#include <absacc.h>
#include <reg51.h>
#define DA7521L XBYTE[0x7fff]
#define DA7521H XBYTE[0xbfff]
#define UP 0x010
#define T  1000
#define uint  unsigned int

void  dlms(uint a);

void stair(void)
{ uint i;
  for(i=0;i<=4095;i=i+UP)
  { DA7521L=i%256;
    DA7521H=i/256;
    dlms(T);
  }
}