像Arduino一样使用AVR单片机-LCD1602库

Arduino之所以会火,是因为它的易用性.而它的易用性则来源与世界各地的程序员为它做好的易用的库.AVR的使用相对Arduino比较难,因为它要设置各种寄存器,提高AVR的使用性的方法就是把每一个功能模块都写成库,不管什么使用,都只要调用一两个函数就好了.

我会在此博客持续更新我自己的AVR库,方便大家的使用.

个人原创,转载请注明原文出处,并保留链接:

 http://www.embbnux.com/2014/03/23/use_avr_like_arduino_lcd1602/ 

今天 公开的是1602LCD接口驱动:

头文件及使用介绍:

/******************************************************************
========CopyRight of Embbnux Ji ========================================
========Writer : Embbnux Ji ============================================
========http://www.embbnux.com =========================================
==========avr 1602_lcd驱动程序 ============================================
===========ATmega16 16MHZ ==========================================
*********************************************************************/
#ifndef DRIVER_1602_H_H_
#define DRIVER_1602_H_H_

# include <avr/io.h>

#define LCD_DATA_PORT PORTC //定义LCD的D0-D7所在端口
#define LCD_DATA_POUT DDRC=0xFF //定义LCD数据端口为输出
#define LCD_DATA_PIN DDRC=0x00 //定义LCD数据端口为输入(在读LCD状态时用到)

#define LCD_Control_PORT PORTB //定义LCD的EN RW RS所在端口
#define LCD_Control_OUT DDRB|=(1<<DDB5)|(1<<DDB6)|(1<<DDB7)
#define LCD_Control_IN DDRB&=~((1<<DDB5)|(1<<DDB6)|(1<<DDB7))

#define LCD_EN_1 PORTB|=1<<PB5
#define LCD_EN_0 PORTB&=~(1<<PB5)
//LCD读写控制引脚
#define LCD_RW_1 PORTB|=1<<PB6
#define LCD_RW_0 PORTB&=~(1<<PB6)
//LCD指令或数据选择引脚
#define LCD_RS_1 PORTB|=1<<PB7
#define LCD_RS_0 PORTB&=~(1<<PB7)

extern void LCD_init(void);
extern void mcu_init(void);
extern void LCD_en_write(void);
extern void wait_LCD_Ready(void);

extern void set_LCD_xy(unsigned char x, unsigned char y );
extern void LCD_write_onechar(unsigned char COMM,unsigned char DAT);
extern void LCD_write_string(unsigned char X,unsigned char Y,unsigned char *string);
extern void LCD_close();
extern void LCD_clean();
extern void LCD_write_int(unsigned char X,unsigned char Y,unsigned int num);
extern void int_to_char (unsigned int num,unsigned char * string);
#endif

使用介绍:

LCD初始化:

LCD_init();

打印字符串从LCD的第一行的第一列开始:

unsigned char display[]= {" http://www.embbnux.com "};

LCD_write_string(0,0,display);

打印整型数到LCD:

unsigned int num = 200;

LCD_write_int(0,1,num);

具体程序下载,请到我的github上下载:

https://github.com/embbnux/AVR-LIKE-Arduino