#include <msp430x14x.h>
#include "lcd1602_h.h"
void delay_nms(void);
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer
LCD_init();
while(1)
{
LCD_write_string(0,0,"Wellcomefighting");
LCD_write_string(0,1,"i am the one ");
delay_nms();
LCD_write_string(0,0,"HELLO WORLD ");
LCD_write_string(0,1," lianghongzhi ");
delay_nms();
}
}
void delay_nms(void)
{
unsigned int count,i;
for(count = 4; count > 0; count--)
for(i=50000;i>0;i--);
}
下面是1602的子程序
/******************************************************************/
//
// DIY by 梁鸿志
//
// 硬件连接信息（调试液晶型号LCD1602）
// 1--VSS GND
// 2--VDD VCC
// 3--V0 至地
// 4--RS 数据/命令选择
// 5--R/W 读写控制
// 6--E 使能
// 7--DB0 DB0
// 14-DB7 DB7
// 15-LEDA 背光正
// 16-LEDK 背光负(接地）
//
// 硬件上需要修改的话，有两个函数需要改动
// LCD_Busy() 读忙函数
// LCD_Init() 初始化函数
/******************************************************************/
#include "lcd1602_h.h"
/********************************************************************/
void LCD_init(void)
{
P2DIR |= 0xff;
P1DIR |= 0xff;
LCD_en_command(0x0C);
LCD_en_command(0x06);
LCD_en_command(0x80);
LCD_en_command(0x38);
LCD_en_command(0x01);
}
/********************************************************************/
void LCD_Busy(void)
{
char BF = 0; // busy flag
CLR_LCD_RS;
SET_LCD_RW;
P2DIR = 0x00; // modify this if you change hardware
do
{
SET_LCD_EN;
BF = P2IN;
CLR_LCD_EN;
} while(BF & 0x80);
P2DIR = 0xff; // modify this if you change hardware
}
void LCD_delay(void)
{
unsigned int i;
for(i=500;i>0;i--); // need modify this time at differert mcu
}
/********************************************************************/
void LCD_en_command(unsigned char command)
{
LCD_Busy();
CLR_LCD_RS;
CLR_LCD_RW;
SET_LCD_EN;
LCD_I0=command;
CLR_LCD_EN;
}
/********************************************************************/
void LCD_en_dat(unsigned char dat)
{
LCD_Busy();
SET_LCD_RS;
CLR_LCD_RW;
SET_LCD_EN;
LCD_I0=dat;
CLR_LCD_EN;
}
/********************************************************************/
void LCD_set_xy( unsigned char x, unsigned char y )
{
unsigned char address;
if (y == 0)
address = 0x80 + x;
else
address = 0xc0 + x;
LCD_en_command(address);
}
/********************************************************************/
void LCD_write_char( unsigned x,unsigned char y,unsigned char dat)
{
LCD_set_xy( x, y );
LCD_en_dat(dat);
}
/********************************************************************/
void LCD_write_string(unsigned char X,unsigned char Y,unsigned char *s)
{
LCD_set_xy( X, Y );
while (*s)
{
LCD_I0=*s;
LCD_en_dat(*s);
s ++;
}
}
1602自身的头文件
/********************************************************************/
#ifndef __LCD1602_H__
#define __LCD1602_H__
#include "msp430x14x.h"
#define LCDCTL P1OUT
#define LCD_I0 P2OUT
#define SET_LCD_RS LCDCTL |= BIT0
#define CLR_LCD_RS LCDCTL &= ~BIT0
#define SET_LCD_RW; LCDCTL |= BIT2
#define CLR_LCD_RW; LCDCTL &= ~BIT2
#define SET_LCD_EN; LCDCTL |= BIT4
#define CLR_LCD_EN; LCDCTL &= ~BIT4
void LCD_write_string(unsigned char X,unsigned char Y,unsigned char *s);
void LCD_write_char( unsigned x,unsigned char y,unsigned char dat);
void LCD_set_xy( unsigned char x, unsigned char y );
void LCD_en_dat(unsigned char dat);
void LCD_en_command(unsigned char command);
void LCD_init(void);
void LCD_Busy(void);
#endif
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