MCU interrupt experiment 3-EEWORLD

Collect

Circuit Diagram:

code show as below:

#include

sbit p1_0 = P1^0;

sbit p1_1 = P1^1;

void delay (void) {

int a = 500;

while(a--) _nop_();

}

void LED_01() interrupt 0 using 1 {

delay();

if (INT0 == 0) {

p1_0 = !p1_0;

while (INT0 == 0);

}

void LED_02() interrupt 2 using 1 {

delay ();

if (INT1 == 0) {

p1_1 = !p1_1;

while (INT1 == 0);

}

void main () {

p1_0 = 0;

p1_1 = 0;

EA = 1;

EX0 = 1;

EX1 = 1;

PX0 = 0; //The interrupt is lower than px1. When the high interrupt is in progress, the low interrupt cannot interrupt the high interrupt.

PX1 = 1; //The interrupt is higher than px0. When the low interrupt is in progress, the high interrupt can interrupt the low interrupt.

while(1);

}

Keywords：MCU Reference address：MCU interrupt experiment 3

Previous article：Single chip LED light BCD code format display 00~59 simple password stopwatch program
Next article：MCU interrupt experiment 2

Recommended ReadingLatest update time:2024-11-16 22:41

51 single chip microcomputer realizes 8x8LED light array to dynamically display moving text

I use the Puzhong Technology 51 single-chip microcomputer, other brands are also OK, but you need to change the serial port Without further ado, here is the code. //test1.h #include"reg51.h" #include"intrins.h" typedef unsigned char u8; typedef unsigned int u16; sbit SRCLK=P3^6; sbit RCLK =P3^5; sbit

[Microcontroller]

Timing Analysis of Power-on Reset and Reset Delay of 80C51 MCU

The power-on reset (POR) of the 80C51 microcontroller is essentially a power-on delay reset, which means that the microcontroller is locked in the reset state during the power-on delay period. Why is it necessary to add a certain delay time every time the microcontroller is powered on? The analysis is as follows.

[Industrial Control]

Timing Analysis of Power-on Reset and Reset Delay of 80C51 MCU

Do I need to buy a development board for self-study of microcontroller? How do beginners use microcontroller development boards?

It can be said that 99% of the old engineers who are engaged in microcontroller development, or the new microcontroller software engineers, have bought development boards, or have been using development boards to engage in microcontroller development. Some people may question this statement. If you question it, then y

[Microcontroller]

The difference between the two models of single-chip microcomputers: AT89C51 and AT89C52

There are two models of single chip microcomputers. The main difference is the capacity. The at89c51 supports a maximum of 4KB of program, while the at89c52 supports a maximum of 8KB of program. AT89C51 Introduction: AT89C51 is a low-voltage, high-performance CMOS 8-bit microprocessor with 4K bytes of FLASH memory (

[Microcontroller]

Microcontroller beginner's guide (9) Using a universal soldering board to build an experimental circuit

In this article, we will continue the topic of the previous article and explain another way to build your own circuit: using a universal soldering board to build a circuit. Before that, let's first popularize some basic knowledge. Circuit Board First, let's learn about circuit boards. As mentioned earlier, breadboar

[Microcontroller]

How to set parity check for serial communication of 51 single chip microcomputer

Usually, the format of a frame of serial communication is 8-n-1, that is, 8 bits of data, no parity, and 1 stop bit. Sometimes, in order to improve accuracy, you need to add an "odd" or "even" check bit. For high-level languages, it is very simple to do this. Just change the format command "8-n-1" to "8-P-1" or "8-O-

[Microcontroller]

MCU-based intelligent injection device can realize intelligent iontophoresis therapy

Iontophoresis is a treatment method that allows drugs to penetrate the human body through the skin. Drugs absorbed through the skin are charged mixtures that flow through the skin driven by an electric current. To inject the appropriate dose of drug, the current passing through the skin must be effectively controlle

[Medical Electronics]

MCU-based intelligent injection device can realize intelligent iontophoresis therapy

Microcontrollers that combine Hi-Fi, intelligence and USB multi-channel features – ushering in a new era of digital audio

With the continuous integration of many technological breakthroughs and new streaming services, and the growing prosperity of the smart home and smart speaker markets, consumers' demand for audio is no longer limited to sound quality itself, but more about pursuing high-quality life experience and convenient smart i

[Analog Electronics]

Microcontrollers that combine Hi-Fi, intelligence and USB multi-channel features – ushering in a new era of digital audio

Popular Resources
Popular amplifiers