount = (sendCount + 1) % 32768;
                    unconfirmedReceivedIMessages = 0;
                    timeoutT2Triggered           = false;
                }
            }
            catch (System.IO.IOException) {
                // socket error --> close connection
                running = false;
            }

            return(sendCount);
        }
コード例 #2
0
        public byte[] AsByteArray()
        {
            int expectedSize = parameters.MaxAsduLength - spaceLeft;

            BufferFrame frame = new BufferFrame(new byte[expectedSize], 0);

            Encode(frame, parameters);

            if (frame.GetMsgSize() == expectedSize)
            {
                return(frame.GetBuffer());
            }
            else
            {
                return(null);
            }
        }
コード例 #3
0
        internal void SendVariableLengthFrameSecondary(FunctionCodeSecondary fc, int address, bool acd, bool dfc, BufferFrame frame)
        {
            buffer [0] = 0x68;             /* START */
            buffer [3] = 0x68;             /* START */

            byte c = (byte)((int)fc & 0x1f);

            if (linkLayerMode == LinkLayerMode.BALANCED)
            {
                if (dir)
                {
                    c += 0x80;
                }
            }

            if (acd)
            {
                c += 0x20;
            }

            if (dfc)
            {
                c += 0x10;
            }

            buffer [4] = c;

            int bufPos = 5;

            if (linkLayerParameters.AddressLength > 0)
            {
                buffer [bufPos++] = (byte)(address % 0x100);

                if (linkLayerParameters.AddressLength > 1)
                {
                    buffer [bufPos++] = (byte)((address / 0x100) % 0x100);
                }
            }

            byte[] userData       = frame.GetBuffer();
            int    userDataLength = frame.GetMsgSize();

            int l = 1 + linkLayerParameters.AddressLength + userDataLength;

            if (l > 255)
            {
                return;
            }

            buffer [1] = (byte)l;
            buffer [2] = (byte)l;

            for (int i = 0; i < userDataLength; i++)
            {
                buffer [bufPos++] = userData[i];
            }

            byte checksum = 0;

            for (int i = 4; i < bufPos; i++)
            {
                checksum += buffer[i];
            }

            buffer [bufPos++] = checksum;

            buffer [bufPos++] = 0x16;             /* END */

            if (sentRawMessageHandler != null)
            {
                sentRawMessageHandler(sentRawMessageHandlerParameter, buffer, bufPos);
            }

            transceiver.SendMessage(buffer, bufPos);
        }
コード例 #4
0
        public void SendVariableLengthFramePrimary(FunctionCodePrimary fc, int address, bool fcb, bool fcv, BufferFrame frame)
        {
            buffer [0] = 0x68;             /* START */
            buffer [3] = 0x68;             /* START */

            byte c = (byte)fc;

            if (dir)
            {
                c += 0x80;
            }

            c += 0x40;             // PRM = 1;

            if (fcv)
            {
                c += 0x10;
            }

            if (fcb)
            {
                c += 0x20;
            }

            buffer [4] = c;

            int bufPos = 5;

            if (linkLayerParameters.AddressLength > 0)
            {
                buffer [bufPos++] = (byte)(address % 0x100);

                if (linkLayerParameters.AddressLength > 1)
                {
                    buffer [bufPos++] = (byte)((address / 0x100) % 0x100);
                }
            }

            byte[] userData       = frame.GetBuffer();
            int    userDataLength = frame.GetMsgSize();

            for (int i = 0; i < userDataLength; i++)
            {
                buffer [bufPos++] = userData[i];
            }

            int l = 1 + linkLayerParameters.AddressLength + frame.GetMsgSize();

            if (l > 255)
            {
                return;
            }

            buffer [1] = (byte)l;
            buffer [2] = (byte)l;

            byte checksum = 0;

            for (int i = 4; i < bufPos; i++)
            {
                checksum += buffer[i];
            }

            buffer [bufPos++] = checksum;

            buffer [bufPos++] = 0x16;             /* END */

            if (sentRawMessageHandler != null)
            {
                sentRawMessageHandler(sentRawMessageHandlerParameter, buffer, bufPos);
            }

            transceiver.SendMessage(buffer, bufPos);
        }