/****************************************************************************************
簡單菜單程序,八個按鍵.使用AVR單片機.2008/3/24--2008/3/29
編譯器為ICCAVR7.14.晶振7.3728M,單片機為ATmega16(用ATmega32在proteus中仿真不成功!)
*****************************************************************************************/

#include <iom16v.h>
#include <macros.h>
#include <stdio.h>
#include "menu.h"		//所有變量定義以及函數聲明均放在這個頭文件里.
#include "delay.h"
#include "lcd_12864.h"
#include "get_key.h"

#define blueon PORTB|=(1<<PORTB5)
#define blueoff PORTB&=~(1<<PORTB5)
#define greenon PORTB|=(1<<PORTB6)
#define greenoff PORTB&=~(1<<PORTB6)
#define redon PORTB|=(1<<PORTB7)
#define redoff PORTB&=~(1<<PORTB7)

//SFR初始化.
void main_init(void)
{
	DDRA=0xff;			//A口設置為輸出.
	PORTA=0x00;
	DDRB=0xff;			//B口設置為輸出.
	PORTB=0x00;
//	ASSR&=~(1<<AS2);
	DDRC=0x00;			//C口設置為輸入.
	PORTC=0xff;			//AVR沒有上拉寄存器,在PORTC中寫1即表示打開上拉了.
	DDRD=0x00;			//D口設置為輸入.												 
	PORTD=0xff;			//打開D口上拉.		
}

void main_menu_initial(void)	//LED主菜單初始化.
{
	main_menu[0].menu_count=3;	//有三個菜單項.
	main_menu[0].display=blue;
	main_menu[0].subs=NULL;		//點亮蘭燈
	main_menu[0].children_menus=blue_menu;
	main_menu[0].parent_menus=NULL;
	
	main_menu[1].menu_count=3;
	main_menu[1].display=green;		//點亮綠燈
	main_menu[1].subs=NULL;
	main_menu[1].children_menus=green_menu;
	main_menu[1].parent_menus=NULL;
	
	main_menu[2].menu_count=3;
	main_menu[2].display=red;		//點亮紅燈.
	main_menu[2].subs=openred;
	main_menu[2].children_menus=NULL;
	main_menu[2].parent_menus=NULL;
}

void blue_menu_initial(void)
{
	blue_menu[0].menu_count=2;
	blue_menu[0].display=qr;			//點亮蘭燈,確認.
	blue_menu[0].subs=openblue;
	blue_menu[0].children_menus=NULL;
	blue_menu[0].parent_menus=main_menu;
	
	blue_menu[1].menu_count=2;
	blue_menu[1].display=qx;			//取消.
	blue_menu[1].subs=closeblue;
	blue_menu[1].children_menus=NULL;
	blue_menu[1].parent_menus=main_menu;	
}

void green_menu_initial(void)
{
	green_menu[0].menu_count=2;
	green_menu[0].display=qr;			//點亮綠燈---確認.
	green_menu[0].subs=opengreen;
	green_menu[0].children_menus=NULL;
	green_menu[0].parent_menus=main_menu;
	
	green_menu[1].menu_count=2;
	green_menu[1].display=qx;			//----取消.
	green_menu[1].subs=closegreen;
	green_menu[1].children_menus=NULL;
	green_menu[1].parent_menus=main_menu;
}


void led_menu_pro(void)
{
	max_item=menu_led->menu_count;
	switch(keyval)
	{
		case 0: break;
		case 1:				//向上鍵.
			if(user_choosen==0)
			{			
				user_choosen=max_item;
			}
			refresh=1;
			user_choosen--;
			break;
		case 2:				//向下鍵.
			user_choosen++;
			if(user_choosen==max_item)
			{
				user_choosen=0;
			}
			refresh=1;
			break;
		case 3:				//確認鍵.			
			if(menu_led[user_choosen].subs!=NULL)
			{
				(*menu_led[user_choosen].subs)();	//執行函數.
			}
			if(menu_led[user_choosen].children_menus!=NULL)
			{
				temp_choosen=user_choosen;
				menu_led=menu_led[user_choosen].children_menus;
				user_choosen=0;
			}
			refresh=1;
			break;
		case 4:				//返回鍵.
			if(menu_led[user_choosen].parent_menus!=NULL)
			{
				menu_led=menu_led[user_choosen].parent_menus;
			}	
			refresh=1;
			break;
		default:
			break;			
	}
	if(refresh)					//是否需要刷新LCD標志位.
	{
		lcd_clr();
		refresh=0;
	}
	led_menu_show();	
}

void led_menu_show(void)	
{
	uchar n;
	max_item=menu_led->menu_count;
	if (max_item>=3)				//菜單項為3則表示為主菜單.
	{				
		for(n=0;n<3;n++)
		{
/*使同一數組元素圖形寬度相同,即取最大的圖形寬度,這里取96,在數組賦值時也要注意*/		
			draw_bmp(n*2,20,96,0,menu_led[n].display);
		}
		select_item(user_choosen);		//標記出當前菜單項.
	}
	else
	{
		switch(temp_choosen)
		{
			case 0:
				draw_bmp(0,20,96,0,blue);
				break;
			case 1:
				draw_bmp(0,20,96,0,green);
				break;
			case 2:
				draw_bmp(0,20,96,0,red);
				break;
			default:
				break;
		}
		for(n=0;n<max_item;n++)
		{
			draw_bmp((n+1)*2,20,32,0,menu_led[n].display);
		}
		select_item(user_choosen+1);					
	}		
}

void select_item(uchar n)
{
	draw_bmp(n*2,2,16,0,curflag);
}

void openblue(void)
{
	blueon;
	greenoff;
	redoff;
}

void opengreen(void)
{
	blueoff;
	greenon;
	redoff;
}

void openred(void)
{
	blueoff;
	greenoff;
	redon;
}

void closeblue(void)
{
	blueoff;
}

void closegreen(void)
{
	greenoff;
}
	



/*************************************************
主程序.
**************************************************/

void main(void)
{
	main_init();
	lcd_init();
	lcd_clr();
	draw_bmp(0,0,128,0,xtcsh);		//函數調用形式為頁,列,寬度,數據指針.
	draw_bmp(2,8,72,0,writeby);
	draw_bmp(4,56,32,1,jiangping);

	blueon;
	greenon;
	redon;
		
	delay_ms(3000);				//延時3秒.
	lcd_clr();
	
	blueoff;
	greenoff;
	redoff;
	
	main_menu_initial();
	blue_menu_initial();
	green_menu_initial();

 	while(1)
	{
 		keyval=get_key();	 			  //讀鍵.
		led_menu_pro();
	}
}