#include <LiquidCrystal_I2C.h>
#define I2C_ADDR 0x27
#define LCD_COLUMNS 20
#define LCD_LINES  4
int inputPin = 4;               // choose the input pin (for PIR sensor)
int motionDetectedCount = 0;
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

void setup() {
 pinMode(inputPin, INPUT);     // declare sensor as input  
 Serial.begin(9600); // put your setup code here, to run once:
 lcd.init();
 lcd.backlight();
}
void loop() {
//Teperature sensor
 const float BETA = 3950; // should match the Beta Coefficient of the thermistor
 int analogValue = analogRead(25);
 float celsius = 1 / (log(1 / (4095. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
 Serial.print("The bus inner temperature: ");
 Serial.print(celsius);
 Serial.print("\n ");
 // Print something
 lcd.setCursor(0, 0);
 lcd.print("Temperature: ");
 lcd.print(celsius); 
 delay(1000);
 
 //motion sensor
    int motionStatus = digitalRead(inputPin); // 读取PIR传感器的状态
    if (motionStatus == HIGH) { // 如果检测到运动
        motionDetectedCount++; // 增加运动检测计数
        Serial.print("Motion detected! Total times: ");
        Serial.println(motionDetectedCount);
        // 加入一段延迟，防止同一运动事件被多次计数。
        //运动传感器和温度传感器在这时段内无法计数
        delay(5000);
}
    }