PM25_LED_sound

// Adafruit PM 2.5 sensor to 3 LEDs and piezo speaker, by Kevin Walker

#include "Adafruit_PM25AQI.h"
#include <SoftwareSerial.h>
SoftwareSerial pmSerial(2, 3);
Adafruit_PM25AQI aqi = Adafruit_PM25AQI();

unsigned long lastTime = millis();
int reading = 0;

void setup() {
  Serial.begin(115200);
  while (!Serial) delay(10);
  pmSerial.begin(9600);
  if (! aqi.begin_UART(&pmSerial)) { // connect to the sensor over software serial
    Serial.println("Could not find PM 2.5 sensor!");
    while (1) delay(10);
  }
  Serial.println("PM25 found!");

  pinMode(9, OUTPUT); // green LED
  pinMode(10, OUTPUT); // amber
  pinMode(11, OUTPUT); // red
  pinMode(12, OUTPUT); // speaker
}

void loop() {

  if (millis() - lastTime > 1000) {
    PM25_AQI_Data data;
    if (! aqi.read(&data)) {
      delay(500);  // try again in a bit!
      return;
    }
    Serial.println(data.pm25_standard);
    reading = data.pm25_standard;
    if (data.pm25_standard > 100) {
      digitalWrite(9, LOW);
      digitalWrite(10, LOW);
      digitalWrite(11, HIGH);
    }
    else if (data.pm25_standard > 50) {
      digitalWrite(9, LOW);
      digitalWrite(10, HIGH);
      digitalWrite(11, LOW);
    }
    else {
      digitalWrite(9, HIGH);
      digitalWrite(10, LOW);
      digitalWrite(11, LOW);
    }
    lastTime = millis();
  }

  //data.pm25_standard

  tone(12, 10, 50) ; // Send what you get back to speaker; adjust the pulse as needed to get the range you want.

  //delay(1000);
}

void playSound() {
}