前两天写了一个ST7920控制12864显示的串口程序，今天瞎逛的时候发现了这个超强悍的并口程序，转载一下。来源：CnChina
做了比较详细的注释，看不懂的可以问我。下面的图片中12864所显示的logo就是我用这个程序得到的。
附程序：
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/****************************************************************************** Copyright 2007 All rights reserved. 文件名 ： .c 模块名称：st7920 并行方式驱动12864液晶驱动 功能概要：st7920显示驱动 取代版本：0.0.1 修改人 ：pulan 完成日期：2007.07.08 升级说明：create CPU: stc89c58 主频：11.0592M 液晶型号：128*64 生产厂家： 驱动芯片：st7920 ******************************************************************************/ #include <reg52.h> #define uint unsigned int #define uchar unsigned char #define x1 0x80 //1000 0000 #define x2 0x88 //1000 1000 #define y 0x80 //1000 0000 #define comm 0 //定义传送指令代码为0 #define dat 1 //定义传送数据代码为1 sbit RS = P2^0; //H=数据; L=指令; sbit RW = P2^1; //H=读操作; L=写操作; sbit E = P2^3; //使能端 sbit PSB= P2^4; //H=并口; L=串口; sbit RST= P2^2; //复位信号 低电平有效 sbit busy=P0^7; //LCD忙信号 void wr_lcd (uchar dat_comm,uchar content); void chk_busy (void); void delay (uint us); uchar code tab1[]={ "本系列中文模块内" "任意位置反白显示" "置二级字库，可在" "使用更方便更灵活" }; uchar code tab31[]={ "金鹏科技有限公司" "Golden Palm TECH" }; uchar code tab32[]={ /*-- 调入了一幅图像：F:梁画图HOCO12832.bmp --*/ /*-- 宽度x高度=128x32 --*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x1E,0x00,0x00,0x00,0x00,0x00,0x07,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x7F,0x80,0x00,0x00,0x00,0x00,0x18,0x0C,0x00,0x00,0x01,0x00,0x00,0x00,0x00, 0x01,0xFF,0x80,0x00,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x13,0x10,0x03,0xFE,0x00, 0x03,0xFF,0xC0,0x00,0x00,0x00,0x00,0x58,0x00,0x00,0x00,0x3F,0x30,0x1F,0xFF,0xC0, 0x03,0xFF,0xE0,0x00,0x00,0x00,0x00,0x8C,0x03,0xF0,0x00,0x7F,0xE0,0x7C,0x01,0xE0, 0x03,0xFF,0xF0,0x00,0x00,0x00,0x01,0x36,0x06,0xC0,0x00,0x5F,0xC0,0xFF,0xFC,0x60, 0x01,0xFF,0xF0,0x00,0x00,0x00,0x02,0x1B,0x0F,0x80,0x00,0xFF,0x01,0xFE,0x0F,0x30, 0x00,0xEF,0xF0,0x00,0x00,0x00,0x02,0x6D,0x9F,0x00,0x00,0x3E,0x03,0xFF,0xF1,0x90, 0x00,0xFF,0xF8,0x00,0x00,0x00,0x04,0x36,0xFE,0x00,0x01,0xFF,0x07,0xFF,0xFC,0x90, 0x00,0xEF,0xFF,0xFF,0x80,0x00,0x04,0xDB,0x7E,0x00,0x03,0xFF,0x87,0xFF,0xFC,0xD0, 0x00,0x0F,0xFF,0xFF,0xC0,0x00,0x04,0x6D,0xFC,0x00,0x07,0xFF,0x8F,0xFF,0xFE,0x50, 0x00,0x0F,0xFF,0xFF,0xE0,0x00,0x04,0x36,0xFC,0x10,0x07,0xFF,0x8F,0xFF,0xFE,0x90, 0x00,0x0F,0xFF,0xFF,0xE0,0x00,0x04,0x1B,0xF8,0x10,0x07,0xFF,0xCF,0xFF,0xFE,0x80, 0x00,0x0F,0xFF,0xFF,0xF0,0x00,0x04,0x0F,0xF8,0x10,0x07,0xFF,0xFF,0xFF,0xFA,0x00, 0x00,0x07,0xFF,0xFF,0xF0,0x00,0x04,0x07,0xF0,0x10,0x07,0xFF,0xFF,0xFF,0xFA,0x00, 0x00,0xFF,0xFF,0xFF,0xF8,0x00,0x02,0x03,0xF0,0x20,0x07,0xFF,0xFF,0xFF,0xBA,0x00, 0x00,0xFD,0xFF,0xFF,0xFC,0x00,0x02,0x03,0xF0,0x20,0x03,0xFF,0xFF,0xDF,0xB8,0x00, 0x00,0xC1,0xC0,0x3F,0xFC,0x00,0x01,0x01,0xE0,0x40,0x00,0xFF,0xFF,0xDF,0xB0,0x00, 0x00,0x81,0xC0,0x3F,0xCE,0x00,0x00,0x81,0xE0,0x80,0x00,0x7F,0xFF,0xDF,0xA0,0x00, 0x00,0x81,0x80,0x1D,0xCF,0x00,0x00,0x41,0xE1,0x00,0x00,0x3F,0xFF,0x9B,0x00,0x00, 0x01,0x83,0x80,0x1F,0xC7,0x80,0x00,0x21,0xE2,0x00,0x00,0x1F,0xFD,0xB6,0x00,0x00, 0x01,0xC3,0x00,0x0E,0xE6,0x80,0x00,0x19,0xEC,0x00,0x00,0x07,0xFE,0x20,0x00,0x00, 0x00,0xC3,0x00,0x07,0x67,0x40,0x00,0x07,0xF0,0x00,0x00,0x03,0x3E,0x00,0x00,0x00, 0x00,0x02,0x00,0x03,0xE7,0xA0,0x00,0x00,0x00,0x00,0x00,0x02,0x8E,0x00,0x00,0x00, 0x00,0x06,0x00,0x03,0x83,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x03,0x00,0x00,0x00, 0x00,0x06,0x00,0x07,0x03,0x00,0x77,0x46,0x74,0x24,0x80,0x06,0x04,0x00,0x00,0x00, 0x00,0x1C,0x00,0x06,0x00,0x00,0x55,0x45,0x54,0x57,0x80,0x00,0x00,0x00,0x00,0x00, 0x00,0x1C,0x00,0x0E,0x00,0x00,0x45,0x45,0x74,0x57,0x80,0x08,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x1C,0x00,0x00,0x55,0x45,0x44,0x74,0x80,0xF0,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x38,0x00,0x00,0x77,0x76,0x47,0x54,0x80,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }; uchar code tab5[]={ /*-- 调入了一幅图像：F:梁画图COCK.bmp --*/ /*-- 宽度x高度=128x64 --*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 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0x00,0x00,0x00,0x00,0x00,0x60,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0xC0,0x03,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x01,0x40,0x04,0xD8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x01,0x00,0x01,0x08,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x02,0x0C,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x02,0x40,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x0C,0x48,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x38,0x41,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x0F,0xE2,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }; /****************************************************************************************** * 函数名称 ：init_lcd * 功能描述 ：初始化LCD ******************************************************************************************/ void init_lcd (void) { RST = 1; PSB = 1; wr_lcd(comm,0x30); //0011 0000 扩充功能设定——8位数据 基本指令操作 wr_lcd(comm,0x01); //0000 0001 清屏——将DDRAM填满"20H",并且设定DDRAM的地址计数器为"00H" wr_lcd(comm,0x06); //0000 0110 进入点设定——指定在数据的读取与写入时,设定游标的移动方向 wr_lcd(comm,0x0c); //0000 1100 游标或显示移位控制——开显示，关游标 } /****************************************************************************************** * 函数名称 ：chn_disp * 功能描述 ：显示汉字或字符 ******************************************************************************************/ void chn_disp(uchar code *chn) { uchar i,j; //i为横坐标,j为纵坐标 wr_lcd(comm,0x30); //0011 0000 扩充功能设定——8位数据 基本指令操作 wr_lcd(comm,0x80); //1000 0000 设定DDRAM地址——0000000 for(j=0;j<4;j++) //写四行数据 { for(i=0;i<16;i++) wr_lcd(dat,chn[j*16+i]); } } /****************************************************************************************** * 函数名称 ：chn_disp1 * 功能描述 ： 上半屏显示汉字或字符 ******************************************************************************************/ void chn_disp1(uchar code *chn) { uchar i,j; wr_lcd(comm,0x30); //0011 0000 扩充功能设定——8位数据 基本指令操作 wr_lcd(comm,0x80); //1000 0000 设定第一行的DDRAM地址——0x80 j=0; //第一行 for(i=0;i<16;i++) wr_lcd(dat,chn[j*16+i]); wr_lcd(comm,0x90); //1001 0000 设定第二行的DDRAM地址——0x90 j=1; //第二行 for(i=0;i<16;i++) wr_lcd(dat,chn[j*16+i]); } /****************************************************************************************** * 函数名称 ：img_disp * 功能描述 ：显示图形 ******************************************************************************************/ void img_disp(uchar code *img) { uchar i,j; for(j=0;j<32;j++) //绘制上半屏 { for(i=0;i<8;i++) { wr_lcd(comm,0x34); //0011 0100 扩充功能设定——8位数据 扩充指令操作 绘图开 wr_lcd(comm,y+j); //1xxx xxxx 设定绘图RAM——先设定垂直(列)地址AC6 AC5…AC0 wr_lcd(comm,x1+i); //1000 0xxx 设定绘图RAM——再设定水平(行)地址AC3AC2AC1AC0 wr_lcd(comm,0x30); //0011 0000 扩充功能设定——8位数据 基本指令操作 wr_lcd(dat,img[j*16+i*2]); wr_lcd(dat,img[j*16+i*2+1]); } } for(j=32;j<64;j++) //绘制下半屏 { for(i=0;i<8;i++) { wr_lcd(comm,0x34); //0011 0100 扩充功能设定——8位数据 扩充指令操作 绘图开 wr_lcd(comm,y+j-32); //1xxx xxxx 设定绘图RAM——先设定垂直(列)地址AC6 AC5…AC0 wr_lcd(comm,x2+i); //1000 1xxx 设定绘图RAM——再设定水平(行)地址AC3AC2AC1AC0 wr_lcd(comm,0x30); //0011 0000 扩充功能设定——8位数据 基本指令操作 wr_lcd(dat,img[j*16+i*2]); wr_lcd(dat,img[j*16+i*2+1]); } } wr_lcd (comm,0x36); //0011 0110 扩充功能设定——8位数据 扩充指令操作 绘图关 } /****************************************************************************************** * 函数名称 ：img_disp1 * 功能描述 ：下半屏显示图形 ******************************************************************************************/ void img_disp1(uchar code *img) { uchar i,j; for(j=0;j<32;j++) { for(i=0;i<8;i++) { wr_lcd(comm,0x34); wr_lcd(comm,y+j); wr_lcd(comm,x2+i); wr_lcd(comm,0x30); wr_lcd(dat,img[j*16+i*2]); wr_lcd(dat,img[j*16+i*2+1]); } } wr_lcd(comm,0x36); } /****************************************************************************************** * 函数名称 ：lat_disp * 功能描述 ：显示点阵 ******************************************************************************************/ void lat_disp(uchar data1,uchar data2) { uchar i,j,k,x; x=x1; //1000 0000 for(k=0;k<2;k++) //第一次循环x=1000 0000 第二次循环x=1000 1000 { for(j=0;j<16;j++) { for(i=0;i<8;i++) { wr_lcd(comm,0x34); //0011 0100 扩充功能设定——8位数据 扩充指令操作 绘图开 wr_lcd(comm,y+j*2); wr_lcd(comm,x+i); wr_lcd(comm,0x30); wr_lcd(dat,data1); wr_lcd(dat,data1); } for(i=0;i<8;i++) { wr_lcd(comm,0x34); wr_lcd(comm,y+j*2+1); wr_lcd(comm,x+i); wr_lcd(comm,0x30); wr_lcd(dat,data2); wr_lcd(dat,data2); } } x=x2; } wr_lcd(comm,0x36); } /****************************************************************************************** * 函数名称 ：con_disp * 功能描述 ：当data1=0xff,data2=0xff时,在x0,y0处反白显示16xl*yl ******************************************************************************************/ void con_disp(uchar data1,uchar data2,uchar x0,uchar y0,uchar xl,uchar yl) { uchar i,j; for(j=0;j<yl;j++) { for(i=0;i<xl;i++) { wr_lcd(comm,0x34); wr_lcd(comm,y0+j); wr_lcd(comm,x0+i); wr_lcd(comm,0x30); wr_lcd(dat,data1); wr_lcd(dat,data2); } } wr_lcd(comm,0x36); } /****************************************************************************************** * 函数名称 ：clrram * 功能描述 ：将DDRAM填满"20H",并且设定DDRAM的地址计数器(AC)到"00H" ******************************************************************************************/ void clrram(void) { wr_lcd(comm,0x30); wr_lcd(comm,0x01); } /****************************************************************************************** * 函数名称 ：wr_lcd * 功能描述 ：当dat_comm=0时,写入指令,dat_comm=1时,写入数据 ******************************************************************************************/ void wr_lcd(uchar dat_comm,uchar content) { chk_busy (); if(dat_comm) { RS = 1; //数据 RW = 0; //写 } else { RS = 0; //指令 RW = 0; //写 } P0=content; //输出数据或指令 E = 1; E = 0; } /****************************************************************************************** * 函数名称 ：chk_busy * 功能描述 ：检测LCD忙信号 ******************************************************************************************/ void chk_busy(void) { P0 = 0xff; RS = 0; RW = 1; E = 1; while(busy==1); E = 0; } /****************************************************************************************** * 函数名称 ：delay * 功能描述 ：延时函数 ******************************************************************************************/ void delay(uint us) //delay time { while(us--); } /****************************************************************************************** * 函数名称 ：delay1 * 功能描述 ：延时函数 1ms ******************************************************************************************/ void delay1(uint ms) { uint i,j; for(i=0;i<ms;i++) for(j=0;j<15;j++) delay(1); } /****************************************************************************************** * 函数名称 ：main * 功能描述 ：主函数 ******************************************************************************************/ void main() { SP=0x5f; init_lcd(); while(1) { lat_disp(0x00,0x00); //显示点阵 chn_disp(tab1); //整屏显示汉字或字符 con_disp(0xff,0xff,0x8c,0x80,2,16);//反白 delay1(8000); clrram(); //清屏 lat_disp(0xcc,0xcc); //显示点阵 delay1(8000); lat_disp(0x00,0x00); //显示点阵 chn_disp1(tab31); //上半屏显示字符 img_disp1(tab32); //下半屏显示图像 delay1 (8000); clrram(); lat_disp (0xff,0x00); //显示点阵 delay1(8000); img_disp(tab5); //整屏显示图像 delay1(8000); } } |
附字模软件：
.。。看到汇编
.-= 小鬼的日志 ..童年的记忆-多啦A梦大结局 =-.
路过打酱油~~~~ :zzz
.-= Lxhome的日志 ..Windows7的一些资源及应用（继续跟新中） =-.
你好，我最近在做一个ST7920的驱动，用的是C8051F020，不知道移植代码时候有什么需要注意的么。一直不成功。