main.c

来自「QH_MCU_V1.1单片机C源码. 内含实验程序 这是修改版.」· C语言 代码 · 共 53 行

#include <reg51.h>
#include <intrins.h>

#define uchar unsigned char
sbit load = P2^6;
sbit shift = P2^6;
sbit clk = P2^7;

void delay(uchar utimes)
{
  uchar i;
  for(i=0;i<utimes;i++)
  {
    _nop_();
	_nop_();
  }
}

void isr_t0(void) interrupt 1 using 0
{
  static uchar i = 0;
  EA = 0;
  i += 1;
  clk = ~clk;
  if(i == 16)
  {
    ET0 = 0;
    clk = 0;
  }
  EA = 1;

}


void main()
{
  uchar i = 0;
  TMOD = 0x02;
  TH0 = 0x06;
  TL0 = 0x06;
  ET0 = 1;
  EA = 1;
  clk = 0;
  P0 = 0x66;
  load = 0;
  delay(100);
  _nop_();
  load = 1;
  clk = 1;
  TR0 = 1;
  while(1);     //此句要加，否则单片机会进入未知状态
}