单片机的驱动程序.docx

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1、单片机液晶显示驱动程序<用C语言写的）要求是：RS232接口单片机液晶显示模块PC机上使用串口调试助手的设置如下:串口设置：波特率9600，无奇偶校验，数据位8位，停止位1位。发送数据时必须以$开始，无结束字符。如$1234，就可以直接发送。TMOD=0x20。TH1=0xfd。TL1=0xfd。PCON=0x00。SCON=0x50。TR1=1。ES=0。#include#include#includesbitRS=P2^5。sbitRW=P2^6。sbitEnable

2、=P2^7。sbitcs=P1^0。sbitsck=P1^1。sbitsi=P1^3。sbitso=P1^2。sbitclflag0=ACC^0。voidCheckBF(void>。voidLCD_WtoiR(chardatas>。voidLCD_WtData(chardatas>。voidLCD_Clr(void>。voidLCD_Init(void>。voidLCD_SFLine(void>。voidLCD_SSLine(void>。voidLCD_printf(charlines,char*p>。voidReadLin

3、e(charlines,char*p>。voidoutbyt(chark>。charinbyt(void>。voidwren_cmd(chark>。charrdsr_cmd(void>。voidwip_poll(void>。voidwrsr_cmd(void>。voidCheckBF(>/*检查忙碌状态*/{charflag。flag=0xff。while((flag&0x80>!=0>11/11{RS=0。RW=1。Enable=0。Enable=1。flag=P0。Enable=0。}RW=0。}voidLCD_Wtoi

4、R(chardatas>/*指令函数*/{CheckBF(>。Enable=0。RS=0。Enable=1。P0=datas。Enable=0。}voidLCD_WtData(chardatas>/*数据写入*/{CheckBF(>。Enable=0。RS=1。RW=0。Enable=1。P0=datas。Enable=0。}voidLCD_Clr(>/*清零*/{LCD_WtoiR(1>。}voidLCD_Init(>/*初始化*/{LCD_WtoiR(0x38>。/*(0x3c>?第一行或第二行*/b5E2RGbCAPL

5、CD_WtoiR(0x0e>。/*(0x0c>?是否显示光标*/p1EanqFDPwLCD_WtoiR(0x06>。/*(0x07>?光标左移或右移*/}voidLCD_SFLine(>/*显示第一行*/{LCD_WtoiR(0x80>。11/11}voidLCD_SSLine(>/*显示第二行*/{LCD_WtoiR(0xc0>。}voidLCD_printf(charlines,char*p>/*数据输出*/DXDiTa9E3d{if(lines==1>LCD_SFLine(>。elseLCD_SSLine(>。whil

6、e(*p=='$'>{while(*p!=''>{LCD_WtData(*p>。p++。}}}voidReadLine(charlines,char*p>/*读取数据*/RTCrpUDGiT{charnumber,i。if(lines==1>{number=0x80。LCD_SFLine(>。}else{number=0xc0。LCD_SSLine(>。}for(i=0。i<=19。i++>{LCD_WtoiR(number>。CheckBF(>。Enable=0。RS=1。RW=1。Enable=1。*p=P0。11/

7、11number++。p++。CheckBF(>。Enable=0。}*p=''。}voidoutbyt(chark>/*sendsbytetoepprom*/5PCzVD7HxA{chari。for(i=0。i<8。i++>/*useiasbitcountertoeight*/jLBHrnAILg{sck=0。/*bringscklow*/si=k&0x80。/*siisalwaysequaltok'shighestbit*/xHAQX74J0Xsck=1。/*bringsckhigh*/k<<=1。/*shiftda

8、takleft1*/}}/******************************************************/LDAYtRyKfEcharinbyt(void>/*recievesbytefromepprom*/Zzz6ZB2Ltk{chari,k。for(i=0