//filename: ESP32 WiFi test and temperature monitor test(2022.11.25)

/*
   PIR sensor tester
*/

int ledPin = 13;                // choose the pin for the LED
int inputPin = 2;               // choose the input pin (for PIR sensor)
int pirState = LOW;             // we start, assuming no motion detected
int val = 0;                    // variable for reading the pin status

void setup() {
  pinMode(ledPin, OUTPUT);      // declare LED as output
  pinMode(inputPin, INPUT);     // declare sensor as input

  Serial.begin(9600);
}

void loop() {
  val = digitalRead(inputPin);  // read input value
  if (val == HIGH) {            // check if the input is HIGH
    digitalWrite(ledPin, HIGH);  // turn LED ON
    if (pirState == LOW) {
      // we have just turned on
      Serial.println("Motion detected!");
      // We only want to print on the output change, not state
      pirState = HIGH;
    }
  } else {
    digitalWrite(ledPin, LOW); // turn LED OFF
    if (pirState == HIGH) {
      // we have just turned of
      Serial.println("Motion ended!");
      // We only want to print on the output change, not state
      pirState = LOW;
    }
  }
}


/*
#include "WiFi.h"

const char ssid[]="張俊隆 的 iPhone"; //修改為你家的WiFi網路名稱
const char pwd[]="0922909128"; //修改為你家的WiFi密碼

void setup() {
  // put your setup code here, to run once:
  //Show ESP32 connected
  Serial.begin(115200);
  Serial.println("Hello, Vincent's ESP32!");

  WiFi.mode(WIFI_STA); //設置WiFi模式
  WiFi.begin(ssid,pwd); 

  /*
  //當WiFi連線時會回傳WL_CONNECTED，因此跳出迴圈時代表已成功連線
  while(WiFi.status()!= WL_CONNECTED){
    Serial.print(".");
    delay(1000);  
    }
  } 
  */

/*
void loop() {
  // put your main code here, to run repeatedly:
  int EnableResultD2 = digitalRead(2);
  int PhotoResistorRresultD4 = digitalRead(4);
  
 //read enable and photo resistor signals
  Serial.print("Enable ON: ");
  Serial.println(EnableResultD2);
  Serial.print("Photo resistor ON: ");
  Serial.println(PhotoResistorRresultD4);
  
  delay(1000);
 // if ( resultD2 >= 1)
  if ( ( PhotoResistorRresultD4 == 0 ) && (EnableResultD2 == 1 ) )
  {
    Serial.println("Alert!");
    //digitalWrite(12, HIGH); //set buzzer ON
    tone(22, 300, 250); // Plays 300Hz tone for 0.250 seconds

  }

  if ( PhotoResistorRresultD4 == 1 )
  {
    Serial.println("Safe.");
  }

}
*/