独立按键问题

davidmou

#include <reg52.h>
typedef unsigned int u16;
typedef unsigned char u8;

//三八译码器的三个口(数码管位选）
sbit SMG_C = P2^2;
sbit SMG_B = P2^3;
sbit SMG_A = P2^4;

sbit rCLK = P3^5;
sbit SRCLK = P3^6;
sbit SER= P3^4;

//独立按键
sbit KEY1 = P3^1;
sbit KEY2 = P3^0;
sbit KEY3 = P3^2;
sbit KEY4 = P3^3;

//蜂鸣器管脚
sbit BEEP = P2^5;

u8 LED_state = 0;//用于储存LED状态

//LED点阵显示内容坐标
u8 gled_banana[8] = {0x0C,0x34,0xC9,0xF3,0x7D,0x82,0x8E,0x70};
u8 gled_love[8] = {0x38,0x44,0x82,0x41,0x41,0x82,0x44,0x38};
u8 gled_ball[8] = {0x3C,0x42,0x81,0x81,0x81,0x81,0x42,0x3C};
u8 gled_gpurd[8] = {0x00,0x06,0x69,0x91,0x91,0x69,0x06,0x00};
u8 gled_posion[8] = {0x00,0x3E,0xFB,0xF7,0xEF,0xDF,0x3E,0x00};
u8 gled_welcome[8] = {0x48,0xD7,0x60,0x07,0xBD,0xAF,0xBF,0x05};
u8 gled_pay_money[8] = {0x06,0x61,0x91,0xFF,0x91,0xFF,0x91,0x1E};
u8 gled_lie[8] = {0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
u8 gled_pay_OK[8] = {0x3C,0x42,0x3C,0x00,0xFF,0x18,0x24,0xC3};
u8 gled_no_commodity[8] = {0x12,0x12,0x94,0xF8,0xFE,0x91,0x11,0x13};

u8 gsmg_code_nopoint[10]= {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
                                0x7f,0x6f};   
//数码管上显示的内容：0到9（无小数点）

u8 gsmg_code_ispoint[10] = {0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,
0x87,0xff,0xef};
//数码管上显示的内容：0到9（有小数点）

//数码管上的货物价格
u8 commodit_banana[8] = {0x06,0xcf,0x5b,0x6d,0x3f,0x3f,0x3f,0x3f};
u8 commodit_love[8] = {0x6d,0x5b,0x3f,0x06,0x4f,0x06,0xe6,0x3f};
u8 commodit_ball[8] = {0x7f,0xff,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f};
u8 commodit_gpurd[8] = {0x07,0x07,0x66,0x6f,0xbf,0x3f,0x3f,0x3f};
u8 commodit_posion[8] = {0x3f,0x3f,0x3f,0xbf,0x06,0x5b,0x6d,0x7f};


#define        SMG_A_DP_PORT P0
//led显示界面的标志
#define BANANA 0
#define LOVE 1
#define BALL 2
#define GPURD 3
#define POSION 4
#define WELCOME 5
#define PAY_MONEY 6
#define PAY_OK 7
#define NO_COMMODITY 8


void delay(u16 num)
{
        while(num--);
}

// 数码管显示货物价格
void smg_display(u8 commodity)
{
        u8 i = 0;
        for (i = 0; i < 8; i++)
        {
                switch (i)
                {
                        case 0: SMG_A = 1; SMG_B = 1; SMG_C = 1;break;
                        case 1: SMG_A = 1; SMG_B = 1; SMG_C = 0;break;
                        case 2: SMG_A = 1; SMG_B = 0; SMG_C = 1;break;
                        case 3: SMG_A = 1; SMG_B = 0; SMG_C = 0;break;
                        case 4: SMG_A = 0; SMG_B = 1; SMG_C = 1;break;
                        case 5: SMG_A = 0; SMG_B = 1; SMG_C = 0;break;
                        case 6: SMG_A = 0; SMG_B = 0; SMG_C = 1;break;
                        case 7: SMG_A = 0; SMG_B = 0; SMG_C = 0;break;
                }
                switch(commodity)
                {
                        case 0: SMG_A_DP_PORT = commodit_banana[i];delay(100);SMG_A_DP_PORT = 0x00;break;
                    case 1:        SMG_A_DP_PORT = commodit_love[i];delay(100);SMG_A_DP_PORT = 0x00;break;
                        case 2: SMG_A_DP_PORT = commodit_ball[i];delay(100);SMG_A_DP_PORT = 0x00;break;
                        case 3: SMG_A_DP_PORT = commodit_gpurd[i];delay(100);SMG_A_DP_PORT = 0x00;break;
                        case 4: SMG_A_DP_PORT = commodit_posion[i];delay(100);SMG_A_DP_PORT = 0x00;break;
                }       
        }
}

//把信息写入74HC595
void write_hx(u8 dat)
{
        u8 i = 0;
        for (i=0;i<8;i++)
        {
                SER = dat>>7;
                dat <<= 1;
                SRCLK = 0;
                delay(1);
                SRCLK = 1;
                delay(1);
        }
        rCLK = 0;
        delay(1);
        rCLK = 1;
        delay(1);
}

//蜂鸣器函数
void beep(u16 time_continue)
{
        BEEP = 1;
        while(time_continue--)
        {
                BEEP = !BEEP;
                delay(100);
        }
        BEEP = 0;
}       
       
                  
//点击独立按键，K1，K4会切换led点阵显示内容，K2会出现请付款的LED点阵，
//再点K2会出现货物价格，点击K3，LED点阵提示付款成功.
//拔掉插帽可从数字信息转为LED信息                       

//用于在LED上显示内容，并返回LED状态
u8 LED_display(u8 screen_display)
{
        u8 i = 0;       
        for (i=0;i<8;i++)
        {
                SMG_A_DP_PORT = gled_lie[i];
                switch (screen_display)
                {
                        case 0:        write_hx(gled_banana[i]);break;
                        case 1:        write_hx(gled_love[i]);break;
                        case 2:        write_hx(gled_ball[i]);break;
                        case 3:        write_hx(gled_gpurd[i]);break;
                        case 4:        write_hx(gled_posion[i]);break;
                        case 5:        write_hx(gled_welcome[i]);break;
                        case 6:        write_hx(gled_pay_money[i]);break;
                        case 7:        write_hx(gled_pay_OK[i]);break;
                        case 8: write_hx(gled_no_commodity[i]);break;
                }
                delay(100);
                write_hx(0x00);
        }
        return screen_display;
}
//判断按K1和K4后的LED界面呈现情况.返回按键后的LED状态
u8 K1_K4_function(u8 current_LED_state)
{
        u8 LED_state = 0;
        static u8 key = 1;
        if (key ==1 && KEY1 == 0)
        {
                delay(1000);
                if (KEY1 == 0)
                {
                        key = 0;
                        if ((current_LED_state - 1)<0){LED_state = LED_display(NO_COMMODITY);return LED_state;}
                        if ((current_LED_state - 1)>=0){LED_state = LED_display( current_LED_state - 1);return LED_state;}
                }
        if (KEY1 == 1){key = 1;}
        }
        else if (key == 1 && KEY4 == 0)
        {
                delay(1000);
                if (KEY4 == 0)
                {
                        key = 0;
                        if ((current_LED_state + 1) >= 5){LED_state = LED_display(NO_COMMODITY);return LED_state;}
                        if ((current_LED_state +1 )<5){LED_state = LED_display(current_LED_state + 1);return LED_state;}
                }
        if (KEY1 == 1){key = 1;}
        }
}
u8 double_K2 = 1;
//K2一次点击和二次点击后的结果
u8 K2_function(u8 LED_state)
{       
        static u8 key = 1;
        ;
        if ( key && KEY2 == 0 )
        {       
                delay(1000);
                key = 0;
                if (KEY2 == 0 && double_K2){LED_display(PAY_MONEY);double_K2 = 0;return PAY_MONEY;}
                else if(KEY2 == 0&&double_K2 == 0)
                        {smg_display(LED_state);
                        if (KEY3 == 0);{LED_display(PAY_OK);beep(30000);return PAY_OK;}}
        }
        if (KEY2 == 1){key = 1;}
}                       

u8 init_state = BANANA;
void main()
{       

        LED_display(WELCOME);
        delay(300000);
        LED_display(BANANA);
        delay(300000);
       
        while(1)
        {
                init_state = K1_K4_function(init_state);               
                init_state = K2_function(init_state);
                LED_display(init_state);       
                                               
        }
}

不知道为什么LED点阵到love，按独立按键没用，求指点
       

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