common.c

AVR系列单片机ATMEGA64开发的LED显示屏程序 内容包括ATMEGA64大部分资源的初始化程序

#include <include.h>




/***********************************************************************
Delay routine
NB! Remember to set CPU_CLOCK in MHz before using this delay function.
***********************************************************************/

void waitms(long milliseconds)
{
  long longloop;
  int shortloop;
  int calc_adj = F_CPU <<6;
  for (longloop=0; longloop<milliseconds; longloop++)
  {
    for (shortloop=0; shortloop<calc_adj; shortloop++) NOP();
  }
}

void waitus(long microseconds)
{
  long longloop;
  int shortloop;
  int calc_adj = F_CPU >> 5;
  for (longloop=0; longloop<microseconds; longloop++)
  {
    for (shortloop=0; shortloop<calc_adj; shortloop++) NOP();
  }
}

/***********************************************************************
End of code listing
***********************************************************************/