lcd.h

OCM4X8C驱动 作者：孙新虎 [e-mail] 日期：200412

#ifndef __lcd_h__
#define __lcd_h__


#define LCD_RS	PB1
#define LCD_RW	PB2
#define LCD_E	PB3
#define LCD_RST	PB4


#define LCD_POWER_OFF()	DDRB &= ~_BV(PB0)
#define LCD_POWER_ON()	DDRB |= _BV(PB0)

#define CLR_RS()	PORTB &= ~_BV(LCD_RS)
#define SET_RS()	PORTB |= _BV(LCD_RS)

#define CLR_RW()	PORTB &= ~_BV(LCD_RW)
#define SET_RW()	PORTB |= _BV(LCD_RW)

#define CLR_E()		PORTB &= ~_BV(LCD_E)
#define SET_E()		PORTB |= _BV(LCD_E)

#define CLR_RST()	PORTB &= ~_BV(LCD_RST)
#define SET_RST()	PORTB |= _BV(LCD_RST)

//LCD指令集

#define CLR_DISPLAY		0x01
#define CLR_DDRAM_COUNT	0x02


void delay(uint8_t i);		//短时间延时
void lcd_power_on(void);	//打开LCD电源
void lcd_power_off(void);	//关闭LCD电源
void lcd_rst(void);
void lcd_chk_busy(void);	//测试忙
void lcd_write_data(uint8_t data);	//向LCD写入数据
void lcd_write_command(uint8_t command);	//向LCD写入命令
void lcd_write_chinese(uint16_t ch);
uint8_t lcd_read_byte(void);	//从LCD读数据
void lcd_init(void);		//LCD初始化
void test(void);			//测试

#endif