#include <reg51.h>
#include<string.h>
#define uchar unsigned char
#define uint unsigned int //宏定义
sbit CS=P1^1;
sbit CLK=P1^4;
sbit DIO=P1^5;
sbit Frq_Output=P3^0;
sbit K1=P1^0;
uint Frq;
//字符液晶显示缓冲
uchar code prompt[]=
"please press K1 and wait for a while,current frequency will show on the LCD";
uchar LCD_disp_buffer[]="frequency-----HZ";
uchar count=0;
void initialise();
void showstring(uchar str[]);
//延时
void delay(uchar ms)
{
uchar i;
while(ms--) for(i=0;i<120;i++);
}
//--------------------------------------------------
//读取 A/D 转换结果
//--------------------------------------------------
uchar Read_AD()
{
uchar i,d=0;
//ADC0832 初始化
CS=0;
CLK=0;DIO=1;
CLK=1;DIO=0;
CLK=0;DIO=1;
CLK=1;DIO=0;
CLK=0;DIO=0;
CLK=1;DIO=1;
CLK=0;CLK=1; //读取一字节的转换结果
for(i=0;i<8;i++)
{
CLK=0;
