自学MCU-51之 8X8 LED 点阵屏静态显示

发表于 6/19/2014 11:44:35 PM 阅读（2112）

好久没来更新了，之前写的LED点阵代码一直有错误，没时间来改写，今晚终于搞定了，由于疏忽将行列独立分开导致错误，原理很简单，送一侦行数据数据，导通一列LED；循环8次正好一组数据；不多说了上代码；还有就是群主的书里内容讲解的很详细，快要胜过视屏讲解了，呵呵，好书就得有好的推荐方式才对、、、、、、

#include <reg52.h>
#include <intrins.h>

typedef signed char Int8;
typedef unsigned char Uint8;
typedef signed int Int16;
//typedef unsigned int Uint16;
#define delay_5US() _nop_(); _nop_(); _nop_(); _nop_(); _nop_();
#define Lend P0

Uint8 code zimo[] = {//0x80,0x42,0x24,0x18,0x18,0x24,0x42,0x80
//0x0C,0x12,0x22,0x44,0x44,0x22,0x12,0x0C
0x0C,0x1E,0x3E,0x7C,0x7C,0x3E,0x1E,0x0C
};

sbit sDat = P1^0;
sbit sClk = P1^2;
sbit sRck = P1^1;
sbit WELA = P1^6;
sbit DULA = P1^7;

void Init();
void Write_595_Byte(Int8 byte);
void LED_scmao();

void main()
{
Init();

while(1);

}

void Init()
{
TMOD = 0x01;
TH0 = 0xfc;
TL0 = 0x66;
EA = 1;
ET0 = 1;
TR0 = 1;
DULA = 1;
Lend = 0;
DULA = 0;
WELA = 1;
Lend = 0xff;
WELA = 0;
// sDat = 0;
// sClk = 0;
// sRck = 0;
// Lend = 0xff;
// Write_595_Byte(0);
}

void Write_595_Byte(Int8 byte)
{
Int8 i = 0;
sClk = 1;
sRck = 1;
for(i = 0;i < 8;i++)
{
sClk = 0;
delay_5US();
if(byte & 0x80)
  sDat = 1;
else
sDat = 0;

  sClk = 1;
delay_5US();
byte <<= 1;
  }
sRck = 0;
  delay_5US();
sRck = 1;
}

void LED_scmao()
{
static Int8 x = 0;

  switch(x)
{
case 0: Lend = 0xff;Write_595_Byte(zimo[x]);Lend = 0xfe; x++; break;
case 1: Lend = 0xff;Write_595_Byte(zimo[x]);Lend = 0xfd; x++; break;
case 2: Lend = 0xff;Write_595_Byte(zimo[x]);Lend = 0xfb; x++; break;
case 3: Lend = 0xff;Write_595_Byte(zimo[x]);Lend = 0xf7; x++; break;
case 4: Lend = 0xff;Write_595_Byte(zimo[x]);Lend = 0xef; x++; break;
case 5: Lend = 0xff;Write_595_Byte(zimo[x]);Lend = 0xdf; x++; break;
case 6: Lend = 0xff;Write_595_Byte(zimo[x]);Lend = 0xbf; x++; break;
case 7: Lend = 0xff;Write_595_Byte(zimo[x]);Lend = 0x7f; x = 0; break;
default:break;
}
}

void Time0() interrupt 1
{
static Int8 m = 0;

TH0 = 0xfc;
TL0 = 0x66;
m++;

if(m == 2)
{
  m = 0;
LED_scmao();
}
}