DBCExample

using jnsoft.Helpers;
using jnsoft.Comm.CAN;

namespace jnsoft.DBC.Examples;

/// <summary>
/// ASAP2ibrary DBC handling demonstration.
///
/// - Loading an DBC file
/// - Register to receive CAN frames on a kvaser (as an example) CAN hardware.
/// - Print a first valid signal while receiving CAN frames.
///
/// Usage: DBCExample DBCFile.dbc
/// </summary>
class Program
{
  static int Main(string[] args)
  {
    var orgColor = Console.ForegroundColor;
    try
    {
      Console.ForegroundColor = ConsoleColor.White;
      if (args.Length != 1)
      { // no args -> present usage
        var appName = Extensions.AppName;
        Console.WriteLine($"{appName}({Extensions.AppVersion})");
        Console.WriteLine("Read a DBC file, interprete values received from the CAN Bus and print them...");
        Console.WriteLine("Required input: a DBC file");
        Console.WriteLine($"Usage: {appName} DBCFile.dbc");
        return -1;
      }

      // Open the DBC file
      var dbcFile = DBCFile.open(args[0]);

      // Create a CAN provider on Port 0 with 1 Mit/s and
      var canProvider = new Comm.CAN.Kvaser.KvaserCAN();
      canProvider.open(new CANConfiguration(0, CANBaudrate._1MBit));

      // register to receive any CAN frame from the CAN BUS.
      canProvider.registerClient((o, e) => { dbcFile.onCANReceived(e.Frame, out var msg); });

      // Get a DBC source with at least one valid CAN message defined
      var source = dbcFile.Sources.Values.FirstOrDefault(s => s.Messages.Count > 0 && s.Messages.FirstOrDefault(x => x.IsValid) != null);

      // Get a message defined with a valid CAN Id and at least one signal defined
      var message = source.Messages.FirstOrDefault(m => m.IsValid && m.Signals.Count > 0);

      // Get a signal with the message
      var signal = message?.Signals.FirstOrDefault();

      if (signal != null)
      {
        // signal is valid
        Console.WriteLine($"Press ESC to quit, any other key to refresh current values...");
        Console.ForegroundColor = ConsoleColor.Green;

        int count = 0;
        do
        { // refresh signal data
          var strId = CANProvider.toCANIDString(message.ID);
          var time = message.LastUpdate;
          var strValue = signal.toStringValue();
          Console.Write($"\rRequest {count++}: Time:{time:HH:mm:ss} Source:{source} Message:{message.Name}({strId}) Signal:{signal.Name} Value={strValue}");
        } while (Console.ReadKey(true).Key != ConsoleKey.Escape);

        return 0;
      }
    }
    catch (Exception ex)
    {
      Console.ForegroundColor = ConsoleColor.Red;
      Console.WriteLine($"Something failed, file or signal not found or unsupported!\nDetails:\n{ex.Message}");
    }
    finally { Console.ForegroundColor = orgColor; }
    return -1;
  }
}