用24C04与1602LCD设计电子密码锁完全代码.docxVIP

#includereg52.h#includestring.h#includeintrins.h#include lcd_1602.h#include key.h#include IIC_24C04.h#define uchar unsigned char#define uint unsigned int//上次按键和当前按键序号，该矩阵中序号范围0~15,16表示无按键uchar pre_keyno=16,keyno=16;uchar code Title_Text[]=your password...;//标题字符串uchar DSY_BUFFER[16]= ;//显示缓冲uchar userpassword[7]= ;//用户输入的密码uchar IIC_Password[7];uchar IS_Valid_User = 0;uchar i = 0;void Beep();uchar Clear_Password();sbit LED_OPEN = P2^0;//开锁灯亮sbit BEEP = P3^7;//蜂鸣器//===================================================//延时................void delay(uint x){ uchar i; while (x--) for(i=0;i120;i++);}//蜂鸣器子程序 void beep(){ uchar i; for(i=0;i100;i++) { BEEP=~ BEEP; } BEEP=0; }// 清除密码 void clear_password(){ uchar i; for(i=0; i6; i++) { userpassword[i] = ; DSY_BUFFER[i] = ;} }// 主程序初始化void init_main(){ P0 = 0xFF; P1 = 0xFF; P2 = 0xFF; TMOD = 0x02; //T0设置为8位自动重装模式 TH0 = 175; TL0 = 175; TR0 = 1; //启动T0 delay(10); lcd_init(); IIC_24C04_Init(); //初始化24C04 } // 键盘执行功能 void key_main() { P1 = 0xF0; if(P1 != 0xF0) keyno = keys_scan(); //扫描键盘获取键序号KeyNo if(pre_keyno != keyno) { if(i=6){ switch ( keyno ) { case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: case 8: case 9: //if ( i= 6 ) //密码限制在6位以内 // { //如果i为0则执行一次清屏 if (i == 0) display_string( ,0x40); userpassword[i] = keyno + 0; userpassword[i+1] = ; //DSY_BUFFER[i] = userpassword[i]; DSY_BUFFER[i] = *; DSY_BUFFER[i+1] = ; display_string(DSY_BUFFER,0x40); i++; // } break; case 10: //按A键开锁 if (strcmp(userpassword,IIC_Password) == 0) { LED_OPEN = 0; //点亮LED Clear_Password(); display_string(Unlock OK! ,0x40); IS_Valid_User = 1; } else { LED_OPEN =1; //关闭LED Clear_Password(); display_string(ERROR ! ,0x40); IS_Valid_User = 0; } i = 0; break; case 11: //按B键上锁 LED_OPEN =1; Clear_Password(); display_string(Title_Text,0x00); display_string( ,0x40); i = 0; IS_Valid_User = 0