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 ExceedingMaxDataLengthThrowsException()
{
// Arrange, Act, Assert
Assert.Throws <ArgumentException>(() =>
{
var test = new EnttecMessageBody(new byte[601]);
});
}
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 CanSetAndReadData()
{
// Arrange
var body = new EnttecMessageBody(new byte[512]);
// Act (Set the first led to the color orange)
body.Data[1] = 255;
body.Data[2] = 125;
body.Data[3] = 0;
// Assert
Assert.Equal(255, body.Data[1]);
Assert.Equal(125, body.Data[2]);
Assert.Equal(0, body.Data[3]);
}
public void IsValid()
{
// Arrange, Act, Assert
Assert.Throws <ArgumentException>(() =>
{
var body1 = new EnttecMessageBody(new byte[601]);
});
Assert.Throws <ArgumentException>(() =>
{
var body2 = new EnttecMessageBody(new byte[0]);
});
var body3 = new EnttecMessageBody(new byte[1]);
}
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);
}
