不带字库的12864液晶汉字显示程序

/****************************************屏幕显示驱动*****************************************/#include "GT23L24T3Y.h"#include "print.h"#include <stdio.h>#include <string.h>#include "bmp_picture.h"#include "lcd_12864.h"#include "..\user\rtc.h"u8 comTable[]={4,5,6,7,3,2,1,0};extern void Setlcd_Addr ( u8 row,u8 column );//外部函数调用声明extern u8 Num_Code[];//字库获得函数extern u8 Big_Num_Code[];//字库获得函数extern u8 Picture_Code[];//字库获得函数extern u8 arrow1[];extern u8 arrow2[];u8 testlcd[]="测试数据";/************************************************************************//显示中文输出//函数名：print_16//功能：显示16x16点阵字符串。

// 函数名：print_16// 功能：显示16点阵字符串// 形参：// row:x轴// column:y轴// *lcd:显示字符串// logic:显示取反// wei.显示位值// len长度*************************************************************************/void _print_15 ( u8 row,u8 column,const char *lcd,u8 logic ,u8 wei,u8 len){u8 w=0,x=0,y=0,l=0,read_data=0;u8 Length=0;GT_cs1;//字库片选至高for ( l=len; l>0; l=l-2 ) //总字节{w=*lcd;if ( w&0x80 ) //为1则为汉字，为0则为ASCII码{GT_cs0; //字库片选选定GT23_Write ( GT23_write_15 ( lcd ) ); //写入字库指令以及文字地址for ( x=0; x<2; x++ ){Setlcd_Addr (row,column);for(y=0;y<16;y++){read_data=GT23_Read();if(logic == true){// read_data = ~read_data;}WriteData(read_data );}row++;}GT_cs1;//字库片选至高row-=2;column+=16;if(column>=128){row+=2;column=0;}lcd=lcd+2;}}}/************************************************************************//描述：显示中文输出//使用：顶层函数调用参数：row 行column 列*lcd 字符串logic 反白*************************************************************************/ void print_15 ( u8 row,u8 column,const char *lcd,u8 logic ){u8 c=strlen ( lcd );_print_15(row,column,lcd,logic,0,c);}/************************************************************************ //描述：显示图片输出//使用：顶层函数调用参数：row 行column 列*lcd 字符串logic 反白*************************************************************************/ void print_array(u16 row,u16 column,u16 size_x,u16 size_y,const u8 *ptr, u8 logic){u8 w=0,x=0,y=0,l=0,read_data=0;u8 Length=0;for( x=0;x<size_x/8;x++){Setlcd_Addr (row,column);for(y=0;y<size_y;y++){read_data=*( ptr + (y+x*size_y) );if(logic == true){read_data = ~read_data;}WriteData1(read_data);// WriteData1(0XFF);}row++;}}u8 OpMgsCode[][10] ={"病人信息","循环播放","房号与床号","从机音量","对比度","广播""恢复","音乐","主机音量","时间"};u8 DayCode[][7]={"星期天","星期一","星期二","星期三","星期四","星期五","星期六"};void PrintMainFace(time mytime,u8 PeopleNum){//待机界面函数u8 Hrd,Ten,One;Lcd_Clr();//清屏print_15 ( 0,16, "月",false );print_15 ( 0,48, "日",false );print_15 ( 0,70, &DayCode[mytime.day][0],false );//显示星期//日期显示Ten=mytime.month/10;One=mytime.month%10;print_array(0 , 0, 16 , 7 , &Num_Code[Ten*14], false);print_array(0 , 8, 16 , 7 , &Num_Code[One*14], false);Ten=mytime.date/10;One=mytime.date%10;print_array(0 , 32, 16 , 7 , &Num_Code[Ten*14], false);print_array(0 , 40, 16 , 7 , &Num_Code[One*14], false);//时间显示Ten=mytime.hour/10;One=mytime.hour%10;print_array(2 , 20, 32 , 21 , &Big_Num_Code[Ten*84], false);print_array(2 , 42, 32 , 21 , &Big_Num_Code[One*84], false);Ten=mytime.minute/10;One=mytime.minute%10;print_array(2 , 68, 32 , 21 , &Big_Num_Code[Ten*84], false);print_array(2 , 90, 32 , 21 , &Big_Num_Code[One*84], false);//住院人数显示print_15 ( 6,32, "住院人数",false );Hrd=PeopleNum/100;PeopleNum=PeopleNum%100;Ten=PeopleNum/10;One=PeopleNum%10;if(Hrd ){print_array(6 , 96, 16 , 7 , &Num_Code[Hrd*14], false);}print_array(6 , 102, 16 , 7 , &Num_Code[Ten*14], false);print_array(6 , 110, 16 , 7 , &Num_Code[One*14], false);}void PrintPictureFace(u8 Index){time mytime;Lcd_Clr();//清屏mytime.month = 10;mytime.date = 16;mytime.hour = 12;mytime.minute = 15;mytime.day =3;PrintMainFace(mytime,96);//print_array(0 , 10, 48 , 8 , arrow1, false);//左箭头显示// print_array(0,38 ,48 ,48 , &Picture_Code[288*Index], false);//图片显示// print_array(0,108, 48 , 8 , arrow2, false); //右箭头显示//print_15 ( 6,33, &OpMgsCode[0][Index],false );//提示信息显示}。

以下是我写的12864LCD并行口显示程序，矩阵键盘接的是P1口，P0口接LCD上DB0~ DB7。

/***************头文件******************************/#define _12864_h/*****包含头文件**************/#include<reg51.h>/********定义I/0口**********/#define LCD12864_DATA P0#define GPIO_KEY P1sbit LCD12864_E = P2^7;sbit LCD12864_RW = P2^5;sbit LCD12864_RS = P2^6;sbit LCD12864_RET= P2^0;sbit LCD12864_PSB =P2^2;/*声明全局变量*/extern unsigned char keyvalue;/******声明全局函数*********/void Delay1ms(unsigned int); //声明延时函数unsigned char KeyDown(void);void BusyChk_12864(void); //声明忙检测函数void WrCom(unsigned char); //声明写入命令函数//unsigned char ReDat(void); //声明读数据函数void WrDat(unsigned char); //声明写数据函数void LcdInit(void); //12864初始化函数void SetAddress(unsigned char ,unsigned char); //设置地址转换void DisplayString(unsigned char ,unsigned char,unsigned char *p);//行显示字符#endif//***************************12864.c文件*****************************//#include"12864.h"#include<reg51.h>#include"string.h"#define LCM_ST7920_FIRST_LINE_ADDRESS 0x80#define LCM_ST7920_SECOND_LINE_ADDRESS 0x90#define LCM_ST7920_THIRD_LINE_ADDRESS 0x88#define LCM_ST7920_FOURTH_LINE_ADDRESS 0x98/*定义全局变量*/unsigned char keyvalue=0;/****************************************************************************** ** 函数名: Delay1ms* 函数功能: 延时函数，延时1ms* 输入: c* 输出 e : 无* 说名: 该函数是在12MHZ晶振下，12分频单片机的延时。

/******************************************************************** *************************///程序部分开始///******************************************************************** *************************//头文件定义///******************************************************************** *************************/#include <reg52.h> // 包含头文件#include <string.h> //用于指针/******************************************************************** *************************//接口定义///******************************************************************** *************************/#define LCM12864_DB7_DB0 P0 // 定义LCM12864的数据总线sbit LCM12864_RS = P2 ^ 3; // 定义LCM12864的RS控制线sbit LCM12864_RW = P2 ^ 4; // 定义LCM12864的RW控制线sbit LCM12864_E = P2 ^ 2; // 定义LCM12864的E控制线sbit LCM12864_CS1 = P2 ^ 7; // 定义LCM12864的CS1控制线sbit LCM12864_CS2 = P2 ^ 6; // 定义LCM12864的CS2控制线sbit LCM12864_RESET = P2 ^ 5; // 定义LCM12864的RESET控制线sbit LCM12864_LEDK = P2 ^ 0; // 定义LCM12864的LEDK（BLK）控制线/******************************************************************** *************************//数据定义//定义LCM12864的命令字/******************************************************************** *************************/#define LCM12864_DISP_ON 0x3f // 打开LCM12864显示#define LCM12864_DISP_OFF 0x3e // 关闭LCM12864显示#define LCM12864_START_ROW 0xc0 // 显示起始行0，可以用LCM12864_START_ROW+x设置起始行。

无字库12864液晶屏滚动显示程序[转] #include<reg52.h>#include<intrins.h>#include<absacc.h>#define Lcd_Bus P0 //MCU P0<------> LCM#define Disp_On 0x3f//开显示#define Disp_Off 0x3e//关显示#define Col_Add 0x40//列地址#define Page_Add 0xb8//页地址#define Start_Line 0xc0//起始页sbit cs1=P2^3; //Master chip enablesbit cs2=P2^4; //Slave chip enablesbit Enable=P2^2; // mode Enable singlesbit Di=P2^0; //Data or Instrument Selectsbit RW=P2^1; //Write or Readsbit Lcd_Rst=P2^5; //Lcm reset/*****************************字模,此字体下对应的点阵为：宽x高=16x16*****************************/unsigned char code Chinese_character[][32]={{0x02,0xF2,0x12,0x12,0x12,0xFE,0x12,0x12,0x12,0xFE,0x12,0x12,0x 12,0xF2,0x02,0x00 ,0x00,0x7F,0x28,0x24,0x22,0x21,0x20,0x20,0x20,0x21,0x22 ,0x22,0x22,0x7F,0x00,0x00},/*"西",0*/{0x80,0x90,0x8C,0x84,0x84,0xF4,0xA5,0x86,0x84,0x84,0x84,0x84,0x 94,0x8C,0x84,0x00,0x80,0x80,0x80,0x40,0x47,0x28,0x28,0x10,0x28,0x24,0x43 ,0xC0,0x40,0x00,0x00,0x00},/*"安",1*/{0x00,0x42,0x62,0x5A,0xC6,0x10,0x54,0x54,0x54,0xFF,0x54,0x54,0x 7C,0x10,0x10,0x00,0x40,0x23,0x14,0x08,0x17,0x28,0x29,0x49,0x49,0x7F,0x49 ,0x49,0x49,0x49,0x40,0x00},/*"建",2*/{0x10,0x48,0x47,0xCC,0x54,0x44,0x14,0xE8,0x27,0x24,0x2C,0xF4,0x 04,0x04,0x04,0x00,0x10,0x30,0x10,0x0F,0x88,0x48,0x30,0x0F,0x01,0x06,0x00 ,0x3F,0x40,0x40,0x70,0x00},/*"筑",3*/{0x10,0x12,0x92,0x72,0xFE,0x51,0x91,0x00,0x22,0xCC,0x00,0x00,0x FF,0x00,0x00,0x00,0x04,0x02,0x01,0x00,0xFF,0x00,0x04,0x04,0x04,0x02,0x02 ,0x02,0xFF,0x01,0x01,0x00},/*"科",4*/{0x08,0x08,0x88,0xFF,0x48,0x28,0x00,0xC8,0x48,0x48,0x7F,0x48,0x C8,0x48,0x08,0x00,0x01,0x41,0x80,0x7F,0x00,0x40,0x40,0x20,0x13,0x0C,0x0C ,0x12,0x21,0x60,0x20,0x00},/*"技",5*/{0x20,0x20,0x20,0x20,0x20,0x20,0xA0,0x7F,0xA0,0x20,0x20,0x20,0x 20,0x20,0x20,0x00,0x00,0x80,0x40,0x20,0x10,0x0C,0x03,0x00,0x01,0x06,0x08 ,0x30,0x60,0xC0,0x40,0x00},/*"大",6*/{0x40,0x30,0x10,0x12,0x5C,0x54,0x50,0x51,0x5E,0xD4,0x50,0x18,0x 57,0x32,0x10,0x00,0x00,0x02,0x02,0x02,0x02,0x02,0x42,0x82,0x7F,0x02,0x02 ,0x02,0x02,0x02,0x02,0x00},/*"学",4*/{0x00,0x02,0x1C,0xE8,0x00,0x40,0x60,0x58,0x47,0x22,0x20,0x28,0x 30,0xE0,0x40,0x00,0x02,0x02,0x7F,0x00,0x00,0x00,0x7F,0x21,0x21,0x21,0x21 ,0x21,0x7F,0x00,0x00,0x00},/*"冶",0*/{0x40,0x40,0x20,0x20,0x50,0x48,0x44,0xC3,0x44,0x48,0x50,0x50,0x 20,0x60,0x20,0x00,0x40,0x40,0x42,0x42,0x4A,0x72,0x42,0x7F,0x42,0x62,0x5A ,0x42,0x42,0x40,0x40,0x00},/*"金",1*/{0x00,0x00,0x02,0x02,0x02,0x02,0x02,0xFE,0x02,0x02,0x02,0x02,0x 02,0x02,0x00,0x00,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x3F,0x20,0x20,0x20 ,0x20,0x20,0x20,0x20,0x00},/*"工",2*/{0x10,0x12,0xD2,0xFE,0x91,0x11,0x80,0xBF,0xA1,0xA1,0xA1,0xA1,0x BF,0x80,0x00,0x00,0x04,0x03,0x00,0xFF,0x00,0x41,0x44,0x44,0x44,0x7F,0x44 ,0x44,0x44,0x44,0x40,0x00},/*"程",3*/{0x40,0x30,0x10,0x12,0x5C,0x54,0x50,0x51,0x5E,0xD4,0x50,0x18,0x 57,0x32,0x10,0x00,0x00,0x02,0x02,0x02,0x02,0x02,0x42,0x82,0x7F,0x02,0x02 ,0x02,0x02,0x02,0x02,0x00},/*"学",4*/{0xFE,0x02,0x32,0x4A,0x86,0x0C,0x24,0x24,0x25,0x26,0x24,0x24,0x 24,0x0C,0x04,0x00,0xFF,0x00,0x02,0x04,0x83,0x41,0x31,0x0F,0x01,0x01,0x7F ,0x81,0x81,0x81,0xF1,0x00},/*"院",5*/{0x10,0x10,0xD0,0xFE,0x50,0x90,0x00,0x10,0x10,0x10,0xD0,0xFE,0x 10,0x10,0x10,0x00,0x08,0x06,0x01,0xFF,0x00,0x01,0x10,0x08,0x04,0x43,0x80 ,0x7F,0x00,0x00,0x00,0x00},/*"材",0*/{0x20,0x24,0xA8,0x70,0xFF,0x68,0xA4,0x20,0x42,0x8C,0x00,0x00,0x FF,0x00,0x00,0x00,0x08,0x06,0x01,0x00,0xFF,0x00,0x01,0x02,0x02,0x03,0x02 ,0x02,0xFF,0x01,0x01,0x00},/*"料",1*/{0x00,0x08,0x08,0x08,0xFF,0x08,0x08,0xF8,0x00,0xF8,0x08,0x 08,0x08,0xF8,0x00,0x00,0x40,0x20,0x18,0x07,0x00,0x20,0x40,0x3F,0x00,0x7F,0x10 ,0x10,0x10,0x3F,0x00,0x00},/*"加",2*/{0x00,0x00,0x02,0x02,0x02,0x02,0x02,0xFE,0x02,0x02,0x02,0x02,0x 02,0x02,0x00,0x00,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x3F,0x20,0x20,0x20 ,0x20,0x20,0x20,0x20,0x00},/*"工",4*/{0x00,0x00,0x02,0x02,0x02,0x02,0x02,0xFE,0x02,0x02,0x02,0x02,0x 02,0x02,0x00,0x00,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x3F,0x20,0x20,0x20 ,0x20,0x20,0x20,0x20,0x00},/*"工",4*/{0x10,0x12,0xD2,0xFE,0x91,0x11,0x80,0xBF,0xA1,0xA1,0xA1,0xA1,0x BF,0x80,0x00,0x00,0x04,0x03,0x00,0xFF,0x00,0x41,0x44,0x44,0x44,0x7F,0x44 ,0x44,0x44,0x44,0x40,0x00},/*"程",5*/};unsigned char code E[][16]={{0xC0,0x30,0x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00},/*"C",0*/{0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x 20,0x00,0x01,0x00},/*"r",1*/{0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x 22,0x22,0x3F,0x20},/*"a",2*/{0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x 24,0x24,0x19,0x00},/*"s",3*/{0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x 18,0x06,0x01,0x00},/*"y",4*/{0x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x 20,0x11,0x0E,0x00},/*"b",5*/{0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x20,0x20,0x 20,0x20,0x1F,0x00},/*"o",6*/{0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x 18,0x06,0x01,0x00},/*"y",7*/{0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x 22,0x22,0x13,0x00},/*"e",8*/};/***********************延时子程序***********************/ void delay(unsigned int k){unsigned int i;unsigned int j;for(i=0;i<k;i++)for(j=0;j<20;j++);}/***********************写命令左***********************/ void write_cmd_1(unsigned char command){cs1=1;cs2=0;Di=0;RW=0;Lcd_Bus=command; //P0口delay(0);Enable=1;delay(0);Enable=0;}/***********************写命令右***********************/ void write_cmd_2(unsigned char command){cs1=0;cs2=1;Di=0;RW=0;Lcd_Bus=command;delay(0);Enable=1;delay(0);Enable=0;}/***********************写数据左***********************/ void write_data_1(unsigned char dis_data){cs1=1;cs2=0;Di=1;RW=0;Lcd_Bus=dis_data;delay(0);Enable=1;delay(0);Enable=0;}/***********************写数据右***********************/ void write_data_2(unsigned char dis_data){cs1=0;cs2=1;Di=1;RW=0;Lcd_Bus=dis_data;delay(0);Enable=1;delay(0);Enable=0;}/***********************清内存左***********************/ void clear_1(void){unsigned char j,k;cs1=1;cs2=0;write_cmd_1(Page_Add+0);write_cmd_1(Col_Add+0);for(k=0;k<8;k++){write_cmd_1(Page_Add+k);for(j=0;j<64;j++)write_data_1(0x00);}}/***********************清内存右***********************/ void clear_2(void){unsigned char j,k;cs1=0;cs2=1;write_cmd_2(Page_Add+0);write_cmd_2(Col_Add+0);for(k=0;k<8;k++){write_cmd_2(Page_Add+k);for(j=0;j<64;j++)write_data_2(0x00);}}/***********************显示汉字16*16左************************/void Chinese_disp_1(unsigned char pag,unsigned char col,unsigned char n){unsigned char i=0;unsigned char j=0;cs1=1;cs2=0;for(i=0;i<2;i++){write_cmd_1(Page_Add+pag+i);write_cmd_1(Col_Add+col);for(j=0;j<16;j++)write_data_1(Chinese_character[n][16*i+j]);}}/***********************显示汉字16*16右***********************/ void Chinese_disp_2(unsigned char pag,unsigned char col,unsigned char n){unsigned char i=0;unsigned char j=0;cs1=0;cs2=1;for(i=0;i<2;i++){write_cmd_2(Page_Add+pag+i);write_cmd_2(Col_Add+col);for(j=0;j<16;j++)write_data_2(Chinese_character[n][16*i+j]);}}/***********************显示英文16*8左************************/ void E_disp_1(unsigned char pag,unsigned char col,unsigned char n) {unsigned char i=0;unsigned char j=0;cs1=1;cs2=0;for(i=0;i<2;i++){write_cmd_1(Page_Add+pag+i);write_cmd_1(Col_Add+col);for(j=0;j<8;j++)write_data_1(E[n][8*i+j]);}}/***********************显示英文16*8右***********************/ void E_disp_2(unsigned char pag,unsigned char col,unsigned char n) {unsigned char i=0;unsigned char j=0;cs1=0;cs2=1;for(i=0;i<2;i++){write_cmd_2(Page_Add+pag+i);write_cmd_2(Col_Add+col);for(j=0;j<8;j++)write_data_2(E[n][8*i+j]);}}/***********************液晶屏初始化***********************/ void init_lcd(){Lcd_Rst=0;delay(100);Lcd_Rst=1;delay(100);write_cmd_1(Disp_Off); write_cmd_2(Disp_Off);write_cmd_1(Page_Add+0); write_cmd_2(Page_Add+0);write_cmd_1(Start_Line+0); write_cmd_2(Start_Line+0);write_cmd_1(Col_Add+0); write_cmd_2(Col_Add+0);write_cmd_1(Disp_On); write_cmd_2(Disp_On);}/***********************LCD显示子程序***********************/ void display(void){unsigned char i;for(i=Start_Line;i<0xff;i++){Chinese_disp_1(0,0, 0);Chinese_disp_1(0,16,1);Chinese_disp_1(0,32,2);Chinese_disp_1(0,48,3);Chinese_disp_2(0,0, 4);Chinese_disp_2(0,16,5);Chinese_disp_2(0,32,6);Chinese_disp_2(0,48,7);//西安建筑科技大学Chinese_disp_1(2,16,8);Chinese_disp_1(2,32,9);Chinese_disp_1(2,48,10);Chinese_disp_2(2,0,11);Chinese_disp_2(2,16,12);Chinese_disp_2(2,32,13);//冶金工程学院Chinese_disp_1(4,16,14);Chinese_disp_1(4,32,15);Chinese_disp_1(4,48,16);Chinese_disp_2(4,0,17);Chinese_disp_2(4,16,18);Chinese_disp_2(4,32,19);//材料加工工程E_disp_1(6,24,0);E_disp_1(6,32,1);E_disp_1(6,40,2);E_disp_1(6,48,3);E_disp_1(6,56,4);E_disp_2(6,0,5);E_disp_2(6,8,6);E_disp_2(6,16,7);E_disp_2(6,24,8);//Crasyboyewrite_cmd_1(i);write_cmd_2(i);delay(3000);//调整滚动速度}//delay(60000);}/***********主程序************/ void main(void){ init_lcd();clear_1();clear_2();while(1){display();}}希望以上资料对你有所帮助，附励志名言3条：1、宁可辛苦一阵子，不要苦一辈子。

LCD12864（不带字库）LCD12864（不带字库）其实看了本版的1602教程以后很容易就可以掌握12864了。

刚才看到有网友要12864教程，俺就把博客里以前练习的一个程序弄过来，算作参考吧。

不足之处请见谅。

这个程序浪费了我很多时间，因为我一直没有找到datasheet，12864的型号实在太多了。

为了这个程序，我在网上找了很多相关的例程，但大多都是C语言写的，可惜俺没学过C，用起来不顺手，遂将其转成汇编，但是转后，程序运行不正常，郁闷啊。

好不容易找个汇编的吧，又写得很乱，没有头绪，没有datasheet，看起来很费劲，最后终于找到一个相关的datasheet，这才完成这个程序。

总结一下：与其费力分析别人的程序，不如看datasheet自己写。

下面总结一下datasheet。

→↑←ONE→且看datasheet：12864点阵型LCD简介12864是一种图形点阵液晶显示器,它主要由行驱动器/列驱动器及128×64全点阵液晶显示器组成。

可完成图形显示，也可以显示8×4个(16×16点阵)汉字。

在使用12864LCD前先必须了解以下功能器件才能进行编程。

12864内部功能器件及相关功能如下：1. 指令寄存器(IR)IR是用于寄存指令码，与数据寄存器数据相对应。

当D/I=0时，在E信号下降沿的作用下，指令码写入IR。

2．数据寄存器(DR)DR是用于寄存数据的，与指令寄存器寄存指令相对应。

当D/I=1时，在下降沿作用下，图形显示数据写入DR，或在E信号高电平作用下由DR读到DB7∽DB0数据总线。

DR和DDRAM之间的数据传输是模块内部自动执行的。

3．忙标志：BFBF标志提供内部工作情况。

BF=1表示模块在内部操作，此时模块不接受外部指令和数据。

BF=0时，模块为准备状态，随时可接受外部指令和数据。

利用STATUS READ指令，可以将BF读到DB7总线，从检验模块之工作状态。

/************************************************************************** 在无字库的12864LCD上显示时、分、秒；没有用时钟芯片MCU：STC89C52晶振：11.0592MHz作者：罗元俊时间：2014.06.25**************************************************************************/ #include <reg52.h>typedef unsigned char uchar;typedef unsigned int uint;#define Port P0 // 数据端口#define Disp_On 0x3f // 开显示#define Disp_Off 0x3e // 关显示#define Col_Add 0x40 // 列地址#define Page_Add 0xb8 // 页地址#define Start_Line 0xc0 // 起始页sbit RS = P2^6;sbit RW = P2^5;sbit EN = P2^7;sbit CS1 = P3^2;sbit CS2 = P3^3;uint t = 0; //全局变量：秒表（用于计数时间的增量）uchar sec,min,hour; // 全局变量：秒、分、时uchar a,b,c,d,e,f; // 秒、分、时的个位和十位uchar code HZ_tab[][32] = {{/*-- 文字: 潜--*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/0x20,0xC2,0x0C,0x80,0x10,0x94,0x54,0x3F,0x54,0x90,0x54,0x3F,0x54,0x94,0x10,0x00,0x04,0x04,0x7E,0x01,0x00,0x00,0xFF,0x49,0x49,0x49,0x49,0x49,0xFF,0x00,0x01,0x00},{/*-- 文字: 龙--*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/0x10,0x10,0x10,0x10,0x10,0xFF,0x10,0x10,0xF0,0x10,0x11,0x16,0xD0,0x10,0x10,0x00,0x80,0x40,0x20,0x18,0x06,0x41,0x20,0x10,0x3F,0x44,0x42,0x41,0x40,0x40,0x78,0x00},{/*-- 文字: 花--*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/0x04,0x04,0x04,0x84,0x6F,0x04,0x04,0x04,0xE4,0x04,0x8F,0x44,0x24,0x04,0x04,0x00,0x04,0x02,0x01,0xFF,0x00,0x10,0x08,0x04,0x3F,0x41,0x40,0x40,0x40,0x40,0x78,0x00},{/*-- 文字: 园--*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/0x00,0xFE,0x02,0x42,0x4A,0xCA,0x4A,0x4A,0xCA,0x4A,0x4A,0x42,0x02,0xFE,0x00,0x00,0x00,0xFF,0x40,0x50,0x4C,0x43,0x40,0x40,0x4F,0x50,0x50,0x5C,0x40,0xFF,0x00,0x00},{/*-- 文字: 输--*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/0x88,0x68,0x1F,0xC8,0x08,0x10,0xC8,0x54,0x52,0xD1,0x12,0x94,0x08,0xD0,0x10,0x00,0x09,0x19,0x09,0xFF,0x05,0x00,0xFF,0x12,0x92,0xFF,0x00,0x5F,0x80,0x7F,0x00,0x00},{/*-- 文字: 入--*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/0x00,0x00,0x00,0x00,0x00,0x01,0xE2,0x1C,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x40,0x20,0x10,0x0C,0x03,0x00,0x00,0x00,0x03,0x0C,0x30,0x40,0x80,0x80,0x00},{/*-- 文字: 密--*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/0x10,0x8C,0x44,0x04,0xE4,0x04,0x95,0xA6,0x44,0x24,0x14,0x84,0x44,0x94,0x0C,0x00,0x02,0x02,0x7A,0x41,0x41,0x43,0x42,0x7E,0x42,0x42,0x42,0x43,0xF8,0x00,0x00,0x00},{/*-- 文字: 码--*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=16x16 --*/0x04,0x84,0xE4,0x5C,0x44,0xC4,0x00,0x02,0xF2,0x82,0x82,0x82,0xFE,0x80,0x80,0x00,0x02,0x01,0x7F,0x10,0x10,0x3F,0x00,0x08,0x08,0x08,0x08,0x48,0x88,0x40,0x3F,0x00}};uchar code SZ_tab[][16] = {{/*-- 文字: 0 --*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00}, //0 {/*-- 文字: 1 --*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00}, //1 {/*-- 文字: 2 --*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00}, //2 {/*-- 文字: 3 --*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00}, //3 {/*-- 文字: 4 --*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00}, //4{/*-- 文字: 5 --*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00}, //5 {/*-- 文字: 6 --*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00}, //6 {/*-- 文字: 7 --*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00}, //7 {/*-- 文字: 8 --*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00}, //8 {/*-- 文字: 9 --*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00}, //9 {/*-- 文字: - --*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01}, //10 {/*-- 文字: : --*//*-- 新宋体12; 此字体下对应的点阵为：宽x高=8x16 --*/0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00} //11 };void delayms(uint xms) //延时子程序{uint x,y;for(x = xms;x > 0;x--)for(y = 2;y > 0;y--);}void DetBusybit(void) //忙位检测子程序{Port = 0xff; //读状态值时，先给数据端口赋高电平RS = 0;RW = 1;EN = 1;while(Port & 0x80); //如果LCD处于忙状态，程序就此停止delayms(2);EN = 0;}void LCD_WrCom_L(uchar com) // 写左半屏指令子程序{DetBusybit();CS1 = 1; CS2 = 0;RS = 0;RW = 0;EN = 1;Port = com;delayms(5);EN = 0;}void LCD_WrCom_R(uchar com) // 写右半屏指令子程序{DetBusybit();CS1 = 0; CS2 = 1;RS = 0;RW = 0;EN = 1;Port = com;delayms(5);EN = 0;}void LCD_WrDat_L(uchar dat) // 写左半屏数据子程序{DetBusybit();CS1 = 1; CS2 = 0;RS = 1;RW = 0;EN = 1;Port = dat;delayms(5);EN = 0;}void LCD_WrDat_R(uchar dat) // 写右半屏数据子程序{DetBusybit();CS1 = 0; CS2 = 1;RS = 1;RW = 0;EN = 1;Port = dat;delayms(5);EN = 0;}void Clear_L(void) // 左半屏清屏{uchar i,j;CS1 = 1; CS2 = 0;LCD_WrCom_L(Page_Add + 0);LCD_WrCom_L(Col_Add + 0);for(j = 0; j < 8; j++)LCD_WrCom_L(Page_Add + j);for(i = 0; i < 64; i++)LCD_WrDat_L(0x00);}void Clear_R(void) // 右半屏清屏{uchar i,j;CS1 = 0; CS2 = 1;LCD_WrCom_R(Page_Add + 0);LCD_WrCom_R(Col_Add + 0);for(j = 0; j < 8; j++)LCD_WrCom_R(Page_Add + j);for(i = 0; i < 64; i++)LCD_WrDat_R(0x00);}void Disp_HZ_L(uchar pag,uchar col,uchar n) // 显示左半屏汉字16*16 {uchar i = 0,j = 0;CS1 = 1; CS2 = 0;for(i = 0; i < 2; i++){LCD_WrCom_L(Page_Add + pag + i);LCD_WrCom_L(Col_Add + col);for(j = 0; j < 16; j++)LCD_WrDat_L(HZ_tab[n][16*i+j]);}}void Disp_SZ_L(uchar pag,uchar col,uchar n) // 显示左半屏数字8*16 {uchar i = 0,j = 0,k = 0;CS1 = 1; CS2 = 0;for(i = 0; i < 2; i++){LCD_WrCom_L(Page_Add + pag + i);LCD_WrCom_L(Col_Add + col);for(j = 0; j < 8; j++){LCD_WrDat_L(SZ_tab[n][8*i+j]);}}}void Disp_HZ_R(uchar pag,uchar col,uchar n) // 显示右半屏汉字16*16 {uchar i = 0,j = 0;CS1 = 0; CS2 = 1;for(i = 0; i < 2; i++){LCD_WrCom_R(Page_Add + pag + i);LCD_WrCom_R(Col_Add + col);for(j = 0; j < 16; j++)LCD_WrDat_R(HZ_tab[n][16*i+j]);}}void Disp_SZ_R(uchar pag,uchar col,uchar n) // 显示右半屏数字8*16 {uchar i = 0,j = 0;CS1 = 0; CS2 = 1;for(i = 0; i < 2; i++){LCD_WrCom_R(Page_Add + pag + i);LCD_WrCom_R(Col_Add + col);for(j = 0; j < 8; j++){LCD_WrDat_R(SZ_tab[n][8*i+j]);}}}void TimerInit(void) //定时器初始化函数{TMOD = 0x02; //设置定时器0为工作模式2TH0 = 0x47; //装初值TL0 = 0x47; //设定时间为0.2msEA = 1;ET0 = 1;TR0 = 1; //启动定时器0}void LCD_Init(void) // LCD初始化子程序{delayms(10);LCD_WrCom_L(Disp_Off); LCD_WrCom_R(Disp_Off);LCD_WrCom_L(Page_Add + 0); LCD_WrCom_R(Page_Add + 0);LCD_WrCom_L(Start_Line + 0); LCD_WrCom_R(Start_Line + 0);LCD_WrCom_L(Col_Add + 0); LCD_WrCom_R(Col_Add + 0);LCD_WrCom_L(Disp_On); LCD_WrCom_R(Disp_On); }void main(void){LCD_Init();TimerInit();Clear_L();Clear_R();while(1){sec = t%60; //秒钟分离min = (t/60)%60; //分钟分离hour = (t/3600)%60; //时钟分离a = sec%10; //秒钟个位分离b = (sec/10)%10; //秒钟十位分离c = min%10; //分钟个位分离d = (min/10)%10; //分钟十位分离e = hour%10; //时钟个位分离f = (hour/10)%10; //时钟十位分?Disp_HZ_L(0,32,0); // 第0页，第16列，第0个字Disp_HZ_L(0,48,1);Disp_HZ_R(0,0,2);Disp_HZ_R(0,16,3);Disp_SZ_L(2,24,2);Disp_SZ_L(2,32,0);Disp_SZ_L(2,40,1);Disp_SZ_L(2,48,4);Disp_SZ_L(2,56,10);Disp_SZ_R(2,0,0);Disp_SZ_R(2,8,6);Disp_SZ_R(2,16,10);Disp_SZ_R(2,24,2);Disp_SZ_R(2,32,7);Disp_SZ_L(4,32,f);Disp_SZ_L(4,40,e);Disp_SZ_L(4,48,11);Disp_SZ_L(4,56,d);Disp_SZ_R(4,0,c);Disp_SZ_R(4,8,11);Disp_SZ_R(4,16,b);Disp_SZ_R(4,24,a);Disp_HZ_L(6,0,4);Disp_HZ_L(6,16,5);Disp_HZ_L(6,32,6);Disp_HZ_L(6,48,7);Disp_SZ_R(6,0,11);}}void timer0(void) interrupt 1{uint i;i++;if(i == 5000) //1s时间到{t++; //秒表计时开始i = 0;}}。