Atmega8_p6

//ICC-AVR application builder
//atmega8_p6
/*
    功能：計時器
        S1按鈕：顯示狀態1到狀態10(乙級燈號表，按一下更新狀態一次，狀態10顯示完必須回到S2按鈕狀態)
        S2按鈕：
                七段顯示器顯示0000、FFFF 交替閃爍
*/

#include<iom8v.h>
#include<macros.h>

#define S_1      PORTC &= ~BIT(0);PORTC|=BIT(1) ;PORTC|=BIT(2) ;PORTC|=BIT(3);
#define S_2      PORTC |= BIT(0) ;PORTC&=~BIT(1);PORTC|=BIT(2) ;PORTC|=BIT(3);
#define S_3      PORTC |= BIT(0) ;PORTC|=BIT(1) ;PORTC&=~BIT(2);PORTC|=BIT(3);
#define S_4      PORTC |= BIT(0) ;PORTC|=BIT(1) ;PORTC|=BIT(2) ;PORTC&=~BIT(3);
#define S_OFF    PORTC |= BIT(0) ;PORTC|=BIT(1) ;PORTC|=BIT(2) ;PORTC|=BIT(3);
#define S_ON     PORTC &= ~BIT(0);PORTC&=~BIT(1);PORTC&=~BIT(2);PORTC&=~BIT(3);

unsigned int seg[11] =
{
    0x3f,0x06,0x5b,0x4f,
    0x66,0x6d,0x7d,0x07,
    0x7f,0x6f,0x71
};

unsigned int btn1_1[6] =
{
    0x01,0x02,0x04,0x08,0x10,0x20
};

unsigned int btn1_2[6] =
{
    0x20,0x10,0x08,0x04,0x02,0x01
};

unsigned int btn1_3[5] =
{
    0x03,0x06,0x0C,0x18,0x30
};

unsigned int btn1_4[5] =
{
    0x30,0x18,0x0C,0x06,0x03
};

unsigned int btn1_5[6] =
{
    0x01,0x03,0x07,0x0F,0x1F,0x3F
};

unsigned int btn1_6[6] =
{
    0x3F,0x1F,0x0F,0x07,0x03,0x01
};

unsigned int btn1_7[3] =
{
    0x0C,0x12,0x21
};

unsigned int btn1_8[3] =
{
    0x21,0x12,0x0C
};

unsigned int btn1_9[11] =
{
    0x01,0x02,0x04,0x08,0x10,0x20,0x10,0x08,0x04,0x02,0x01
};

unsigned int btn1_10[11] =
{
    0x20,0x10,0x08,0x04,0x02,0x01,0x02,0x04,0x08,0x10,0x20
};

unsigned int btn1_index[10] =
{
    6,6,5,5,6,6,3,3,11,11
};

//初始化 變量 聲明//////////////////////////////////////////////////////////////
int data = 0;
int data2 = 0;
int i = 0;
int count = 0;
int count2 = 0;

void btn1_count(void)
{
 S_OFF;
    for(i=0;i<btn1_index[count];i++)
    {
        switch(count)
        {
            case 0:
                PORTC = ~btn1_1[i];
                delay_ms(1000);
            break;
            case 1:
                PORTC = ~btn1_2[i];
                delay_ms(1000);
            break;
            case 2:
                PORTC = ~btn1_3[i];
                delay_ms(1000);
            break;
            case 3:
                PORTC = ~btn1_4[i];
                delay_ms(1000);
            break;
            case 4:
                PORTC = ~btn1_5[i];
                delay_ms(1000);
            break;
            case 5:
                PORTC = ~btn1_6[i];
                delay_ms(1000);
            break;
            case 6:
                PORTC = ~btn1_7[i];
                delay_ms(1000);
            break;
            case 7:
                PORTC = ~btn1_8[i];
                delay_ms(1000);
            break;
            case 8:
                PORTC = ~btn1_9[i];
                delay_ms(1000);
            break;
            case 9:
                PORTC = ~btn1_10[i];
                delay_ms(1000);
            break;
        }
    }
    PORTC = 0xFF;
    count += 1;

    if(count == 10)
    {
        count = 1;
        timer0_open();
    }
}

void btn2(void)
{
    S_OFF;
    switch(count2)
    {
        case 0:PORTD = seg[0];S_ON;count2=1;break;
        case 1:PORTD = seg[10];S_ON;count2=0;break;
    }
}

void key_scan(void)
{
    if((PINB&0x3F)!=0x3F)     //假如1~8顆按鈕有被按下去(=0)
    {
        if((PINB&0x3F)!=0x3F)
        {
            delay_ms(20);
            switch(PINB)
            {
                case 0X3E:
                    timer0_close();
                    btn1_count();
                break;//S1

                case 0X3B:
                    timer0_open();
                break;//S2
                default:break;
            }
            delay_ms(1);
        }
    }
}

void delay_us(unsigned int microsecond)
{
    do
    {
        microsecond--;
    }
    while (microsecond>1);
}

void delay_ms(unsigned int millisecond)
{
    while (millisecond--)
    {
        delay_us(999);
    }
}

//I、O口初始化
void port_init(void)
{
    DDRB  = 0XC0;
    PORTB = 0XFF;//按鈕

    PORTC = 0xFF;
    DDRC  = 0xFF;
    PORTD = 0xFF;
    DDRD  = 0xFF;//七段顯示器
}

void timer0_open(void)
{
    CLI();
    TCNT0 = 0x05;
    TIMSK |= BIT(TOIE0);
    TCCR0 |= BIT(CS01) | BIT(CS00);
    SEI();
}

void timer0_close(void)
{
    CLI();
    TIMSK &= ~BIT(TOIE0);
    TCCR0 &= ~(BIT(CS02) | BIT(CS01) | BIT(CS00));
    SEI();
}

//CPU總體初始化
void init_devices(void)
{
    CLI();
    port_init();
    MCUCR = 0x00;
    GICR  = 0x00;

    TIMSK = 0x00;
    TCCR0 = 0x00;
    TCNT0 = 0x05;
    SEI();
}
//向量值
#pragma interrupt_handler timer0_ovf_isr:10
void timer0_ovf_isr(void)
{
    TCNT0 = 0X05;
    data++;
    if(500==data)
    {
        data = 0;
        btn2();
    }
}

void main(void)
{
    init_devices();
    while(1)
    {
        key_scan();
    }
}