单片机设计指纹识别系统

一、电路设计

此电路由最小系统板、LCD1602液晶模块和AS608指纹模块组成。

二、运行效果

三、主代码

/*想要更多项目私wo!!!*/

#include "sys.h"

#include "delay.h"

#include "usart.h"

#include "lcd.h"

#include "key.h"

#include "touch.h"   

#include "malloc.h" 

#include "usmart.h"  

#include "MMC_SD.h"   

#include "ff.h"  

#include "exfuns.h"    

#include "fontupd.h"

#include "text.h"

#include "usart2.h"

#include "AS608.h"

#include "timer.h"

#define usart2_baund  57600//串口2波特率，根据指纹模块波特率更改

SysPara AS608Para;//指纹模块AS608参数

u16 ValidN;//模块内有效模板个数

u8** kbd_tbl;

const  u8* kbd_menu[15]={"del_fp"," : ","add_fp","1","2","3","4","5","6","7","8","9","DEL","0","Enter",};//按键表

const  u8* kbd_delFR[15]={"BACK"," : ","del_all","1","2","3","4","5","6","7","8","9","DEL","0","Enter",};//按键表

void Add_FR(void); //录指纹

void Del_FR(void); //删除指纹

void press_FR(void);//刷指纹

void ShowErrMessage(u8 ensure);//显示确认码错误信息

void AS608_load_keyboard(u16 x,u16 y,u8 **kbtbl);//加载虚拟键盘

u8  AS608_get_keynum(u16 x,u16 y);//获取键盘数

u16 GET_NUM(void);//获取数值  

int main(void)

{  

u8 ensure;

u8 key_num;

char *str;

  Stm32_Clock_Init(9); //系统时钟设置

delay_init(72);   //延时初始化

uart_init(72,115200); //串口1初始化，用于支持USMART    

LCD_Init(); //初始化液晶 

KEY_Init(); //按键初始化       

usmart_dev.init(72); //usmart初始化

  usart2_init(36,usart2_baund); //初始化串口2,用于与指纹模块通讯

PS_StaGPIO_Init();   //初始化FR读状态引脚

tp_dev.init(); //触摸屏初始化

  mem_init(); //初始化内存池     

  exfuns_init(); //为fatfs相关变量申请内存  

  f_mount(fs[1],"1:",1); //挂载FLASH.

POINT_COLOR=RED;

while(font_init()) //检查字库

{     

LCD_ShowString(60,50,240,16,16,"Font Error!");

delay_ms(200);   

LCD_Fill(60,50,240,66,WHITE);//清除显示

delay_ms(200);

}

if(!(tp_dev.touchtype&0x80))//如果是电阻屏

{

Show_Str_Mid(0,30,"Adjust the touch screen?",16,240);

POINT_COLOR=BLUE;

Show_Str_Mid(0,60,"YES: KEY1   NO: KEY0",16,240);

while(1)

{

key_num=KEY_Scan(0);

if(key_num==KEY0_PRES)

break;

if(key_num==KEY1_PRES)

{

LCD_Clear(WHITE);

TP_Adjust();  //屏幕校准 

TP_Save_Adjdata();//保存校准参数

break;

}

}

}

/*加载指纹识别实验界面*/

LCD_Clear(WHITE);

POINT_COLOR=RED;

Show_Str_Mid(0,0,"AS608 Fingerprint module test",16,240);          

Show_Str_Mid(0,20,"Author: @ALIENTEK",16,240);      

  POINT_COLOR=BLUE;

Show_Str_Mid(0,40,"Connect with AS608....",16,240);

while(PS_HandShake(&AS608Addr))//与AS608模块握手

{

LCD_Fill(0,40,240,80,WHITE);

Show_Str_Mid(0,40,"Cannot connect with AS608!",16,240);

delay_ms(1000);

LCD_Fill(0,40,240,80,WHITE);

Show_Str_Mid(0,40,"Try to connect again....",16,240);

delay_ms(1000);   

}

LCD_Fill(0,40,240,320,WHITE);

Show_Str_Mid(0,40,"Connect success!",16,240);//通讯成功

str=mymalloc(30);

sprintf(str,"Baudrate:%d   Addr:%x",usart2_baund,AS608Addr);//显示波特率

Show_Str(0,60,240,16,(u8*)str,16,0);

delay_ms(100);

ensure=PS_ValidTempleteNum(&ValidN);//读库指纹个数

if(ensure!=0x00)

ShowErrMessage(ensure);//显示确认码错误信息

ensure=PS_ReadSysPara(&AS608Para);  //读AS608模块参数 

if(ensure==0x00)

{

mymemset(str,0,50);

sprintf(str,"RemainNum:%d    Level:%d",AS608Para.PS_max-ValidN,AS608Para.PS_level);//显示剩余指纹数量和安全等级

Show_Str(0,80,240,16,(u8*)str,16,0);

}

else

ShowErrMessage(ensure);

myfree(str);

AS608_load_keyboard(0,170,(u8**)kbd_menu);//加载虚拟键盘

while(1)

{

key_num=AS608_get_keynum(0,170);

if(key_num)

{

if(key_num==1)Del_FR(); //删指纹

if(key_num==3)Add_FR(); //录指纹

}

if(PS_Sta) //检测PS_Sta状态，如果有手指按下

{

press_FR();//刷指纹

}  

}

}