public FT_STATUS WriteFT232REEPROM(FT232R_EEPROM_STRUCTURE ee232r)
{
// 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 FT232R or FT245R that we are trying to write
GetDeviceType(ref DeviceType);
if (DeviceType != FT_DEVICE.FT_DEVICE_232R)
{
// If it is not, throw an exception
ftErrorCondition = FT_ERROR.FT_INCORRECT_DEVICE;
ErrorHandler(ftStatus, ftErrorCondition);
}
// Check for VID and PID of 0x0000
if ((ee232r.VendorID == 0x0000) | (ee232r.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 = 2;
// 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 (ee232r.Manufacturer.Length > 32)
ee232r.Manufacturer = ee232r.Manufacturer.Substring(0, 32);
if (ee232r.ManufacturerID.Length > 16)
ee232r.ManufacturerID = ee232r.ManufacturerID.Substring(0, 16);
if (ee232r.Description.Length > 64)
ee232r.Description = ee232r.Description.Substring(0, 64);
if (ee232r.SerialNumber.Length > 16)
ee232r.SerialNumber = ee232r.SerialNumber.Substring(0, 16);
// Set string values
eedata.Manufacturer = Marshal.StringToHGlobalAnsi(ee232r.Manufacturer);
eedata.ManufacturerID = Marshal.StringToHGlobalAnsi(ee232r.ManufacturerID);
eedata.Description = Marshal.StringToHGlobalAnsi(ee232r.Description);
eedata.SerialNumber = Marshal.StringToHGlobalAnsi(ee232r.SerialNumber);
// Map non-string elements to structure
// Standard elements
eedata.VendorID = ee232r.VendorID;
eedata.ProductID = ee232r.ProductID;
eedata.MaxPower = ee232r.MaxPower;
eedata.SelfPowered = Convert.ToUInt16(ee232r.SelfPowered);
eedata.RemoteWakeup = Convert.ToUInt16(ee232r.RemoteWakeup);
// 232R specific fields
eedata.PullDownEnableR = Convert.ToByte(ee232r.PullDownEnable);
eedata.SerNumEnableR = Convert.ToByte(ee232r.SerNumEnable);
eedata.UseExtOsc = Convert.ToByte(ee232r.UseExtOsc);
eedata.HighDriveIOs = Convert.ToByte(ee232r.HighDriveIOs);
// Override any endpoint size the user has selected and force 64 bytes
// Some users have been known to wreck devices by setting 0 here...
eedata.EndpointSize = 64;
eedata.PullDownEnableR = Convert.ToByte(ee232r.PullDownEnable);
eedata.SerNumEnableR = Convert.ToByte(ee232r.SerNumEnable);
eedata.InvertTXD = Convert.ToByte(ee232r.InvertTXD);
eedata.InvertRXD = Convert.ToByte(ee232r.InvertRXD);
eedata.InvertRTS = Convert.ToByte(ee232r.InvertRTS);
eedata.InvertCTS = Convert.ToByte(ee232r.InvertCTS);
eedata.InvertDTR = Convert.ToByte(ee232r.InvertDTR);
eedata.InvertDSR = Convert.ToByte(ee232r.InvertDSR);
eedata.InvertDCD = Convert.ToByte(ee232r.InvertDCD);
eedata.InvertRI = Convert.ToByte(ee232r.InvertRI);
eedata.Cbus0 = ee232r.Cbus0;
eedata.Cbus1 = ee232r.Cbus1;
eedata.Cbus2 = ee232r.Cbus2;
eedata.Cbus3 = ee232r.Cbus3;
eedata.Cbus4 = ee232r.Cbus4;
eedata.RIsD2XX = Convert.ToByte(ee232r.RIsD2XX);
// 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)
{
LogB.Debug("FTD2XX: Failed to load function FT_EE_Program.");
}
}
return ftStatus;
}