51单片机实现12864图形点阵显示C语言与汇编程序及资料

ID:417080 · 发表于 2019-6-12 10:59

            DATA  VISION 的12864图形点阵LCD屏
简介: STN,有LED背光,无控制芯片,驱动芯片为M5299/M5298,4位数据接口,无内部负压
/****************************************************************************************/
重要接口解析
CLP       CP 数据的移位时钟
LIP       LD 数据锁存信号，每移位一行数据锁存一次，高电平时间不能小于1.46uS
FRMB       DF 交替信号(LCD驱动所需的交替信号)
FRP       FLM 帧信号
/****************************************************************************************/

LCD接口
1. LED+
2. LED-
3. VCC
4. GND
5. -VP          我接-15V直流电压，-20V到-5V都可以
6. LD I 5298的36脚(CP),5299的49脚(LOAD)
7. DF I 5298的35脚(DF)
8. FLM I 5298的37脚(IO1)
9. CP I 5299的47脚(CP)
10. GND
11. D0       5299的43-46脚(D3-D0)
12. D1
13. D2
14. D3
/****************************************************************************************/
编程思路：
      M5299是列驱动，本液晶使用了两片M5299
      M5298是行驱动，本液晶使用了一片M5298
数据线D0--D3是接到M5299上面的（看上面的LCD接口列表），所以就决定了点阵数据在液晶屏上面是横向填充的，这个很重要，你用软件对汉字和图片取模的时候要设置的，也就是设置为横向取模。
   编程的时候主要的接口是：CP，LD，FLM，D0--D3
具体是这样的：
   先给数据D0--D3，接着给移位时钟CP（下降沿），再给
数据D0--D3，再给时钟，……一直到给了32个时钟的时候(此时数据移满一行,32x4=128),给一个锁存信号LD将数据送出.这个M5299的锁存信号同时接到了M5298的CP端,而M5298是行驱动,其结果就是移到了下一行,又开始新一轮的送数据…….当送完整个一屏的时候,也就是一帧,给一个帧信号FLM.

要注意的地方:
   (1)要先给高4位数据,再给低4位数据
   (2)移位时钟是下降沿使能
   (3)移完128点一行后再移8个时钟再锁存
   (4)我用C写程序显示画面有点闪烁，用汇编就没有这个问题
      画面很清晰
/****************************************************************************************/
整个扫屏过程就像是电视机的显像管扫描,如果你看过电视机的
原理,那就很容易理解了.

         数据移位时钟CP VS 显像管行扫描
         数据锁存信号LD VS 显像管场扫描

制作出来的实物图如下：

单片机c语言源程序如下:

//************************************************
// DATA VISION 的12864图形点阵LCD屏
//简介: STN,有LED背光,无控制芯片,驱动芯片为M5299/M5298,4位数据接口,无内部负压
//************************************************
//程序功能：显示图片,AT89s51，用20MHz有源晶振
//单位：桂林电子科技大学/电子工程学院/8201班
//作者:覃秋霖
//2008.5
//************************************************
#include "reg51.h"
#define DATA_POR P0
#define uchar unsigned char
#define uint unsigned int
sbit LOAD = P0^0;
sbit DF = P0^1;
sbit FLM = P0^2;
sbit CLK = P0^3;
uchar code logo[]={
/*-- 宽度x高度=128x64 --*/
0x00,0x00,0x00,0x3F,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-------------------------见附件
};
//*******************************************
//函数名称:void disyPicture(uchar *Ptr)
//函数功能:扫描显示
//形式参数:uchar *Ptr
//行参说明:数组地址
//返回参数:无
//使用说明:无
//*******************************************
void disyPicture(uchar *Ptr)
{
uchar i,j;
uchar dataTemp1,dataTemp2;
bit DF_b;
DF_b = 0;
for(j=1;j<=64;j++) {
for(i=1;i<=16;i++) {
dataTemp1 = *(Ptr++);
DATA_POR = 0;
CLK = 1;
dataTemp2 = DATA_POR & 0x0f;
DATA_POR = (dataTemp1 & 0xf0) | dataTemp2;
CLK = 0;
CLK = 1;
dataTemp2 = DATA_POR & 0x0f;
DATA_POR = (dataTemp1 << 4) | dataTemp2;
CLK = 0;
}
DATA_POR = DATA_POR & 0x0f;
i = 8;
while(i--) {
CLK = 1;
CLK = 0;
}
LOAD = 1;
LOAD = 1;
LOAD = 1;
LOAD = 1;
LOAD = 0;
}
LOAD = 1;
FLM = 1;
DF = ~DF_b;
LOAD = 0;
CLK = 1;
……………………
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单片机汇编语言源程序:

//************************************************
// DATA VISION 的12864图形点阵LCD屏
//简介: STN,有LED背光,无控制芯片,驱动芯片为M5299/M5298,4位数据接口,无内部负压
//************************************************
//程序功能：显示图片,AT89s51，用20MHz有源晶振
//单位：桂林电子科技大学/电子工程学院/8201班
//作者:覃秋霖
//2008.5
//************************************************
LOAD BIT P0.0 ;每行数据锁存,每40个CLK执行一个LOAD
DF BIT P0.1 ;交流驱动信号
FLM BIT P0.2 ;帧信号，每64个LOAD执行一个FLM
CLK BIT P0.3 ;数据移位时钟
DATA_PORT EQU P0
ORG 0000H
LJMP MAIN
ORG 30H
MAIN: MOV DATA_PORT ,#0
LOOP3: MOV DPTR, #0400H-1
MOV R0, #64 ;液晶64行
LOOP4: MOV R1, #16 ;16x8=128,8是下面送出的数据位数
LOOP1: INC DPTR
CLR A
SETB CLK
MOVC A, @A+DPTR ;读数据
ANL A, #0F0H ;保留高4位
ANL DATA_PORT , #0FH ;保留低4位
ORL DATA_PORT , A ;高低位相并输出(输出高4bit数据)
CLR CLK ;数据移位
CLR A
MOVC A, @A+DPTR
SWAP A ;交换A中的高低4bit
SETB CLK ;
ANL A, #0F0H ;-----同上-------
ANL DATA_PORT , #0FH ;
ORL DATA_PORT , A ;高低位相并输出(输出低4bit数据)
CLR CLK
DJNZ R1, LOOP1
ANL P1, #0FH
SETB CLK ;;;;;;;;;;;;;;;;;8个移位时钟(无数据)
CLR CLK ;
SETB CLK ;
CLR CLK ;
SETB CLK ;
CLR CLK ;
SETB CLK ;
CLR CLK ;
SETB CLK ;
CLR CLK ;
SETB CLK ;
CLR CLK ;
SETB CLK ;
CLR CLK ;
SETB CLK ;
CLR CLK ;;;;;;;;;;;;;;;;;
DJNZ R0, LOOP2
SETB LOAD
SETB FLM
CPL DF ;按位取反
CLR LOAD
SETB CLK
CLR FLM
LJMP LOOP3
LOOP2: SETB LOAD
NOP
NOP
CLR LOAD
LJMP LOOP4
ORG 0400H
//字库
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DB 000H, 000H, 000H, 0FFH, 0FCH, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H
DB 000H, 000H, 001H, 0FFH, 0FFH, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H
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DB 000H, 000H, 000H, 01FH, 0FCH, 000H, 070H, 070H, 000H, 038H, 000H, 000H, 000H, 000H, 000H, 006H
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DB 00FH, 0FFH, 0FFH, 0FFH, 0F0H, 001H, 0F3H, 0EEH, 03FH, 0E3H, 000H, 000H, 001H, 0FFH, 0FFH, 080H
DB 01FH, 0FFH, 0FFH, 0FFH, 0F0H, 001H, 0FBH, 0F6H, 07FH, 0F1H, 080H, 000H, 07FH, 0FFH, 0E0H, 000H
DB 01FH, 0FFH, 0FFH, 0FFH, 0F0H, 001H, 0FDH, 0F7H, 07FH, 0F1H, 080H, 000H, 0FEH, 000H, 000H, 000H
DB 03FH, 0FFH, 0FFH, 0FFH, 0F8H, 000H, 0FFH, 0FFH, 07FH, 0F1H, 080H, 003H, 0C0H, 000H, 000H, 000H
DB 03FH, 0FFH, 0FFH, 0FFH, 0F8H, 000H, 0FEH, 01BH, 07FH, 0F1H, 080H, 007H, 080H, 000H, 000H, 000H
DB 03FH, 0FFH, 0FFH, 0FFH, 0F8H, 000H, 00EH, 07BH, 0FFH, 0F1H, 080H, 00EH, 000H, 000H, 000H, 000H
DB 03FH, 0FFH, 0FFH, 0FFH, 0FCH, 000H, 01FH, 07FH, 0FFH, 0F1H, 080H, 01CH, 000H, 000H, 000H, 000H
DB 03FH, 0FFH, 0FFH, 0FFH, 0FCH, 000H, 03FH, 07FH, 0FFH, 0E1H, 080H, 018H, 000H, 000H, 000H, 000H
DB 03FH, 0FFH, 0FFH, 0FFH, 0FEH, 000H, 03FH, 07CH, 0FFH, 0C1H, 080H, 070H, 000H, 000H, 000H, 000H
DB 03FH, 0FFH, 0FFH, 0FFH, 0FFH, 000H, 01FH, 038H, 07FH, 081H, 000H, 0E0H, 000H, 000H, 000H, 000H
DB 03FH, 0FFH, 0FFH, 0FFH, 0FFH, 080H, 00FH, 070H, 03FH, 083H, 001H, 0C0H, 000H, 000H, 000H, 000H
DB 03FH, 0FFH, 0FFH, 0FFH, 0FFH, 0C0H, 006H, 040H, 01DH, 086H, 007H, 000H, 000H, 000H, 000H, 000H
DB 01FH, 0FFH, 0FFH, 0FFH, 0FFH, 0E0H, 000H, 000H, 001H, 084H, 01CH, 000H, 000H, 000H, 000H, 000H
DB 01FH, 0FFH, 0FFH, 0FEH, 000H, 020H, 000H, 000H, 003H, 08CH, 070H, 000H, 000H, 000H, 000H, 000H
DB 01FH, 0FFH, 0FFH, 0F8H, 000H, 000H, 000H, 000H, 003H, 09BH, 0C0H, 000H, 000H, 000H, 000H, 000H
DB 00FH, 0FFH, 0FFH, 0F0H, 03CH, 000H, 000H, 000H, 007H, 01EH, 000H, 000H, 000H, 000H, 000H, 000H
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DB 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H, 000H
END

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ID:94449 · 发表于 2020-2-19 17:57

天天家里蹲，翻出个吃灰的12864，下楼主程序来点亮下，谢谢了。

ID:333807 · 发表于 2020-2-21 09:57

下楼主程序来点亮下，谢谢了。

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51单片机实现12864图形点阵显示C语言与汇编程序及资料

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