//for converting a struct to byte array
public static byte[] getBytesGDJ(GetDataJoy gdj, int size)
{
var arr = new byte[size];
var ptr = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(gdj, ptr, false);
Marshal.Copy(ptr, arr, 0, size);
Marshal.FreeHGlobal(ptr);
return(arr);
}
//for converting a byte array to struct
static GetDataJoy fromBytes(byte[] arr)
{
var str = new GetDataJoy();
var size = Marshal.SizeOf(str);
var ptr = Marshal.AllocHGlobal(size);
Marshal.Copy(arr, 0, ptr, size);
str = (GetDataJoy)Marshal.PtrToStructure(ptr, str.GetType());
Marshal.FreeHGlobal(ptr);
return(str);
}
//here we get data from the joystick
void Get_Data_From_Joystick()
{
var JoyData = new GetDataJoy();
//convert struct to buffer
var buf = getBytesGDJ(JoyData, Marshal.SizeOf(JoyData));
//send empty buffer to driver
HID.ReadData(buf, (uint)Marshal.SizeOf(JoyData));
var jd = fromBytes(buf);
pbX.Value = jd.X;
pbY.Value = jd.Y;
pbZ.Value = jd.Z;
pbrX.Value = jd.rX;
pbrY.Value = jd.rY;
pbrZ.Value = jd.rZ;
pbSlider.Value = jd.slider;
pbWheel.Value = jd.wheel;
pbDial.Value = jd.dial;
lbHatData.Content = jd.hat.ToString();
//let's convert the button bit array to two strings for display
string s;
s = Convert.ToString(jd.btn0, 2).PadLeft(8, '0');
s = s + " " + Convert.ToString(jd.btn1, 2).PadLeft(8, '0');
s = s + " " + Convert.ToString(jd.btn2, 2).PadLeft(8, '0');
s = s + " " + Convert.ToString(jd.btn3, 2).PadLeft(8, '0');
s = s + " " + Convert.ToString(jd.btn4, 2).PadLeft(8, '0');
s = s + " " + Convert.ToString(jd.btn5, 2).PadLeft(8, '0');
s = s + " " + Convert.ToString(jd.btn6, 2).PadLeft(8, '0');
s = s + " " + Convert.ToString(jd.btn7, 2).PadLeft(8, '0');
lbButtonsData1.Content = s;
s = Convert.ToString(jd.btn8, 2).PadLeft(8, '0');
s = s + " " + Convert.ToString(jd.btn9, 2).PadLeft(8, '0');
s = s + " " + Convert.ToString(jd.btn10, 2).PadLeft(8, '0');
s = s + " " + Convert.ToString(jd.btn11, 2).PadLeft(8, '0');
s = s + " " + Convert.ToString(jd.btn12, 2).PadLeft(8, '0');
s = s + " " + Convert.ToString(jd.btn13, 2).PadLeft(8, '0');
s = s + " " + Convert.ToString(jd.btn14, 2).PadLeft(8, '0');
s = s + " " + Convert.ToString(jd.btn15, 2).PadLeft(8, '0');
lbButtonsData2.Content = s;
}
