iic.h

使用LPT口

#include "common.h"
#include <winioctl.h>

	int i;
	CHAR op1=1;
//	CHAR op;
	ULONG addr;
	ULONG size=1;
	ULONG data;
	HANDLE hPortIo;
//	CHAR buffer[128];
	BOOL status;
	ULONG nBytesReturned;
	ULONG PortHandle;

	PORTOPENPARAMS OpenPort;
	PORTREADPARAMS ReadPort;
	PORTWRITEPARAMS WritePort;
	PORTCLOSEPARAMS ClosePort;

// -------------------------------------------------------------------------
//
// Main
//
//void test(int Band,int StartCode);



void _Outport (unsigned short nAddr , int nData);
int _Inport (int nAddr);



void _Openport (int addr)
{
		OpenPort.open_Address = addr;
		OpenPort.open_PortSize = 1;
		OpenPort.open_PortCount = 1;

		status = DeviceIoControl(
			hPortIo, 
			IOCTL_PORTIO_OPENPORT, 
			&OpenPort, 
			sizeof(OpenPort),
			&PortHandle,
			sizeof(PortHandle),
			&nBytesReturned,
			NULL
			);
		if ( !status || (PortHandle == NULL) )
		{	::MessageBox(NULL,"不能打开端口","",MB_OK);
	    	exit(0);
		}
}
void _Outport (unsigned short nAddr, int nData)
{
		addr = nAddr;
		data = nData;
		OpenPort.open_Address = addr;
		OpenPort.open_PortSize = 1;
		OpenPort.open_PortCount = 1;

		status = DeviceIoControl(
			hPortIo, 
			IOCTL_PORTIO_OPENPORT, 
			&OpenPort, 
			sizeof(OpenPort),
			&PortHandle,
			sizeof(PortHandle),
			&nBytesReturned,
			NULL
			);
		if ( !status || (PortHandle == NULL) )
		{	::MessageBox(NULL,"不能打开端口","",MB_OK);
	    	exit(0);
		}

		WritePort.wr_Handle = PortHandle;
		WritePort.wr_Index = 0;
		WritePort.wr_Data = data;

		status = DeviceIoControl(
			hPortIo, 
			IOCTL_PORTIO_WRITEPORT, 
			&WritePort, 
			sizeof(WritePort),
			NULL,
			0,
			&nBytesReturned,
			NULL
			);

		if ( !status )
		{
		    ::MessageBox(NULL,"写端口失败","",MB_OK);
	    	exit(0);
		}
}
int _Inport (int nAddr)
{
        addr = nAddr;
		OpenPort.open_Address = addr;
		OpenPort.open_PortSize = 1;
		OpenPort.open_PortCount = 1;

		status = DeviceIoControl(
			hPortIo, 
			IOCTL_PORTIO_OPENPORT, 
			&OpenPort, 
			sizeof(OpenPort),
			&PortHandle,
			sizeof(PortHandle),
			&nBytesReturned,
			NULL
			);
		if ( !status || (PortHandle == NULL) )
		{	::MessageBox(NULL,"不能打开端口","",MB_OK);
	    	exit(0);
		}
			ReadPort.rd_Handle = PortHandle;
			ReadPort.rd_Index = 0;	

			status = DeviceIoControl(
				hPortIo, 
				IOCTL_PORTIO_READPORT, 
				&ReadPort, 
				sizeof(ReadPort),
				&data,
				sizeof(data),
				&nBytesReturned,
				NULL
				);
		if ( !status || (PortHandle == NULL) )
		{	::MessageBox(NULL,"读端口失败","",MB_OK);
	    	exit(0);
		}
        return (data);

}



//#include <conio.h>

//#define Port_DO0 0x378
//#define Port_DO1 0x301
//#define Port_DI0 0x302
//#define Port_DI1 0x303

__int8 wPortState;
bool bDelay;
//bool FALSE;
//bool TRUE;
double Volt_Set[7],Volt_Read[7];
double Current_Read[7];

void __cdecl usTime_Delay(unsigned long usTime);
void __cdecl Out_Bit();

void __cdecl Set_Bit(int DBIT,int D01);
void __cdecl IIC_Start(void);
void __cdecl IIC_Stop(void);
void __cdecl IIC_Clock(void);
void __cdecl IIC_Write(int DATA);
int __cdecl IIC_Read(int InBit);

void __cdecl _Openport (int addr);

void __cdecl usTime_Delay(unsigned long usTime)
{
	unsigned long II=0;
	while(II<usTime*2)
		II++;
	//Sleep(msTime);
}

void __cdecl Out_Bit()
{
	_Outport(0x37a,wPortState);
/*	if(bDelay==FALSE)
		usTime_Delay(1);
	else
		usTime_Delay(3);*/
	
}

void __cdecl Set_Bit(int DBIT,int D01)
{
	int LLL;
	wPortState=(wPortState & ((1<<DBIT)^0xff)) | (D01*(1<<DBIT));
	if(D01==0)
		bDelay=FALSE;//usTime_Delay(10);
	else
		bDelay=TRUE;//usTime_Delay(50);
	LLL=~wPortState;
}

void __cdecl IIC_Start(void)
{
    Set_Bit(0,1);
	Out_Bit();
    Set_Bit(1,1);
    Out_Bit();
    Set_Bit(0,0);
    Out_Bit();
    Set_Bit(1,0);
	Out_Bit();
}

void __cdecl IIC_Stop(void)
{
    Set_Bit(0,0);
	Out_Bit();
    Set_Bit(1,0);
    Out_Bit();
    Set_Bit(1,1);
    Out_Bit();
    Set_Bit(0,1);
	Out_Bit();
	Set_Bit(1,0);
    Out_Bit();
//	IIC_Clock();
}

void __cdecl IIC_Clock(void)
{
    Set_Bit(1,0);
    Out_Bit();
    Set_Bit(1,1);
    Out_Bit();
    Set_Bit(1,0);
	Out_Bit();
}



void __cdecl IIC_Write(int DATA)
{
	int Bit=0,DBit=0,j;
	for(int i=7;i>-1;i--)
	{
		Bit=(DATA>>i) & 0x1;
		Set_Bit(0,Bit);
		Out_Bit();
		IIC_Clock();
		DBit=DBit+(Bit<<i);
		j=1;
	}
	Set_Bit(0,1);
	Out_Bit();
	IIC_Clock();
	if(DBit==DATA)
		;
	else
		j=0;
//	Sleep(10);
}


int __cdecl IIC_Read(void)
{
	int Bit=0;
	
	__int16 InPort=0;

	for(int i=7;i>-1;i--)
	{
		InPort=_Inport(0x379);
	
		switch(i)
		{
			case 0:
				Bit=Bit+(((InPort >> 5) & 0x1) << 0);
				break;
			case 1:
				Bit=Bit+(((InPort >> 5) & 0x1) << 1);
				break;
			case 2:
				Bit=Bit+(((InPort >> 5) & 0x1) << 2);
				break;
			case 3:
				Bit=Bit+(((InPort >> 5) & 0x1) << 3);
				break;
			case 4:
				Bit=Bit+(((InPort >> 5) & 0x1) << 4);
				break;
			case 5:
				Bit=Bit+(((InPort >> 5) & 0x1) << 5);
				break;
			case 6:
				Bit=Bit+(((InPort >> 5) & 0x1) << 6);
				break;
			case 7:
				Bit=Bit+(((InPort >> 5) & 0x1) << 7);
				break;
		}
		IIC_Clock();
		usTime_Delay(1000);
	}
	
	Set_Bit(0,0);
	Out_Bit();
	IIC_Clock();
	Set_Bit(0,1);
	Out_Bit();

	return Bit;
}


int IIC_Scan()

{	int Bit2=0;
		for (int Bit1=0;Bit1<10;)
	{
		Bit2=_Inport(0x379);
		Bit2=Bit2 & 0x20 ;
		IIC_Stop();
		if (Bit2==0) 
			{Bit1++;}
		else 
			{Bit1=0;break;}
	}
return Bit1;
}