//**************************************************************************
// WriteFT2232HEEPROM
//**************************************************************************
// Intellisense comments
/// <summary>
/// Writes the specified values to the EEPROM of an FT2232H device.
/// Calls FT_EE_Program in FTD2XX DLL
/// </summary>
/// <returns>FT_STATUS value from FT_EE_Program in FTD2XX DLL</returns>
/// <param name="ee2232h">The EEPROM settings to be written to the device</param>
/// <remarks>If the strings are too long, they will be truncated to their maximum permitted lengths</remarks>
/// <exception cref="FT_EXCEPTION">Thrown when the current device does not match the type required by this method.</exception>
public FT_STATUS WriteFT2232HEEPROM(FT2232H_EEPROM_STRUCTURE ee2232h)
{
// 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_Program != IntPtr.Zero)
{
tFT_EE_Program FT_EE_Program = (tFT_EE_Program)Marshal.GetDelegateForFunctionPointer(pFT_EE_Program, typeof(tFT_EE_Program));
if (ftHandle != IntPtr.Zero)
{
FT_DEVICE DeviceType = FT_DEVICE.FT_DEVICE_UNKNOWN;
// Check that it is an FT2232H that we are trying to write
GetDeviceType(ref DeviceType);
if (DeviceType != FT_DEVICE.FT_DEVICE_2232H)
{
// If it is not, throw an exception
ftErrorCondition = FT_ERROR.FT_INCORRECT_DEVICE;
ErrorHandler(ftStatus, ftErrorCondition);
}
// Check for VID and PID of 0x0000
if ((ee2232h.VendorID == 0x0000) | (ee2232h.ProductID == 0x0000))
{
// Do not allow users to program the device with VID or PID of 0x0000
return FT_STATUS.FT_INVALID_PARAMETER;
}
FT_PROGRAM_DATA eedata = new FT_PROGRAM_DATA();
// Set up structure headers
eedata.Signature1 = 0x00000000;
eedata.Signature2 = 0xFFFFFFFF;
eedata.Version = 3;
// 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);
// Check lengths of strings to make sure that they are within our limits
// If not, trim them to make them our maximum length
if (ee2232h.Manufacturer.Length > 32)
ee2232h.Manufacturer = ee2232h.Manufacturer.Substring(0, 32);
if (ee2232h.ManufacturerID.Length > 16)
ee2232h.ManufacturerID = ee2232h.ManufacturerID.Substring(0, 16);
if (ee2232h.Description.Length > 64)
ee2232h.Description = ee2232h.Description.Substring(0, 64);
if (ee2232h.SerialNumber.Length > 16)
ee2232h.SerialNumber = ee2232h.SerialNumber.Substring(0, 16);
// Set string values
eedata.Manufacturer = Marshal.StringToHGlobalAnsi(ee2232h.Manufacturer);
eedata.ManufacturerID = Marshal.StringToHGlobalAnsi(ee2232h.ManufacturerID);
eedata.Description = Marshal.StringToHGlobalAnsi(ee2232h.Description);
eedata.SerialNumber = Marshal.StringToHGlobalAnsi(ee2232h.SerialNumber);
// Map non-string elements to structure
// Standard elements
eedata.VendorID = ee2232h.VendorID;
eedata.ProductID = ee2232h.ProductID;
eedata.MaxPower = ee2232h.MaxPower;
eedata.SelfPowered = Convert.ToUInt16(ee2232h.SelfPowered);
eedata.RemoteWakeup = Convert.ToUInt16(ee2232h.RemoteWakeup);
// 2232H specific fields
eedata.PullDownEnable7 = Convert.ToByte(ee2232h.PullDownEnable);
eedata.SerNumEnable7 = Convert.ToByte(ee2232h.SerNumEnable);
eedata.ALSlowSlew = Convert.ToByte(ee2232h.ALSlowSlew);
eedata.ALSchmittInput = Convert.ToByte(ee2232h.ALSchmittInput);
eedata.ALDriveCurrent = ee2232h.ALDriveCurrent;
eedata.AHSlowSlew = Convert.ToByte(ee2232h.AHSlowSlew);
eedata.AHSchmittInput = Convert.ToByte(ee2232h.AHSchmittInput);
eedata.AHDriveCurrent = ee2232h.AHDriveCurrent;
eedata.BLSlowSlew = Convert.ToByte(ee2232h.BLSlowSlew);
eedata.BLSchmittInput = Convert.ToByte(ee2232h.BLSchmittInput);
eedata.BLDriveCurrent = ee2232h.BLDriveCurrent;
eedata.BHSlowSlew = Convert.ToByte(ee2232h.BHSlowSlew);
eedata.BHSchmittInput = Convert.ToByte(ee2232h.BHSchmittInput);
eedata.BHDriveCurrent = ee2232h.BHDriveCurrent;
eedata.IFAIsFifo7 = Convert.ToByte(ee2232h.IFAIsFifo);
eedata.IFAIsFifoTar7 = Convert.ToByte(ee2232h.IFAIsFifoTar);
eedata.IFAIsFastSer7 = Convert.ToByte(ee2232h.IFAIsFastSer);
eedata.AIsVCP7 = Convert.ToByte(ee2232h.AIsVCP);
eedata.IFBIsFifo7 = Convert.ToByte(ee2232h.IFBIsFifo);
eedata.IFBIsFifoTar7 = Convert.ToByte(ee2232h.IFBIsFifoTar);
eedata.IFBIsFastSer7 = Convert.ToByte(ee2232h.IFBIsFastSer);
eedata.BIsVCP7 = Convert.ToByte(ee2232h.BIsVCP);
eedata.PowerSaveEnable = Convert.ToByte(ee2232h.PowerSaveEnable);
// Call FT_EE_Program
ftStatus = FT_EE_Program(ftHandle, eedata);
// Free unmanaged buffers
Marshal.FreeHGlobal(eedata.Manufacturer);
Marshal.FreeHGlobal(eedata.ManufacturerID);
Marshal.FreeHGlobal(eedata.Description);
Marshal.FreeHGlobal(eedata.SerialNumber);
}
}
else
{
if (pFT_EE_Program == IntPtr.Zero)
{
MessageBox.Show("Failed to load function FT_EE_Program.");
}
}
return ftStatus;
}
//**************************************************************************
// ReadFT2232HEEPROM
//**************************************************************************
// Intellisense comments
/// <summary>
/// Reads the EEPROM contents of an FT2232H device.
/// </summary>
/// <returns>FT_STATUS value from FT_EE_Read in FTD2XX DLL</returns>
/// <param name="ee2232h">An FT2232H_EEPROM_STRUCTURE which contains only the relevant information for an FT2232H device.</param>
/// <exception cref="FT_EXCEPTION">Thrown when the current device does not match the type required by this method.</exception>
public FT_STATUS ReadFT2232HEEPROM(FT2232H_EEPROM_STRUCTURE ee2232h)
{
// 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 FT2232H that we are trying to read
GetDeviceType(ref DeviceType);
if (DeviceType != FT_DEVICE.FT_DEVICE_2232H)
{
// 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 = 3;
// 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
ee2232h.Manufacturer = Marshal.PtrToStringAnsi(eedata.Manufacturer);
ee2232h.ManufacturerID = Marshal.PtrToStringAnsi(eedata.ManufacturerID);
ee2232h.Description = Marshal.PtrToStringAnsi(eedata.Description);
ee2232h.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
ee2232h.VendorID = eedata.VendorID;
ee2232h.ProductID = eedata.ProductID;
ee2232h.MaxPower = eedata.MaxPower;
ee2232h.SelfPowered = Convert.ToBoolean(eedata.SelfPowered);
ee2232h.RemoteWakeup = Convert.ToBoolean(eedata.RemoteWakeup);
// 2232H specific fields
ee2232h.PullDownEnable = Convert.ToBoolean(eedata.PullDownEnable7);
ee2232h.SerNumEnable = Convert.ToBoolean(eedata.SerNumEnable7);
ee2232h.ALSlowSlew = Convert.ToBoolean(eedata.ALSlowSlew);
ee2232h.ALSchmittInput = Convert.ToBoolean(eedata.ALSchmittInput);
ee2232h.ALDriveCurrent = eedata.ALDriveCurrent;
ee2232h.AHSlowSlew = Convert.ToBoolean(eedata.AHSlowSlew);
ee2232h.AHSchmittInput = Convert.ToBoolean(eedata.AHSchmittInput);
ee2232h.AHDriveCurrent = eedata.AHDriveCurrent;
ee2232h.BLSlowSlew = Convert.ToBoolean(eedata.BLSlowSlew);
ee2232h.BLSchmittInput = Convert.ToBoolean(eedata.BLSchmittInput);
ee2232h.BLDriveCurrent = eedata.BLDriveCurrent;
ee2232h.BHSlowSlew = Convert.ToBoolean(eedata.BHSlowSlew);
ee2232h.BHSchmittInput = Convert.ToBoolean(eedata.BHSchmittInput);
ee2232h.BHDriveCurrent = eedata.BHDriveCurrent;
ee2232h.IFAIsFifo = Convert.ToBoolean(eedata.IFAIsFifo7);
ee2232h.IFAIsFifoTar = Convert.ToBoolean(eedata.IFAIsFifoTar7);
ee2232h.IFAIsFastSer = Convert.ToBoolean(eedata.IFAIsFastSer7);
ee2232h.AIsVCP = Convert.ToBoolean(eedata.AIsVCP7);
ee2232h.IFBIsFifo = Convert.ToBoolean(eedata.IFBIsFifo7);
ee2232h.IFBIsFifoTar = Convert.ToBoolean(eedata.IFBIsFifoTar7);
ee2232h.IFBIsFastSer = Convert.ToBoolean(eedata.IFBIsFastSer7);
ee2232h.BIsVCP = Convert.ToBoolean(eedata.BIsVCP7);
ee2232h.PowerSaveEnable = Convert.ToBoolean(eedata.PowerSaveEnable);
}
}
else
{
if (pFT_EE_Read == IntPtr.Zero)
{
MessageBox.Show("Failed to load function FT_EE_Read.");
}
}
return ftStatus;
}
