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Updated README and added J1939 Example Code - Closes #42
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examples/J1939EngineSpeedTransmit/J1939EngineSpeedTransmit.csproj
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| <Project Sdk="Microsoft.NET.Sdk"> | ||
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| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net6.0</TargetFramework> | ||
| <ImplicitUsings>enable</ImplicitUsings> | ||
| <Nullable>enable</Nullable> | ||
| </PropertyGroup> | ||
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| <ItemGroup> | ||
| <ProjectReference Include="..\..\src\SocketCANSharp\SocketCANSharp.csproj" /> | ||
| </ItemGroup> | ||
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| </Project> |
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| #region License | ||
| /* | ||
| BSD 3-Clause License | ||
| Copyright (c) 2022, Derek Will | ||
| All rights reserved. | ||
| Redistribution and use in source and binary forms, with or without | ||
| modification, are permitted provided that the following conditions are met: | ||
| 1. Redistributions of source code must retain the above copyright notice, this | ||
| list of conditions and the following disclaimer. | ||
| 2. Redistributions in binary form must reproduce the above copyright notice, | ||
| this list of conditions and the following disclaimer in the documentation | ||
| and/or other materials provided with the distribution. | ||
| 3. Neither the name of the copyright holder nor the names of its | ||
| contributors may be used to endorse or promote products derived from | ||
| this software without specific prior written permission. | ||
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
| DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | ||
| FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
| DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
| SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | ||
| CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | ||
| OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| */ | ||
| #endregion | ||
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| using System.Net.Sockets; | ||
| using System.Runtime.InteropServices; | ||
| using SocketCANSharp; | ||
| using SocketCANSharp.Network; | ||
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| namespace J1939EngineSpeedTransmit | ||
| { | ||
| /// <summary> | ||
| /// Really basic J1939 program to show how to use SocketCAN# for J1939. | ||
| /// </summary> | ||
| class Program | ||
| { | ||
| static void Main(string[] args) | ||
| { | ||
| var vcan0 = CanNetworkInterface.GetAllInterfaces(true).FirstOrDefault(iface => iface.Name.Equals("vcan0")); | ||
| if (vcan0 == null) | ||
| { | ||
| Console.WriteLine("vcan0 interface not found!"); | ||
| return; | ||
| } | ||
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| using (var j1939Socket = new J1939CanSocket()) | ||
| { | ||
| j1939Socket.EnableBroadcast = true; | ||
| j1939Socket.SendPriority = 3; | ||
| j1939Socket.Bind(vcan0, SocketCanConstants.J1939_NO_NAME, 0x0F004, 0x01); | ||
| var destAddr = new SockAddrCanJ1939(vcan0.Index) | ||
| { | ||
| Name = SocketCanConstants.J1939_NO_NAME, | ||
| PGN = 0x0F004, | ||
| Address = SocketCanConstants.J1939_NO_ADDR, | ||
| }; | ||
| // Engine Speed: 2573.5 RPM (0x506C -> 20588 * 0.125) | ||
| j1939Socket.WriteTo(new byte[] { 0xFF, 0xFF, 0xFF, 0x6C, 0x50, 0xFF, 0xFF, 0xFF }, MessageFlags.None, destAddr); | ||
| // candump: vcan0 0CF00401 [8] FF FF FF 6C 50 FF FF FF | ||
| } | ||
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| using (var j1939Handle = LibcNativeMethods.Socket(SocketCanConstants.PF_CAN, SocketType.Dgram, SocketCanProtocolType.CAN_J1939)) | ||
| { | ||
| var ifr = new Ifreq("vcan0"); | ||
| int ioctlResult = LibcNativeMethods.Ioctl(j1939Handle, SocketCanConstants.SIOCGIFINDEX, ifr); | ||
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| int value = 1; | ||
| int enableBroadcastResult = LibcNativeMethods.SetSockOpt(j1939Handle, SocketLevel.SOL_SOCKET, SocketLevelOptions.SO_BROADCAST, ref value, Marshal.SizeOf(typeof(int))); | ||
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| int prio = 3; | ||
| int prioResult = LibcNativeMethods.SetSockOpt(j1939Handle, SocketLevel.SOL_CAN_J1939, J1939SocketOptions.SO_J1939_SEND_PRIO, ref prio, Marshal.SizeOf(typeof(int))); | ||
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| var srcAddr = new SockAddrCanJ1939(ifr.IfIndex) | ||
| { | ||
| Name = SocketCanConstants.J1939_NO_NAME, | ||
| PGN = 0x0F004, | ||
| Address = 0x01, | ||
| }; | ||
| int bindResult = LibcNativeMethods.Bind(j1939Handle, srcAddr, Marshal.SizeOf(typeof(SockAddrCanJ1939)));; | ||
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| var dstAddr = new SockAddrCanJ1939(vcan0.Index) | ||
| { | ||
| Name = SocketCanConstants.J1939_NO_NAME, | ||
| PGN = 0x0F004, | ||
| Address = SocketCanConstants.J1939_NO_ADDR, | ||
| }; | ||
| // Engine Speed: 582.5 RPM (0x1234 -> 4660 * 0.125) | ||
| byte[] data = new byte[] { 0xFF, 0xFF, 0xFF, 0x34, 0x12, 0xFF, 0xFF, 0xFF }; | ||
| int sendToResult = LibcNativeMethods.SendTo(j1939Handle, data, data.Length, MessageFlags.None, dstAddr, Marshal.SizeOf(typeof(SockAddrCanJ1939))); | ||
| // candump: vcan0 0CF00401 [8] FF FF FF 34 12 FF FF FF | ||
| } | ||
| } | ||
| } | ||
| } |