12864-九游会j9

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lcd12864.h

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     lcd12864 8线程序
   p1 8位数据端口
   rs p2.0
   rw p2.1
   en p2.2
   psb 已经外接高电平
   rst 已经外接高电平
********************************

#ifndef __lcd12864_h__
#define __lcd12864_h__

#include"msp430f2232.h"

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      引脚定义
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#define rs_0 p2out &= ~bit0
#define rs_1 p2out |= bit0
#define rw_0 p2out &= ~bit1
#define rw_1 p2out |= bit1
#define en_0 p2out &= ~bit2
#define en_1 p2out |= bit2

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        命令字符定义
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#define first_line 0x80
#define second_line 0x90
#define third_line 0x88
#define fourth_line 0x98

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                       函数定义
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extern void lcd12864_port_init(void);
extern void lcd12864_wait_for_enable(void);
extern void lcd12864_write_command(unsigned int com);
extern void lcd12864_write_data(unsigned int dat);
extern void lcd12864_init(void);

extern void lcd12864_write_string(char adress,char *str);

#endif

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lcd12864.c

#include"lcd12864.h"

void lcd12864_port_init(void)
{
 p2dir=bit0 bit1 bit2;
 p1dir=0xff;
}

void lcd12864_wait_for_enable(void)
{
 char busy;
 rs_0;
 rw_1;
 do
 {
   p1dir=0x00;
   en_1;
   busy = p1in;
   en_0;
 }
 while(busy & 0x80);
 p1dir = 0xff;
}

void lcd12864_write_command(unsigned int com)
{
 lcd12864_wait_for_enable();
 rs_0;
 rw_0;
 p1out = com;
 en_1;
 __delay_cycles(5000);//因为最长的写命令时间为4.7ms
 en_0;
}

void lcd12864_write_data(unsigned int dat)
{
 lcd12864_wait_for_enable();
 rs_1;
 rw_0;
 p1out = dat;
 en_1;
 __delay_cycles(500);
 en_0;
}

void lcd12864_init(void)
{
 __delay_cycles(500000);
 lcd12864_write_command(0x30); 

 lcd12864_write_command(0x01);
 lcd12864_write_command(0x06);
 lcd12864_write_command(0x0c);
}

void lcd12864_write_string(char adress,char *str)
{
 lcd12864_write_command(adress);
 while(*str!='\0')
 {
   lcd12864_write_data(*str);
   str ;
 }
}

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主函数
#include "lcd12864.h"

int main( void )
{
 // stop watchdog timer to prevent time out reset
 wdtctl = wdtpw wdthold;
 lcd12864_port_init();
 lcd12864_init();
 lcd12864_write_string(0x80,"李白斗酒诗百篇");
 lcd12864_write_string(0x90,"长安市上酒家眠");
 lcd12864_write_string(0x88,"天子呼来不上船");
 lcd12864_write_string(0x98,"自称臣是酒中仙");
 while(1);
}

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仿真效果图，在proteus中，用12864，只能仿真汉字，不能仿真字符和数字，否则显示的不清晰，一团乱码。