Tutorial on writing buttons to control the flashing cycle of the LED light of a microcontroller

Teach how to write a program that controls the LED light flashing cycle of a microcontroller through buttons

What microcontroller are you using?

It seems that you are talking about a marquee. I will give you the most common one, 51 microcontroller, and a marquee C program.

I can give you more if necessary, I am a hardware development engineer.

Hope to adopt.

For example, this is a marquee C program for a 51 microcontroller, which has been simulated on PROTEUS software

#include

void delay(int);

void main()

{

int i;

P0=0x01;

delay(500);

while(1)

{

for(i=0;i

{

P0

delay(500);

}

P0=0x01;

delay(500);

}

}

void delay(intx)

{

int i,j;

for(i=x;i>0l;i--)

for(j=110;j>0;j--);

}

:

#include

void delay(int);

void main()

{

int i;

P0=0x01;

delay(500);

while(1)

{

for(i=0;i

{

P0

delay(500);

}

P0=0x01;

delay(500);

}

}

void delay(intx)

{

int i,j;

for(i=x;i>0l;i--)

for(j=110;j>0;j--);

}

SCM revolving door program

//==============

#include

#define count 11

char TAB[]={ 0xc0,0xf9,0xa4,0xb0,0x99,

0x92,0x83,0xf8,0x80,0x98,

0xff};

char disp[11][4]={ {10,10,10,10},

{1,10,10,10},{10,1,10,10},{10,10,1,10},{10,10,10,1},

{2,10,10,1},{10,2,10,1},{10,10,2,1},

{3,10,2,1},{10,3,2,1},

{4,3,2,1}};

void delay1ms(int);

void scanner(char);

//================

main()

{char i=0;

while(1)

{

if(i==0)

{ for(i=0;i

scanner(i);

}

else

{ for(i=10;i>=0;i--)

{

scanner(i);

if(i==0)break;}

}

}

}

//================

void delay1ms(int x)

{ int i,j;

for(i=0;i

for(j=0;j

}

//====================

void scanner(char x)

{ char i,j,scan,BCD;

for(i=0;i

{ scan=1;

for(j=0;j

{ P0=0xff;

P2=~scan;

BCD=disp[x][j];

P0=TAB[BCD];

delay1ms(4);

scan

}

}

}

How to make a marquee with a microcontroller

#include

sbit LED1 = P1^0;

sbit LED2 = P1^1;

sbit LED3 = P1^2;

sbit LED4 = P1^3;

sbit LED5 = P1^4;

sbit LED6 = P1^5;

sbit LED7 = P1^6;

sbit LED8 = P1^7;

void Delay()

{

unsigned char i,j;

for(i=0;i

for(j=0;j

}

void main()

{

while(1)

{

P1 = 0xff;

LED1 = 0;

Delay();

LED2 = 0;

LED1 = 1;

Delay();

LED3 = 0;

LED2 = 1;

Delay();

LED4 = 0;

LED3 = 1;

Delay();

LED5 = 0;

LED4 = 1;

Delay();

LED6 = 0;

LED5 = 1;

Delay();

LED7 = 0;

LED6 = 1;

Delay();

LED8 = 0;

LED7 = 1;

Delay();

}

}

MCU marquee program

org 0000h

ajmp start

org 0030h

start:

mov a,#0ffh ;

clr c ;

mov r2,#08h ; Loop eight times.

loop: rlc a ; shift left with carry.

mov p1,a ; Output to P1 port.

call delay ；delay for a period of time

djnz r2,loop ；repeated loop

mov r2,#07h; then loop back.

loop1: rrc a ; right shift with carry

mov p1,a ; Output to P1 port.

call delay ；delay for a period of time

djnz r2,loop1 ；repeated loop

jmp start ；Restart

delay: mov r3,#20; delay subroutine

d1: mov r4,#20

d2: mov r5,#248

djnz r5,$

djnz r4,d2

djnz r3,d1

ret

end

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