#include <avr/io.h>#include <util/delay.h>#include "lcd.h" #define menu_level 3 //菜单表个数#define menu_mete 14 //所有菜单选项个数 struct option{uchar key_level;//当前菜单选项所属菜单表uchar enter_index;//进入的indexuchar cancel_index;//退出indexuchar key_word[16];//菜单描述文字uchar word_mete;//菜单文字个数}; struct option menu_option[menu_mete] ={{0,4,0,"时间功能设置",12},//0{0,9,1,"温湿功能设置",12},//1{0,menu_mete-1,2,"实时显示",8},//2{0,menu_mete-1,3,"关于系统",8},//3{1,menu_mete-1,0,"系统时间设置",12},//4{1,menu_mete-1,0,"系统日期设置",12},//5{1,menu_mete-1,0,"闹钟一设置",10},//6{1,menu_mete-1,0,"闹钟二设置",10},//7{1,menu_mete-1,0,"闹钟三设置",10},//8{2,menu_mete-1,0,"温度上限设置",12},//9{2,menu_mete-1,0,"温度下限设置",12},//10{2,menu_mete-1,0,"湿度上限设置",12},//11{2,menu_mete-1,0,"湿度下限设置",12}, //12{0,0,0,"",0}//13}; uchar level[menu_level][3] ={{0,3,4},{4,8,5},{9,12,4}}; uchar first_line_disp_index=0;//屏幕第一行显示的菜单index值uchar select_line=1;//当前选择的行uchar select_index=0;//当前选择的行的引索(index)uchar last_index=0;//进入功能函数前的引索值uchar last_first_line_index = 0;uchar last_line = 0; void turn_select_white(void);void reflash_lcd(void);void on_menu_step_down(void);void on_menu_step_up(void);void on_menu_enter(void);void on_menu_back(void); /*void wait_until_key_pressed(void){ uchartemp1,temp2; //uint i; do { temp1 = PIND; _delay_ms(10); temp2 = PIND; temp1 &=temp2; } while(temp1& _BV(PIND2)); loop_until_bit_is_set(PIND,PIND2);}*/void key_jump(void){ if( (PINC& 0x10)==0x00) on_menu_step_up(); else if ((PINC & 0x04) ==0x00) on_menu_enter(); else if ((PINC & 0x20) ==0x00 ) on_menu_step_down(); else if ((PINC & 0x08) ==0x00) on_menu_back();} uchar is_menu_level_start(void){ uchari=menu_level; do { if( select_index == level[--i][0]) return1; } while(i); return 0;} uchar is_menu_level_end(void){ uchari=menu_level; do { if(select_index== level[--i][1]) return1; } while (i); return 0;} void on_menu_step_down(void){ lcd_gotoxy(0,select_line-1); lcd_putc(0x20); if(is_menu_level_end()) { first_line_disp_index= level[menu_option[select_index].key_level][0]; select_line= 1; select_index= level[menu_option[select_index].key_level][0]; reflash_lcd(); } else { if(select_line==4) { first_line_disp_index+=4; select_line=1; select_index= first_line_disp_index; reflash_lcd(); } else { select_line++; select_index++; turn_select_white(); } } } void on_menu_step_up(void){ lcd_gotoxy(0,select_line-1); lcd_putc(0x20); if(is_menu_level_start() ) { if((level[menu_option[select_index].key_level][2] % 4) ==0) { first_line_disp_index= level[menu_option[select_index].key_level][1] -3;//level[menu_option[select_index].key_level][1]-4+1 select_line=4; select_index= level[menu_option[select_index].key_level][1]; } else { first_line_disp_index=level[menu_option[select_index].key_level][0]+level[menu_option[select_index].key_level][2]-(level[menu_option[select_index].key_level][2] % 4); select_line=1; select_index=first_line_disp_index; } reflash_lcd(); } else { if(select_line==1) { first_line_disp_index-=4; select_line=4; select_index-= 1; reflash_lcd(); } else { select_line--; select_index--; turn_select_white(); } }} void on_menu_enter(void){ last_index =select_index; last_first_line_index= first_line_disp_index; last_line =select_line; first_line_disp_index= menu_option[select_index].enter_index; select_index= menu_option[select_index].enter_index; select_line =1; reflash_lcd();} void on_menu_back(void){ first_line_disp_index= last_first_line_index; select_line =last_line; select_index= last_index; reflash_lcd();} void reflash_lcd(void){ uchari,count; lcd_clr_screen(); count =level[menu_option[select_index].key_level][1]-first_line_disp_index+1; if(count>4) count=4;//level[menu_option[select_index].key_level][2]-; //else //count=4; for(i=0;i<count;i++) { lcd_gotoxy(1,0+i); lcd_puts(& menu_option[first_line_disp_index+i].key_word[0]); } turn_select_white();}void turn_select_white(void){ lcd_gotoxy(0,select_line-1); lcd_putc(0x1A);} int main (void){ ucharrecent_key = 0x00; DDRD =~_BV(PIND2); PORTD |=_BV(PIND2); DDRC &=0b111000011; PORTC |=0b000111100; lcd_init(); lcd_clr_gram(); reflash_lcd(); while(1){ if(PINC != recent_key) { recent_key= PINC; key_jump(); _delay_ms(10); } } return 0;}