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1、凌阳61单片机使用7段数码管显示数字时钟的程序#include#include//中断函数定义voidIRQ1(void)__attribute__((ISR));voidIRQ5(void)__attribute__((ISR));voidIRQ6(void)__attribute__((ISR));enum{RUN,CHGSECOND,CHGMINUTE,CHGHOUR}clock_status;//时钟的状态unsignedinthour,minute,second;unsignedin
2、tshow_hour,show_minute,show_second;enum{NOKEY,PRESSING,PRESSED}key_status;//键盘按下与否的状态unsignedkey_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constunsignedintzhixingma[]={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constunsig
3、nedintweiduanma[]={0x0002,0x0004,0x0008,0x0010,0x0020,0x0040};//数码管的两个DD引脚,为时,中间的冒号亮constunsignedintwei_DD=0x0081;voiddisplay(unsignedintwei,unsignedintnumber){*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]
4、(*P_IOB_Buffer&wei_DD);}//取反数码管中间的冒号voidop
5、posite_dots(){*P_IOB_Data=wei_DD^(*P_IOB_Buffer);}voiddelay(unsignedinthowlong){while(howlong--){unsignedinttemp=0x00ff;*P_Watchdog_Clear=1;while(temp--);}}voidinit(){INT_OFF();*P_IOA_Dir=0xff00;*P_IOA_Attrib=0xff00;*P_IOB_Dir=0x00ff;*P_IOB_Attrib=0x00ff;*P_TimerA_Data=0xffff-
6、256;*P_TimerA_Ctrl=C_SourceA_1
7、C_SourceB_256Hz;*P_INT_Ctrl=C_IRQ1_TMA
8、C_IRQ6_TMB2
9、C_IRQ5_2Hz;INT_IRQ();}voidchange_clock(){unsignedintkey_code=get_key();staticunsignedintmax;switch(key_code){//key_code==0willdonothingcase1:switch(clock_status){caseCHGSECOND:if(++second==60)sec
10、ond=0;break;caseCHGMINUTE:if(++minute==60)minute=0;break;caseCHGHOUR:if(++hour==24)hour=0;break;default:break;}break;case2:switch(clock_status){caseCHGSECOND:if(--second==0)second=59;break;caseCHGMINUTE:if(--minute==0)minute=59;break;caseCHGHOUR:if(--hour==0)hour=23;break;defa
11、ult:break;}break;case3:switch(clock_status){caseRUN:clock_status=CHGSECOND;break;caseCHGSECOND:clock_status=CHGMINUTE;break;caseCHGMINUTE:clock_status=CHGHOUR;break;caseCHGHOUR:clock_status=RUN;break;}break;default:break;}}intmain(){init();while(1){change_clock();if(show_secon
12、d){display(5,second%10);delay(1);display(4,second/10);delay(1
