单片机凌阳61单片机时钟程序（可报时）

#include <SPCE061v004.h> #include <unspmacro.h> //中断函数定义 void IRQ1(void) __attribute__((ISR)); unsigned int hour,minute,second; unsigned int show_hour=0xffff, show_minute=0xffff, show_second=0xffff; // 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, 0x7d00, 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 void display(unsigned int wei, unsigned int number) { *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] ; } //取反数码管中间的冒号 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 - 2048; *P_TimerA_Ctrl = C_SourceA_1 | C_SourceB_2048Hz; *P_INT_Ctrl = C_IRQ1_TMA ; INT_IRQ(); } 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( 1 ) { second++; if(second >= 60 ) second=0, minute++; if(minute >= 60 ) minute=0, hour++; if(hour >= 24 ) hour=0; } *P_INT_Clear = C_IRQ1_TMA; } }