DSP-液晶显示屏(LCD)实验.doc

班 级 学号 姓 名 同组人 实验日期 室温 大气压 成 绩 实验四 液晶显示屏（LCD）实验一、实验目的 1、掌握液晶的使用方法；2、掌握液晶信号之间时序的正确识别和引入。二、实验设备1、一台装有CCS2000软件的计算机；2、插上2812主控板的DSP实验箱；3、DSP硬件仿真器。三、实验原理本实验箱采用的液晶接口在DSP的数据总线上，由于DSP是十六位总线，液晶是八位总线，所以DSP的高八位悬空。液晶的结构框图如下：四、实验步骤1、把2812模块小板插到大板上，打开液晶模块的电源开关；2、在CCS2000环境中打开本实验的工程编译Example_lcd.pjt，成输出文件，通过仿真器把执行代码下载到DSP芯片；3、运行程序，液晶上会循环显示预定内容；4、参考源代码，自行修改程序，实现不同的显示模式。五、实验结果实验现象如下图所示：六、实验总结通过本次CCS环境下LCD12864液晶模块显示的仿真实验，让我了解并熟悉了CCS软件的安装和调试方法，DSP实验箱下载调试的步骤以及CCS环境下的DSP的C语言程序编写方法，对于12864液晶模块控制程序的编写也有了更深的认识，对今后DSP的进一步学习奠定了应用基础。附页：实验原程序代码#include include/DSP281x_Device.h / DSP281x Headerfile Include File#include include/DSP281x_Examples.h / DSP281x Examples Include File#include ASCII.h/ - 汉字字模的数据结构定义 - /typedef struct typFNT_GB16 / 汉字字模数据结构 signed char Index2; / 汉字内码索引 char Msk32; / 点阵码数据aa;/ 汉字字模表 / 汉字库: 宋体16.dot 纵向取模上高位,数据排列:从左到右从上到下 /struct typFNT_GB16 GB_16 = / 数据表/*- 文字: 欢 -*/*- Fixedsys12; 此字体下对应的点阵为：宽x高=16x16 -*/0x00,0x80,0x00,0x80,0xFC,0x80,0x05,0xFE,0x85,0x04,0x4A,0x48,0x28,0x40,0x10,0x40,0x18,0x40,0x18,0x60,0x24,0xA0,0x24,0x90,0x41,0x18,0x86,0x0E,0x38,0x04,0x00,0x00/*- 文字: 迎 -*/*- Fixedsys12; 此字体下对应的点阵为：宽x高=16x16 -*/0x40,0x00,0x21,0x80,0x36,0x7C,0x24,0x44,0x04,0x44,0x04,0x44,0xE4,0x44,0x24,0x44,0x25,0x44,0x26,0x54,0x24,0x48,0x20,0x40,0x20,0x40,0x50,0x00,0x8F,0xFE,0x00,0x00/*- 文字: 使 -*/*- Fixedsys12; 此字体下对应的点阵为：宽x高=16x16 -*/0x08,0x40,0x0C,0x40,0x1B,0xFE,0x10,0x40,0x37,0xFC,0x64,0x44,0xA4,0x44,0x27,0xFC,0x24,0x44,0x22,0x40,0x21,0x80,0x20,0x80,0x21,0x70,0x22,0x1E,0x2C,0x04,0x00,0x00/*- 文字: 用 -*/*- Fixedsys12; 此字体下对应的点阵为：宽x高=16x16 -*/0x00,0x00,0x1F,0xFC,0x10,0x84,0x10,0x84,0x10,0x84,0x1F,0xFC,0x10,0x84,0x10,0x84,0x10,0x84,0x1F,0xFC,0x10,0x84,0x10,0x84,0x20,0x84,0x20,0x84,0x40,0x94,0x80,0x88;/ Prototype statements for functions found within this file./*/延时N毫秒/*/void delay(int time) int i,j;for(i=0;itime;i+) for(j=0;j1200;j+);/*/写命令/*/void wcom(unsigned char com) Reg08=com;/*/写数据/*/void wdata(unsigned char dat)Reg07=dat;/*/初始化LCD/*/void lcdinit(void)wcom(0xa4);wcom(0xad);wcom(0x03);wcom(0xac);wcom(0xe2); /initialize interal functiondelay(10); wcom(0xa2); /set nomal display wcom(0xa0); /ADC select SEG1 to SEG132wcom(0xc8); /set SHL COM1 to COM64 start page setup wcom(0x2c); /power control(VB,VR,VF=1,1,1) wcom(0x2e); /power control(VB,VR,VF=1,1,1) wcom(0x2f); /power control(VB,VR,VF=1,1,1) wcom(0x25); / wcom(0x81); /set reference voltage mode wcom(0x20); /set reference voltage wcom(0x40); /Initial Display Line was first line wcom(0xa6); /set nomal display wcom(0xa4); /set nomal display wcom(0xaf); /display on/*/清屏/*/void clear(void)unsigned char page;unsigned char seg; for(page=0xb0;page0xb9;page+) /写页地址共8页 0xb0-0xb8 wcom(page); wcom(0x10); wcom(0x00); for(seg=0;seg128;seg+) wdata(0x00); /*/写显示字符/*/void lcdwritechar(char codenum ,char y ,char x ) unsigned char seg; unsigned int coden; codenum-=0x20; coden=codenum1)&0x0f); wcom(0x00|(x3)&0x0f); for(seg=0;seg1)&0x0f); wcom(0x00|(x3)&0x0f); for(seg=0;seg1)&0x0f);wcom(0x00|(x3)&0x0f);for(seg=0;seg1)&0x0f);wcom(0x00|(x3)&0x0f);for(seg=0;seg16;seg+)wdata(GB_16hz.Mskcoden+);main() short i; InitSysCtrl(); EALLOW; EDIS; DINT; InitPieCtrl(); IER = 0x0000; IFR = 0x0000; InitPieVectTable(); InitXintf(); / For this example, init the Xintf lcdinit(); clear(); while(1) /lcdinit(); lcdwritehz(0,1,4); lcdwritehz(1,1,6);lcdwritehz(2,1,8);lcdwritehz(3,1,10);lcdwritechar(D,4,3);lcdwritechar(S,4,4);lcdwritechar(P,4