Read a block of data. Specific properties are starting address and data count. This packet type is usually created by the tester and sent to the car control unit. Always consists of 11 bytes: 5 header + 1 padding + 3 address + 1 count + 1 checksum byte.
Inheritance: Ssm2Packet
Esempio n. 1
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        public void ConstructAndChangeProps1()
        {
            byte[] packetData = TestPacket1;

            Ssm2ReadBlockRequest p = new Ssm2ReadBlockRequest();

            p.Source      = Ssm2Device.DiagnosticToolF0;
            p.Destination = Ssm2Device.Engine10;
            p.Address     = 0x200000;
            p.DataCount   = 128;

            // should be ok after setting Data but don't depend on it!
            Assert.AreEqual(packetData.Length, p.Size, "Size before Construct");

            p.Finish();

            AssertData1(p);

            // changing some properties now

            p.DataCount = 129;
            // needed to calc new checksum
            p.Finish();

            // check
            Assert.AreEqual(packetData.Length, p.Size, "Size2");
            Assert.AreEqual(true, p.Check(), "Check2()");
            Assert.AreEqual(Ssm2Device.Engine10, p.Destination, "Destination2");
            Assert.AreEqual(Ssm2Device.DiagnosticToolF0, p.Source, "Source2");
            Assert.AreEqual(Ssm2Command.ReadBlockRequestA0, p.Command, "Command2");
            Assert.AreEqual(0x200000, p.Address, "Address2");
            Assert.AreEqual(129, p.DataCount, "DataCount2");
        }
Esempio n. 2
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        public void ConstructAndChangeProps1()
        {
            byte[] packetData = TestPacket1;

            Ssm2ReadBlockRequest p = new Ssm2ReadBlockRequest ();
            p.Source = Ssm2Device.DiagnosticToolF0;
            p.Destination = Ssm2Device.Engine10;
            p.Address = 0x200000;
            p.DataCount = 128;

            // should be ok after setting Data but don't depend on it!
            Assert.AreEqual (packetData.Length, p.Size, "Size before Construct");

            p.Finish ();

            AssertData1 (p);

            // changing some properties now

            p.DataCount = 129;
            // needed to calc new checksum
            p.Finish ();

            // check
            Assert.AreEqual (packetData.Length, p.Size, "Size2");
            Assert.AreEqual (true, p.Check (), "Check2()");
            Assert.AreEqual (Ssm2Device.Engine10, p.Destination, "Destination2");
            Assert.AreEqual (Ssm2Device.DiagnosticToolF0, p.Source, "Source2");
            Assert.AreEqual (Ssm2Command.ReadBlockRequestA0, p.Command, "Command2");
            Assert.AreEqual (0x200000, p.Address, "Address2");
            Assert.AreEqual (129, p.DataCount, "DataCount2");
        }
Esempio n. 3
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        public void Parse1()
        {
            byte[] packetData      = TestPacket1;
            Ssm2ReadBlockRequest p = new Ssm2ReadBlockRequest(packetData);

            p.FromBytes(packetData);

            AssertData1(p);
        }
Esempio n. 4
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        /// <summary>
        /// Returns a specific Ssm2Packet type based on given content.
        /// Does not validate the packet, so manually call the Check method afterwards!
        /// </summary>
        /// <param name="bytes">
        /// A <see cref="System.Byte[]"/> containing the packet.
        /// The packet must start at index 0 though the array may be larger than needed.
        /// </param>
        /// <returns>
        /// A <see cref="Ssm2Packet"/> subclass or null if the packet type could not be recognized.
        /// </returns>
        /// <exception cref="ArgumentNullException"></exception>
        /// <exception cref="ArgumentOutOfRangeException"></exception>
        public static Ssm2Packet NewFromBytes(byte[] bytes)
        {
            if (bytes == null)
            {
                throw new ArgumentNullException();
            }
            // check generic minimum size in order to get command byte
            if (bytes.Length < PacketSizeMin)
            {
                throw new ArgumentOutOfRangeException("bytes.Length < Minimum (6)");
            }

            Ssm2Packet p;

            // Read type directly from command byte (5th byte).
            // Each derived class constructor checks its requirements.
            switch ((Ssm2Command)bytes[(int)Ssm2PacketIndex.Command])
            {
            case Ssm2Command.ReadAddressesRequestA8:
                p = new Ssm2ReadAddressesRequest(bytes);
                break;

            case Ssm2Command.ReadAddressesResponseE8:
                p = new Ssm2ReadAddressesResponse(bytes);
                break;

            case Ssm2Command.WriteAddressRequestB8:
                p = new Ssm2WriteAddressRequest(bytes);
                break;

            case Ssm2Command.WriteAddressResponseF8:
                p = new Ssm2WriteAddressResponse(bytes);
                break;

            case Ssm2Command.InitRequestBF:
                p = new Ssm2InitRequest(bytes);
                break;

            case Ssm2Command.InitResponseFF:
                p = new Ssm2InitResponse(bytes);
                break;

            case Ssm2Command.ReadBlockRequestA0:
                p = new Ssm2ReadBlockRequest(bytes);
                break;

            case Ssm2Command.ReadBlockResponseE0:
                p = new Ssm2ReadBlockResponse(bytes);
                break;

            default:
                return(null);
            }
            p.FromBytes(bytes);
            return(p);
        }
Esempio n. 5
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        static void AssertData1(Ssm2ReadBlockRequest p)
        {
            byte[] packetData = TestPacket1;

            Assert.AreEqual(packetData.Length, p.Size, "Size");
            Assert.AreEqual(true, p.Check(), "Check()");

            Assert.AreEqual(Ssm2Device.Engine10, p.Destination, "Destination");
            Assert.AreEqual(Ssm2Device.DiagnosticToolF0, p.Source, "Source");
            Assert.AreEqual(Ssm2Command.ReadBlockRequestA0, p.Command, "Command");

            Assert.AreEqual(0x200000, p.Address, "Address");
            Assert.AreEqual(128, p.DataCount, "Data");

            byte[] bytes = p.ToBytesCopy();
            for (int i = 0; i < packetData.Length; i++)
            {
                Assert.AreEqual(packetData[i], bytes[i], "bytes[i]");
            }
        }
Esempio n. 6
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        public void ConstructAndChangeProps2()
        {
            Ssm2ReadBlockRequest p = new Ssm2ReadBlockRequest ();
            p.Source = Ssm2Device.DiagnosticToolF0;
            p.Destination = Ssm2Device.Engine10;
            p.Address = 0x123456;
            p.DataCount = 1;

            p.Finish ();

            Assert.AreEqual (11, p.Size, "Size");
            Assert.AreEqual (true, p.Check (), "Check()");

            Assert.AreEqual (Ssm2Device.DiagnosticToolF0, p.Source, "Source");
            Assert.AreEqual (Ssm2Device.Engine10, p.Destination, "Destination");

            Assert.AreEqual (Ssm2Command.ReadBlockRequestA0, p.Command, "Command");

            Assert.AreEqual (0x123456, p.Address, "Address");
            Assert.AreEqual (1, p.DataCount, "DataCount");
        }
Esempio n. 7
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        public void ConstructAndChangeProps2()
        {
            Ssm2ReadBlockRequest p = new Ssm2ReadBlockRequest();

            p.Source      = Ssm2Device.DiagnosticToolF0;
            p.Destination = Ssm2Device.Engine10;
            p.Address     = 0x123456;
            p.DataCount   = 1;

            p.Finish();

            Assert.AreEqual(11, p.Size, "Size");
            Assert.AreEqual(true, p.Check(), "Check()");

            Assert.AreEqual(Ssm2Device.DiagnosticToolF0, p.Source, "Source");
            Assert.AreEqual(Ssm2Device.Engine10, p.Destination, "Destination");

            Assert.AreEqual(Ssm2Command.ReadBlockRequestA0, p.Command, "Command");

            Assert.AreEqual(0x123456, p.Address, "Address");
            Assert.AreEqual(1, p.DataCount, "DataCount");
        }
Esempio n. 8
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        static void AssertData1(Ssm2ReadBlockRequest p)
        {
            byte[] packetData = TestPacket1;

            Assert.AreEqual (packetData.Length, p.Size, "Size");
            Assert.AreEqual (true, p.Check (), "Check()");

            Assert.AreEqual (Ssm2Device.Engine10, p.Destination, "Destination");
            Assert.AreEqual (Ssm2Device.DiagnosticToolF0, p.Source, "Source");
            Assert.AreEqual (Ssm2Command.ReadBlockRequestA0, p.Command, "Command");

            Assert.AreEqual (0x200000, p.Address, "Address");
            Assert.AreEqual (128, p.DataCount, "Data");

            byte[] bytes = p.ToBytesCopy ();
            for (int i = 0; i < packetData.Length; i++) {
                Assert.AreEqual (packetData[i], bytes[i], "bytes[i]");
            }
        }
Esempio n. 9
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        public void Parse1()
        {
            byte[] packetData = TestPacket1;
            Ssm2ReadBlockRequest p = new Ssm2ReadBlockRequest (packetData);
            p.FromBytes (packetData);

            AssertData1 (p);
        }
Esempio n. 10
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        /// <summary>
        /// Returns a specific Ssm2Packet type based on given content.
        /// Does not validate the packet, so manually call the Check method afterwards!
        /// </summary>
        /// <param name="bytes">
        /// A <see cref="System.Byte[]"/> containing the packet.
        /// The packet must start at index 0 though the array may be larger than needed.
        /// </param>
        /// <returns>
        /// A <see cref="Ssm2Packet"/> subclass or null if the packet type could not be recognized.
        /// </returns>
        /// <exception cref="ArgumentNullException"></exception>
        /// <exception cref="ArgumentOutOfRangeException"></exception>
        public static Ssm2Packet NewFromBytes(byte[] bytes)
        {
            if (bytes == null)
                throw new ArgumentNullException ();
            // check generic minimum size in order to get command byte
            if (bytes.Length < PacketSizeMin)
                throw new ArgumentOutOfRangeException ("bytes.Length < Minimum (6)");

            Ssm2Packet p;
            // Read type directly from command byte (5th byte).
            // Each derived class constructor checks its requirements.
            switch ((Ssm2Command)bytes[(int)Ssm2PacketIndex.Command]) {
            case Ssm2Command.ReadAddressesRequestA8:
                p = new Ssm2ReadAddressesRequest (bytes);
                break;
            case Ssm2Command.ReadAddressesResponseE8:
                p = new Ssm2ReadAddressesResponse (bytes);
                break;
            case Ssm2Command.WriteAddressRequestB8:
                p = new Ssm2WriteAddressRequest (bytes);
                break;
            case Ssm2Command.WriteAddressResponseF8:
                p = new Ssm2WriteAddressResponse (bytes);
                break;
            case Ssm2Command.InitRequestBF:
                p = new Ssm2InitRequest (bytes);
                break;
            case Ssm2Command.InitResponseFF:
                p = new Ssm2InitResponse (bytes);
                break;
            case Ssm2Command.ReadBlockRequestA0:
                p = new Ssm2ReadBlockRequest (bytes);
                break;
            case Ssm2Command.ReadBlockResponseE0:
                p = new Ssm2ReadBlockResponse (bytes);
                break;
            default:
                return null;
            }
            p.FromBytes (bytes);
            return p;
        }