private bool SendInternal(ApplicationMessages messageType, byte[] messageData)
{
var header = new EnttecMessageHeader();
header.SetMessageType(messageType);
header.SetDataLength(messageData.Length);
if (!header.IsValid())
{
throw new ArgumentException("Invalid message data!");
}
if (!_ftdiDriver.Write(header.Data))
{
return(false);
}
var body = new EnttecMessageBody(messageData);
if (!_ftdiDriver.Write(body.Data))
{
return(false);
}
var footer = new EnttecMessageFooter();
if (!_ftdiDriver.Write(footer.Data))
{
return(false);
}
return(true);
}
public void DataBiggerThanOneByteThrowsException()
{
// Arrange, Act, Assert
Assert.Throws <ArgumentException>(() =>
{
var test = new EnttecMessageFooter(new byte[2]);
});
}
public byte[] CreateMessageFromParts(EnttecMessageHeader header, EnttecMessageBody body,
EnttecMessageFooter footer)
{
var message = new List <byte>();
message.AddRange(header.Data);
message.AddRange(body.Data);
message.AddRange(footer.Data);
return(message.ToArray());
}
public void IsValid()
{
// Arrange
var footer1 = new EnttecMessageFooter();
var footer2 = new EnttecMessageFooter();
// Act
footer1.SetEndCodeByte(0x02);
footer2.SetEndCodeByte(EnttecMessageFooter.EndCodeByte);
// Assert
Assert.False(footer1.IsValid());
Assert.True(footer2.IsValid());
}
public void EndCodeByte()
{
// Arrange
var footer1 = new EnttecMessageFooter();
var footer2 = new EnttecMessageFooter(new byte[]
{
0x02
});
// Act
footer1.SetEndCodeByte(0x01);
// Assert
Assert.Equal(0x01, footer1.GetEndCodeByte());
Assert.Equal(0x02, footer2.GetEndCodeByte());
}
public byte[] CreateMessage(ApplicationMessages messageType, byte[] messageData)
{
var header = new EnttecMessageHeader();
header.SetMessageType(messageType);
header.SetDataLength(messageData.Length);
var body = new EnttecMessageBody(messageData);
var footer = new EnttecMessageFooter();
if (!header.IsValid() || !footer.IsValid())
{
throw new ArgumentException("Invalid message data!");
}
return(CreateMessageFromParts(header, body, footer));
}
private byte[] ReceiveInternal(ApplicationMessages messageType)
{
var startCode = new byte[1];
if (!_ftdiDriver.Read(startCode))
{
return(null);
}
if (EnttecMessageHeader.StartCodeByte != startCode[0])
{
return(null);
}
var byte1 = new byte[1];
var byte2 = new byte[1];
var byte3 = new byte[1];
if (!_ftdiDriver.Read(byte1))
{
return(null);
}
if (!_ftdiDriver.Read(byte2))
{
return(null);
}
if (!_ftdiDriver.Read(byte3))
{
return(null);
}
if (byte1[0] != (byte)messageType)
{
return(null);
}
var header = new EnttecMessageHeader(new byte[]
{
startCode[0],
byte1[0],
byte2[0],
byte3[0]
});
if (!header.IsValid())
{
return(null);
}
var body = new EnttecMessageBody(new byte[header.GetDataLength()]);
if (!_ftdiDriver.Read(body.Data))
{
return(null);
}
var footer = new EnttecMessageFooter();
if (!(_ftdiDriver.Read(footer.Data) & footer.IsValid()))
{
return(null);
}
return(body.Data);
}
