51 single-chip microcomputer flow light left and right control program-EEWORLD

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The circuit is very simple. The 8-bit running light is connected to the P1 port of the microcontroller. The source code is as follows:

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

//Program name: LLL22_4.C

//Program function: Control the flow light to move left and right

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

#include//header file

L_M(); //Flowing light left shift control program

R_M(); //Flowing light right shift control program

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

main() //Main function

{

while(1) // infinite loop

{

L_M(); //Call left shift program

R_M(); //Call right shift program

}

//=======Left shift control program================================================

L_M() //Left shift main function

{

unsigned char i,temp,a,b; //declare unsigned character type variables A,TEMP I,B

unsigned int s; //Declare an unsigned integer variable S

temp=0xfe; //left shift initial value

P1=temp; //P1 outputs signal to light up the LED

for( s=0;s<30000;s++); //delay program

for (i=1;i<8;i++) //The number of digits the LED moves

{

a=temp<

b=temp>>(8-i); //data right shift (8-I) bits

P1=a|b ; //Logical OR operation, and output to P1 port

for(s=0;s<30000;s++); //delay program

}

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

R_M()

{

unsigned char i,temp,a,b; //declare unsigned character type variables A,TEMP I,B

unsigned int s; //Declare an unsigned integer variable S

temp=0x7f; //left shift initial value

P1=temp; //P1 outputs signal to light up the LED

for(s=0;s<30000;s++); //delay program

for(i=1;i<8;i++) //The number of digits the LED moves

{ //Shift the LED left by 1 position

a=temp>>i;

b=temp<<(8-i); //data right shift (8-I) bits

P1=a|b; //Logical OR operation, and output to P1 port

for(s=0;s<30000;s++); //delay program

}

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

Reference address：51 single-chip microcomputer flow light left and right control program

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