51单片机的集成逻辑门测试仪的设计(电路+程序) -

/*-----------------------------数字集成电路芯片测试仪C程序-清单------------------------------*/
//修改时间：2018
//-------------------------------------------------------------------------------------------
#include<reg52.h>
#include <intrins.h>
#include <stdio.h>
//这是头文件必须包含
/*==============================宏定义==============================*/
#define LCD_data P0 //数据口
#define M 4 //要测试的芯片好坏的个数
#define N 8
#define input1 P1 //用于检测的引脚
#define input2 P2
/*======================液晶宏定义、初始化引脚=========================*/
void delay(unsigned int z);
void charfill(unsigned char c); //整屏显示A代表的ASCII字符子程序
void putstrxy(unsigned char cx,unsigned char cy,unsigned char code *s);//在(cx,cy)字符位置写字符串子程序
void putstr(unsigned char code *s); //定位写字符串子程序
void putchars(unsigned char c); //在(CXPOS,CYPOS)字符位置写字符子程序
unsigned char getchars(void); //CXPOS,CYPOS)字符位置读字符子程序
void charlcdpos(void); //设置(CXPOS,CYPOS)字符位置的DDRAM地址
void charcursornext(void); //置字符位置为下一个有效位置子程序
void lcdreset(void); //SMC1602系列液晶显示控制器初始化子程序
void delay3ms(void); //延时3MS子程序
void lcdwc(unsigned char c); //送控制字到液晶显示控制器子程序
void lcdwd(unsigned char d); //送控制字到液晶显示控制器子程序
unsigned char lcdrd(void); //读数据子程序
void lcdwaitidle(void); //忙检测子程序
unsigned char data CXPOS; //列方向地址指针(用于CHARLCDPOS子程序)
unsigned char data CYPOS; //行方向地址指针(用于CHARLCDPOS子程序)
sbit RSPIN = P3^5; //RS对应单片机引脚
sbit RWPIN = P3^4; //RW对应单片机引脚
sbit EPIN = P3^3; //E对应单片机引脚
/*==============================宏定义==============================*/
unsigned char detect(); //自动检测引脚
/*=============================定义按键=============================*/
sbit key1=P3^0; // 选择检测芯片
sbit key2=P3^1; // 确定选择的芯片
sbit key3=P3^2; // 自动检测
sbit key4=P3^6; // 继电器的切换
unsigned char *name[]={"74LS00 Y=/AB","74LS04 Y=/A","74LS20 Y=/ABCD","74LS86 Y=/A⊕B","74LS74","74LS92","ERROR"};
/*==============================按键的标志位=========================*/
unsigned char flag=0; //要选择的芯片型号在已定义字符数组中的序号
unsigned char flag1=0;
unsigned char flag2=0; //用来标示某芯片各通道检测均完好的标志位
unsigned char k=0; //返回自动检测后芯片序号在已定义的数组中的序号
unsigned char code LS00[4][4]={
0x3f,0x3f,0x1b,0x1b, //74ls00
0x24,0x24,0x24,0x24,
0x36,0x36,0x36,0x36,
0x2d,0x2d,0x2d,0x2d,
};
unsigned char code LS04[2][4]={
0x2a,0x2a,0x2a,0x2a, //74ls04
0x3f,0x3f,0x15,0x15,
};
unsigned char code LS20[16][4]={
0x24,0x24,0x24,0x24, //74ls20
0x25,0x25,0x25,0x25,
0x26,0x26,0x26,0x26,
0x27,0x27,0x27,0x27,
0x2c,0x2c,0x2c,0x2c,
0x2d,0x2d,0x2d,0x2d,
0x2e,0x2e,0x2e,0x2e,
0x2f,0x2f,0x2f,0x2f,
0x34,0x34,0x34,0x34,
0x35,0x35,0x35,0x35,
0x36,0x36,0x36,0x36,
0x37,0x37,0x37,0x37,
0x3c,0x3c,0x3c,0x3c,
0x3d,0x3d,0x3d,0x3d,
0x3e,0x3e,0x3e,0x3e,
0x3f,0x3f,0x1f,0x1f,
};
unsigned char code LS86[4][4]={
0x24,0x24,0x00,0x00, //74ls86
0x36,0x36,0x36,0x36,
0x2d,0x2d,0x2d,0x2d,
0x3f,0x3f,0x1b,0x1b,
};
unsigned char code IC[M][N]={
0x24,0x24,0x24,0x24,0x3f,0x3f,0x1b,0x1b, //7400
0x3f,0x3f,0x15,0x15,0x3f,0x3f,0x15,0x15, //7404
0x3f,0x3f,0x1f,0x1f,0x3f,0x3f,0x1f,0x1f, //7420
0x3f,0x3f,0x1b,0x1b,0x3f,0x3f,0x1b,0x1b, //7486
};
void main()
{
unsigned char i,output1,output2;
lcdreset(); //液晶显示控制器初始化
putstrxy(0,0,"PLEASE CHOOSE 74LS CHIP"); //显示欢迎界面
while(1)
{
if(key1==0)
{
delay(100);
if(key1==0)
{
if(flag==4)
{
flag=0;
}
flag++;
switch(flag)
{
case 1:charfill(' '); putstrxy(0,0,"NOW '74LS00'");break;
case 2:charfill(' '); putstrxy(0,0,"NOW '74LS04'");break;
case 3:charfill(' '); putstrxy(0,0,"NOW '74LS20'");break;
case 4:charfill(' '); putstrxy(0,0,"NOW '74LS86'");
}
}
}
if(flag==1&&key2==0)
{
for(i=0;i<4;i++)
{
input1=LS00[i][0];
input2=LS00[i][1];
delay(5);
output1=input1&0x3f;
output2=input2&0x3f;
if(output1!=LS00[i][2]||output2!=LS00[i][3])
{
putstrxy(0,1,"SORRY,BAD CHIP!");
flag2=0;
break;
}
if(output1==LS00[i][2]&&output2==LS00[i][3])
{
flag2++;
}
}
if(flag2==4)
{
putstrxy(0,1,"OK,GOOD CHIP!");
flag2=0;
}
}
if(flag==2&&key2==0)
{
for(i=0;i<2;i++)
{
input1=LS04[i][0];
input2=LS04[i][1];
delay(5);
output1=input1&0x3f;
output2=input2&0x3f;
if(output1!=LS04[i][2]||output2!=LS04[i][3])
{
putstrxy(0,1,"SORRY,BAD CHIP!");
flag2=0;
break;
}
if(output1==LS04[i][2]&&output2==LS04[i][3])
{
flag2++;
}
}
if(flag2==2)
{
putstrxy(0,1,"OK,GOOD CHIP!");
flag2=0;
}
}
if(flag==3&&key2==0)
{
for(i=0;i<16;i++)
{
input1=LS20[i][0];
input2=LS20[i][1];
delay(5);
output1=input1&0x3f;
output2=input2&0x3f;
if(output1!=LS20[i][2]||output2!=LS20[i][3])
{
putstrxy(0,1,"SORRY,BAD CHIP!");
flag2=0;
break;
}
if(output1==LS20[i][2]&&output2==LS20[i][3])
{
flag2++;
}
}
if(flag2==16)
{
putstrxy(0,1,"OK,GOOD CHIP!");
flag2=0;
}
}
if(flag==4&&key2==0)
{
for(i=0;i<4;i++)
{
input1=LS86[i][0];
input2=LS86[i][1];
delay(5);
output1=input1&0x3f;
output2=input2&0x3f;
if(output1!=LS86[i][2]||output2!=LS86[i][3])
{
putstrxy(0,1,"SORRY,BAD CHIP!");
flag2=0;
break;
}
if(output1==LS86[i][2]&&output2==LS86[i][3])
{
flag2++;
}
}
if(flag2==4)
{
putstrxy(0,1,"OK,GOOD CHIP!");
flag2=0;
}
}
if(key3==0)
{
k=detect();
charfill(' ');
putstrxy(0,0,"This is:");
putstrxy(0,5,name[k]);
}
}
}
//延时函数
void delay(unsigned int z)
{
unsigned int x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
/*============================14脚芯片识别函数=======================*/
unsigned char detect() //14脚芯片识别函数
{
unsigned char i,output1,output2;
//7474的检测
P1=0xff; //初始化测试端口
P2=0xff;
input1=0x3b;
input2=0x39;
delay(5);
input1=0x3f; //上升沿
input2=0x3d;
delay(5);
output1=input1&0x3f;
output2=input2&0x3f;
if(output1==0x1f&&output2==0x2d)
{
return (4);
}
//7400/04/20/86的自动检测
P1=0xff; //初始化测试端口
P2=0xff;
for(i=0;i<M;i++)
{
input1=IC[i][0];
input2=IC[i][1];
delay(5);
output1=input1&0x3f; //将芯片逻辑结果input1通过&0x3f取出
output2=input2&0x3f;
if(output1==IC[i][2]&&output2==IC[i][3])
{
input1=IC[i][4];
input2=IC[i][5];
delay(5);
output1=input1&0x3f;
output2=input2&0x3f;
if(output1==IC[i][6]&&output2==IC[i][7])
{
return i;
}
}
}
key4=0; //检测7492时，先用继电器江电源供电引脚切换
P1=0xff; //初始化测试端口
P2=0xff;
input1=0x3f; //7492的检测
input2=0x3f;
delay(5);
output1=input1&0x3f;
output2=input2&0x3f;
if(output1==0x3f&&output2==0x01)
{
delay(100);key4=1;return (5);
}
delay(100);
key4=1; //测试结束，将电源供电引脚切换回原状态
return (6);
}
//-------------------------------------------------------------------------------
void charfill(unsigned char c) //整屏显示A代表的ASCII字符子程序
{ for(CXPOS=CYPOS=0;1;)
{ putchars(c); //定位写字符
charcursornext(); //置字符位置为下一个有效位置
if((CXPOS==0) && (CYPOS==0)) break;
}
}
//子程序名称:void putstrxy(unsigned char cx,unsigned char cy,unsigned char *s).
//功能:在(cx,cy)字符位置写字符串.
//-------------------------------------------------------------------------------
void putstrxy(unsigned char cx,unsigned char cy,unsigned char code *s)
{ //在(cx,cy)字符位置写字符串子程序
CXPOS=cx; //置当前X位置为cx
CYPOS=cy; //置当前Y位置为cy
for(;*s!=0;s++) //为零表示字符串结束,退出
{ putchars(*s); //写1个字符
charcursornext(); //字符位置移到下一个
}
}
//-------------------------------------------------------------------------------
//子程序名称:void putstr(unsigned char *s).
//功能:在(CXPOS,CYPOS)字符位置写字符串.
//-------------------------------------------------------------------------------
void putstr(unsigned char code *s) //定位写字符串子程序
{ for(;*s!=0;s++) //为零表示字符串结束,退出
{ putchars(*s); //写1个字符
charcursornext(); //字符位置移到下一个
}
}
//-------------------------------------------------------------------------------
//子程序名称:void putchar(unsigned char c).
//功能:在(CXPOS,CYPOS)字符位置写字符.
//-------------------------------------------------------------------------------
void putchars(unsigned char c) //在(CXPOS,CYPOS)字符位置写字符子程序
{
charlcdpos(); //设置(CXPOS,CYPOS)字符位置的DDRAM地址
lcdwd(c); //写字符
}
//-------------------------------------------------------------------------------
//子程序名称:unsigned char getchar(void).
//功能:在(CXPOS,CYPOS)字符位置读字符.
//-------------------------------------------------------------------------------
unsigned char getchars(void) //在(CXPOS,CYPOS)字符位置读字符子程序
{
charlcdpos(); //设置(CXPOS,CYPOS)字符位置的DDRAM地址
return lcdrd(); //读字符
}
//-------------------------------------------------------------------------------
//以下charlcdpos,charcursornext,lcdreset为HD44780兼容芯片的液晶显示控制器的
//16字符X2行的SMC1602系列标准字符点阵型液晶显示模块的接口程序.
//-------------------------------------------------------------------------------
//子程序名称:void charlcdpos(void).
//功能:设置(CXPOS,CYPOS)字符位置的DDRAM地址.
//-------------------------------------------------------------------------------
void charlcdpos(void) //设置(CXPOS,CYPOS)字符位置的DDRAM地址
{
CXPOS&=0X0f; //X位置范围(0到15)
CYPOS&=0X01; //Y位置范围(0到1)
if(CYPOS==0) //(第一行)X: 第0----15个字符
lcdwc(CXPOS|0x80); // DDRAM: 0----0FH
else //(第二行)X: 第0----15个字符
lcdwc(CXPOS|0xC0); // DDRAM: 40----4FH
}
//-------------------------------------------------------------------------------
//子程序名称:void charcursornext(void).
//功能:置字符位置为下一个有效位置.
//-------------------------------------------------------------------------------
void charcursornext(void) //置字符位置为下一个有效位置子程序
{
CXPOS++; //字符位置加1
if(CXPOS>15) //字符位置CXPOS>15表示要换行
{ CXPOS=0; //置列位置为最左边
CYPOS++; //行位置加1
CYPOS&=0X1; //字符位置CYPOS的有效范围为(0到1)
}
}
//-------------------------------------------------------------------------------
//子程序名称:void lcdreset(void).
//功能:液晶显示控制器初始化.
//-------------------------------------------------------------------------------
void lcdreset(void) //SMC1602系列液晶显示控制器初始化子程序
{ //1602的显示模式字为0x38
lcdwc(0x38); //显示模式设置第一次
delay3ms(); //延时3MS
lcdwc(0x38); //显示模式设置第二次
delay3ms(); //延时3MS
lcdwc(0x38); //显示模式设置第三次
delay3ms(); //延时3MS
lcdwc(0x38); //显示模式设置第四次
delay3ms(); //延时3MS
lcdwc(0x08); //显示关闭
lcdwc(0x01); //清屏
delay3ms(); //延时3MS
lcdwc(0x06); //显示光标移动设置
lcdwc(0x0C); //显示开及光标设置
}
void delay3ms(void) //延时3MS子程序
{ unsigned char i,j,k;
for(i=0;i<3;i++)
for(j=0;j<64;j++)
for(k=0;k<51;k++);
}
//-------------------------------------------------------------------------------
//以下lcdwc,lcdwd,lcdrd为HD44780兼容芯片的MCS51模拟口线方式的基本子程序,
//lcdwaitidle为内部子程序.
//-------------------------------------------------------------------------------
//子程序名称:void lcdwc(unsigned char c).
//功能:送控制字到液晶显示控制器.
//-------------------------------------------------------------------------------
void lcdwc(unsigned char c) //送控制字到液晶显示控制器子程序
{
lcdwaitidle(); //HD44780液晶显示控制器忙检测
RSPIN=0; //RS=0 RW=0 E=高电平
RWPIN=0;
P0=c;
EPIN=1;
_nop_();
EPIN=0;
}
//-------------------------------------------------------------------------------
//子程序名称:void lcdwd(unsigned char d).
//功能:送数据到液晶显示控制器.
//-------------------------------------------------------------------------------
void lcdwd(unsigned char d) //送控制字到液晶显示控制器子程序
{
lcdwaitidle(); //HD44780液晶显示控制器忙检测
RSPIN=1; //RS=1 RW=0 E=高电平
RWPIN=0;
P0=d;
EPIN=1;
_nop_();
EPIN=0;
}
//-------------------------------------------------------------------------------
//子程序名称:unsigned char lcdrd(void).
//功能:读数据到液晶显示控制器.
//-------------------------------------------------------------------------------
unsigned char lcdrd(void) //读数据子程序
{ unsigned char d;
lcdwaitidle(); //HD44780液晶显示控制器忙检测
P0=0xff;
RSPIN=1; //RS=1 RW=1 E=高电平
RWPIN=1;
EPIN=1;
_nop_();
d=P0;
EPIN=0;
return d;
}
//-------------------------------------------------------------------------------
//子程序名称:void lcdwaitidle(void).
//功能:忙检测.
//-------------------------------------------------------------------------------
void lcdwaitidle(void) //忙检测子程序
{ unsigned char i;
P0=0xff;
RSPIN=0; //RS=0 RW=1 E=高电平
RWPIN=1;
EPIN=1;
for(i=0;i<20;i++)
if((P0&0x80) == 0) break; //D7=0 表示LCD控制器空闲,则退出检测
EPIN=0;
}

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