isp.c

来自「51单片机上网的引导代码」· C语言 代码 · 共 29 行

#include "REG516.H"
#include "def.h"

extern void Start_Timer0(WORD count); 

void Erase_64k(void)
{
   SFRCN=0X22; //ERASE
   Start_Timer0(0X3cb0); //15MS
   PCON|=0X01; //IDLE;
}

void Program_64k(WORD RomAddr, BYTE xdata *pxdata, WORD Length0)
{
   WORD data Length=Length0;
   SFRCN=0X21; //ERASE
   SFRAL=RomAddr;
   SFRAH=RomAddr>>8;
   while(Length--)
   {
      SFRFD=*pxdata++;
      Start_Timer0(0Xff59); //50us
	  PCON|=0X01; //IDLE;
	  ++SFRAL;
	  if(!SFRAL) ++SFRAH;
   }

}