单片机 0~99加减

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等待孤独的旅程

最新推荐文章于 2023-11-17 05:00:00 发布

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分类专栏：单片机

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#include <reg51.h> 
#define GPIO_PLACE P1 //段选 
#define DataPort P0 //位选 
sbit KEY_UP=P2^7; //加 
sbit KEY_DOWN=P2^6; //减 

unsigned char code Bit[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; 
unsigned char code Seg[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; 
unsigned char TempData[2]; 

void DelayUs2x(unsigned char t) 
{ 
    while(--t); 
} 

void DelayMs(unsigned char t) 
{ 
    while(t--) 
    { 
        DelayUs2x(245); 
        DelayUs2x(245); 
    } 
} 

void display(unsigned char FirstBit, unsigned char Num) 
{ 
    unsigned char i,j; 
    for(i=0;i<Num;i++) 
    { 
        DataPort = 0x00; 
        GPIO_PLACE = Bit[i+FirstBit]; 
        j=TempData[i]; 
        DataPort = Seg[j]; 
        DelayMs(10); } } 

    void Time0_init() 
    { 
        TMOD |= 0x01; 
        EA = 1; 
        ET0 = 1; 
        TR0 = 1; 
    } 

    void Time0_isr() interrupt 1 
    { 
        TH0 = (65536 - 2000) / 256; 
        TL0 = (65536 - 2000) % 256; 
        display(0,2); 
    } 

void main() 
{ 
    unsigned char key_press_num=0,num=0; 
    KEY_UP=1; 
    KEY_DOWN=1; 
    while(1) 
    { 
        if(!KEY_UP) 
        { 
            DelayMs(10); 
            display(0,2); 
            if(!KEY_UP) 
            { 
                while(!KEY_UP)
                { 
                    key_press_num++; 
                    DelayMs(10); 
                    display(0,2); 
                    if(key_press_num==100) 
                    { 
                        key_press_num=0; 
                        while(!KEY_UP) 
                        { 
                            num++; 
                            if(num==100) 
                            { 
                                num=0; 
                            } 
                            TempData[1]=num%10; 
                            TempData[0]=num/10; 
                            DelayMs(100); display(0,2); 
                        } 
                    } 
                }
                key_press_num=0; 
                num++; 
                if(num==100) 
                { 
                    num=0; 
                } 
            } 
        } 
        if(!KEY_DOWN) 
        { 
            DelayMs(10); 
            display(0,2); 
            if(!KEY_DOWN) 
            { 
                while(!KEY_DOWN) 
                { 
                    key_press_num++; 
                    DelayMs(10); 
                    display(0,2); 
                    if(key_press_num==100) 
                    { 
                        key_press_num=0; 
                        while(!KEY_UP) 
                        { 
                            num--; 
                            if(num==0xff) 
                            { 
                                num=99; 
                            } 
                            TempData[1]=num%10; 
                            TempData[0]=num/10; 
                            DelayMs(100); 
                            display(0,2); 
                        } 
                    } 
                } 
                key_press_num=0; num--; 
                if(num==0xff) 
                { 
                    num=99; 
                } 
            } 
        } 
        TempData[1]=num%10; 
        TempData[0]=num/10; 
        display(0,2); 
    } 
}