QC12864B液晶显示屏学习笔记_2

jinglixixi · 发表于 2016-1-17 21:42:20

为了尽快掌握QC12864B的使用方法，这里采用先在51单片机上实现QC12864B的显示功能以验证程序的可靠性，然后再将其移植到YL-KL26Z 开发板上看能否实现显示功能。

51单片机（5V）的并行模式

从并行模式的信号时序可知，在接好QC12864B的工作电源外，还要连接的引脚有RS、R/W、E及DB0~DB7。

在单片机最小系统的基础上，可按如下原理图来构建。其中RS与P1.0连接，R/W与P1.1连接，E与P1.2连接，DB0~DB7与P0.0~P0.7向连。调节RW1可改变QC12864B的显示亮度。

在LCD12864上以并行模式显示字符、汉字、图形的代码如下：

/***********************************************
标题： LCD12864程序
效果：基于51单片机STC89C52的LCD12864液晶屏
并行模式显示程序，显示内容为字符、汉字及图形
************************************************/
#include "reg51.h"
/********IO引脚定义********/
sbit LCD_RS=P1^0;
sbit LCD_RW=P1^1;
sbit LCD_E=P1^2;
sbit PSB =P1^6; // PSB=1，使用8位并行模式
/********宏定义********/
#define LCD_Data P0
#define Busy 0x80 // 用于检测LCD状态字中的Busy标识
/********函数声明********/
void WriteDataLCD(unsigned char WDLCD);
void WriteCommandLCD(unsigned char WCLCD,BuysC);
unsigned char ReadDataLCD(void);
unsigned char ReadStatusLCD(void);
void LCDInit(void);
void LCDClear(void);
void LCDFlash(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 DisplayImage (unsigned char code *DData);
void Delay5Ms(void);
void Delay400Ms(void);
/********数据定义********/
code unsigned char u1[] = {"5 1 单片机实验板"};
code unsigned char u2[] = {" www.5i51.com "};
code unsigned char u3[] = {"自学单片机的首选"};
code unsigned char u4[] = {" QQ: 12345678 "};
code unsigned char tmp[]={//128*64点阵图形海豚戏水数据
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,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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,
0x00,0x7F,0x00,0x00,0x00,0x03,0xFE,0x00,0x00,0x00,0x00,0x02,0x00,0x76,0x00,0x00,
0x00,0xC3,0xFF,0x00,0x00,0x3F,0xE7,0xE0,0x00,0x00,0x00,0x03,0x00,0xFF,0x80,0x00,
0x00,0x81,0xFF,0xFE,0x00,0x7C,0x03,0xF0,0x00,0x00,0x00,0x01,0xF7,0xCB,0xF8,0x00,
0x01,0x83,0xF8,0x7B,0x00,0x40,0x00,0x30,0x00,0x00,0x00,0x00,0x3F,0xC0,0xF8,0x00,
0x03,0x1E,0x3C,0x01,0x80,0x60,0x00,0x30,0x00,0x00,0x00,0x00,0x01,0x40,0x18,0x00,
0x03,0x30,0x0C,0x01,0xE0,0x6C,0x00,0x70,0x00,0x00,0x00,0x00,0x01,0x7C,0xCC,0x00,
0x03,0x24,0x6F,0x31,0x20,0x7C,0x40,0x60,0x00,0x00,0x00,0x00,0x01,0x97,0xFC,0x00,
0x01,0xBF,0xFB,0xF3,0xE0,0x3F,0xE7,0xC0,0x00,0x00,0x00,0x00,0x01,0xFB,0x1C,0x00,
0x00,0x9B,0xC2,0x1F,0x00,0x00,0x7F,0x80,0x00,0x00,0x00,0x00,0x00,0x0C,0xFE,0x00,
0x00,0xCC,0x36,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0xB8,0x00,
0x00,0x7E,0x7E,0x00,0x00,0x00,0x00,0x00,0x1F,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x07,0xE0,0x00,0x00,0x00,0x00,0x00,0x3F,0xFF,0xFF,0x80,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x38,0x00,0xE0,0x03,0xFF,0xE0,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x1F,0x00,0x00,0x78,0x01,0xC0,0x00,0x00,0x70,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x20,0x80,0x00,0xF8,0x01,0x80,0x00,0x00,0x30,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x2E,0x80,0x00,0xD8,0x03,0x60,0x00,0x01,0xF8,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x2A,0x80,0x00,0x98,0x02,0x60,0x00,0x00,0xC0,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x2E,0x80,0x01,0x98,0x03,0xE0,0xC0,0x00,0x60,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x20,0x83,0xFF,0x8C,0x07,0xE1,0xC8,0x00,0x30,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x1F,0x7F,0x07,0x8C,0x0F,0xFF,0x8C,0x00,0x18,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0xB8,0x0F,0xCC,0x1F,0x83,0x8F,0x00,0x18,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x39,0xC0,0x38,0xFE,0x1E,0x00,0x8F,0xC0,0x0C,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x3B,0x80,0x70,0x1E,0x00,0x00,0xCC,0xF0,0x0C,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x76,0x00,0xC0,0x00,0x00,0x00,0x6E,0x3C,0x06,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x7E,0x01,0x80,0x00,0x00,0x00,0x3F,0x0E,0x06,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0xDC,0x03,0x00,0x00,0x00,0x00,0x1F,0x03,0x82,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0xD8,0x06,0x00,0x00,0x00,0x00,0x00,0x01,0xC2,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0xC0,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0xC2,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x80,0x0C,0x00,0x00,0x00,0x00,0x00,0x00,0x62,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0xC0,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x66,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0xC0,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x26,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x80,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x6C,0x00,0x00,0x00,0x00,
0xFF,0xFF,0xFF,0x80,0x3F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xEF,0xFF,0xFF,0xFE,0x00,
0x00,0x00,0x01,0x80,0x30,0x00,0x00,0x00,0x00,0x00,0x3F,0xD8,0x00,0x00,0x00,0x00,
0x3E,0x00,0x01,0x80,0x60,0x00,0x00,0x00,0x07,0xE0,0x3D,0xF0,0x01,0xF0,0x0C,0x00,
0xFF,0x80,0x01,0x80,0x6C,0x00,0x00,0x00,0x3E,0xF0,0x2C,0x60,0x07,0xFF,0xFC,0x00,
0x81,0xF8,0x71,0x01,0xDC,0x03,0xFC,0x00,0xF3,0xFF,0x87,0xE0,0x06,0x07,0xE0,0x00,
0x00,0x3F,0xE1,0x03,0xFC,0x0F,0x1F,0x87,0xC2,0x00,0x04,0xE0,0x00,0x00,0x00,0x00,
0x00,0x00,0x03,0x00,0x0C,0x1C,0x03,0xFF,0x00,0x00,0x01,0xE0,0x7F,0x03,0xF0,0x00,
0x00,0x00,0x03,0x00,0x18,0x10,0x00,0x00,0x00,0x00,0x01,0xC1,0xF3,0xF7,0x3C,0x00,
0xFF,0xC0,0x0F,0x02,0x38,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0x80,0x7E,0x0E,0x00,
0xE1,0xFF,0xFF,0x03,0xF0,0x00,0x00,0x00,0x00,0x03,0xF8,0x7C,0x00,0x00,0x02,0x00,
0x00,0x01,0xE3,0x03,0xC0,0x00,0x03,0xFF,0x00,0x0F,0x1F,0xE0,0x00,0x00,0x00,0x00,
0x00,0x00,0x03,0x01,0x00,0x00,0x0F,0x03,0xF0,0x3C,0x00,0x00,0x00,0x00,0x00,0x00,
0x03,0xFC,0x03,0x01,0x0F,0x00,0x0C,0x00,0x7F,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,
0x0F,0x0F,0x8D,0x01,0x3F,0xE0,0x00,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x1C,0x01,0xFD,0x81,0x30,0x7C,0x03,0xC0,0xFE,0x00,0x00,0x00,0x04,0x00,0x00,0x00,
0x18,0x00,0x01,0xBF,0x00,0x0F,0xFF,0x07,0xC7,0xE0,0x00,0x00,0x1C,0x00,0x00,0x00,
0x00,0x00,0x00,0xFF,0x80,0x01,0xF8,0x3E,0x00,0x78,0x0F,0xF0,0x78,0x00,0x00,0x00,
0x00,0x0F,0x00,0x7F,0x83,0x80,0x3F,0xF1,0xF8,0x1E,0x1C,0x7F,0xE0,0x07,0xE0,0x00,
0x00,0x1F,0xE0,0x3F,0xDF,0xFE,0x00,0x07,0x9F,0x83,0xF0,0x00,0x00,0x1C,0x7C,0x00,
0x00,0x78,0x70,0x1F,0xD0,0x07,0xC0,0x3C,0x01,0xF8,0x03,0xC0,0x00,0x18,0x00,0x00,
0xFF,0xE0,0x1F,0x73,0xE0,0x00,0xFF,0xE0,0x00,0x1F,0xFF,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x07,0xE1,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x0F,0x80,0x00,0xE1,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x7F,0xE0,0x00,0x07,0x9E,0x00,0x7F,0xC0,0x60,0x0F,0xC0,0x0F,0x00,0x00,0x00,
0x00,0xE0,0x7C,0x00,0x03,0xF7,0xC7,0xE0,0xFF,0xE0,0x3F,0xFF,0xFC,0x00,0x00,0x00,
0x01,0xC0,0x0F,0x00,0x03,0xBD,0xFE,0xFC,0x00,0x00,0xF0,0x1F,0xF0,0x00,0xC6,0x00
};
/***********主函数开始***********/
void main(void)
{ Delay400Ms(); // 启动等待，等LCD讲入工作状态
LCDInit(); // LCD初始化
while(1){
LCDClear();
DisplayImage(tmp); //显示图形
Delay400Ms();
Delay400Ms();
Delay400Ms();
Delay400Ms();
Delay400Ms();
Delay400Ms();
Delay400Ms();
Delay400Ms();
LCDClear();
DisplayListChar(0,1,u1); //显示字库中的中文与数字
DisplayListChar(0,2,u2); //显示字库中的字符与数字
DisplayListChar(0,3,u3); //显示字库中的中文
DisplayListChar(0,4,u4); //显示字库中的字符与数字
Delay400Ms();
Delay400Ms();
Delay400Ms();
Delay400Ms();
LCDFlash(); //闪烁效果
}
}
/***********写数据***********/
void WriteDataLCD(unsigned char WDLCD)
{ ReadStatusLCD(); //检测忙
LCD_RS = 1;
LCD_RW = 0;
LCD_Data = WDLCD;
LCD_E = 1;
LCD_E = 1;
LCD_E = 1;
LCD_E = 0;
}
/***********写指令************/
void WriteCommandLCD(unsigned char WCLCD,BuysC) //BuysC为0时忽略忙检测
{ if (BuysC) ReadStatusLCD(); //根据需要检测忙
LCD_RS = 0;
LCD_RW = 0;
LCD_Data = WCLCD;
LCD_E = 1;
LCD_E = 1;
LCD_E = 1;
LCD_E = 0;
}
/***********读数据***********/
unsigned char ReadDataLCD(void)
{ unsigned char LCDDA;
LCD_RS = 1;
LCD_RW = 1;
LCD_E = 1;
LCD_E = 1;
LCDDA=LCD_Data;
LCD_E = 0;
return(LCDDA);
}
/***********读状态***********/
unsigned char ReadStatusLCD(void)
{ LCD_Data = 0xFF;
LCD_RS = 0;
LCD_RW = 1;
LCD_E = 1;
LCD_E = 1;
while (LCD_Data & Busy); //检测忙信号
LCD_E = 0;
return(1);
}
/***********初始化**********/
void LCDInit(void)
{ WriteCommandLCD(0x30,1); //显示模式设置,开始要求每次检测忙信号
WriteCommandLCD(0x01,1); //显示清屏
WriteCommandLCD(0x06,1); // 显示光标移动设置
WriteCommandLCD(0x0C,1); // 显示开及光标设置
}
/***********清屏************/
void LCDClear(void)
{ WriteCommandLCD(0x01,1); //显示清屏
WriteCommandLCD(0x34,1); // 显示光标移动设置
WriteCommandLCD(0x30,1); // 显示开及光标设置
}
/***********闪烁效果***********/
void LCDFlash(void)
{ WriteCommandLCD(0x08,1); //显示清屏
Delay400Ms();
WriteCommandLCD(0x0c,1); // 显示开及光标设置
Delay400Ms();
WriteCommandLCD(0x08,1); //显示清屏
Delay400Ms();
WriteCommandLCD(0x0c,1); // 显示开及光标设置
Delay400Ms();
WriteCommandLCD(0x08,1); //显示清屏
Delay400Ms();
}
/***********按指定位置显示一个字符************/
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
{ if(Y<1)
Y=1;
if(Y>4)
Y=4;
X &= 0x0F; // 限制X不能大于16，Y不能大于1
switch(Y){
case 1:X|=0X80;break;
case 2:X|=0X90;break;
case 3:X|=0X88;break;
case 4:X|=0X98;break;
}
WriteCommandLCD(X, 0); // 这里不检测忙信号，发送地址码
WriteDataLCD(DData);
}
/***********按指定位置显示一串字符**************/
void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)
{ unsigned char ListLength,X2;
ListLength = 0;
X2=X;
if(Y<1)
Y=1;
if(Y>4)
Y=4;
X &= 0x0F; // 限制X不能大于16，Y在1-4之内
switch(Y){
case 1:X2|=0X80;break; // 根据行数来选择相应地址
case 2:X2|=0X90;break;
case 3:X2|=0X88;break;
case 4:X2|=0X98;break;
}
WriteCommandLCD(X2, 1); // 发送地址码
while (DData[ListLength]>=0x20){ // 若到达字串尾则退出
if (X <= 0x0F){ // X坐标应小于0xF
WriteDataLCD(DData[ListLength]);
ListLength++;
X++;
Delay5Ms();
}
}
}
/********输出128*64图形数据************/
void DisplayImage (unsigned char code *DData){
unsigned char x,y,i;
unsigned int tmp=0;
for(i=0;i<9;)
{
for(x=0;x<32;x++)
{ // 32行
WriteCommandLCD(0x34,1);
WriteCommandLCD((0x80+x),1); // 列地址
WriteCommandLCD((0x80+i),1); // 行地址，下半屏，即第三行地址0X88
WriteCommandLCD(0x30,1);
for(y=0;y<16;y++)
WriteDataLCD(DData[tmp+y]); // 读取数据写入LCD
tmp+=16;
}
i+=8;
}
WriteCommandLCD(0x36,1); // 扩充功能设定
WriteCommandLCD(0x30,1);
}
/***********短延时**************/
void Delay5Ms(void)
{ unsigned int TempCyc = 5552;
while(TempCyc--);
}
/***********长延时**************/
void Delay400Ms(void)
{ unsigned char TempCycA = 5;
unsigned int TempCycB;
while(TempCycA--){
TempCycB=7269;
while(TempCycB--);
}
}