//lcd
#include <LiquidCrystal_I2C.h>
#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);


//温度传感器
const float BETA = 3950;

//RGB彩灯
const int pinR = 3;
const int pinG = 5;
const int pinB = 6;

//滑动变阻器
const int potR = A0;
const int potG = A1;
const int potB = A2;

//按钮
#define BUTTON_PIN1 8
#define BUTTON_PIN2 9
#define BUTTON_PIN3 10

int i = 0;
int i1 = 0;

int qp = 0;
int R;
int G;
int B;

void setup() {
  //lcd初始化
  lcd.init();
  //lcd背光
  lcd.backlight();
  //波特率9600
  Serial.begin(9600);
  //彩灯输出
  pinMode(pinR, OUTPUT);
  pinMode(pinG, OUTPUT);
  pinMode(pinB, OUTPUT);
  //滑动变阻器输入
  pinMode(potR, INPUT);
  pinMode(potG, INPUT);
  pinMode(potB, INPUT);
  //闪烁灯
  pinMode(2, OUTPUT);
  //按钮的输入上拉模式（真假判断）
  pinMode(BUTTON_PIN1, INPUT_PULLUP);
  pinMode(BUTTON_PIN2, INPUT_PULLUP);
  pinMode(BUTTON_PIN3, INPUT_PULLUP);
}
//模拟量转换
int readPot(int pin) {
  return map(analogRead(pin), 0, 1023, 0, 255);
}

void loop() {
  //按钮数字输出
  int BT1 = digitalRead((BUTTON_PIN1));
  int BT2 = digitalRead((BUTTON_PIN2));
  int BT3 = digitalRead((BUTTON_PIN3));
  //按钮状态打印输出
  //Serial.println(BT1);
  //Serial.println(BT2);
  //Serial.println(BT3);
  //将滑动变阻器模拟量转化对应的RGB
  R = readPot(potR);
  G = readPot(potG);
  B = readPot(potB);
  //温度的转化和输出
  int temper = analogRead(A3);
  float T = 1 / (log(1 / (1023. / temper - 1)) / BETA + 1.0 / 298.15) - 273.15;
  //Serial.println(T);
  //按钮2按下=0
  if (BT2 == 0) {
    //置位开关 现在=1
    i = !i;
    lcd.clear();
    delay(30);
  }
  //输出当前按钮2状态
  Serial.println(i);
  //按钮1按下 = 0
  if (BT1 == 0) {
    //现在=1
    i1 = !i1;
    lcd.clear();
    delay(30);
  }
  //指定颜色
  if (i == 1) {
    R = 168;
    G = 209;
    B = 111;
  }
  //按钮1和按钮2松开的情况下
  if (i1 == 0 && i==0) {
    lcd.setCursor(0, 1);
    lcd.println("R:");
    lcd.setCursor(2, 1);
    lcd.println(R);

    lcd.setCursor(6, 1);
    lcd.println("G:");
    lcd.setCursor(8, 1);
    lcd.println(G);

    lcd.setCursor(11, 1);
    lcd.println("B:");
    lcd.setCursor(13, 1);
    lcd.println(B);

    lcd.setCursor(0, 0);
    lcd.println("Temper:");
    lcd.setCursor(7, 0);
    lcd.println(T);
    delay(10);
  }
  //按钮1功能
  else if(i==0) {
        lcd.setCursor(0, 1);
    lcd.print("zhangjiajun");
    lcd.setCursor(0, 0);
    lcd.print("21060401028");
    delay(10);




  }
  //
  else if (i==1) {    
    
    lcd.setCursor(0, 0);
    lcd.println("RGB:");
    lcd.setCursor(4, 0);
    lcd.println(R);
    lcd.setCursor(8, 0);
    lcd.println(G);
    lcd.setCursor(12, 0);
    lcd.println(B);
    lcd.setCursor(0, 1);
    delay(10);
  }

  if (T > 30) {
    digitalWrite(2, HIGH);
    delay(30);
    
  }
  else
  {
    analogWrite(2, LOW);
    delay(30);
  }

  analogWrite(pinR, R);
  analogWrite(pinG, G);
  analogWrite(pinB, B);

  if (BT3 == 0 && i == 1) {
    analogWrite(pinR, 0);
    analogWrite(pinG, 0);
    analogWrite(pinB, 0);
    i = 0;
    lcd.clear();
    lcd.backlight();
    delay(8000);
  }
}