unsigned long lptwrite(void* lpt, const void* data, int len) {
LPT* plpt = (LPT*) lpt;
DWORD cmdBy[8];
DWORD readCMD = 0;
while (wait(plpt) == false) {
;
}
for (int i = 0; i < len; i++) {
//打开选通1脚
GetPortVal(plpt->ctrl, &readCMD, 1);
cmdBy[1] = readCMD | 0x09;
SetPortVal(plpt->ctrl, cmdBy[1], 1);
SetPortVal(plpt->data, *(((char*) data) + i), 1);
GetPortVal(plpt->ctrl, &readCMD, 1);
cmdBy[2] = readCMD & 0xFE;
SetPortVal(plpt->ctrl, cmdBy[2], 1);
while (wait(plpt) == false) {
;
}
}
return 0;
}
unsigned char WinIOProvider::getPort(unsigned int port)
{
Q_ASSERT(initOk);
DWORD ret;
GetPortVal(port,&ret,1);
return (int)ret;
}
static bool wait(LPT* plpt) {
byte status = 0;
DWORD dwPortVal = 0;
GetPortVal(plpt->stat, &dwPortVal, 1);
dwPortVal = dwPortVal & 0x0FF;
status = 0;
status = (byte) dwPortVal;
if ((status & 0x80) == 0x00) {
//判断S7位为低电平说明打印机不正常或忙状态,异常为0
return false;
} else if ((status & 0x20) == 0x20) {
//判断S5位为低电平说明缺纸状态,异常为1
return false;
} else if ((status & 0x10) == 0x00) {
return false;
} else if ((status & 0x08) == 0x00) {
//判断S3位为低电平说明打印机未知错误,异常为0
return false;
}
return true;
}
u32 inl(u32 addr) {
u32 val;
GetPortVal((WORD) addr, &val, 4);
return val;
}
u16 inw(u32 addr) {
u32 val;
GetPortVal((WORD) addr, &val, 2);
return val & 0xFFFF;
}
u8 inb(u32 addr) {
u32 val;
GetPortVal((WORD) addr, &val, 1);
return val & 0xFF;
}
