MSP430单片机驱动LCM240128液晶显示汉字和字符数字

朱志兴

2018-7-6 00:11:59 2326 单片机

//器件：LCM2401282ZK
//控制器：T6963C
//日期：2009.06.15
#include
#include "LCM2401282ZK.h"
//============================控制线定义========================================
#define WR1 BIT3 // WR1 = P5.3
#define RD1 BIT2 // RD1 = P5.2
#define CE BIT1 // CE = P5.1
#define CD BIT6 // CD = P3.6
#define FS BIT0 // FS = P5.0
#define RST BIT7 // RST = P3.7 正常情况下，5个低电平信号实现复位，然后高电平进入正常工作状态
#define WR1_0 P5OUT &= ~WR1
#define WR1_1 P5OUT |= WR1
#define RD1_0 P5OUT &= ~RD1
#define RD1_1 P5OUT |= RD1
#define CE_0 P5OUT &= ~CE
#define CE_1 P5OUT |= CE
#define CD_0 P3OUT &= ~CD
#define CD_1 P3OUT |= CD
#define FS_0 P5OUT &= ~FS
#define FS_1 P5OUT |= FS
#define RST_0 P3OUT &= ~RST
#define RST_1 P3OUT |= RST // 控制线输出高、低电平定义
unsigned char cradd1,cradd2,dat2,dat0,com,ctrlcode;
unsigned char urow,ucol,h;
unsigned char STA; //用于存放p4口的状态
//==============================================================================
// 定义的汉字字库
//==============================================================================
const unsigned char hztab_bzj[175][32]={
};// 这里自己定义字库
//==============================小延时==========================================
void short_delay(unsigned int i)
{
unsigned int j;
for(j=0;j<=i;j++);
}
//==============================延时ms级========================================
void delayms(unsigned char tickms)
{
unsigned int count,i;
_NOP();
_NOP();
_NOP();
for(i=tickms;i>0;i--)
{ for(count=0;count<4000;count++) {;}
_NOP();
}
}
//==============================写显示数据子程序（左）==========================
void wrdata(unsigned char dat0)
{
unsigned char cradd1;
CD_1;
CE_0;
do
{
P4DIR=0xff; //P4口设置为输出
P4OUT=0xff;
RD1_0;
P4DIR=0x00; //P4口设置为输入
cradd1=P4IN;
RD1_1;
}
while((cradd1&0x03)==0) ;
P4DIR=0xff; //P4口设置为输出
P4OUT=0xff;
CD_0;
P4OUT=dat0;
WR1_0;
WR1_1;
}
//==============================/* 写指令代码子程序（左）*/=====================
void wrctrl0(unsigned char com)
{
unsigned char cradd1;
CD_1;
CE_0;
do
{
P4DIR=0xff; //P4口设置为输出
P4OUT=0xff;
RD1_0;
P4DIR=0x00; //P4口设置为输入
cradd1=P4IN;
RD1_1;
}
while((cradd1&0x03)==0);
P4DIR=0xff; //P4口设置为输出
P4OUT=0xff;
CD_1;
P4OUT=com;
WR1_0;
WR1_1;
}
void wrctrl(unsigned char dat1,unsigned char dat2,unsigned char ctrlcode)
{
wrdata(dat1);
_NOP();
_NOP();
_NOP();
wrdata(dat2);
_NOP();
_NOP();
_NOP();
wrctrl0(ctrlcode);
}
//==============================清屏============================================
void clrc(void)
{ unsigned char i,j;
wrctrl(0x00,0x00,0x24);
wrctrl0(0xb0);
for(i=0;i<64;i++)
{
for(j=0;j<30;j++)
{
wrdata(0x10);
}
}
}
//==============================清寄存器========================================
void clrg(void)
{ unsigned char i,j;
wrctrl(0x00,0x08,0x42);
wrctrl(0x1e,0x00,0x43);
wrctrl(0x00,0x08,0x24);
wrctrl0(0xb0);
for(i=0;i<128;i++)
{
for(j=0;j<30;j++)
{
wrdata(0x00);
}
}
wrctrl0(0xb2);
}
//==============================================================================
void allon(void)
{ unsigned char i,j;
wrctrl(0x00,0x08,0x42);
wrctrl(0x1e,0x00,0x43);
wrctrl(0x00,0x08,0x24);
wrctrl0(0xb0);
for(i=0;i<64;i++)
{
for(j=0;j<30;j++)
{
wrdata(0xff);
}
}
wrctrl0(0xb2);
}
//==============================================================================
void stripe(void)
{ unsigned char i,j;
wrctrl(0x00,0x08,0x42);
wrctrl(0x1e,0x00,0x43);
wrctrl(0x00,0x08,0x24);
wrctrl0(0xb0);
for(i=0;i<64;i++)
{
for(j=0;j<30;j++)
{
wrdata(0xaa);
}
}
wrctrl0(0xb2);
}
//==============================================================================
void stripe1(void)
{ unsigned char i,j;
wrctrl(0x00,0x08,0x42);
wrctrl(0x1e,0x00,0x43);
wrctrl(0x00,0x08,0x24);
wrctrl0(0xb0);
for(i=0;i<64;i++)
{
for(j=0;j<30;j++)
{
wrdata(0x55);
}
}
wrctrl0(0xb2);
}
//==============================/* 设置当前地址*/===============================
void fnSetPos(unsigned char urow, unsigned char ucol)
{
unsigned int iPos;
iPos = urow * 30 + ucol;
wrctrl(iPos & 0xFF,iPos / 256+0x08,0x24);
}
//==============================/*写汉字子程序*/================================
void wrhz_lcd(unsigned char h,unsigned char urow,unsigned char ucol)
{ unsigned char dat10;
unsigned int i,j,k;
wrctrl(0x00,0x08,0x42);
wrctrl(0x1e,0x00,0x43);
wrctrl(0x00,0x08,0x24);
fnSetPos(urow, ucol);
k=0;
for(i=0;i<16;i++)
{ wrctrl0(0xb0);
for(j=0;j<2;j++)
{
dat10= hztab_bzj[h][k];
wrdata(dat10);
k++;
}
wrctrl0(0xb2);
fnSetPos(urow+(i+1), ucol);
}
}
//2009.07.06 evening
//==============================================================================
//==============================读液晶状态字到STA===============================1
//功能：用于往液晶写数据或命令之前判断忙闲
void read_sta(void)
{
P4DIR=0x00; //P4数据输入，由液晶到430，不需要电平的转换，因为是3.3V的液晶模块
CD_1; //命令方式
RD1_0; //read
STA=P4IN; //读回状态
RD1_1; //cancel read
P4DIR=0xff; //P4口设置为数据输出模式，由430到液晶
}
//==============================判断位S1,S0函数（读写指令和读写数据状态）=======2
void ST1(void)
{
do
{
read_sta();
}
while((STA&0x03)!=0x03); //0000 0011---忙：1 闲：0
}
//==============================判断位S2函数（数据自动读状态）==================3
void ST2(void)
{
do
{
read_sta();
}
while((STA&0x04)!=0x04); //0000 0100---忙：1 闲：0
}
//==============================判断位S3函数（数据自动写状态）==================4
void ST3(void)
{
do
{
read_sta();
}
while((STA&0x08)!=0x08); //0000 1000---忙：1 闲：0
}
//==============================/*写入数据字节 */ ==============================5
//one byte
void write_data(unsigned char Byte )
{
ST1(); //读完状态后，设置为输出模式---这里是正确的
P4OUT = Byte;
CD_0; //数据方式
WR1_0; // write
WR1_1;
}
//==============================/*自动写入数据字节 */ ==========================6
//不用判断状态标志位
void autowrite_data(unsigned char Byte )
{
P4OUT = Byte;
CD_0; //数据方式
WR1_0; // write
WR1_1;
}
//==============================/*写入命令字 */ ================================7
void write_cmd(unsigned char cmd )
{
ST1();
P4OUT = cmd ;
CD_1; //命令方式
WR1_0; // write
WR1_1;
}
//==============================/*写只有一个参数的命令 */ =====================8
void write_onepara(unsigned char dat1,unsigned char command )
{
write_data(dat1);
write_cmd(command);
}
//==============================/*写含有二个参数的命令 */ =====================9
void write_doublepara(unsigned char dat1,unsigned char dat2,unsigned char command )
{
write_data(dat1);
write_data(dat2);
write_cmd(command);
}
//==============================/*清显示缓冲的函数 */ ========================10
void CLEAR_RAM( void )
{
int i;
write_doublepara(0x00,0x00,0x24); /* 设置显示RAM 首地址 */
//24H Address Pointer Set D1:Low ADRS D2:High ADRS
//the address pointer se command is used to indicate the start address for writing(or reading) to external RAM.
write_cmd(0xb0); /* 设置自动写方式 */
//b0H Data auto write set
//Note:Status check for auto mode(STA2,STA3)should be checked between each data.
for(i=0;i<8192;i++) /* 清8K=8192存储器 */
{
ST3(); /* 判状态位S3 */
write_data(0x00); /* 写入数据 */
}
write_cmd(0xb2); /* 设置自动写结束指令 */
//b2H Auto reset
// Auto reset should be performed after checking STA3=1(STA2=1).
}
//==============================/*对液晶屏的一些初始设置函数 */ ==============11
void LcdIni( void )
{
write_doublepara(0x00,0x00,0x40); /*设文本显示区域首地址*/
//40H Text home address set D1:Low address D2:High address
//The starting address of external display RAM for Text display is defined by this command.
//The text home address shows the left end and most upper position.
write_doublepara(0x20,0x00,0x41); /*设文本显示区域宽度*/
//显示区域宽度为32.。需要说明的是为了计算地址的方便，设置显示区域的宽度为20H
//41H Text area set D1:Columns(列) D2:00H
//---------------------------宽度根据实际情况来改变吧！！！2009.07.06
/*
------------------------------------------------------------------------
TH | | TH+CL
------------------------------------------------------------------------
TH+TA | | TH+TA+CL
------------------------------------------------------------------------
(TH+TA)+TA | | TH+2TA+CL
------------------------------------------------------------------------
TH:Text home address
TA:Text area number(columns)
CL:Columns are fixed by hardware.(pin-programmable)
*/
//write_doublepara(0x03,0x00,0x22); /* 设置CGRAM偏置地址 */
//22H Function:Offset Register Set D1:Data D2:00H
//The offset register is used to determine external character generator RAM area.
//The upper 5bit(ad15-ad11)are determined by offset register.
write_doublepara(0x00,0x08,0x42); /*设图形显示区域首地址*/
//42H Graphic home address set D1:Low address D2:High address
write_doublepara(0x20,0x00,0x43); /*设图形显示区域宽度*/
//0x1e-ox20
//43H Graphic area set D1:Columns D2:00H
/*
------------------------------------------------------------------------
GH | | GH+CL
------------------------------------------------------------------------
GH+GA | | GH+GA+CL
------------------------------------------------------------------------
(GH+GA)+GA | | GH+2GA+CL
------------------------------------------------------------------------
GH:Graphic home address
GA:Graphic area number(columns)
CL:Columns are fixed by hardware.(pin-programmable)
*/
write_cmd(0xa0); /*光标形状设置*/
write_doublepara(0x00,0x00,0x21); /* 设置光标位置*/
/*
1010 0000 | 1 line cursor
1010 0001 | 2 line cursor
…… | ……
10100111 | 8 lines cursor,选择为最大的光标
when cursor display is ON,this command selects the cursor pattern form 1
line to 8 lines.the cursor address is defined by cursor pointer set command.
*/
//write_doublepara(0x08,0x08,0x21); /* 设置光标位置*/
//21H Cursor Pointer Set X ADRS Y ADRS
//X ADRS----=00H~4FH (Lower 7bits are valid)
//Y ADRS----=00H~1FH (Lower 5bits are valid)
//The cursor position is moved only by this command.
write_cmd(0x80); /*显示方式设置逻辑"或"合成, 内部字符发生器有效*/
/* Mode Set
------------------------------------------------------------------------
Code | Function
1000x000 | "OR" Mode
1000x001 | "EXOR" Mode
1000x011 | "AND" Mode
1000x100 | "TEXT ATTRIBUTE" Mode
10000xxx | Internal Charater Generator Mode
10001xxx | External ……
------------------------------------------------------------------------
When internal character generator mode is selected,character code 00
-7FH are selected from built-in character generator ROM.The character code
80H-FFH are automatically selected external character generator RAM.
*/
//write_cmd(0x9c); /*显示开关设置---开本和开图形显示*/
write_cmd(0x9f);
/* Display Set
------------------------------------------------------------------------
Code | Function
10010000 | Display off
1001xx10 | Cursor on,blink off
1001xx11 | Cursor on,blink on
100101xx | Text on,graphic off
100110xx | Text off,graphic on
100111xx | Text on,graphic on
------------------------------------------------------------------------
1 0 0 1 d3 d2 d1 d0
|d0:Cursor blink on:1,off:0
|d1:Cursor display on:1,off:0
|d2:Text display on:1,off:0
|d3:Graphic display on:1,off:0
Note:It is necessary to turn on "Text display" and "Graphic display" in
following case.
1)Combination of text/graphic display;
2)Attribute function;
*/
/*初始化完成后，开文本和图形显示。此时调整对比度电压，显示屏上将因显示存
储器上电时的随机数据而显示出随机的图形和字符。以此可以验证接口电路和驱动
程序的正确性。*/
//CLEAR_RAM();
}
//==============================西文字符写入函数================================
//x_asx:0~29; y_asc:0~15
void write_asc(unsigned char x_asc,unsigned char y_asc,unsigned char code_asc)
{
unsigned int address;
address=y_asc*32+x_asc;
write_doublepara((unsigned char)(address),(unsigned char)(address>>8),0x24);
//设置显示存储器地址
write_onepara(code_asc,0xc4);
//装入字符代码，写入数据，地址不变
}
//==============================汉字写入函数（正显）============================
//x_hz:0-29; y_hz:0-127
void write_hz1(unsigned char x_hz,unsigned char y_hz,unsigned char code_hz)
{
unsigned char i_hz;
unsigned int address,addr_hz;
address=y_hz*32+x_hz+0x0800; //计算显示存储器的地址
//addr_hz=code_hz*32; //计算汉字字模地址（cctab的下标）由32改为16
addr_hz=0;
for(i_hz=0;i_hz<16;i_hz++) //计数值16
{
write_doublepara((unsigned char)(address),(unsigned char)(address>>8),0x24);
//设置显示存储器地址
write_onepara(hztab_bzj[code_hz][addr_hz],0xc0); //写入汉字字模左部
write_onepara(hztab_bzj[code_hz][16+addr_hz++],0xc0);//写入汉字字模右部
address+=32;//修改显示存储器地址，显示下一列（共16列）
}
}
//==============================汉字写入函数（反显）============================
void write_hz2(unsigned char x_hz,unsigned char y_hz,unsigned char code_hz)
{
unsigned char i_hz;
unsigned int address,addr_hz;
address=y_hz*32+x_hz+0x0800; //计算显示存储器的地址
//addr_hz=code_hz*32; //计算汉字字模地址（cctab的下标）由32改为16
addr_hz=0;
for(i_hz=0;i_hz<16;i_hz++) //计数值16
{
write_doublepara((unsigned char)(address),(unsigned char)(address>>8),0x24);
//设置显示存储器地址
write_onepara((255-hztab_bzj[code_hz][addr_hz]),0xc0);//写入汉字字模左部
write_onepara((255-hztab_bzj[code_hz][16+addr_hz++]),0xc0);//写入汉字字模右部
address+=32;//修改显示存储器地址，显示下一列（共16列）
}
}
//================================显示一个点函数================================
//x:0-239; y:0-127(消除点) 128-255（显示点）
void write_point(unsigned char x,unsigned char y)
{
unsigned char x_pt,y_pt;
unsigned int address;
x_pt=x;
y_pt=y;
address=(y_pt&0x7f)*32+x_pt/8+0x0800;//计算显示存储器地址
write_doublepara((unsigned char)(address),(unsigned char)(address>>8),0x24);
//设置显示存储器地址
x_pt=(~(x_pt%8))&0x07;
y_pt=((y_pt&0x80)>>4)|0xf0;
write_cmd(x_pt|y_pt);//写入数据
}
//===================================显示矩形框=================================
//x:0-239,y:0-127
void rectangle(unsigned char xstar,unsigned char xend,unsigned char ystar,unsigned char yend)
{
unsigned char i;
ystar+=128;
yend+=128; //显示点
for(i=xstar;i<=xend;i++)
{
write_point(i,ystar);
write_point(i,yend);
}
for(i=ystar;i<=yend;i++)
{
write_point(xstar,i);
write_point(xend,i);
}
}
//========================================擦除矩形框============================
void clr_rectangle(unsigned char xstar,unsigned char xend,unsigned char ystar,unsigned char yend)
{
unsigned char i;
for(i=xstar;i<=xend;i++)
{
write_point(i,ystar);
write_point(i,yend);
}
for(i=ystar;i<=yend;i++)
{
write_point(xstar,i);
write_point(xend,i);
}
}
//==============================================================================1400