/*============================================================
//HC-SRO4?超聲波測(cè)距模塊?DEMO?程序
//??QQ：?517535000
//淘寶店鋪:http://shop58246706.taobao.com
?????
==============================================================
SMC1602A（16*2）模擬口線接線方式
連接線圖:	
???????---------------------------------------------------
???????|LCM-----51???|	LCM-----51???|	LCM------51??????|
???????--------------------------------------------------|
???????|DB0-----P1.0?|	DB4-----P1.4?|	RW-------P3.4????|
???????|DB1-----P1.1?|	DB5-----P1.5?|	RS-------P3.3????|
???????|DB2-----P1.2?|	DB6-----P1.6?|	E--------P3.5????|
???????|DB3-----P1.3?|	DB7-----P1.7?|	VLCD接1K電阻到GND|
???????---------------------------------------------------
接線：模塊TRIG接?P2.6??ECH0?接P2.7

本程序源碼只供學(xué)習(xí)參考，不得應(yīng)用于商業(yè)用途，如有需要請(qǐng)聯(lián)系作者。

[注:AT89x51使用12M或11.0592M晶振實(shí)測(cè)使用11.0592M]
=============================================================*/
#include?“reg52.H“		//器件配置文件
#include?“intrins.h“
#define?Busy????0x80?//用于檢測(cè)LCM狀態(tài)字中的Busy標(biāo)識(shí)

sbit??RX=P1^0;
sbit??TX=P1^1;

sbit?LCM_RW=P2^6;?//定義LCD引腳
sbit?LCM_RS=P2^5;
sbit?LCM_E?=P2^7;
sbit?LCM_Data=P0;

sbit?Key_Data=P3^3;?//定義Keyboard引腳
sbit?Key_CLK=P3^2;


void?LCMInit（void）;
void?DisplayOneChar（unsigned?char?X?unsigned?char?Y?unsigned?char?DData）;
void?DisplayListChar（unsigned?char?X?unsigned?char?Y?unsigned?char?code?*DData）;
void?Delay5Ms（void）;
void?Delay400Ms（void）;
void?Decode（unsigned?char?ScanCode）;
void?WriteDataLCM（unsigned?char?WDLCM）;
void?WriteCommandLCM（unsigned?char?WCLCMBuysC）;

unsigned?char?ReadDataLCM（void）;
unsigned?char?ReadStatusLCM（void）;
unsigned?char?code?mcustudio[]?={“mcustudio.com.cn“};
unsigned?char?code?email[]?=????{“fhwxaoo@163.com?“};
unsigned?char?code?Cls[]?=??????{“????????????????“};
unsigned?char?code?ASCII[15]?=????{‘0‘‘1‘‘2‘‘3‘‘4‘‘5‘‘6‘‘7‘‘8‘‘9‘‘.‘‘-‘‘M‘};

static?unsigned?char?DisNum?=?0;?//顯示用指針				??
???????unsigned?int??time=0;
	???unsigned?long?S=0;
	???bit??????flag?=0;
	???unsigned?char?disbuff[4]	???={?0000};


//寫(xiě)數(shù)據(jù)
void?WriteDataLCM（unsigned?char?WDLCM）?
{
	ReadStatusLCM（）;?//檢測(cè)忙
	LCM_Data=WDLCM;
	LCM_RS=1;
	LCM_RW=0;
	LCM_E=0;?//若晶振速度太高可以在這后加小的延時(shí)
	LCM_E=0;?//延時(shí)
	LCM_E=1;
}

//寫(xiě)指令
void?WriteCommandLCM（unsigned?char?WCLCMBuysC）?//BuysC為0時(shí)忽略忙檢測(cè)
{
	if?（BuysC）?ReadStatusLCM（）;?//根據(jù)需要檢測(cè)忙
	LCM_Data=WCLCM;
	LCM_RS=0;
	LCM_RW=0;	
	LCM_E=0;
	LCM_E=0;
	LCM_E=1;	
}

//讀數(shù)據(jù)
unsigned?char?ReadDataLCM（void）
{
	LCM_RS=1;?
	LCM_RW=1;
	LCM_E=0;
	LCM_E=0;
	LCM_E=1;
	return（LCM_Data）;
}

//讀狀態(tài)
unsigned?char?ReadStatusLCM（void）
{
	LCM_Data=0xFF;?
	LCM_RS=0;
	LCM_RW=1;
	LCM_E=0;
	LCM_E=0;
	LCM_E=1;
	while?（LCM_Data?&?Busy）;?//檢測(cè)忙信號(hào)
	return（LCM_Data）;
}

void?LCMInit（void）?//LCM初始化
{
	LCM_Data?=?0;
	WriteCommandLCM（0x380）;?//三次顯示模式設(shè)置，不檢測(cè)忙信號(hào)
	Delay5Ms（）;?
	WriteCommandLCM（0x380）;
	Delay5Ms（）;?
	WriteCommandLCM（0x380）;
	Delay5Ms（）;?

	WriteCommandLCM（0x381）;?//顯示模式設(shè)置開(kāi)始要求每次檢測(cè)忙信號(hào)
	WriteCommandLCM（0x081）;?//關(guān)閉顯示
	Writ

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????5287??2009-12-22?22:40??超聲波測(cè)距51C程序\51.C

?????目錄??????????0??2010-03-12?19:25??超聲波測(cè)距51C程序

-----------?---------??----------?-----??----

?????????????????5287????????????????????2