public sealed override void Update()
{
while (Ftd2xx.BytesToRead(_handle) >= 285)
{
ReadData();
}
if (Ftd2xx.BytesToRead(_handle) == 1)
{
Ftd2xx.ReadByte(_handle);
}
Ftd2xx.Write(_handle, new byte[] { 0x38 });
_alternativeRequest.BeginInvoke(null, null);
}
public TBalancerGroup(ISettings settings)
{
uint numDevices;
try
{
if (Ftd2xx.FT_CreateDeviceInfoList(out numDevices) != Ftd2xx.FT_STATUS.FT_OK)
{
_report.AppendLine("Status: FT_CreateDeviceInfoList failed");
return;
}
}
catch (DllNotFoundException)
{
return;
}
catch (ArgumentNullException)
{
return;
}
catch (EntryPointNotFoundException)
{
return;
}
catch (BadImageFormatException)
{
return;
}
Ftd2xx.FT_DEVICE_INFO_NODE[] info = new Ftd2xx.FT_DEVICE_INFO_NODE[numDevices];
if (Ftd2xx.FT_GetDeviceInfoList(info, ref numDevices) != Ftd2xx.FT_STATUS.FT_OK)
{
_report.AppendLine("Status: FT_GetDeviceInfoList failed");
return;
}
// make sure numDevices is not larger than the info array
if (numDevices > info.Length)
{
numDevices = (uint)info.Length;
}
for (int i = 0; i < numDevices; i++)
{
_report.Append("Device Index: ");
_report.AppendLine(i.ToString(CultureInfo.InvariantCulture));
_report.Append("Device Type: ");
_report.AppendLine(info[i].Type.ToString());
// the T-Balancer always uses an FT232BM
if (info[i].Type != Ftd2xx.FT_DEVICE.FT_DEVICE_232BM)
{
_report.AppendLine("Status: Wrong device type");
continue;
}
Ftd2xx.FT_STATUS status = Ftd2xx.FT_Open(i, out Ftd2xx.FT_HANDLE handle);
if (status != Ftd2xx.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, Ftd2xx.FT_FLOW_CONTROL.FT_FLOW_RTS_CTS, 0x11, 0x13);
Ftd2xx.FT_SetTimeouts(handle, 1000, 1000);
Ftd2xx.FT_Purge(handle, Ftd2xx.FT_PURGE.FT_PURGE_ALL);
status = Ftd2xx.Write(handle, new byte[] { 0x38 });
if (status != Ftd2xx.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, Ftd2xx.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();
}
}
}