MCU INT0 and INT1 counters-EEWORLD

Collect

Hardware Connection:

Code:

#include

#define uchar unsigned char

#define uint unsigned int

sbit k3 = P3^4;

sbit k4 = P3^5;

uchar code DSY_CODE[]=

{

0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff

};

uchar code Scan_BITs[]=

{

0x20,0x10,0x08,0x04,0x02,0x01

};

uchar data Buffer_Counts[]={0,0,0,0,0,0};

uint Count_A=0;

uint Count_B=0;

void DelayMS(uint x)

{

flying t;

while(x--)

{

for(t=0;t<120;t++);

}

void Show_Counts()

{

uint i;

Buffer_Counts[2] = Count_A / 100;

Buffer_Counts[1] = Count_A % 100 /10;

Buffer_Counts[0] = Count_A % 10;

if(Buffer_Counts[2]==0)

{

Buffer_Counts[2] = 0x0a;

if(Buffer_Counts[1]==0)

{

Buffer_Counts[1]=0x0a;

}

Buffer_Counts[5] = Count_B / 100;

Buffer_Counts[4] = Count_B % 100 /10;

Buffer_Counts[3] = Count_B % 10;

if(Buffer_Counts[5]==0)

{

Buffer_Counts[5] = 0x0a;

if(Buffer_Counts[4]==0)

{

Buffer_Counts[4]=0x0a;

}

for(i=0;i<6;i++)

{

P2 = Scan_BITs[i];

P1 = DSY_CODE[Buffer_Counts[i]];

DelayMS(1);

}

void main()

{

IT0 = 1;

IT1 = 1;

PX0 = 1;

IE = 0x85;

while(1)

{

if(k3 == 0) Count_A = 0;

if(k4 == 0) Count_B = 0;

Show_Counts();

}

void EX_INT0() interrupt 0

{

Count_A++;

}

void EX_INT1() interrupt 2

{

Count_B++;

}

Keywords：MCU INT0 INT1 Counter Reference address：MCU INT0 and INT1 counters

Previous article：TIMERO microcontroller controls water lamp
Next article：Single digital tube displays 4x4 matrix buttons

Recommended ReadingLatest update time:2024-11-23 12:06

Programming a clock program with preset start time using C language for PIC microcontroller

　　(1) Hardware Circuit 　　　　Using the 4-digit LED digital tube display circuit, a clock circuit with a 24-hour or 12-hour cycle display can be made, and the clock can be manually preset at the starting time. That is, after the circuit is plugged in, it can be manually adjusted according to the real time at that time,

[Microcontroller]

AVR microcontroller atmega16 serial port interrupt receiving and sending program

// Target : M16 // Crystal: 8.0000Mhz // AVR microcontroller atmega16 serial port interrupt receiving and sending program. After receiving the character, send it out #include iom16v.h #include macros.h unsigned char com_in_buf ; void port_init(void) { PORTA = 0xFF; DDRA = 0xFF; PORTB = 0x00; DDRB = 0x0

[Microcontroller]

Detailed explanation of 51 single-chip microcomputer crystal oscillator

What is a crystal oscillator? The full name is quartz crystal oscillator, which is a high-precision and high-stability oscillator. Through a certain external circuit, a sine wave with stable frequency and peak value can be generated. When the microcontroller is running, it needs a pulse signal as a trigger signal for e

[Microcontroller]

Realization of Voice Recording and Playing System Based on AT89C52 Single Chip Microcomputer

1 Introduction Microcontrollers have been rapidly developed and widely promoted due to their high reliability, high cost performance, low voltage, low power consumption and other advantages. They are widely used in industrial control systems, data acquisition systems, intelligent instruments and

[Microcontroller]

Realization of Voice Recording and Playing System Based on AT89C52 Single Chip Microcomputer

Overview of Qinheng's 8-bit enhanced USB master-slave microcontroller CH559

Overview CH559 is an enhanced E8051 core microcontroller compatible with MCS51. 79% of the instructions are single-byte single-cycle instructions. It has built-in 60K Code Flash and 6K+256B Ram. CH559 has a built-in USB controller and dual USB transceivers. It supports USB-Host host mode and USB-Device device mode.

[Microcontroller]

How to send data packets in the RAM area of the microcontroller network card

　　This paper studies in depth the use of single-chip microcomputer to control the network card, access Ethernet, that is, IEEE802.3 protocol network, to achieve the networking of serial port instruments. 　　1 Hardware structure and circuit design 　　1.1 Overall Design 　　The whole system design uses ATMEL's 8-bit g

[Microcontroller]

Samsung wins STMicroelectronics' 16nm MCU outsourcing order for next-generation iPhone

According to sources in the semiconductor industry, Samsung Electronics has received a contract from STMicroelectronics to produce MCUs for Apple's next-generation iPhone using a 16nm process. This is the first time that STMicroelectronics has outsourced MCU production for major customers such as Apple. According to t

[Mobile phone portable]

Interface circuit and driver based on ADC081S051 and 51 single chip microcomputer

introduction The signals existing in nature are usually analog signals. In the measurement and control system, the collected analog signals are usually digitized and then handed over to the microprocessor or microcontroller for processing. Therefore, the analog-to-digital converter becomes an indispensable part of the

[Power Management]

Interface circuit and driver based on ADC081S051 and 51 single chip microcomputer

Popular Resources
Popular amplifiers