max7219.h

PWM电机正反转C程序！包括电路图！很受欢迎的！

#ifndef _MAX7219_LED_DRIVER
#define _MAX7219_LED_DRIVER
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int
sbit Max7219DIN=P3^3;
sbit Max7219CS=P3^4;
sbit Max7219CLK=P3^5;
uchar dig[8];
void WriteMax7219(uchar Address,uchar Data)
{
	uchar i;
	Max7219CS = 0;
	for (i=0;i<8;i++)
	{
		Max7219CLK = 0;
		Max7219DIN = (Address&(0x80>>i)) ? 1:0;
		_nop_();
		_nop_();
		Max7219CLK = 1;
		_nop_();
		_nop_();
	}
	for (i=0;i<8;i++)
	{
		Max7219CLK = 0;
		Max7219DIN = (Data&(0x80>>i)) ? 1:0;
		_nop_();
		_nop_();
		Max7219CLK = 1;
		_nop_();
		_nop_();
	}
	Max7219CS = 1;	
}

void InitialMax7219(void)
{
  WriteMax7219(0x0A,0x04);
  WriteMax7219(0x0B,0x07);
  WriteMax7219(0x0C,0x01);
  WriteMax7219(0x09,0xFF);
}
void display(uint t)
{    
	uchar i;
    if(t>=10000&&t<=65535)
	{
	 dig[0]=15;
	 dig[1]=15;
	 dig[2]=15;
	 dig[3]=(t/10000)%10;
	 dig[4]=(t/1000)%10;
	 dig[5]=(t/100)%10;
	 dig[6]=(t/10)%10;
	 dig[7]=(t/1)%10;
	}

	if(t>=1000&&t<=9999)        	
	{
	 dig[0]=15;
	 dig[1]=15;
	 dig[2]=15;
	 dig[3]=15;
	 dig[4]=(t/1000)%10;
	 dig[5]=(t/100)%10;
	 dig[6]=(t/10)%10;
	 dig[7]=(t/1)%10;	
	}
		
	if(t>=100&&t<=999)                                     	
	{
	 dig[0]=15;
	 dig[1]=15;
	 dig[2]=15;
	 dig[3]=15;
	 dig[4]=15;
	 dig[5]=(t/100)%10;
	 dig[6]=(t/10)%10;
	 dig[7]=(t/1)%10;
	}

	if(t>=10&&t<=99)                                      	
	{
	 dig[0]=15;
	 dig[1]=15;
	 dig[2]=15;
	 dig[3]=15;
	 dig[4]=15;
	 dig[5]=15;
	 dig[6]=(t/10)%10;
	 dig[7]=(t/1)%10;
	}

	if(t>=0&&t<10)                                       	
	{
	 dig[0]=15;
	 dig[1]=15;
	 dig[2]=15;
	 dig[3]=15;
	 dig[4]=15;
	 dig[5]=15;
	 dig[6]=15;
	 dig[7]=(t/1)%10;
       }

     for(i=0;i<8;i++)
      {
	     WriteMax7219(i+1,dig[i]);
	  }
}  
#endif