driver.c

用于IO端口等PC机驱动

#include <sys/io.h>
#include <stdio.h>
#define SPPDATA(addr) addr
#define STATUSPORT(addr) addr+1
#define CONTROLPORT(addr) addr+2
#define ADDRPORT(addr) addr+3
#define DATAPORT(addr) addr+4
#define uchar unsigned char
#define uint unsigned int


int main(void)
{
int i;
uint pulse[3],scale[3];
uint dac;
float  dac_tmp;
uchar send;
uchar rev[16];
uchar  dir=0x00;
iopl(3);


while(1)
{		
		//脉冲数
		outb(0x00,0x37A);
		outb(0x04,0x37A);
		outb(0x10,0x37B);
		for(i=0;i<3;i++)
		{
//			scale[i]=(0x1250>>i);
			scale[i]=125;
			send=(uchar)((scale[i]>>16)&0x000000ff);	
			outb(send,0x37C);
			send=(uchar)((scale[i]>>8)&0x000000ff);
			outb(send,0x37c);
			send=(uchar)(scale[i]&0x000000ff);
			outb(send,0x37c);

			pulse[i]=0x000050;
			send=(uchar)((pulse[i]>>16)&0x000000ff);
			outb(send,0x37C);
			send=(uchar)((pulse[i]>>8)&0x000000ff);
			outb(send,0x37c);
			send=(uchar)(pulse[i]&0x000000ff);	
			outb(send,0x37c);
		}
		//方向
		outb(dir,0x37c);
		//dac
		dac_tmp=3;
		dac=(uint)(dac_tmp/4*4095);
		send=(uchar)(dac&0x000000ff);
		outb(send,0x37c);
		send=(uchar)((dac>>8)&0x000000ff);
		outb(send,0x37c);	
		//I/O
		dac=0x00ffffff;
		send =(uchar)(dac&0x000000ff);
		outb(send,0x37c);
		send=(uchar)((dac>>8)&0x000000ff);
		outb(send,0x37c);
		send=(uchar)((dac>>16)&0x000000ff);
		outb(send,0x37c);

		//读数据
		usleep(1000);
		outb(0x40,0x37B);

		outb(0x20,0x37A);
		outb(0x24,0x37A);
		rev[0]=inb(0x37b);
		for(i=0;i<16;i++)
		{
			rev[i]=inb(0x37c);
			printf("%02x",rev[i]);
			if(i==2)
				printf("; ");
			if(i==5)
				printf("; ");
			if(i==8)
				printf("; ");
		}
		printf("\n");
/*		rev[i]=inb(0x37c);
		printf("%02x\n",rev[0]);*/

/*			outb(0x00,0x37A);
			outb(0x04,0x37A);
			outb(0x40,0x37B);
			usleep(1000000);
			outb(0x20,0x37A);
			outb(0x24,0x37A);
			for(i=0;i<3;i++)
			{
				rev[i]=inb(0x37c);
				printf("%x",rev[i]);
				usleep(1000000);
			}
			printf("\n");
			outb(0x00,0x37A);
			outb(0x04,0x37A);
			outb(0x43,0x37B);
			outb(0x20,0x37A);
			outb(0x24,0x37A);
			for(i=3;i<6;i++)
			{
				rev[i]=inb(0x37c);
				printf("%x",rev[i]);
			}
			printf("\n");
			outb(0x00,0x37A);
			outb(0x04,0x37A);
			outb(0x46,0x37B);
			outb(0x20,0x37A);
			outb(0x24,0x37A);
			for(i=6;i<9;i++)
			{
				rev[i]=inb(0x37c);
				printf("%x",rev[i]);
			}
			printf("\n");*/
//		usleep(interval);
}
		
	return 0;
}