main.c.bak

凌阳61板上调试通过的电子万年历源程序

#include <SPCE061V004.H>
#include <unSPMACRO.h>
//中断函数定义
void IRQ1(void) __attribute__((ISR));
void IRQ5(void) __attribute__((ISR));
void IRQ6(void) __attribute__((ISR));
enum { RUN, CHGSECOND, CHGMINUTE, CHGHOUR, TIME, CHGTIME } clock_status;   //时钟的状态 
unsigned int hour,minute,second;
unsigned int show_hour, show_minute, show_second;         //改写状态下是否显示
enum { NOKEY, PRESSING, PRESSED } key_status;           //键盘按下与否的状态
unsigned key_code;
// 7段LED数码管的字形码，采用高八位输出，决定显示的字形，如: '0'、'1'等
const unsigned int zhixingma[] = {  0x3f00, 0x0600, 0x5b00, 0x4f00, 
                                    0x6600, 0x6d00, 0x7c00, 0x0700,
                                    0x7f00,0x6f00 };
// 数码管选择的"位段码",决定哪一位数码管显示
const unsigned int weiduanma[] = {0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020};
//数码管的两个DD引脚, 为时,中间的冒号亮
const unsigned int wei_DD = 0x0080; 
 
void display(unsigned int wei, unsigned int number)
{
    *P_IOB_Data = weiduanma[wei] | (*P_IOB_Buffer & wei_DD);
    *P_IOA_Data = zhixingma[number];
    //设置位段码时，不能改变冒号的状态   
//    *P_IOB_Data = weiduanma[wei] | (*P_IOB_Buffer & wei_DD);
}
//取反数码管中间的冒号
void opposite_dots()
{   
*P_IOB_Data = wei_DD ^ (*P_IOB_Buffer);
}
void delay(unsigned int howlong)
{
    while(howlong--){
        unsigned int temp = 0x00ff;
        *P_Watchdog_Clear = 1;
        while(temp--);
    }
}
void init()
{   
INT_OFF();
    *P_IOA_Dir = 0xff00;
    *P_IOA_Attrib = 0xff00;
    *P_IOB_Dir = 0x00ff;
    *P_IOB_Attrib = 0x00ff;
    *P_TimerA_Data = 0xffff - 256;
    *P_TimerA_Ctrl = C_SourceA_1 | C_SourceB_256Hz;
    *P_INT_Ctrl = C_IRQ1_TMA | C_IRQ6_TMB2 | C_IRQ5_2Hz;
    INT_IRQ();
}
void change_clock()
{   
// unsigned int key_code = get_key();
    static unsigned int max;
    switch(key_code){   // key_code == 0 will do nothing
        case 1: 
            switch( clock_status ){
            case CHGSECOND:
                if(++second == 60) second = 0;
                   break;
            case CHGMINUTE:
                if(++minute == 60) minute = 0;
                break;
            case CHGHOUR:
                if(++hour == 24) hour =0;
                break;
            default:
                break;
            }
              key_code = 0;
            break;
        case 2:
            switch( clock_status ){
            case CHGSECOND:
                if(--second == 65535) second = 59;
                   key_code = 0;
                break;
            case CHGMINUTE:
                if(--minute == 65535) minute = 59;
                   key_code = 0;
                break;
            case CHGHOUR:
                if(--hour == 65535) hour = 23;
                   key_code = 0;
                break;
            default:
                   key_code = 0;
                break;
            }
              key_code = 0;
            break;
        case 3:     
            switch( clock_status ){
            case RUN:
                clock_status = CHGSECOND;
                break;
            case CHGSECOND:
                clock_status = CHGMINUTE;
                break;
            case CHGMINUTE:
                clock_status = CHGHOUR;
                break;
            case CHGHOUR:
                clock_status = CHGTIME;
                break;
            case CHGTIME:
                clock_status = RUN;
                break;
            }
              key_code = 0;
            break;
        case 4:
            if( clock_status == CHGTIME )
           {   
            if(++second == 100 ) second=0;        
           }
            key_code = 0;
            break;
        case 5:
            if( clock_status == CHGTIME )
           {   
            if(--second == 65535 ) second=99;        
           }
            key_code = 0;
            break;
        case 5:
        default:
            break;
    }
}
 
int main()
{   
    init();
    while(1){
        change_clock();     
        if(show_second){
            display(5, second % 10);
            delay(1);   
            display(4, second / 10);
            delay(1);
        }
        if(show_minute){
            display(3, minute % 10);
            delay(1);
            display(2, minute / 10);
            delay(1);
        }
        if(show_hour){
            display(1, hour % 10);
            delay(1);
            display(0, hour / 10);
            delay(1);
        }
    }
}
 
void IRQ1()
{
    //时钟计数中断
    if( (C_IRQ1_TMA & *P_INT_Ctrl) != 0 )
    {   if( clock_status == RUN )
        {   second++;
            if(second >= 60 ) second=0, minute++;
            if(minute >= 60 ) minute=0, hour++;
            if(hour >= 24 ) hour=0;
        }
        if( clock_status == TIME )
        {   
            if(--second == 65535 ) second=0;        
        }
        *P_INT_Clear = C_IRQ1_TMA;
    }
}
 
void IRQ5()
{// 数码管闪烁
    if( (C_IRQ5_2Hz & *P_INT_Ctrl) != 0)
    {
switch(clock_status){
        case RUN:
            opposite_dots();
            show_hour = show_minute = show_second = 0xffff;
            break;
        case CHGSECOND:
            show_second ^= 0xffff;
            show_minute = show_hour = 0xffff;
            break;
        case CHGMINUTE:
            show_minute ^= 0xffff;
            show_second = show_hour = 0xffff;
            break;
        case CHGHOUR:
            show_hour ^= 0xffff;
            show_second = show_minute = 0xffff;
            break;
        case TIME:
            show_second = 0xffff;
            show_minute = show_hour = 0x0000;
            break;
        case CHGTIME:
            show_second ^= 0xffff;
            show_minute = show_hour = 0x0000;
            break;
        }
        *P_INT_Clear = C_IRQ5_2Hz;
    }
}
 
 
 
 
void IRQ6()
{   // 每10ms扫描一次键盘
    static unsigned int old_key = 0;        
    static unsigned int key_count = 0;
    unsigned int current_key;
    
    if( (C_IRQ6_TMB2 & *P_INT_Ctrl) != 0)
    {   current_key = *P_IOA_Data & 0x0007;
        if( current_key != 0)
        {           //有按键
            if( key_status == NOKEY )   
            {   old_key = current_key;
                key_count++;
                key_status = PRESSING;
            }else{
                if( current_key == old_key) //不相等，抖动
                {
                    if( ++key_count >= 50)   
//有>5次扫描的值相等，说明不是抖动，判断按键值
                    {   if(current_key == 0x0001) key_code = 1;
                        if(current_key == 0x0002) key_code = 2;
                        if(current_key == 0x0004) key_code = 3;
                    }
                }else{
                    // 抖动
                    old_key = 0;
                    key_count = 0;
                    key_status = NOKEY;
                }
            }
        }else{          //无按键
            old_key = 0;
            key_count = 0;
            if( key_status == PRESSING ) key_status = PRESSED;  //按键释放了
        }
        *P_INT_Clear = C_IRQ6_TMB2;
    }
}