max7219 4个联接，如何制作一个时钟

ID:577423 · 发表于 2019-12-21 21:41

#include <reg52.h>
#include <intrins.h>
#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[4][8]={
{0x81,0x7e,0x7e ,0x7e,0x7e,0x7e,0x7e,0x61},
{ 0x18,0x24,0x42,0x81,0x41,0x22,0x14,0x8},

/*{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<x;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)
{
uchar i,j;
Delay_xms(50);
Init_MAX7219();
while(1)
{
  for(j=0;j<4;j++)
  {
for(i=1;i<9;i++)
Write_Max7219(i,disp1[j][i-1]);
Delay_xms(1000);
  }
}
}

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