max7221.c

MAX7219MAX7221点亮数码管程序

#include <REG52.H>
#include <Max7221.h>

unsigned char DisplayBuffer[8]={9,1,5,3,0,4,6,7};//显示缓冲区


unsigned char code table2[]=
{0xfc, 0x60, 0xda, 0xf2, 0x66, 0xb6, 0xbe, 0xe0, 0xfe, 0xe6, 0x02};
unsigned char code table3[]=
{~0xfc, ~0x60, ~0xda, ~0xf2, ~0x66, ~0xb6, ~0xbe, ~0xe0, ~0xfe, ~0xe6, ~0x02};


unsigned char code tablea[]=
{0x01, 0x01,0x01,0x01,0x01,0x01,0x01,0x01};//段选编码
unsigned char code tableb[]=
{0x02, 0x02,0x02,0x02,0x02,0x02,0x02,0x02};//段选编码
unsigned char code tablec[]=
{0x04, 0x04,0x04,0x04,0x04,0x04,0x04,0x04};//段选编码
unsigned char code tabled[]=
{0x08, 0x08,0x08,0x08,0x08,0x08,0x08,0x08};//段选编码
unsigned char code tablee[]=
{0x10, 0x10,0x10,0x10,0x10,0x10,0x10,0x10};//段选编码
unsigned char code tablef[]=
{0x20, 0x20,0x20,0x20,0x20,0x20,0x20,0x20};//段选编码
unsigned char code tableg[]=
{0x40, 0x40,0x40,0x40,0x40,0x40,0x40,0x40};//段选编码
unsigned char code tableh[]=
{0x80, 0x80,0x80,0x80,0x80,0x80,0x80,0x80};//段选编码
void delay(void)
{   unsigned int a,b;
    a=5000;b=10;
	while(b--)
	while(a--);

}
/*此函数未调试成功*/
unsigned char change(unsigned char *tab)
{
    unsigned char tabl[8];
    
    unsigned char i;
	for(i=0;i<8;i--)
	{
	tabl[i] =(tab[i]>>7)&0x01 * (1<<7)
            +(tab[i]>>6)&0x01 * (1<<6)
			+(tab[i]>>5)&0x01 * (1<<5)
			+(tab[i]>>4)&0x01 * (1<<4)
			+(tab[i]>>3)&0x01 * (1<<3)
			+(tab[i]>>2)&0x01 * (1<<2)
			+(tab[i]>>1)&0x01 * (1<<1)
			+(tab[i]>>0)&0x01 * 1;

	}
	for(i=0;i<8;i++) tabl[i]&=0xff;
	return *tabl;
}
unsigned char code table[]=
{0x3f,0x06,0x5b,0x4f
,0x66,0x6d,0x7d,0x07,
0x7f,0x6f};//段选编码



/*从最高位到最低位依次是：hafc debg*/
unsigned char code table4[]=//这个译码数组0、123467已经改好了！ by张强
{0x7e, 0x12,  0x4f,0x5b
,0x33, 0x6d, 0x7d, 0x52,
 0x7f,0x6f};//段选编码

main()
{   unsigned char tablo[8];
	InitialMax7221();

	*tablo=change(&table);
	
	//while(1)
	{ 
	  Max7221Display(&tablo[0]);
	  //delay();
	  // Max7221Display2(&tablea[0]);

	  //delay();
	// Max7221Display2(&tableb[0]);

	  //delay();
	  //Max7221Display2(&tablec[0]);

	  //delay();
	 // Max7221Display2(&tabled[0]);

	  //delay();
	  // Max7221Display2(&tablee[0]);

	 // delay();
	 //Max7221Display2(&tablef[0]);

	 // delay();
	  //Max7221Display2(&tableg[0]);

	  
	 // Max7221Display2(&tableh[0]);
	  //delay();
	}
	while(1);

}