lcd1602.h

单片机c语言程序设计100例--基于PIC+PROTEUS

//-----------------------------------------------------------------
//  名称: 1602液晶头文件
//-----------------------------------------------------------------
#define INT8U  unsigned char
#define INT16U unsigned int
#define _XTAL_FREQ 1000000UL
                  
//LCD命令   
#define LCD_CLS           0x01
#define LCD_HOME          0x02
#define LCD_SETMODE       0x04
#define LCD_SETVISIBLE    0x08
#define LCD_SHIFT         0x10
#define LCD_SETFUNCTION   0x20
#define LCD_SETCGADDR     0x40
#define LCD_SETDDADDR     0x80

//LCD数据端口与命令端口定义
#define PORT_LCD_DAT     PORTB
#define PORT_LCD_CTL     PORTC
#define TRIS_LCD_DAT     TRISB
#define TRIS_LCD_CTL     TRISC

//LCD控制引脚
#define RS  RC0    //寄存器选择
#define RW  RC1    //读/写
#define E   RC2    //使能 
//-----------------------------------------------------------------
// 函数申明
//----------------------------------------------------------------- 
void LCD_Initialize();
void LCD_BUSY_WAIT();
void Write_LCD_Command(INT8U data);
void Write_LCD_Data(INT8U data);
void Set_LCD_POS(INT8U x, INT8U y);
void LCD_ShowString(INT8U x, INT8U y,char *str);