lcd_12864_interface.h

ATMEGA16单片机控制LCD1264程序。

#ifndef _LCD12864_INTERFACE_H__
#define _LCD12864_INTERFACE_H__
// Mega16  port C pinout for LCD.
// 串行接口
//只需片选CS,数据SID,时钟CLK三线,
//若在最小系统中可只用SID,CLK.而CS始终接高电平

//接口定义
#define LCD_PORT	PORTB
#define LCD_DDR		DDRB
#define LCD_PIN		PINB
#define LCD_CS		PB1
#define LCD_SID		PB5
#define LCD_CLK		PB7

//控制操作
//数据输入
#define LCD12864_Di			LCD_DDR &=~(1<<LCD_SID)
//数据输出
#define LCD12864_Do			LCD_DDR |= (1<<LCD_SID)

//数据位是否为1
#define LCD_SID_is1			( LCD_PIN & (1<<LCD_SID) )

//片选位清0
#define LCD12864_CS_cls		LCD_PORT &=~(1<<LCD_CS)
//片选位置1
#define LCD12864_CS_stb		LCD_PORT |= (1<<LCD_CS)

//数据位清0
#define LCD_SID_cls			LCD_PORT &=~(1<<LCD_SID)
//数据位置1
#define LCD_SID_stb			LCD_PORT |= (1<<LCD_SID)

//时钟位清0
#define LCD12864_Clk_cls	LCD_PORT &=~(1<<LCD_CLK)
//时钟位置1
#define LCD12864_Clk_stb	LCD_PORT |= (1<<LCD_CLK)
//时钟脉冲信号
#define LCD12864_Clk		delay_nus(1);		\
							LCD12864_Clk_stb;	\
							delay_nus(1);		\
							LCD12864_Clk_cls;	\
							delay_nus(1)
//初始化LCD控制端口
#define Init_LCD_Port()	LCD_DDR |= (1<<LCD_CS|1<<LCD_SID|1<<LCD_CLK);	\
						LCD_PORT |= (1<<LCD_SID)

#endif