基于stc51单片机的指纹解锁模块

51单片机指纹解锁

main.c 文件 带注释

#include<reg52.h> 
#include<intrins.h>
#include"buzz.h"
#include"key.h"
#include"uart.h"
#include"delay.h"
#include"FPM10A.h"
#include"lcd_1602.h"
#include <stdio.h>

sbit key1  = P1^0;
sbit key2  = P1^1;
sbit key_c  = P1^5;
sbit relay  = P1^6;

unsigned char intFlag = 0; //进入模式
xdata unsigned char dis0[16];
unsigned char relayFlag = 0;  //继电器状态标志

void intoZhiWen(void);	 		//函数声明
void MY_FPM10A_Find_Fingerprint(void);


void main()
{			

   relay = 0;//继电器上电控制下 方便测试
   DelayMs(200);
   relay = 1; 
   relayFlag = 0 ;
   				
   LCD1602_Init();			//初始化液晶屏
   LCD1602_Display(0x80,"Fingerprint Test",0,16);	 //液晶开机显示界面
 	Uart_Init();			//初始化串口
   Key_Init();				//初始化按键
	DelayMs(200);DelayMs(200);DelayMs(200);          //延时500ms，等待指纹模块复位
   Device_Check();		   	//校正指纹模块是否接入正确，液晶做出相应的提示
   DelayMs(200);DelayMs(200);DelayMs(200);			//对接成功界面停留一定时间
   LCD1602_Display(0x80,"key1:int zhi wen",0,16); //显示
   LCD1602_Display(0xc0,"key2:int jdq ctr",0,16);
   do
   {
   	DelayMs(10);
   	if(key1 == 0) intFlag = 1;	//按键显示
   	if(key2 == 0) intFlag = 2;
   
   }while((key1==1)&&(key2==1));


   while(1)
   {
     if(intFlag == 1)	 //按键K1
     {intoZhiWen();}	//指纹管理模式
     else  if(intFlag == 2)
     {	
   	if(relayFlag == 1)		//显示继电器状态
   	{
   		LCD1602_Display(0xc0,"Relay State: C  ",0,16);	//显示状态
   	}
   	else
   	{
   		LCD1602_Display(0xc0,"Relay State: O  ",0,16); //显示状态
   	}
   	if(key_c == 0 )	 //按键按下 关闭继电器
   	{
   		relay = 1; 		   //继电器断开
   		relayFlag = 0 ;
   	}
   	MY_FPM10A_Find_Fingerprint(); //搜索指纹
   	DelayMs(50);				  
     }
   }
}

void OpenRelay (void) //打开继电器
{
   relay = 0; 
   relayFlag = 1 ;
}

void intoZhiWen(void)
{
       /**************进入主功能界面****************/
   	LCD1602_Display(0x80,"  search finger ",0,16);	 //第一排显示搜索指纹
   	LCD1602_Display(0xc0,"  Add     delete",0,16);	 //添加和删除指纹
   	if(local_date==0)
   	{
   		LCD1602_Display(0x80,  " *",0,2);
   		LCD1602_Display(0xc0,  "  ",0,2);
   		LCD1602_Display(0xc0+8,"  ",0,2);	
   	}
   	else if(local_date==1)
   	{
   		LCD1602_Display(0x80,  "  ",0,2);
   		LCD1602_Display(0xc0,  " *",0,2);
   		LCD1602_Display(0xc0+8,"  ",0,2);	
   	}
   	else if(local_date==2)
   	{
   		LCD1602_Display(0x80,  "  ",0,2);
   		LCD1602_Display(0xc0,  "  ",0,2);
   		LCD1602_Display(0xc0+8," *",0,2);	
   	}			
   	//确认键
   	if(KEY_OK == 0)
   	{	 
   	 	while(KEY_OK == 0);//等待松开按键								
   		switch(local_date)
   		{
   				case 0:  //搜索指纹				
   				FPM10A_Find_Fingerprint();																								
   				break;	
   				
   				case 1:	 //添加指纹
   				FPM10A_Add_Fingerprint();
   				break; 					
   				
   				case 2:	//清空指纹
   				FPM10A_Delete_All_Fingerprint();
   	  			break;
   			}
   		}
   	    //切换键
   		if(KEY_DOWN == 0)
   		{
   		 	while(KEY_DOWN == 0); //等待松开按键				
     	 		if(local_date<=2)
   			{
   				local_date++;
   				if(local_date==3)
   					local_date=0;						
   			}		
   		}						
   		DelayMs(20); //延时判断100ms检测一次
}

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相关原理图

图片：
基于51单片机指纹管理门禁系统设计-模块框图：

基于51单片机指纹管理门禁系统设计-流程图

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