#include <LiquidCrystal.h>
uint8_t openState = 0;
uint8_t openState2 = 0;
uint8_t cycle_index = 0;
uint8_t for_dis = 5;
uint8_t bk_dis = 6;
uint8_t left_angle = 10;
uint8_t right_angle = 12;
uint8_t light;
uint8_t music;
LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

void choose_mode()
{ 
  if(digitalRead(2) == 1)//选项一
  { //检测按键是否按下
      delay(100); //延时去抖动
      if(digitalRead(2) == 1){
        openState++;
      }
      while(!digitalRead(2) == 0){;}
  }

  if(digitalRead(5) == 1)//选项二
  { //检测按键是否按下
      delay(100); //延时去抖动
      if(digitalRead(5) == 1){
        openState2++;
      }
      while(!digitalRead(3) == 0){;}
  }

  if(openState==1)
  {
    if(digitalRead(3) == 1)
    { //检测按键是否按下
      delay(100); //延时去抖动
      if(digitalRead(3) == 1){
        cycle_index++;
      }
      while(!digitalRead(3) == 0){;}
    }
    if(digitalRead(4) == 1)
    { //检测按键是否按下
      delay(100); //延时去抖动
      if(digitalRead(4) == 1){
        cycle_index--;
      }
      while(!digitalRead(3) == 0){;}
    }
  }
  if(openState==2)
  {
    if(digitalRead(3) == 1)
    { //检测按键是否按下
      delay(100); //延时去抖动
      if(digitalRead(3) == 1){
        for_dis++;
      }
      while(!digitalRead(3) == 0){;}
    }
    if(digitalRead(4) == 1)
    { //检测按键是否按下
      delay(100); //延时去抖动
      if(digitalRead(4) == 1){
        for_dis--;
      }
      while(!digitalRead(3) == 0){;}
    }
  }
  if(openState==3)
  {
    if(digitalRead(3) == 1)
    { //检测按键是否按下
      delay(100); //延时去抖动
      if(digitalRead(3) == 1){
        bk_dis++;
      }
      while(!digitalRead(3) == 0){;}
    }
    if(digitalRead(4) == 1)
    { //检测按键是否按下
      delay(100); //延时去抖动
      if(digitalRead(4) == 1){
        bk_dis--;
      }
      while(!digitalRead(3) == 0){;}
    }
  }
  if(openState==4)
  {
    if(digitalRead(3) == 1)
    { //检测按键是否按下
      delay(100); //延时去抖动
      if(digitalRead(3) == 1){
        left_angle++;
      }
      while(!digitalRead(3) == 0){;}
    }
    if(digitalRead(4) == 1)
    { //检测按键是否按下
      delay(100); //延时去抖动
      if(digitalRead(4) == 1){
        left_angle--;
      }
      while(!digitalRead(3) == 0){;}
    }
  }
  if(openState==5)
  {
    if(digitalRead(3) == 1)
    { //检测按键是否按下
      delay(100); //延时去抖动
      if(digitalRead(3) == 1)
      {
        right_angle++;
      }
      while(!digitalRead(3) == 0){;}
    }
    if(digitalRead(4) == 1)
    { //检测按键是否按下
      delay(100); //延时去抖动
      if(digitalRead(4) == 1)
      {
        right_angle--;
      }
      while(!digitalRead(3) == 0){;}
    }
  }
}

void setup() {
  lcd.begin(16,2);
  lcd.print("Hello World!");
  pinMode(2,INPUT);
  pinMode(3,INPUT);
  pinMode(4,INPUT);
  pinMode(5,INPUT);
  pinMode(6,INPUT);
}
void loop() {
  choose_mode();
  lcd.clear();
  switch(openState)
  {
    case 1:
    lcd.print("cycle_index:" + String(cycle_index));
    delay(500);
    break;
    case 2:
    lcd.print("for_dis:" + String(for_dis));
    delay(500);
    break;
    case 3:
    lcd.print("bk_dis:" + String(bk_dis));
    delay(500);
    break;
    case 4:
    lcd.print("left_angle:" + String(left_angle));
    delay(500);
    break;
    case 5:
    lcd.print("right_angle:" + String(right_angle));
    delay(500);
    break;
    case 6:
    lcd.print("light");
    delay(500);
    break;
    case 7:
    lcd.print("music");
    delay(500);
    break;
  }
  if(openState == 8) openState = 1;
  
    lcd.clear();
  switch(openState2)
  {
    case 1:
    lcd.print("sanjiaoxing");
    delay(500);
    break;
   case 2:
    lcd.print("zhengfangxing");
    delay(500);
    break;
  }
  if(openState2 == 8) openState2 = 1;
 
}