public void ModbusFrameWriter_WriteFrame_CorrectlyWritesAReadInputRegistersRequest()
{
// Given
var request = new RequestAdu
{
Header = new Header(transactionID: 1, unitID: 4),
Pdu = new RequestReadInputRegisters
{
Address = 0x0040,
Quantity = 0x000A,
},
};
var arraybuffer = new ArrayBufferWriter <byte>();
// When
var writer = new ModbusFrameWriter(arraybuffer);
var position = writer.WriteFrame(request);
arraybuffer.Advance(position);
// Then
var data = arraybuffer.WrittenSpan.ToArray();
Assert.Equal(
new byte[] { 0x00, 0x01, 0x00, 0x00, 0x00, 0x06, 0x04, 0x04, 0x00, 0x40, 0x00, 0x0A },
data
);
}
public void ModbusFrameWriter_WriteFrame_CorrectlyWritesAWriteSingleCoilRequest()
{
// Given
var request = new RequestAdu
{
Header = new Header(transactionID: 1, unitID: 4),
Pdu = new RequestWriteSingleCoil
{
Address = 0x0041,
CoilState = true,
},
};
var arraybuffer = new ArrayBufferWriter <byte>();
// When
var writer = new ModbusFrameWriter(arraybuffer);
var position = writer.WriteFrame(request);
arraybuffer.Advance(position);
// Then
var data = arraybuffer.WrittenSpan.ToArray();
Assert.Equal(
new byte[] { 0x00, 0x01, 0x00, 0x00, 0x00, 0x06, 0x04, 0x05, 0x00, 0x41, 0xFF, 0x00 },
data
);
}
public async Task ConnectAsync(CancellationToken token = default)
{
_connection = await _factory.ConnectAsync(token).ConfigureAwait(false);
_writer = new ModbusFrameWriter(_connection.Transport.Output);
_readingTask = ReadMessages();
}
public void ModbusFrameWriter_WriteFrame_CorrectlyWritesAWriteMultipleCoilsRequest(object request, byte[] expected)
{
// Given
var arraybuffer = new ArrayBufferWriter <byte>();
// When
var writer = new ModbusFrameWriter(arraybuffer);
var position = writer.WriteFrame((RequestAdu)request);
arraybuffer.Advance(position);
// Then
var data = arraybuffer.WrittenSpan.ToArray();
Assert.Equal(expected, data);
}
