public override void SetParameters(int baudRate, DataBits dataBits, StopBits stopBits, Parity parity)
{
SetBaudRate(baudRate);
int config = (int)dataBits;
switch (parity)
{
case Parity.None:
config |= (0x00 << 8);
break;
case Parity.Odd:
config |= (0x01 << 8);
break;
case Parity.Even:
config |= (0x02 << 8);
break;
case Parity.Mark:
config |= (0x03 << 8);
break;
case Parity.Space:
config |= (0x04 << 8);
break;
default:
throw new ArgumentException("Unknown parity value: " + parity);
}
switch (stopBits)
{
case StopBits.One:
config |= (0x00 << 11);
break;
case StopBits.OnePointFive:
config |= (0x01 << 11);
break;
case StopBits.Two:
config |= (0x02 << 11);
break;
default:
throw new ArgumentException("Unknown stopBits value: " + stopBits);
}
int result = _connection.ControlTransfer(UsbAddressingExtensions.GetAddressing(FTDI_DEVICE_OUT_REQTYPE),
SIO_SET_DATA_REQUEST, config, 0, null, 0, USB_WRITE_TIMEOUT_MILLIS);
if (result != 0)
{
throw new UsbSerialException("Setting parameters failed: result=" + result);
}
}
internal void OutControlTransfer(int requestType, int request, int value, int index, byte[] data)
{
int length = data?.Length ?? 0;
int result = _connection.ControlTransfer(UsbAddressingExtensions.GetAddressing(requestType),
request, value, index, data, length, USB_WRITE_TIMEOUT_MILLIS);
if (result != length)
{
throw new UsbSerialException($"ControlTransfer with value 0x{value:x} failed: {result:D}");
}
}
public virtual void Reset()
{
int result = _connection.ControlTransfer(UsbAddressingExtensions.GetAddressing(FTDI_DEVICE_OUT_REQTYPE),
SIO_RESET_REQUEST, SIO_RESET_SIO, 0, null, 0, USB_WRITE_TIMEOUT_MILLIS);
if (result != 0)
{
throw new UsbSerialException("Reset failed: result=" + result);
}
_deviceType = FtdiDeviceType.TYPE_R;
}
internal byte[] InControlTransfer(int requestType, int request, int value, int index, int length)
{
byte[] buffer = new byte[length];
// ReSharper disable once PossibleInvalidCastException
int result = _connection.ControlTransfer(UsbAddressingExtensions.GetAddressing(requestType),
request, value, index, buffer, length, USB_READ_TIMEOUT_MILLIS);
if (result != length)
{
throw new UsbSerialException($"ControlTransfer with value 0x{value:x} failed: {result:D}");
}
return(buffer);
}
internal virtual int SetBaudRate(int baudRate)
{
long[] vals = ConvertBaudrate(baudRate);
long actualBaudrate = vals[0];
long index = vals[1];
long value = vals[2];
int result = _connection.ControlTransfer(UsbAddressingExtensions.GetAddressing(FTDI_DEVICE_OUT_REQTYPE),
SIO_SET_BAUD_RATE_REQUEST, (int)value, (int)index, null, 0, USB_WRITE_TIMEOUT_MILLIS);
if (result != 0)
{
throw new UsbSerialException($"Setting baudrate failed: result={result}");
}
return((int)actualBaudrate);
}
internal virtual int SetConfigSingle(int request, int value) => _connection.ControlTransfer(
UsbAddressingExtensions.GetAddressing(REQTYPE_HOST_TO_DEVICE), request, value, 0, null, 0, USB_WRITE_TIMEOUT_MILLIS);
internal virtual int ControlIn(int request, int value, int index, byte[] buffer) => _connection.ControlTransfer(
UsbAddressingExtensions.GetAddressing(REQTYPE_HOST_TO_DEVICE_CTL_IN),
request, value, index, buffer, buffer.Length, USB_TIMEOUT_MILLIS);
internal virtual int ControlOut(int request, int value, int index) => _connection.ControlTransfer(
UsbAddressingExtensions.GetAddressing(REQTYPE_HOST_TO_DEVICE_CTL_OUT), request, value, index, null, 0, USB_TIMEOUT_MILLIS);
