芯片复制单片机计数方波脉冲个数
单片机源程序如下:
- 芯片复制#include <reg51.h>
- 芯片复制#include "intrins.h"
- sbit DIN = P0^0;
- sbit load = P0^1;
- sbit CLK = P0^2;
- sbit LED = P0^7;
- unsigned int speed = 0x00;
- unsigned int count = 0x00;
- unsigned char table[]={0x7e,0x30,0x6d,0x79,0x33,0x5b,0x5f,0x70,0x7f,0x7b,0x77,0x1f,0x4e,0x3d,0x4f,0x47,0x67,0x3e,0x0ff,0x00};
- void int_count(void)
- {
- EA = 0x00;
- TMOD = 0x01;
- TH0 = 0x3c; //12M 50ms
- TL0 = 0x0b0;
-
- ET0 = 1;
- EA = 1;
- TR0 = 1;
- IT0 = 1;
- EX0 = 1;
- }
- void sendbyte(unsigned char dat)
- {
- unsigned char i,temp;
- _nop_();
- for(i=0;i<8;i++)
- {
- temp = dat&0x80;
- dat=dat<<1;
- if(temp)
- DIN = 1;
- else
- DIN = 0;
- CLK = 0;
- _nop_();
- CLK = 1;
- }
- }
- void sendword(unsigned char addr,unsigned char dat)
- {
- load = 0;
- _nop_();
- sendbyte(addr);
- _nop_();
- sendbyte(dat);
- _nop_();
- load = 1;
- }
- void int7219(void)
- {
- sendword(0x0c,0x01);
- sendword(0x0a,0x09);
- sendword(0x0b,0x03);
- sendword(0x09,0x00);
- sendword(0x0f,0x00);
- }
- void display(void)
- {
- unsigned char i,tmp;
- tmp = count / 100;
- sendword(0x02,table[tmp]);
- tmp = count % 100;
- i = tmp / 10;
- sendword(0x03,table[i]);
- i = tmp % 10;
- sendword(0x04,table[i]);
- }
芯片解密
