freescale

来自「Freescale 系列单片机常用模块与综合系统设计」· 代码 · 共 24 行

#include "IO_Map.h"
#include "variables.h"

void Beep_Ctrl(unsigned char n)    
{
    if(beep_delay == 0) 
    {
      if(time_f1.bit2 == 1) 
      {
         time_f1.bit2 = 0;
         PTAD = 0;
         beep_delay = beep_table[2 * (n-beep_cnt) + 1];
      } 
      else
      {
          if(beep_cnt != 0) 
          {
              time_f1.bit2 = 1;
              beep_cnt--;
              beep_delay = beep_table[2 * (n-beep_cnt)];
          }
      }
  }
}