lcd_1602.h

基于AVR的数字频率计

#ifndef _LCD_1602_h_
#define _LCD_1602_h_

#include "def.h"

#define SET_LCD_RS PORTD|=_BV(P2)
#define CLR_LCD_RS PORTD&=~_BV(P2)

#define SET_LCD_RW PORTD|=_BV(P3)
#define CLR_LCD_RW PORTD&=~_BV(P3)

#define SET_LCD_E  PORTD|=_BV(P4)
#define CLR_LCD_E  PORTD&=~_BV(P4)

#define SET_74LS595_SHIFT PORTB|=_BV(P0)
#define CLR_74LS595_SHIFT PORTB&=~_BV(P0)

#define SET_74LS595_DI PORTD|=_BV(P6)
#define CLR_74LS595_DI PORTD&=~_BV(P6)

#define SET_74LS595_CLK PORTD|=_BV(P7)
#define CLR_74LS595_CLK PORTD&=~_BV(P7)

#define Busy    0x80 //用于检测LCD状态字中的Busy标识

void WriteDataLCD(unsigned char WDLCD);
void WriteCommandLCD(unsigned char WCLCD);
void LCDInit(void);
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);
void DisplayListChar(unsigned char X, unsigned char Y,const unsigned char *DData);
void WriteDataTo595(unsigned char WDLCD);



#endif