private int[] CheckPaperStatus()
{
try
{
string sVid = txtVID.Text;
int iVid = Int32.Parse(sVid, NumberStyles.HexNumber);
string sPid = txtPID.Text;
int iPid = Int32.Parse(sPid, NumberStyles.HexNumber);
byte[] byteArray = new byte[3];
byteArray[0] = 0x10;
byteArray[1] = 0x04;
byteArray[2] = 4;
byte[] read = USB.WriteAndRead(iVid, iPid, byteArray);
if (read == null || read.Length == 0)
{
return new int[] { 500, 500 }
}
;
int[] ret = new int[2] {
0, 0
};
var bit2 = (read[0] & (1 << 2)) != 0; // Near End
var bit3 = (read[0] & (1 << 3)) != 0; // Near End
var bit5 = (read[0] & (1 << 5)) != 0; // Out of Paper
var bit6 = (read[0] & (1 << 6)) != 0; // Out of Paper
if (bit2 || bit3)
{
ret[0] = 1;
}
if (bit5 || bit6)
{
ret[1] = 1;
}
return(ret);
}
catch (Exception ex)
{
throw ex;
}
}
private string CheckA4PrinterStatus()
{
try
{
string sVid = txtVID.Text;
int iVid = Int32.Parse(sVid, NumberStyles.HexNumber);
string sPid = txtPID.Text;
int iPid = Int32.Parse(sPid, NumberStyles.HexNumber);
byte[] byteArray = new byte[3];
byteArray[0] = 0x10;
byteArray[1] = 0x04;
byteArray[2] = 4;
byte[] read = USB.WriteAndRead2(iVid, iPid, byteArray);
return(GetString(read));
}
catch (Exception ex)
{
throw ex;
}
}