2020年12月25日 | 表白神器 MAX7219点阵驱动程序

MAX7219驱动点阵的原理图如下：

单片机+MAX7219点阵源程序如下:

#include

#include

#define uchar unsigned char

#define uint  unsigned int

//定义Max7219端口

sbit Max7219_pinCLK = P2^2;

sbit Max7219_pinCS  = P2^1;

sbit Max7219_pinDIN = P2^0;

uchar code disp1[38][8]={

{0x3C,0x42,0x42,0x42,0x42,0x42,0x42,0x3C},//0

{0x10,0x18,0x14,0x10,0x10,0x10,0x10,0x10},//1

{0x7E,0x2,0x2,0x7E,0x40,0x40,0x40,0x7E},//2

{0x3E,0x2,0x2,0x3E,0x2,0x2,0x3E,0x0},//3

{0x8,0x18,0x28,0x48,0xFE,0x8,0x8,0x8},//4

{0x3C,0x20,0x20,0x3C,0x4,0x4,0x3C,0x0},//5

{0x3C,0x20,0x20,0x3C,0x24,0x24,0x3C,0x0},//6

{0x3E,0x22,0x4,0x8,0x8,0x8,0x8,0x8},//7

{0x0,0x3E,0x22,0x22,0x3E,0x22,0x22,0x3E},//8

{0x3E,0x22,0x22,0x3E,0x2,0x2,0x2,0x3E},//9

{0x8,0x14,0x22,0x3E,0x22,0x22,0x22,0x22},//A

{0x3C,0x22,0x22,0x3E,0x22,0x22,0x3C,0x0},//B

{0x3C,0x40,0x40,0x40,0x40,0x40,0x3C,0x0},//C

{0x7C,0x42,0x42,0x42,0x42,0x42,0x7C,0x0},//D

{0x7C,0x40,0x40,0x7C,0x40,0x40,0x40,0x7C},//E

{0x7C,0x40,0x40,0x7C,0x40,0x40,0x40,0x40},//F

{0x3C,0x40,0x40,0x40,0x40,0x44,0x44,0x3C},//G

{0x44,0x44,0x44,0x7C,0x44,0x44,0x44,0x44},//H

{0x7C,0x10,0x10,0x10,0x10,0x10,0x10,0x7C},//I

{0x3C,0x8,0x8,0x8,0x8,0x8,0x48,0x30},//J

{0x0,0x24,0x28,0x30,0x20,0x30,0x28,0x24},//K

{0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x7C},//L

{0x81,0xC3,0xA5,0x99,0x81,0x81,0x81,0x81},//M

{0x0,0x42,0x62,0x52,0x4A,0x46,0x42,0x0},//N

{0x3C,0x42,0x42,0x42,0x42,0x42,0x42,0x3C},//O

{0x3C,0x22,0x22,0x22,0x3C,0x20,0x20,0x20},//P

{0x1C,0x22,0x22,0x22,0x22,0x26,0x22,0x1D},//Q

{0x3C,0x22,0x22,0x22,0x3C,0x24,0x22,0x21},//R

{0x0,0x1E,0x20,0x20,0x3E,0x2,0x2,0x3C},//S

{0x0,0x3E,0x8,0x8,0x8,0x8,0x8,0x8},//T

{0x42,0x42,0x42,0x42,0x42,0x42,0x22,0x1C},//U

{0x42,0x42,0x42,0x42,0x42,0x42,0x24,0x18},//V

{0x0,0x49,0x49,0x49,0x49,0x2A,0x1C,0x0},//W

{0x0,0x41,0x22,0x14,0x8,0x14,0x22,0x41},//X

{0x41,0x22,0x14,0x8,0x8,0x8,0x8,0x8},//Y

{0x0,0x7F,0x2,0x4,0x8,0x10,0x20,0x7F},//Z

{0x8,0x7F,0x49,0x49,0x7F,0x8,0x8,0x8},//中

{0xFE,0xBA,0x92,0xBA,0x92,0x9A,0xBA,0xFE},//国

};

void Delay_xms(uint x)

{

uint i,j;

for(i=0;i  for(j=0;j<112;j++);

}

//--------------------------------------------

//功能：向MAX7219(U3)写入字节

//入口参数：DATA

//出口参数：无

//说明：

void Write_Max7219_byte(uchar DATA)         

{

            uchar i;   

                Max7219_pinCS=0;               

            for(i=8;i>=1;i--)

          {                  

            Max7219_pinCLK=0;

            Max7219_pinDIN=DATA&0x80;

            DATA=DATA<<1;

            Max7219_pinCLK=1;

           }                                 

}

//-------------------------------------------

//功能：向MAX7219写入数据

//入口参数：address、dat

//出口参数：无

//说明：

void Write_Max7219(uchar address,uchar dat)

{

     Max7219_pinCS=0;

         Write_Max7219_byte(address);           //写入地址，即数码管编号

     Write_Max7219_byte(dat);               //写入数据，即数码管显示数字

         Max7219_pinCS=1;                        

}

void Init_MAX7219(void)

{

Write_Max7219(0x09, 0x00);       //译码方式：BCD码

Write_Max7219(0x0a, 0x03);       //亮度

Write_Max7219(0x0b, 0x07);       //扫描界限；8个数码管显示

Write_Max7219(0x0c, 0x01);       //掉电模式：0，普通模式：1

Write_Max7219(0x0f, 0x00);       //显示测试：1；测试结束，正常显示：0

}

void main(void)

{

……………………