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：

#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。