液晶1602和12864原理图程序.doc

1:12864protues图2：范例程序滚动显示“白日依山尽，黄河入海流。”#include#include#define uchar unsigned char#define uint unsigned intsbit e=P20;sbit rw=P21;sbit rs=P22;sbit cs2=P23;sbit cs1=P24;sbit busy=P07;sbit reset=P25;uchar code data1=; /省略了字模O(_)O哈哈/*延时程序*delay() uchar q; for(q=0;q10;q+) ; /*写控制命令*trans1(uchar receive) delay(); e=1; rw=0; rs=0; P0=receive; delay(); e=0;/*写数据命令*trans2(uchar receive1) delay(); e=1; rw=0; rs=1; P0=receive1; delay(); e=0;/*初始化程序*init() uchar i; delay(); trans1(0x3e); /显示开 delay(); trans1(0x40); / 起始行位置为第一行/*主程序*void main(void) uint k=0,q,clycle,ct=0,ct2=63,yy=0,ty; uint w; delay(); init(); /初始化 delay();while(1) w=0; trans1(0xb8); /页0显示 trans1(0x4f); /从0列开始显示 for(q=0;q4;q+) /八页显示 for(clycle=0;clycle2;clycle+) ty=0x4f; cs1=0; cs2=1; if(clycle=1) cs1=1;cs2=0;delay();ty=0x40; for(yy=0;yy3;yy+) /*64*列显示 trans1(0xb8+q*2); trans1(ty+16*yy); delay(); for(k=0;k32;k+) if(k=16) trans1(0xb8+q*2+1);trans1(ty+16*(yy); trans2(data1w+k); w+=32; ct2-; cs1=0;cs2=0; for(k=0;k200;k+) trans1(0xc0+ct2); if(ct2=0) ct2=63;reset=1;reset=0; 3:1602protues图4：例程#include#include#define uchar unsigned char#define uint unsigned intsbit ds=P20;sbit wr=P21;sbit e=P22;uchar clycle;uchar code data_1=you are the NO.1;uchar code data_2=we support you;/*时间延时*void delay(void) /延时时间为十毫秒TH0=0XFF; TL0=0X9C; TR0=1; while(!TF0); TF0=0; TR0=0;/*数据发送*dis(uchar receive) ds=clycle; e=0; wr=0; P0=receive; delay(); e=1; delay(); e=0;/*初始化设置*init() uchar temp; temp=0X3F; /数据显示方式 dis(temp); delay(); temp=0X0F; /开显示，显示光标，光标闪 dis(temp); delay(); temp=0X06; / dis(temp); delay(); temp=0X14; /光标左移 dis(temp);/*主程序*void main(void) uint i,k; TMOD=0x01; TH0=0XFF; TL0=0X9C; EA=1; ET0=1; clycle=0; init(); /初始化 delay(); k=0x80; /第一行数据显示地址 clycle=0; dis(k); clycle=1; for(i=0;i16;i+) k=data_1i; dis(k); delay(); k=0xc0; /第二行数据显示地址 clycle=0; dis(k); clycle=1; for(i=0;i14;i+) k=data_2i; dis(k); while(1);5:16*16LED点阵显示protues6:程序示例#include#include#define uchar unsigned char#define uint unsigned intsbit oe=P00;sbit mr=P01;sbit st_cp=P02;sbit control=P10;sbit ds=P30;sbit sh_cp=P31;uchar trans;uchar buff4;uchar word,clycle,h,yid=0,d=10;uint i=0;uchar code dis_data=/*- 文字: 好 -*/*- 宋体12; 此字体下对应的点阵为：宽x高=16x16 -*/0x10,0x00,0x11,0xFC,0x10,0x08,0x10,0x10,0xFC,0x20,0x24,0x20,0x24,0x20,0x27,0xFE,0x44,0x20,0x64,0x20,0x18,0x20,0x08,0x20,0x14,0x20,0x26,0x20,0x44,0xA0,0x80,0x40,/*- 文字: 人 -*/*- 宋体12; 此字体下对应的点阵为：宽x高=16x16 -*/0x01,0x00,0x01,0x80,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x02,0x80,0x02,0x80,0x04,0x80,0x04,0x40,0x08,0x60,0x08,0x30,0x10,0x18,0x20,0x0E,0x40,0x04,0x00,0x00,/*- 文字: 一 -*/*- 宋体12; 此字体下对应的点阵为：宽x高=16x16 -*/0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x7F,0xFE,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*- 文字: 生 -*/*- 宋体12; 此字体下对应的点阵为：宽x高=16x16 -*/0x00,0x80,0x10,0xC0,0x10,0x80,0x10,0x88,0x1F,0xFC,0x20,0x80,0x20,0x80,0x40,0x88,0x9F,0xFC,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x84,0x7F,0xFE,0x00,0x00,/*- 文字: 平 -*/*- 宋体12; 此字体下对应的点阵为：宽x高=16x16 -*/0x7F,0xFC,0x01,0x00,0x21,0x10,0x11,0x18,0x09,0x10,0x0D,0x20,0x09,0x40,0x01,0x00,0xFF,0xFE,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,/*- 文字: 安 -*/*- 宋体12; 此字体下对应的点阵为：宽x高=16x16 -*/0x02,0x00,0x01,0x00,0x3F,0xFE,0x20,0x04,0x44,0x08,0x06,0x00,0x04,0x00,0xFF,0xFE,0x08,0x20,0x08,0x20,0x08,0x40,0x06,0x80,0x01,0x00,0x06,0xC0,0x18,0x38,0xE0,0x10;/uchar code scan_data16=0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f;/*缓冲器change*dis_c() for(h=0;h16;h+) change(); /调整数据 data_out(); /发射数据 for(i=0;i250;i+) ; st_cp=0; st_cp=1; oe=0; control=0; P2=h; for(i=0;i=0;s-) buff2*s+1=dis_dataword+1+32*s+2*h; buff2*s=dis_dataword+32*s+2*h; /*数据输出*data_out() uchar s; uchar inc,tempyid,temp; if(yid8) inc=0; else inc=1; for(s=0+inc;s2+inc;s+) if(yid8) tempyid=yid; else tempyid=yid-8; temp=(buffs(8-tempyid); SBUF=temp; while(!TI) ; TI=0; control=1; oe=1; st_cp=0; / for(i=0;i10;i+) ; st_cp=1;/*主程序*void main(void) PCON=0x00; SCON=0X00; oe=1; mr=0; mr=1; word=0; control=1; while(1) while(yid16) for(i=0;id;i+) dis_c(); yid+; /for(i=0;i=160) word=0; / for(i=0;i5000;i+) ;、液晶屏显示模块与数码管相比，它显得更为专业、漂亮。液晶显示屏以其微功耗、体积小、显示内容丰富、超薄轻巧、使用方便等诸多优点，在通讯、仪器仪表、电子设备、家用电器等低功耗应用系统中得到越来越广泛的应用，使这些电子设备的人机界面变得越来越直观形象，目前已广泛应用于电子表、计算器、IC卡电话机、液晶电视机、便携式电脑、掌上型电子玩具、复印机、传真机等许多方面。1602字符型液晶模块(带背光)，是目前工控系统中使用最为广泛的液晶屏之一。1602采用标准的16脚接口，其引脚功能如下：第1脚：VSS为电源地，接GND。第2脚：VDD接5V正电源。第3脚：VL为液晶显示器对比度调整端，接正电源时对比度最弱，接地电源时对比度最高，对比度过高时会产生“鬼影”，使用时可以通过一个10K的电位器调整对比度。第4脚：RS为寄存器选择，高电平时选择数据寄存器、低电平时选择指令寄存器。第5脚：RW为读写信号线，高电平时进行读操作，低电平时进行写操作。当RS和RW共同为低电平时可以写入指令或者显示地址，当RS为低电平RW为高电平时可以读忙信号，当RS为高电平RW为低电平时可以写入数据。第6脚：E端为使能端，当E端由高电平跳变成低电平时，液晶模块执行命令。第714脚：D0D7为8位双向数据线。第15脚：BLA背光电源正极(+5V)输入引脚。第16脚：BLK背光电源负极，接GND。 1602液晶模块内带标准字库，内部的字符发生存储器（CGROM）已经存储了192个57点阵字符，32个510点阵字符。另外还有字符生成RAM（CGRAM）512字节，供用户自定义字符。如表1所示，这些字符有：阿拉伯数字、英文字母的大小写、常用的符号、和日文假名等，每一个字符都有一个固定的代码，比如大写的英文字母“A”的代码是01000001B（41H），显示时模块把地址41H中的点阵字符图形显示出来，我们就能看到字母“A”。 液晶显示模块是一个慢显示器件，所以在执行每条指令之前一定要确认模块的忙标志为低电平，表示不忙，否则此指令失效。要显示字符时要先输入显示字符地址，也就是告诉模块在哪里显示字符。 C51程序如下： 注:AT89S51使用12M晶振/*=*/#include #define LCM_Data P1#define Busy 0x80 /用于检测LCM状态字中的Busy标识sbitLCM_RW P20; /定义引脚sbitLCM_RS P21;sbitLCM_E P22;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 csdn = csdn;unsigned char code net = ;void main(void)LCMInit(); /LCM初始化Delay5Ms(); /延时片刻(可不要)DisplayListChar(0, 5, csdn);DisplayListChar(1, 0, net);ReadDataLCM();/测试用句无意义while(1);/写数据void WriteDataLCM(unsigned char WDLCM)ReadStatusLCM(); /检测忙LCM_Data = WDLCM;LCM_RS = 1;LCM_RW = 0;LCM_E = 0; /若晶振速度太高可以在这后加小的延时LCM_E = 0; /延时LCM_E = 1;/写指令void WriteCommandLCM(unsigned char WCLCM,BuysC) /BuysC为0时忽略忙检测if (BuysC) ReadStatusLCM(); /根据需要检测忙LCM_Data = WCLCM;LCM_RS = 0;LCM_RW = 0; LCM_E = 0;LCM_E = 0;LCM_E = 1; /读数据unsigned char ReadDataLCM(void)LCM_RS = 1; LCM_RW = 1;LCM_E = 0;LCM_E = 0;LCM_E = 1;return(LCM_Data);/读状态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); /检测忙信号return(LCM_Data);void LCMInit(void) /LCM初始化LCM_Data = 0;WriteCommandLCM(0x38,0); /三次显示模式设置，不检测忙信号Delay5Ms(); WriteCommandLCM(0x38,0);Delay5Ms(); WriteCommandLCM(0x38,0);Delay5Ms(); WriteCommandLCM(0x38,1); /显示模式设置,开始要求每次检测忙信