public static Constants.AltBoardUSB DetectAltimeterDevice(ushort altID)
{
IntPtr usbRdTemp = IntPtr.Zero;
IntPtr usbWrTemp = IntPtr.Zero;
bool result = USB.Find_This_Device(Constants.MChipVendorID, Constants.Pk2DeviceID,
altID, ref usbRdTemp, ref usbWrTemp);
usbReadHandle = usbRdTemp;
usbWriteHandle = usbWrTemp;
if (result)
{
byte[] commandArray = new byte[1];
commandArray[0] = Constants.GET_FIRMWARE_VERSION;
result = writeUSB(commandArray);
if (result)
{
// read response
if (readUSB())
{
FirmwareVersion = string.Format("{0:D1}.{1:D2}.{2:D2}", Usb_read_array[1],
Usb_read_array[2], Usb_read_array[3]);
return(Constants.AltBoardUSB.found);
}
return(Constants.AltBoardUSB.readError);
}
return(Constants.AltBoardUSB.writeError);
}
return(Constants.AltBoardUSB.notFound);
}
public static bool readUSB()
{
int bytesRead = 0;
bool readResult = USB.ReadFile(usbReadHandle, Usb_read_array, Usb_read_array.Length, ref bytesRead, 0);
if (bytesRead != Usb_read_array.Length)
{
return(false);
}
return(readResult);
}
public static bool writeUSB(byte[] commandList)
{
int bytesWritten = 0;
//USB_BYTE_COUNT += commandList.Length;
//USB_BYTE_COUNT++;
Usb_write_array[0] = 0; // first byte must always be zero.
for (int index = 1; index < Usb_write_array.Length; index++)
{
Usb_write_array[index] = Constants.END_OF_BUFFER; // init array to all END_OF_BUFFER cmds.
}
Array.Copy(commandList, 0, Usb_write_array, 1, commandList.Length);
bool writeResult = USB.WriteFile(usbWriteHandle, Usb_write_array, Usb_write_array.Length, ref bytesWritten, 0);
if (bytesWritten != Usb_write_array.Length)
{
return(false);
}
return(writeResult);
}
