#ifndef _LCD12864_INTERFACE_H__
#define _LCD12864_INTERFACE_H__
// Mega16  port C pinout for LCD.
// 串行接口
//只需片選CS,數據SID,時鐘CLK三線,
//若在最小系統中可只用SID,CLK.而CS始終接高電平

//接口定義
#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
//數據輸入
#define LCD12864_Di			LCD_DDR &=~(1<<LCD_SID)
//數據輸出
#define LCD12864_Do			LCD_DDR |= (1<<LCD_SID)

//數據位是否為1
#define LCD_SID_is1			( LCD_PIN & (1<<LCD_SID) )

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

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

//時鐘位清0
#define LCD12864_Clk_cls	LCD_PORT &=~(1<<LCD_CLK)
//時鐘位置1
#define LCD12864_Clk_stb	LCD_PORT |= (1<<LCD_CLK)
//時鐘脈沖信號
#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