clk_isr_fw.c

来自「嵌入式软件构件：TMR计时器管理、CLK实时时钟、KEY键盘扫描、LED数码显示」· C语言 代码 · 共 23 行

//在1秒中断中放入下面这段程序
#include "..\includes\includes.h"
#if FW_CLK_EN
void  ClkUpdateTime (void)
{
    if (ClkSec >= 59) {                     /* See if we have completed one minute yet                 */
        ClkSec = 0;                         /* Yes, clear seconds                                      */
        if (ClkMin >= 59) {                 /*    See if we have completed one hour yet                */
            ClkMin = 0;                     /*    Yes, clear minutes                                   */
            if (ClkHr >= 23) {              /*        See if we have completed one day yet             */
                ClkHr = 0;                  /*        Yes, clear hours ...                             */
             } else {
                ClkHr++;                    /*        No,  increment hours                             */
            }
        } else {
            ClkMin++;                       /*    No,  increment minutes                               */
        }
    } else {
        ClkSec++;                           /* No,  increment seconds                                  */
    } 
}
#endif