51 Microcontroller Basics: Running Water Lamp (1)-EEWORLD

Collect

Code:

#include //No more details

#define LED P2 //Macro definition P2 port, preferring direct operation

void delay(unsigned int u16) //No more details

{

while(u16--);

}

void main(void)

{

int i; //Define a variable

while(1)

{

for(i=0;i<8;i++) //Loop execution eight times

{

LED=~(0x01<

//The first time it is executed, it will shift one position to the left, the second time it will move two places to the left, the third time it will move it three places to the left, and so on.

delay(50000); //No more details

}

for(i=0;i<6;i++) //Loop execution six times

{

LED=~(0x40>>i); //Perform right shift once for the first time, shift right twice for the second time, and so on.

delay(50000); //No more details

}

//This running water lamp is realized by moving left and right, and the effect is still good.

operation result:

The LEDs turn on and off one by one from left to right, and then turn on and off one by one from right to left.

Reference address：51 Microcontroller Basics: Running Water Lamp (1)

Previous article：51 Microcontroller Basics: Running Water Lamp (2)
Next article：51 Microcontroller Basics GPIO Input

Popular Resources
Popular amplifiers

Latest Microcontroller Articles

Download from the Internet--ARM Getting Started Notes
A brief introduction: From today on, the ARM notebook of the rookie is open, and it can be regarded as a place to store these notes. Why publish it? Maybe you are interested in it. In fact, the reason for these notes is ...
Learn ARM development(22)
Turning off and on interrupts Interrupts are an efficient dialogue mechanism, but sometimes you don't want to interrupt the program while it is running. For example, when you are printing something, the program suddenly interrupts and another ...
Learn ARM development(21)
First, declare the task pointer, because it will be used later. Task pointer volatile TASK_TCB* volatile g_pCurrentTask = NULL;volatile TASK_TCB* vol ...
Learn ARM development(20)
With the previous Tick interrupt, the basic task switching conditions are ready. However, this "easterly" is also difficult to understand. Only through continuous practice can we understand it. ...
Learn ARM development(19)
After many days of hard work, I finally got the interrupt working. But in order to allow RTOS to use timer interrupts, what kind of interrupts can be implemented in S3C44B0? There are two methods in S3C44B0. ...
Learn ARM development(14)
Learn ARM development(15)
Learn ARM development(16)
Learn ARM development(17)

He Limin Column Microcontroller and Embedded Systems Bible

Professor at Beihang University, dedicated to promoting microcontrollers and embedded systems for over 20 years.

MoreSelected Circuit Diagrams

Change More Related Popular Components

MorePopular Articles

MoreDaily News

Guess you like