此为B站up：江科大自动协课程的12-2程序，学习用
跟着老师敲出来

主函数

main.c

#include <REGX52.H>
#include "Delay.h"
#include "Key.h"
#include "Nixie.h"
#include "Timer0.h"

sbit Motor=P1^0;

unsigned char Counter,Compare;
unsigned char Speed,KeyNum;

void main()
{
    Timer0_Init();
    while(1)
    {
        KeyNum=Key();
        if(KeyNum==1)
        {
            Speed++;
            Speed%=4;
            if(Speed==0){Compare=0;}
            if(Speed==1){Compare=50;}
            if(Speed==2){Compare=75;}
            if(Speed==3){Compare=100;}
        }
            Nixie(1,Speed);
    }
}

void Timer0_Routine() interrupt 1
{
    static unsigned int T0Count;
    TL0 = 0x9C; 
    TH0 = 0xFF;
    Counter++;
    Counter%=100;
    if(Counter<Compare)
    {
        Motor=1;
    }
    else
    {
        Motor=0;
    }
}

延时模块

Delay.h

#ifndef __DELAY_H__
#define __DELAY_H__

void Delay(unsigned int xms);

#endif

Delay.c

#include <REGX52.H>

void Delay(unsigned int xms)
{
    unsigned char i, j;
    while(xms--)
    {
        i = 2;
        j = 239;
        do
        {
            while (--j);
        } while (--i);
    }
}

按键接收模块

Key.h

#ifndef __KEY_H__
#define __KEY_H__

unsigned char Key();

#endif

Key.c

#include <REGX52.H>
#include "Delay.h"

/**
  * @brief  获取独立按键键码
  * @param  无
  * @retval 按下按键的键码，范围：0~4，无按键按下时返回值为0
  */
unsigned char Key()
{
    unsigned char KeyNumber=0;
    
    if(P3_1==0){Delay(20);while(P3_1==0);Delay(20);KeyNumber=1;}
    if(P3_0==0){Delay(20);while(P3_0==0);Delay(20);KeyNumber=2;}
    if(P3_2==0){Delay(20);while(P3_2==0);Delay(20);KeyNumber=3;}
    if(P3_3==0){Delay(20);while(P3_3==0);Delay(20);KeyNumber=4;}
    
    return KeyNumber;
}

数码管显示模块

Nixie.h

#ifndef __NIXIE_H__
#define __NIXIE_H__

void Nixie(unsigned char Location,Number);

#endif

Nixie.c

#include <REGX52.H>
#include "Delay.h"  //包含Delay头文件

//数码管段码表
unsigned char NixieTable[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};

//数码管显示子函数
void Nixie(unsigned char Location,Number)
{
    switch(Location)        //位码输出
    {
        case 1:P2_4=1;P2_3=1;P2_2=1;break;
        case 2:P2_4=1;P2_3=1;P2_2=0;break;
        case 3:P2_4=1;P2_3=0;P2_2=1;break;
        case 4:P2_4=1;P2_3=0;P2_2=0;break;
        case 5:P2_4=0;P2_3=1;P2_2=1;break;
        case 6:P2_4=0;P2_3=1;P2_2=0;break;
        case 7:P2_4=0;P2_3=0;P2_2=1;break;
        case 8:P2_4=0;P2_3=0;P2_2=0;break;
    }
    P0=NixieTable[Number];  //段码输出
    Delay(1);               //显示一段时间
    P0=0x00;                //段码清0，消影
}

定时器模块

Timer0.h

#ifndef __TIMER0_H__
#define __TIMER0_H__

void Timer0_Init(void);

#endif

Timer0.c

#include <REGX52.H>

/**
  * @brief  定时器0初始化，1毫秒@12.000MHz
  * @param  无
  * @retval 无
  */
void Timer0_Init(void)
{
    TMOD &= 0xF0;       //设置定时器模式
    TMOD |= 0x01;       //设置定时器模式
    TL0 = 0x18;     //设置定时初值
    TH0 = 0xFC;     //设置定时初值
    TF0 = 0;        //清除TF0标志
    TR0 = 1;        //定时器0开始计时
    ET0=1;
    EA=1;
    PT0=0;
}

/*定时器中断函数模板
void Timer0_Routine() interrupt 1
{
    static unsigned int T0Count;
    TL0 = 0x18;     //设置定时初值
    TH0 = 0xFC;     //设置定时初值
    T0Count++;
    if(T0Count>=1000)
    {
        T0Count=0;
        
    }
}
*/