public FT_STATUS ReadFT4232HEEPROM(FT4232H_EEPROM_STRUCTURE ee4232h)
{
// Initialise ftStatus to something other than FT_OK
FT_STATUS ftStatus = FT_STATUS.FT_OTHER_ERROR;
FT_ERROR ftErrorCondition = FT_ERROR.FT_NO_ERROR;
// If the DLL hasn't been loaded, just return here
if (hFTD2XXDLL == IntPtr.Zero)
return ftStatus;
// Check for our required function pointers being set up
if (pFT_EE_Read != IntPtr.Zero)
{
tFT_EE_Read FT_EE_Read = (tFT_EE_Read)Marshal.GetDelegateForFunctionPointer(pFT_EE_Read, typeof(tFT_EE_Read));
if (ftHandle != IntPtr.Zero)
{
FT_DEVICE DeviceType = FT_DEVICE.FT_DEVICE_UNKNOWN;
// Check that it is an FT4232H that we are trying to read
GetDeviceType(ref DeviceType);
if (DeviceType != FT_DEVICE.FT_DEVICE_4232H)
{
// If it is not, throw an exception
ftErrorCondition = FT_ERROR.FT_INCORRECT_DEVICE;
ErrorHandler(ftStatus, ftErrorCondition);
}
FT_PROGRAM_DATA eedata = new FT_PROGRAM_DATA();
// Set up structure headers
eedata.Signature1 = 0x00000000;
eedata.Signature2 = 0xFFFFFFFF;
eedata.Version = 4;
// Allocate space from unmanaged heap
eedata.Manufacturer = Marshal.AllocHGlobal(32);
eedata.ManufacturerID = Marshal.AllocHGlobal(16);
eedata.Description = Marshal.AllocHGlobal(64);
eedata.SerialNumber = Marshal.AllocHGlobal(16);
// Call FT_EE_Read
ftStatus = FT_EE_Read(ftHandle, eedata);
// Retrieve string values
ee4232h.Manufacturer = Marshal.PtrToStringAnsi(eedata.Manufacturer);
ee4232h.ManufacturerID = Marshal.PtrToStringAnsi(eedata.ManufacturerID);
ee4232h.Description = Marshal.PtrToStringAnsi(eedata.Description);
ee4232h.SerialNumber = Marshal.PtrToStringAnsi(eedata.SerialNumber);
// Free unmanaged buffers
Marshal.FreeHGlobal(eedata.Manufacturer);
Marshal.FreeHGlobal(eedata.ManufacturerID);
Marshal.FreeHGlobal(eedata.Description);
Marshal.FreeHGlobal(eedata.SerialNumber);
// Map non-string elements to structure to be returned
// Standard elements
ee4232h.VendorID = eedata.VendorID;
ee4232h.ProductID = eedata.ProductID;
ee4232h.MaxPower = eedata.MaxPower;
ee4232h.SelfPowered = Convert.ToBoolean(eedata.SelfPowered);
ee4232h.RemoteWakeup = Convert.ToBoolean(eedata.RemoteWakeup);
// 4232H specific fields
ee4232h.PullDownEnable = Convert.ToBoolean(eedata.PullDownEnable8);
ee4232h.SerNumEnable = Convert.ToBoolean(eedata.SerNumEnable8);
ee4232h.ASlowSlew = Convert.ToBoolean(eedata.ASlowSlew);
ee4232h.ASchmittInput = Convert.ToBoolean(eedata.ASchmittInput);
ee4232h.ADriveCurrent = eedata.ADriveCurrent;
ee4232h.BSlowSlew = Convert.ToBoolean(eedata.BSlowSlew);
ee4232h.BSchmittInput = Convert.ToBoolean(eedata.BSchmittInput);
ee4232h.BDriveCurrent = eedata.BDriveCurrent;
ee4232h.CSlowSlew = Convert.ToBoolean(eedata.CSlowSlew);
ee4232h.CSchmittInput = Convert.ToBoolean(eedata.CSchmittInput);
ee4232h.CDriveCurrent = eedata.CDriveCurrent;
ee4232h.DSlowSlew = Convert.ToBoolean(eedata.DSlowSlew);
ee4232h.DSchmittInput = Convert.ToBoolean(eedata.DSchmittInput);
ee4232h.DDriveCurrent = eedata.DDriveCurrent;
ee4232h.ARIIsTXDEN = Convert.ToBoolean(eedata.ARIIsTXDEN);
ee4232h.BRIIsTXDEN = Convert.ToBoolean(eedata.BRIIsTXDEN);
ee4232h.CRIIsTXDEN = Convert.ToBoolean(eedata.CRIIsTXDEN);
ee4232h.DRIIsTXDEN = Convert.ToBoolean(eedata.DRIIsTXDEN);
ee4232h.AIsVCP = Convert.ToBoolean(eedata.AIsVCP8);
ee4232h.BIsVCP = Convert.ToBoolean(eedata.BIsVCP8);
ee4232h.CIsVCP = Convert.ToBoolean(eedata.CIsVCP8);
ee4232h.DIsVCP = Convert.ToBoolean(eedata.DIsVCP8);
}
}
else
{
if (pFT_EE_Read == IntPtr.Zero)
{
LogB.Debug("FTD2XX: Failed to load function FT_EE_Read.");
}
}
return ftStatus;
}