| 2005-12-17 9:51:29 原作者:明皓 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-------P2.0 DB1-----P1.1 DB5-----P1.5 RS-------P2.1 DB2-----P1.2 DB6-----P1.6 E--------P2.2 DB3-----P1.3 DB7-----P1.7 VLCD接1K電阻到GND --------------------------------------------------- [注:AT89S51使用12M晶振] =============================================================*/ #define LCM_RW P2_0 //定義引腳 #define LCM_RS P2_1 #define LCM_E P2_2 #define LCM_Data P1 #define Busy 0x80 //用于檢測LCM狀態(tài)字中的Busy標(biāo)識 ＃i nclude <at89x51.h> void WriteDataLCM(unsigned char WDLCM); void WriteCommandLCM(unsigned char WCLCM,BuysC); unsigned char ReadDataLCM(void); unsigned char ReadStatusLCM(void); 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); unsigned char code uctech[] = {"uctech"}; unsigned char code net[] = {"uctech.icpcn.com"}; void main(void) { Delay400Ms(); //啟動等待,等LCM講入工作狀態(tài) LCMInit(); //LCM初始化 Delay5Ms(); //延時片刻(可不要) DisplayListChar(0, 5, uctech); DisplayListChar(0, 0, net); ReadDataLCM();//測試用句無意義 while(1); } //寫數(shù)據(jù) void WriteDataLCM(unsigned char WDLCM) { ReadStatusLCM(); //檢測忙 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 LCM_E = 0; //延時 LCM_E = 1; } //寫指令 void WriteCommandLCM(unsigned char WCLCM,BuysC) //BuysC為0時忽略忙檢測 { if (BuysC) ReadStatusLCM(); //根據(jù)需要檢測忙 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); //檢測忙信號 return(LCM_Data); } void LCMInit(void) //LCM初始化 { LCM_Data = 0; WriteCommandLCM(0x38,0); //三次顯示模式設(shè)置,不檢測忙信號 Delay5Ms(); WriteCommandLCM(0x38,0); Delay5Ms(); WriteCommandLCM(0x38,0); Delay5Ms(); WriteCommandLCM(0x38,1); //顯示模式設(shè)置,開始要求每次檢測忙信號 WriteCommandLCM(0x08,1); //關(guān)閉顯示 WriteCommandLCM(0x01,1); //顯示清屏 WriteCommandLCM(0x06,1); // 顯示光標(biāo)移動設(shè)置 WriteCommandLCM(0x0C,1); // 顯示開及光標(biāo)設(shè)置 } //按指定位置顯示一個字符 void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData) { Y &= 0x1; X &= 0xF; //限制X不能大于15,Y不能大于1 if (Y) X = 0x40; //當(dāng)要顯示第二行時地址碼 0x40; X = 0x80; // 算出指令碼 WriteCommandLCM(X, 0); //這里不檢測忙信號,發(fā)送地址碼 WriteDataLCM(DData); } //按指定位置顯示一串字符 void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData) { unsigned char ListLength; ListLength = 0; Y &= 0x1; X &= 0xF; //限制X不能大于15,Y不能大于1 while (DData[ListLength]>0x20) //若到達(dá)字串尾則退出 { if (X <= 0xF) //X坐標(biāo)應(yīng)小于0xF { DisplayOneChar(X, Y, DData[ListLength]); //顯示單個字符 ListLength ; X ; } } } //5ms延時 void Delay5Ms(void) { unsigned int TempCyc = 5552; while(TempCyc--); } //400ms延時 void Delay400Ms(void) { unsigned char TempCycA = 5; unsigned int TempCycB; while(TempCycA--) { TempCycB=7269; while(TempCycB--); }; } |
 |
|
 |
 |
 |
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 |
關(guān)于我們 | 聯(lián)系我們 | 廣告合作 | 付款方式 | 使用幫助 | 機(jī)電之家 | 會員助手 | 免費(fèi)鏈接 |  |
66821730(技術(shù)支持)66821730(廣告投放) 41031197(編輯) 58733127(審核)
本站提供的機(jī)電設(shè)備，機(jī)電供求等信息由機(jī)電企業(yè)自行提供，該企業(yè)負(fù)責(zé)信息內(nèi)容的真實(shí)性、準(zhǔn)確性和合法性。
機(jī)電之家對此不承擔(dān)任何保證責(zé)任，有侵犯您利益的地方請聯(lián)系機(jī)電之家，機(jī)電之家將及時作出處理。
Copyright 2007 機(jī)電之家 Inc All Rights Reserved.機(jī)電之家-由機(jī)電一體化網(wǎng)更名-聲明
電話：0571-87774297 傳真：0571-87774298
杭州濱興科技有限公司提供技術(shù)支持
 |
主辦：杭州市高新區(qū)（濱江）機(jī)電一體化學(xué)會 網(wǎng)站經(jīng)營許可證:浙B2-20080178-1
|
 |
