private DeviceInfo(string path, string name, ushort vendorID, ushort productID, ushort version)
{
// remember the settings
this.path = path;
this.name = name;
this.vendorID = (ushort)vendorID;
this.productID = (ushort)productID;
this.version = version;
// set some defaults
PlungerEnabled = true;
JoystickEnabled = false;
TvOnEnabled = false;
// open the USB interface
this.fp = OpenFile();
// presume valid
isValid = true;
// assume the maximum input (device to host) report length
inputReportLength = 65;
// Check the HID interface to see if the HID Usage type is
// type 4, for Joystick. If so, the joystick interface is
// enabled, which the device uses to send nudge and plunger
// readings. If not, the joystick interface is disabled, so
// the device only sends private status messages and query
// responses.
IntPtr ppdata;
if (HIDImports.HidD_GetPreparsedData(this.fp, out ppdata))
{
// Check the usage. If the joystick is enabled, the
// usage will be 4 = Joystick (on usage page 1, "generic
// desktop"). If not, the usage is 0 = Undefined, indicating
// our private status and query interface.
HIDImports.HIDP_CAPS caps;
HIDImports.HidP_GetCaps(ppdata, out caps);
bool isJoystick = caps.UsagePage == 1 && caps.Usage == 4;
bool isPrivate = caps.UsagePage == 1 && caps.Usage == 0;
if (isJoystick)
{
this.JoystickEnabled = true;
}
// Only count this as a control interface if it's the joystick
// interface or the private interface. The device can expose
// other interfaces for device-to-host inputs only, such as a
// keyboard interface and a media key interface. Also ignore
// it if it doesn't accept output reports (host-to-device),
// as indicated by a zero output report length.
if (!(isJoystick || isPrivate) || caps.OutputReportByteLength == 0)
{
isValid = false;
}
// remember the input report (device to host) length
inputReportLength = caps.InputReportByteLength;
// free the preparsed data
HIDImports.HidD_FreePreparsedData(ppdata);
}
else
{
// couldn't get the HID caps - mark as invalid
isValid = false;
}
// if it looks like a valid interface so far, try reading a status report
byte[] buf;
if (isValid)
{
buf = ReadUSB();
if (buf != null)
{
// parse the reponse
this.PlungerEnabled = (buf[1] & 0x01) != 0;
}
else
{
// couldn't read a report - mark it as invalid
isValid = false;
}
}
// Ask about the TV ON feature. This is config variable 9; the
// results are: [0] power status input pin; [1] latch output pin;
// [2] relay trigger pin; [3,4] delay time in 10ms increments.
// This is enabled only if all pins are assigned and the delay
// is non-zero.
if (isValid && (buf = QueryConfigVar(9)) != null)
{
int delay = buf[3] | (buf[4] << 8);
this.TvOnEnabled =
(buf[0] != 0xFF && buf[1] != 0xFF && buf[2] != 0xFF &&
delay != 0);
}
// figure the LedWiz unit number
LedWizUnitNo = (vendorID == 0xFAFA ? ((productID & 0x0F) + 1) : 0);
// get more data if the unit is responding
if (isValid)
{
// get the CPU ID
this.CPUID = QueryCPUID();
this.OpenSDAID = QueryOpenSDAID();
// get the pinscape unit number
if ((buf = QueryConfigVar(2)) != null)
{
PinscapeUnitNo = buf[0];
}
// get the build ID
String s;
QueryBuildID(out this.BuildDD, out this.BuildTT, out s);
this.BuildID = s;
}
}
