Design and implementation of the function of running water lamp based on MCS-51 single chip microcomputer-EEWORLD

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Today, the editor will take you to continue to start from the basics and easily play with the MCS-51 microcontroller. The main function achieved this time is: the design and implementation of the running light function based on the STC89C51 microcontroller. As shown in the figure below: The figure below is the running light circuit (with the microcontroller interface setting). Circuit: The current value of 1 LED light tube is about 3~10mA, and the resistance value is 1K.

Marquee circuit (interface setting with single chip microcomputer)

　　After the circuit is programmed, it can light up a single LED light or realize the function of running lights, marquee lights, etc. (You can write the specific program yourself) Here I have written a C source code to realize the running lights. You can also use your own divergent thinking to make the lights light up as you want... Those who have done it by themselves must have had this feeling: the board they bought has been used over and over again, but every time they come up with something new, and every time they write the code, they are completely immersed in it... The picture below shows what the board looks like when the specific function is realized. Let's take a look!

　　The code to implement the water lamp:

　　#include

　　#define uchar unsigned char //Here "uchar" is used instead of "unsigned char", "uchar" is used to define unsigned character type numbers.

　　#define uint unsigned int //"uint" is used to define unsigned integers.

　　void delay(uint);

　　uchar tmp,i;

　　void main()

　　{ tmp=0x7f; //Turn on the 8th light (tmp=0x7f=0111 1111)

　　P0=tmp;

　　for(i=0;i<7;i++)

　　{

　　tmp=_cror_(tmp,1); //Circularly shift right by 1 bit (tmp=1011 1111), light up the 7th light

　　delay(500);

　　P0=tmp;

　　}

　　P0=0xfe;

　　for(i=0;i<7;i++)

　　{

　　tmp=_crol_(tmp,1); //Circularly shift left by 1 bit

　　delay(500);

　　P0=tmp;

　　}

　　void delay(z)

　　{ uint x,y;

　　for(x=z;x>0;x--)

　　for(y=110;y>0;y--);

　　}

Keywords：MCS-51 Reference address：Design and implementation of the function of running water lamp based on MCS-51 single chip microcomputer

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Recommended ReadingLatest update time:2024-11-23 21:26

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