lcd1602._h

lcd的液晶显示程序

/*---------------------------------------------------------
液晶LCD1602C  使用4条数据线(D4~D7)
编译器：ICC-AVR v6.31A 日期: 2005-11-24 20:29:57
目标芯片 : M16
时钟: 8.0000Mhz
作者：archeng504
-----------------------------------------------------------*/
/*-------------------------------------------------------------
LCD引脚定义
1---GND 
2---VCC
3---VO
4---RS
5---RW
6---EN
7到14--D0-D7
15--背景灯+
16--背景灯-
-----------------------------------------------------------------*/
#include <iom8v.h>
#include <macros.h>

/*---------------------------------------------------------------
下面是AVR与LCD连接信息
PA2 ->RS
PA3 ->EN
地  ->RW
PA4 ->D4
PA5 ->D5
PA6 ->D6
PA7 ->D7
要使用本驱动，改变下面配置信息即可
-----------------------------------------------------------------*/
#define LCD_EN_PORT    PORTD   //以下2个要设为同一个口
#define LCD_EN_DDR     DDRD
#define LCD_RS_PORT    PORTD   //以下2个要设为同一个口
#define LCD_RS_DDR     DDRD
#define LCD_DATA_PORT  PORTD   //以下3个要设为同一个口
#define LCD_DATA_DDR   DDRD    //一定要用高4位
#define LCD_DATA_PIN   PIND
#define LCD_RS         (1<<PD0) //0x04   portA2       out
#define LCD_EN         (1<<PD2) //0x08   portA3       out
#define LCD_DATA       ((1<<PD4)|(1<<PD5)|(1<<PD6)|(1<<PD7)) //0xf0   portD4/5/6/7 out
/*--------------------------------------------------------------------------------------------------
函数说明
--------------------------------------------------------------------------------------------------*/
void LCD_init(void);
void LCD_en_write(void);
void LCD_write_command(unsigned  char command) ;
void LCD_write_data(unsigned char data);
void LCD_set_xy (unsigned char x, unsigned char y);
void LCD_write_string(unsigned char X,unsigned char Y,unsigned char *s);
void LCD_write_char(unsigned char X,unsigned char Y,unsigned char data);
void delay_nus(unsigned int n);
void delay_nms(unsigned int n);