Update AirSensor_Test to use better library

sketch_main/AirSensor_Test/AirSensor_Test.ino

-#include"AirQuality.h"
-#include"Arduino.h"
+/*
+    Grove_Air_Quality_Sensor.ino
+    Demo for Grove - Air Quality Sensor.
+    Copyright (c) 2019 seeed technology inc.
+    Author    : Lets Blu
+    Created Time : Jan 2019
+    Modified Time:
+    The MIT License (MIT)
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+    The above copyright notice and this permission notice shall be included in
+    all copies or substantial portions of the Software.
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+    THE SOFTWARE.
+*/
+#include "Air_Quality_Sensor.h"
 
+AirQualitySensor sensor(A0);
 
-static int mydata = -1;
-static int data2 = -1;
-AirQuality airqualitysensor;
-
-void setup() {
-  // put your setup code here, to run once:
+void setup(void) {
     Serial.begin(9600);
-    airqualitysensor.init(A0);
+    while (!Serial);
+
+    Serial.println("Waiting sensor to init...");
+    delay(20000);
 
+    if (sensor.init()) {
+        Serial.println("Sensor ready.");
+    } else {
+        Serial.println("Sensor ERROR!");
+    }
 }
 
-void loop() {
-  // put your main code here, to run repeatedly:
-    mydata=airqualitysensor.slope();
-    //int16_t t = mydata;
+void loop(void) {
+    int quality = sensor.slope();
 
-    delay(1000);
-}
+    Serial.print("Sensor value: ");
+    Serial.println(sensor.getValue());
 
-ISR(TIMER2_OVF_vect){
-    if(airqualitysensor.counter==122){//set 2 seconds as a detected duty{
-        airqualitysensor.last_vol=airqualitysensor.first_vol;
-        airqualitysensor.first_vol=analogRead(A0);
-        airqualitysensor.counter=0;
-        airqualitysensor.timer_index=1;
-        PORTB=PORTB^0x20;
-    }else{
-        airqualitysensor.counter++;
+    if (quality == AirQualitySensor::FORCE_SIGNAL) {
+        Serial.println("High pollution! Force signal active.");
+    } else if (quality == AirQualitySensor::HIGH_POLLUTION) {
+        Serial.println("High pollution!");
+    } else if (quality == AirQualitySensor::LOW_POLLUTION) {
+        Serial.println("Low pollution!");
+    } else if (quality == AirQualitySensor::FRESH_AIR) {
+        Serial.println("Fresh air.");
     }
+
+    delay(1000);
 }
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