51 MCU 12864 display electronic password lock source code-EEWORLD

Collect

TIME[4]--;

if((TIME[4]&0x0f)==0x0f)

{

TIME[4]&=0xf0;

TIME[4]|=0x09;

}

if(TIME[4]==0x00)

TIME[4]=0x12;

LCD12864_WriteCmd(0x90+3);

Ds1302Write(0,'0'+TIME[4]);

LCD12864_WriteData('0'+TIME[4]/16);//month

LCD12864_WriteData('0'+(TIME[4]&0x0f));

}break;

case 7: //year

{

TIME[6]--;

if((TIME[6]&0x0f)==0x0f)

{

TIME[6]&=0xf0;

TIME[6]|=0x09;

}

if(TIME[6]==0xf9)

TIME[6]=0x99;

LCD12864_WriteCmd(0x90+1);

Ds1302Write(0,'0'+TIME[6]);

LCD12864_WriteData('0'+TIME[6]/16);//year

LCD12864_WriteData('0'+(TIME[6]&0x0f));

}break;

}//switch

}

} //while

}

//==================================Interrupt handling function==============================//

// is an interrupt after the number of errors reaches a certain number

void init_irq1()interrupt 1 using 0

{

TH0=(65536-50000)/256;

TL0=(65536-50000)%256;

a++;

if(a>=20)

{

a=0; //When a is greater than or equal to 20, it means one second has passed

miao--; //After five incorrect attempts, the screen will be locked for 1 minute before you can enter the password

clock(3,miao);

}

if(miao<=0)

{

TR0=0;

miao=59; //When the countdown is completed, reset the time to one minute, which is 60

LCD12864_SetWindow(2,0," ");

LCD12864_SetWindow(3,0," ");

LCD12864_SetWindow(2,1,"Single-Chip Microcomputer Laboratory"); //Write the first line of information. This information will not be changed in the main loop, so write it before while

LCD12864_SetWindow(3,1,"Enter the eight-digit password");

flag_time2=0;

}

//================================Password input (password modification)=============================//

void MIMA_input()

{

unsigned char i=0,m,k=1,flag7 = 1;

if(flag5 == 1)

{

if(k2 == 0)

{

delay(5);

if(k2 == 0) //If the scan is a valid key value, process it

{

flag7 = 0;

flag8 = 1;

if(i == 0)

LCD12864_WriteCmd(0x01); //When inputting the first character, you need to clear the line to facilitate viewing the password

if(p==1) //Change personal password

{

LCD12864_SetWindow(0,0,"Modify personal password");

LCD12864_SetWindow(1,2,"New Password");

LCD12864_SetWindow(2,1,"Please enter password");

LCD12864_WriteCmd(0x0c);

}

if(p==0) //Change the administrator password

{

LCD12864_SetWindow(0,0,"Change administrator password");

LCD12864_SetWindow(1,2,"New Password");

LCD12864_SetWindow(2,1,"Please enter password");

LCD12864_WriteCmd(0x0c);

}

for(i = 0; i < 8 ; i++) //The password is 8 digits. If it is greater than 8 digits, no more key input will be performed.

{

delay(10);

m=0XFF;

while(m==0XFF)

{

m=KeyPro(); //Scan the keyboard

if(m == 11)

{

delay(20);

if(m == 11)

{

i= -1; //Count clear

LCD12864_SetWindow(2,0," ");

}

delay(10);

if(m != 11)

{

if(m >= 10)

{

i--;

}

if(i==0)

LCD12864_SetWindow(2,0,"* ");

if( m>=0 && m<10 ) //Set the password to 0~9.

{

LCD12864_char(2,i,'*'); //Asterisk (*)

if(p == 1)

{

……………………

[1] [2] [3] [4] [5] [6]

Reference address：51 MCU 12864 display electronic password lock source code

Previous article：Design of 51 single chip microcomputer intelligent clock
Next article：Application of CH375_CH376 USB disk read and write module on 51 single chip microcomputer

Popular Resources
Popular amplifiers