public static void Read(FT_HANDLE handle, byte[] buffer)
{
uint bytesReturned;
FT_STATUS status =
FT_Read(handle, buffer, (uint)buffer.Length, out bytesReturned);
if (status != FT_STATUS.FT_OK || bytesReturned != buffer.Length)
{
throw new InvalidOperationException();
}
}
public static byte ReadByte(FT_HANDLE handle)
{
byte buffer;
uint bytesReturned;
var status = FT_ReadByte(handle, out buffer, 1, out bytesReturned);
if (status != FT_STATUS.FT_OK || bytesReturned != 1)
{
throw new InvalidOperationException();
}
return(buffer);
}
public static byte ReadByte(FT_HANDLE handle)
{
byte[] buffer = new byte[1];
uint bytesReturned;
FT_STATUS status = FT_Read(handle, buffer, 1, out bytesReturned);
if (status != FT_STATUS.FT_OK || bytesReturned != 1)
{
throw new InvalidOperationException();
}
return(buffer[0]);
}
public static FT_STATUS Write(FT_HANDLE handle, byte[] buffer)
{
uint bytesWritten;
var status = FT_Write(handle, buffer, (uint)buffer.Length,
out bytesWritten);
if (bytesWritten != buffer.Length)
{
return(FT_STATUS.FT_FAILED_TO_WRITE_DEVICE);
}
return(status);
}
public static int BytesToRead(FT_HANDLE handle)
{
uint amountInRxQueue;
uint amountInTxQueue;
uint eventStatus;
if (FT_GetStatus(handle, out amountInRxQueue, out amountInTxQueue,
out eventStatus) == FT_STATUS.FT_OK)
{
return((int)amountInRxQueue);
}
return(0);
}
public static extern FT_STATUS FT_GetStatus(FT_HANDLE handle, out uint amountInRxQueue, out uint amountInTxQueue, out uint eventStatus);
public TBalancerGroup(ISettings settings)
{
uint numDevices = 0;
try {
if (FTD2XX.FT_CreateDeviceInfoList(out numDevices) != FT_STATUS.FT_OK)
{
report.AppendLine("Status: FT_CreateDeviceInfoList failed");
return;
}
} catch (DllNotFoundException) { return; }
catch (EntryPointNotFoundException) { return; }
catch (BadImageFormatException) { return; }
for (int i = 0; i < numDevices; i++)
{
byte[] serialNumberBuf = new byte[255];
byte[] descriptionBuf = new byte[255];
FT_HANDLE ftHandle = default;
uint flags = 0;
uint type = 0;
uint id = 0;
uint locId = 0;
if (FTD2XX.FT_GetDeviceInfoDetail(i, ref flags, ref type, ref id, ref locId, serialNumberBuf, descriptionBuf,
out ftHandle) != FT_STATUS.FT_OK)
{
continue;
}
// For whatever reason, the returned strings contain lots of garbage past the first binary 0
string serialNumber = Encoding.UTF8.GetString(serialNumberBuf);
string description = Encoding.UTF8.GetString(descriptionBuf);
TrimToSize(ref serialNumber);
TrimToSize(ref description);
FT_DEVICE deviceType = (FT_DEVICE)type;
report.Append("Device Index: ");
report.AppendLine(i.ToString(CultureInfo.InvariantCulture));
report.Append("Device Type: ");
report.AppendLine(deviceType.ToString());
report.Append("Description: ");
report.AppendLine(description);
report.Append("Serial number: ");
report.AppendLine(serialNumber);
FTD2XX.FT_Close(ftHandle);
ftHandle = default;
// the T-Balancer always uses an FT232BM
if (deviceType != FT_DEVICE.FT_DEVICE_232BM)
{
report.AppendLine("Status: Wrong device type");
continue;
}
FT_HANDLE handle;
FT_STATUS status = FTD2XX.FT_Open(i, out handle);
if (status != FT_STATUS.FT_OK)
{
report.AppendLine("Open Status: " + status);
continue;
}
FTD2XX.FT_SetBaudRate(handle, 19200);
FTD2XX.FT_SetDataCharacteristics(handle, 8, 1, 0);
FTD2XX.FT_SetFlowControl(handle, FT_FLOW_CONTROL.FT_FLOW_RTS_CTS, 0x11,
0x13);
FTD2XX.FT_SetTimeouts(handle, 1000, 1000);
FTD2XX.FT_Purge(handle, FT_PURGE.FT_PURGE_ALL);
status = FTD2XX.Write(handle, new byte[] { 0x38 });
if (status != FT_STATUS.FT_OK)
{
report.AppendLine("Write Status: " + status);
FTD2XX.FT_Close(handle);
continue;
}
bool isValid = false;
byte protocolVersion = 0;
int j = 0;
while (FTD2XX.BytesToRead(handle) == 0 && j < 2)
{
Thread.Sleep(100);
j++;
}
if (FTD2XX.BytesToRead(handle) > 0)
{
if (FTD2XX.ReadByte(handle) == TBalancer.STARTFLAG)
{
while (FTD2XX.BytesToRead(handle) < 284 && j < 5)
{
Thread.Sleep(100);
j++;
}
int length = FTD2XX.BytesToRead(handle);
if (length >= 284)
{
byte[] data = new byte[285];
data[0] = TBalancer.STARTFLAG;
for (int k = 1; k < data.Length; k++)
{
data[k] = FTD2XX.ReadByte(handle);
}
// check protocol version 2X (protocols seen: 2C, 2A, 28)
isValid = (data[274] & 0xF0) == 0x20;
protocolVersion = data[274];
if (!isValid)
{
report.Append("Status: Wrong Protocol Version: 0x");
report.AppendLine(
protocolVersion.ToString("X", CultureInfo.InvariantCulture));
}
}
else
{
report.AppendLine("Status: Wrong Message Length: " + length);
}
}
else
{
report.AppendLine("Status: Wrong Startflag");
}
}
else
{
report.AppendLine("Status: No Response");
}
FTD2XX.FT_Purge(handle, FT_PURGE.FT_PURGE_ALL);
FTD2XX.FT_Close(handle);
if (isValid)
{
report.AppendLine("Status: OK");
hardware.Add(new TBalancer(i, protocolVersion, settings));
}
if (i < numDevices - 1)
{
report.AppendLine();
}
}
}
public static extern FT_STATUS FT_SetDataCharacteristics(FT_HANDLE handle, byte wordLength, byte stopBits, byte parity);
public static extern FT_STATUS FT_SetBaudRate(FT_HANDLE handle, uint baudRate);
public static extern FT_STATUS FT_Close(FT_HANDLE handle);
public static extern FT_STATUS FT_Open(int device, out FT_HANDLE handle);
public static extern FT_STATUS FT_ReadByte(FT_HANDLE handle, out byte buffer, uint bytesToRead, out uint bytesReturned);
public static extern FT_STATUS FT_Read(FT_HANDLE handle, [Out] byte[] buffer, uint bytesToRead, out uint bytesReturned);
public static extern FT_STATUS FT_Purge(FT_HANDLE handle, FT_PURGE mask);
public static extern FT_STATUS FT_Write(FT_HANDLE handle, byte[] buffer, uint bytesToWrite, out uint bytesWritten);
public static extern FT_STATUS FT_SetTimeouts(FT_HANDLE handle, uint readTimeout, uint writeTimeout);
public static extern FT_STATUS FT_SetFlowControl(FT_HANDLE handle, FT_FLOW_CONTROL flowControl, byte xon, byte xoff);
