?? main.c
字號:
#include "reg51.h"
sbit cs_ad = P1^0;
sbit rd_ad = P1^1;
sbit wr_ad = P1^2;
sbit cs_da = P1^3;
sbit wr1_da = P1^4;
sbit xfer_da = P1^5;
sbit wr2_da = P1^6;
sbit ile_da = P1^7;
sbit intr = P3^0;
char Read_ad(void);
void delay(char time);
void Write_da(char dat);
void main(void)
{
char dat2,temp;
P1=0xff;
while(1)
{
dat2=Read_ad();
temp=(~P3)&0x1e;
temp>>=1;
switch(temp)
{
case 0x01: dat2+=20;break;
case 0x02: dat2-=20;break;
case 0x04: dat2*=2;break;
case 0x08: dat2/=2;break;
default : break;
}
Write_da(dat2);
}
}
void delay(char time)
{
char count;
for(count=0;count<time;count++);
}
char Read_ad(void)
{
char dat;
cs_ad=0;
wr_ad=0;
delay(2);
wr_ad=1;
cs_ad=1;
while(intr==1);
cs_ad=0;
rd_ad=0;
delay(2);
dat=P0;
rd_ad=1;
cs_ad=1;
return dat;
}
void Write_da(char dat)
{
ile_da=1;
cs_da=0;
P2=dat;
wr1_da=0;
delay(5);
wr1_da=1;
cs_da=1;
ile_da=0;
wr2_da=0;
xfer_da=0;
delay(2);
xfer_da=1;
wr2_da=1;
}
?? 快捷鍵說明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -