一个AT24C02和串口的程序，请教前辈们2个问题

勤奋的菜鸟

*************************************程序************************************************
#include <reg52.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int
uchar num1,b,flag;
uchar num2,num3,num4;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};


sbit sda=P3^5;
sbit scl=P3^6;
sbit key=P3^2;
sbit key1=P3^3;
sbit key2=P3^4;
void delay()
{;;}
void start() //开始信号
{
sda=1;
delay();
scl=1;
delay();
sda=0;
delay();
}




void stop() //停止
{
sda=0;
delay();
scl=1;
delay();
sda=1;
delay();
}


void respons() //应答
{
uchar i;
scl=1;
delay();
while((sda==1)&&(i<250))i++;
scl=0;
delay();
}


void init()
{
sda=1;
delay();
scl=1;
delay();
SCON=0x50;
TMOD=0x20;
TL1=0xFa;
TH1=0XFa;
TR1=1;
ES=1;
EA=1;
num1=44;
}


void write_byte(uchar date)
{
uchar i,temp;
temp=date;




for(i=0;i<8;i++)
{
temp=temp<<1;
scl=0;
delay();
sda=CY;
delay();
scl=1;
delay();
//scl=0;
// delay();
}
scl=0;
delay();
sda=1;
delay();
}


uchar read_byte()
{
uchar i,k;
scl=0;
delay();
sda=1;
delay();
for(i=0;i<8;i++)
{
scl=1;
delay();
k=(k<<1)|sda;
scl=0;
delay();
}
return k;
}


void delay1(uchar x)
{
uchar a,b;
for(a=x;a>0;a--)
for(b=100;b>0;b--);
}


void write_add(uchar address,uchar date)
{
start();
write_byte(0xa0);
respons();
write_byte(address);
respons();
write_byte(date);
respons();
stop();
}


uchar read_add(uchar address)
{
uchar date;
start();
write_byte(0xa0);
respons();
write_byte(address);
respons();
start();
write_byte(0xa1);
respons();
date=read_byte();
stop();
return date;
}
void display(uchar shi_h,uchar ge_h)
{
P2=0xfb;
P0=table[ge_h];
delay1(5);

P2=0xf7;
P0=table[shi_h];
delay1(5);

shi_h=num1/10;
ge_h=num1%10;


}


void keyscan()
{
if(key1==0)
{
delay1(5);
if(key1==0)
{ 


flag=1;
ES=0;
SBUF=num1;
delay1(500);
while(!TI);
TI=0;
ES=1;
while(!key1);

}
}
if(key==0)
{
delay1(5);


}
}


void main()
{

init();

num1=read_add(1);
write_add(1,num1); 
while(1)
{
keyscan();
if(flag==1)
display(num1/10,num1%10);




}
}


void ser()interrupt 4
{
while(RI!=1);
RI=0;
b=SBUF;

}


*****************************************************************************************************
结果串口发送的num1是在串口在助手显示的是“，”
另外请教前辈们 我要写入三个英文字符进AT24C02而且同样可以用串口发出来的应该怎么写 弄了2天了还是弄不出来。求指教

八度空间

可以用原子哥的串口调试组件USMART，论坛有下载

勤奋的菜鸟

回复【2楼】八度空间:
---------------------------------
#include <reg52.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int
uchar num1,b,flag;
uchar code table_2[]="郑更濠";
uchar code table_1[]="44";
uchar data table_3[2];
uchar data table_4[6];
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};

sbit sda=P3^5;
sbit scl=P3^6;
sbit key=P3^2;
sbit key1=P3^3;
sbit key2=P3^4;
void delay()
{;;}
void start()  //开始信号
{
sda=1;
delay();
scl=1;
delay();
sda=0;
delay();
}


void stop()   //停止
{
sda=0;
delay();
scl=1;
delay();
sda=1;
delay();
}

void respons()  //应答
{
uchar i;
scl=1;
delay();
while((sda==1)&&(i<250))i++;
scl=0;
delay();
}

void init()
{
sda=1;
delay();
scl=1;
delay();
SCON=0x50;
TMOD=0x20;
TL1=0xFa;
TH1=0XFa;
TR1=1;
ES=1;
EA=1;
num1=44;
}

void write_byte(uchar date)
{
uchar i,temp;
temp=date;


for(i=0;i<8;i++)
{
temp=temp<<1;
scl=0;
    delay();
sda=CY;
delay();
scl=1;
delay();
// scl=0;
     //   delay();
}
scl=0;
delay();
sda=1;
delay();
}

uchar read_byte()
{
uchar i,k;
scl=0;
delay();
sda=1;
delay();
for(i=0;i<8;i++)
{
scl=1;
delay();
k=(k<<1)|sda;
scl=0;
delay();
}
return k;
}

void delay1(uchar x)
{
uchar a,b;
for(a=x;a>0;a--)
 for(b=100;b>0;b--);
}

void write_add(uchar address,uchar date)
{
start();
write_byte(0xa0);
respons();
write_byte(address);
respons();
write_byte(date);
respons();
stop();
}

uchar read_add(uchar address)
{
uchar date;
start();
write_byte(0xa0);
respons();
write_byte(address);
respons();
start();
write_byte(0xa1);
respons();
date=read_byte();
stop();
return date;
}
void display(uchar shi_h,uchar ge_h)
{
P2=0xfb;
P0=table[ge_h];
delay1(5);

P2=0xf7;
P0=table[shi_h];
delay1(5);

shi_h=num1/10;
ge_h=num1%10;

}

void keyscan()
{
uchar i;
if(key1==0)
{
delay1(5);
if(key1==0)
{    
for(i=0;i<2;i++)
{
write_add(0x01+i,table_1);
flag=1;
ES=0;
SBUF=table_3;
delay1(500);
while(!TI);
TI=0;
}
ES=1;
while(!key1);
delay1(500);
while(!key1);
}
}
if(key==0)
{
delay1(5);
if(key==0)
{    
for(i=0;i<6;i++)
{
write_add(0x05+i,table_2);
ES=0;
SBUF=table_4;
delay1(500);
while(!TI);
TI=0;
}
ES=1;
while(!key);
delay1(500);
while(!key);
}
}
}

void main()
{
uchar i,t;
init();

for(i=0;i<2;i++)
table_3=read_add(0x01+i);
num1=atoi(table_3);
for(t=0;t<6;t++)
table_4[t]=read_add(0x05+t); 
while(1)
{

keyscan();
if(flag==1)
display(num1/10,num1%10);


}
}

void ser()interrupt 4
{
while(RI!=1);
RI=0;
b=SBUF;

}

**************************************************************************************************
这个今晚调出来的 把num1=44换成table_1[]="44"两个字节写进去 然后再把字符串用atoi转换成数字给num1 。程序大部分功能能实现，只不过是名字发到串口助手上还是会有些乱码而已。

八度空间

回复【3楼】勤奋的菜鸟:
---------------------------------
你串口能正常打印东西啵？

勤奋的菜鸟

回复【4楼】八度空间:
---------------------------------
对的 可以正常打印

八度空间

回复【5楼】勤奋的菜鸟:
---------------------------------
仔细看下程序还有什么地方不对吧，IIC这东西时序对了都好办

op5726170

存储芯片好像不支持英文存储吧！你可以吧英文转换成ASCII码（即十六进制）存入24C02,在把ASCII吗读出来写入SBUF发给电脑，电脑串口工具以ASCII码显示

正点原子

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