写一份AS608指纹模块与STC89C52单片机的连接电路分析
时间: 2024-06-02 14:07:52 浏览: 195
好的,请给我一些时间处理一下。在AS608指纹模块与STC89C52单片机之间,我们需要进行串口通信。因此,将AS608的TX引脚连接到STC89C52的P3.0引脚,将AS608的RX引脚连接到STC89C52的P3.1引脚。如果需要将多个指纹模块接入同一单片机,可以通过与单片机的中断端口INT相连来实现指纹识别的中断触发。同时,指纹模块的VCC和GND引脚连接到单片机的5V电源和GND,注意电源电压要保持稳定。这样就可以完成AS608指纹模块与STC89C52的连接电路分析。
相关问题
STC89C52使用AS608指纹模块,并在lcd1602液晶屏显示出结果
以下是使用STC89C52单片机和AS608指纹识别模块,同时在LCD1602液晶屏上显示结果的示例代码,仅供参考:
```c
#include "reg52.h"
#include "stdio.h"
#include "lcd1602.h"
#define uchar unsigned char
#define uint unsigned int
sbit SDA=P1^1; //定义SDA引脚
sbit SCL=P1^0; //定义SCL引脚
void delay(uint i) //延时函数
{
while(i--);
}
void start() //起始信号
{
SDA=1;
SCL=1;
delay(100);
SDA=0;
delay(100);
SCL=0;
}
void stop() //停止信号
{
SDA=0;
SCL=1;
delay(100);
SDA=1;
delay(100);
}
uchar ACK() //应答信号
{
uchar ack;
SDA=1;
delay(10);
SCL=1;
delay(10);
ack=SDA;
SCL=0;
delay(10);
return ack;
}
void send_byte(uchar dat) //发送一个字节
{
uchar i;
for(i=0;i<8;i++)
{
SDA=dat>>7;
dat<<=1;
SCL=1;
delay(10);
SCL=0;
delay(10);
}
}
uchar read_byte() //读取一个字节
{
uchar i,dat=0;
for(i=0;i<8;i++)
{
SCL=1;
delay(10);
dat<<=1;
dat|=SDA;
SCL=0;
delay(10);
}
return dat;
}
void write_cmd(uchar cmd) //写命令
{
start();
send_byte(0x55);
ACK();
send_byte(0xAA);
ACK();
send_byte(0xF5);
ACK();
send_byte(cmd);
ACK();
stop();
}
uchar read_cmd(uchar cmd) //读命令
{
uchar dat;
start();
send_byte(0x55);
ACK();
send_byte(0xAA);
ACK();
send_byte(0xF5);
ACK();
send_byte(cmd);
ACK();
SDA=1;
SCL=1;
delay(10);
dat=SDA;
SCL=0;
delay(10);
stop();
return dat;
}
void write_data(uchar addr,uchar dat) //写数据
{
start();
send_byte(0x55);
ACK();
send_byte(0xAA);
ACK();
send_byte(0xF5);
ACK();
send_byte(0x01);
ACK();
send_byte(addr);
ACK();
send_byte(dat);
ACK();
stop();
}
uchar read_data(uchar addr) //读数据
{
uchar dat;
start();
send_byte(0x55);
ACK();
send_byte(0xAA);
ACK();
send_byte(0xF5);
ACK();
send_byte(0x02);
ACK();
send_byte(addr);
ACK();
SDA=1;
SCL=1;
delay(10);
dat=SDA;
SCL=0;
delay(10);
stop();
return dat;
}
void init() //初始化LCD1602液晶屏
{
lcd1602_init();
lcd1602_write_string(0,0,"Fingerprint test:");
}
void main()
{
uchar i,dat;
TMOD=0x20;
TH1=0xFD;
TL1=0xFD;
TR1=1;
SCON=0x50;
init();
write_cmd(0x01); //初始化指纹模块
delay(10000);
write_cmd(0x12); //手动采集指纹
delay(10000);
for(i=0;i<200;i++) //查询指纹是否采集成功
{
if(read_cmd(0x14)==0x00)
{
lcd1602_write_string(0,1,"Fingerprint collected successfully!");
break;
}
delay(10000);
}
if(i>=200)
{
lcd1602_write_string(0,1,"Fingerprint collection failed!");
return;
}
write_cmd(0x15); //上传指纹特征值
for(i=0;i<200;i++) //查询指纹上传是否成功
{
if(read_cmd(0x14)==0x00)
{
dat=read_data(0x02);
lcd1602_write_string(0,1,"Fingerprint feature value:");
lcd1602_write_data(23,1,dat+'0');
break;
}
delay(10000);
}
if(i>=200)
{
lcd1602_write_string(0,1,"Fingerprint feature value upload failed!");
return;
}
while(1);
}
```
此代码仅供参考,具体操作需要根据实际情况进行修改。同时需要注意LCD1602液晶屏的驱动代码需要另外添加。
as608指令c语言,stc89c52+AS608的使用,要代码
以下是使用STC89C52单片机和AS608指纹识别模块的示例代码,仅供参考:
```c
#include "reg52.h"
#include "stdio.h"
#define uchar unsigned char
#define uint unsigned int
sbit SDA=P1^1; //定义SDA引脚
sbit SCL=P1^0; //定义SCL引脚
void delay(uint i) //延时函数
{
while(i--);
}
void start() //起始信号
{
SDA=1;
SCL=1;
delay(100);
SDA=0;
delay(100);
SCL=0;
}
void stop() //停止信号
{
SDA=0;
SCL=1;
delay(100);
SDA=1;
delay(100);
}
uchar ACK() //应答信号
{
uchar ack;
SDA=1;
delay(10);
SCL=1;
delay(10);
ack=SDA;
SCL=0;
delay(10);
return ack;
}
void send_byte(uchar dat) //发送一个字节
{
uchar i;
for(i=0;i<8;i++)
{
SDA=dat>>7;
dat<<=1;
SCL=1;
delay(10);
SCL=0;
delay(10);
}
}
uchar read_byte() //读取一个字节
{
uchar i,dat=0;
for(i=0;i<8;i++)
{
SCL=1;
delay(10);
dat<<=1;
dat|=SDA;
SCL=0;
delay(10);
}
return dat;
}
void write_cmd(uchar cmd) //写命令
{
start();
send_byte(0x55);
ACK();
send_byte(0xAA);
ACK();
send_byte(0xF5);
ACK();
send_byte(cmd);
ACK();
stop();
}
uchar read_cmd(uchar cmd) //读命令
{
uchar dat;
start();
send_byte(0x55);
ACK();
send_byte(0xAA);
ACK();
send_byte(0xF5);
ACK();
send_byte(cmd);
ACK();
SDA=1;
SCL=1;
delay(10);
dat=SDA;
SCL=0;
delay(10);
stop();
return dat;
}
void write_data(uchar addr,uchar dat) //写数据
{
start();
send_byte(0x55);
ACK();
send_byte(0xAA);
ACK();
send_byte(0xF5);
ACK();
send_byte(0x01);
ACK();
send_byte(addr);
ACK();
send_byte(dat);
ACK();
stop();
}
uchar read_data(uchar addr) //读数据
{
uchar dat;
start();
send_byte(0x55);
ACK();
send_byte(0xAA);
ACK();
send_byte(0xF5);
ACK();
send_byte(0x02);
ACK();
send_byte(addr);
ACK();
SDA=1;
SCL=1;
delay(10);
dat=SDA;
SCL=0;
delay(10);
stop();
return dat;
}
void main()
{
uchar i,dat;
TMOD=0x20;
TH1=0xFD;
TL1=0xFD;
TR1=1;
SCON=0x50;
write_cmd(0x01); //初始化指纹模块
delay(10000);
write_cmd(0x12); //手动采集指纹
delay(10000);
for(i=0;i<200;i++) //查询指纹是否采集成功
{
if(read_cmd(0x14)==0x00)
{
printf("Fingerprint collected successfully!\n");
break;
}
delay(10000);
}
if(i>=200)
{
printf("Fingerprint collection failed!\n");
return;
}
write_cmd(0x15); //上传指纹特征值
for(i=0;i<200;i++) //查询指纹上传是否成功
{
if(read_cmd(0x14)==0x00)
{
dat=read_data(0x02);
printf("Fingerprint feature value: %d\n",dat);
break;
}
delay(10000);
}
if(i>=200)
{
printf("Fingerprint feature value upload failed!\n");
return;
}
while(1);
}
```
此代码仅供参考,具体操作需要根据实际情况进行修改。
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