Replace Old library with new

Air quality sensor library was outdated

libraries/Grove_Air_quality_Sensor/.gitattributes

+# Auto detect text files and perform LF normalization
+* text=auto
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libraries/Grove_Air_quality_Sensor/.gitignore

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+## Eclipse
+#################
+
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+.project
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libraries/Grove_Air_quality_Sensor/.gitlab-ci.yml

+build:
+  tags:
+    - nas
+  script:
+    - wget -c https://files.seeedstudio.com/arduino/seeed-arduino-ci.sh
+    - chmod +x seeed-arduino-ci.sh
+    - bash $PWD/seeed-arduino-ci.sh test
+

libraries/Grove_Air_quality_Sensor/.travis.yml

+
+language: generic
+dist: bionic
+sudo: false
+cache:
+  directories:
+    - ~/arduino_ide
+    - ~/.arduino15/packages/
+
+before_install:
+   - wget -c https://files.seeedstudio.com/arduino/seeed-arduino-ci.sh
+
+script:
+   - chmod +x seeed-arduino-ci.sh
+   - cat $PWD/seeed-arduino-ci.sh
+   - bash $PWD/seeed-arduino-ci.sh test
+
+notifications:
+  email:
+    on_success: change
+    on_failure: change

libraries/Grove_Air_quality_Sensor/Air_Quality_Sensor.cpp

+/*
+    Air_Quality_Sensor.cpp
+    Source file 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"
+
+const int AirQualitySensor::FORCE_SIGNAL   = 0;
+const int AirQualitySensor::HIGH_POLLUTION = 1;
+const int AirQualitySensor::LOW_POLLUTION  = 2;
+const int AirQualitySensor::FRESH_AIR      = 3;
+
+AirQualitySensor::AirQualitySensor(int pin)
+    : _pin(pin), _voltageSum(0), _volSumCount(0) {
+    // do nothing
+}
+
+bool AirQualitySensor::init(void) {
+    int initVoltage = analogRead(_pin);
+
+    if (10 < initVoltage && initVoltage < 798) {
+        _currentVoltage = initVoltage;
+        _lastVoltage = _currentVoltage;
+
+        _standardVoltage = initVoltage;
+        _lastStdVolUpdated = millis();
+
+        return true;
+    } else {
+        return false;
+    }
+}
+
+int AirQualitySensor::slope(void) {
+    _lastVoltage = _currentVoltage;
+    _currentVoltage = analogRead(_pin);
+
+    _voltageSum += _currentVoltage;
+    _volSumCount += 1;
+
+    updateStandardVoltage();
+    if (_currentVoltage - _lastVoltage > 400 || _currentVoltage > 700) {
+        return AirQualitySensor::FORCE_SIGNAL;
+    } else if ((_currentVoltage - _lastVoltage > 400 && _currentVoltage < 700)
+               || _currentVoltage - _standardVoltage > 150) {
+        return AirQualitySensor::HIGH_POLLUTION;
+    } else if ((_currentVoltage - _lastVoltage > 200 && _currentVoltage < 700)
+               || _currentVoltage - _standardVoltage > 50) {
+        return AirQualitySensor::LOW_POLLUTION;
+    } else {
+        return AirQualitySensor::FRESH_AIR;
+    }
+
+    return -1;
+}
+
+int AirQualitySensor::getValue(void) {
+    return _currentVoltage;
+}
+
+void AirQualitySensor::updateStandardVoltage(void) {
+    if (millis() - _lastStdVolUpdated > 500000) {
+        _standardVoltage = _voltageSum / _volSumCount;
+        _lastStdVolUpdated = millis();
+
+        _voltageSum = 0;
+        _volSumCount = 0;
+    }
+}

libraries/Grove_Air_quality_Sensor/Air_Quality_Sensor.h

+/*
+    Air_Quality_Sensor.h
+    Header file 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.
+*/
+#ifndef __AIR_QUALITY_SENSOR_H__
+#define __AIR_QUALITY_SENSOR_H__
+
+#include "Arduino.h"
+
+class AirQualitySensor {
+  public:
+    AirQualitySensor(int pin);
+
+    bool init(void);
+    int  slope(void);
+    int  getValue(void);
+
+    static const int FORCE_SIGNAL;
+    static const int HIGH_POLLUTION;
+    static const int LOW_POLLUTION;
+    static const int FRESH_AIR;
+
+  protected:
+    int  _pin;
+
+    int  _lastVoltage;
+    int  _currentVoltage;
+    int  _standardVoltage;
+
+    long _voltageSum;
+    int  _volSumCount;
+    long _lastStdVolUpdated;
+
+    void updateStandardVoltage(void);
+};
+
+#endif // __AIR_QUALITY_SENSOR_H__

libraries/Grove_Air_quality_Sensor/README.md

+## Grove Air Quality Sensor  [![Build Status](https://travis-ci.com/Seeed-Studio/Grove_Air_quality_Sensor.svg?branch=master)](https://travis-ci.com/Seeed-Studio/Grove_Air_quality_Sensor)
+  [![Build Status](https://travis-ci.com/Seeed-Studio/Grove_Air_quality_Sensor.svg?branch=master)](https://travis-ci.com/Seeed-Studio/Grove_Air_quality_Sensor)-------------------------------------------------------------
+![](https://statics3.seeedstudio.com/images/101020021%201.jpg)
+
+[Grove Air Quality Sensor](https://www.seeedstudio.com/Grove-Air-quality-sensor-p-1065.html)
+
+This sensor is designed for comprehensive monitoring of indoor air conditions.
+It's responsive to a wide scope of harmful gases such as carbon monoxide, alcohol, acetone, thinner, formaldehyde and so on.
+Due to the measuring mechanism, this sensor can not output specific data to describe target gases' concentrations quantitatively.
+But it's still competent enough to be used in applications that require only qualitative results, like auto refresher sprayers and auto air cycling systems.
+
+For more information, please refer to the [wiki page][1]
+
+----
+This software is written by Bruce Qin for Seeed Studio<br>
+and is licensed under [The MIT License](http://opensource.org/licenses/mit-license.php). Check license.txt for more information.<br>
+
+Contributing to this software is warmly welcomed. You can do this basically by<br>
+[forking](https://help.github.com/articles/fork-a-repo), committing modifications and then submitting a [pull request](https://help.github.com/articles/using-pull-requests) (follow the links above<br>
+for operating guide). Adding change log and your contact into file header is encouraged.<br>
+Thanks for your contribution.
+
+Seeed Studio is an open hardware facilitation company based in Shenzhen, China. <br>
+Benefiting from local manufacturing power and a convenient global logistic system, <br>
+we integrate resources to serve a new era of innovation. Seeed also works with <br>
+global distributors and partners to push the open hardware movement.<br>
+
+
+[1]:http://wiki.seeedstudio.com/Grove-Air_Quality_Sensor_v1.3
+
+
+[![Analytics](https://ga-beacon.appspot.com/UA-46589105-3/Grove_Air_quality_Sensor)](https://github.com/igrigorik/ga-beacon)

libraries/Grove_Air_quality_Sensor/examples/Grove_Air_Quality_Sensor/Grove_Air_Quality_Sensor.ino

+/*
+    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);
+
+void setup(void) {
+    Serial.begin(9600);
+    while (!Serial);
+
+    Serial.println("Waiting sensor to init...");
+    delay(20000);
+
+    if (sensor.init()) {
+        Serial.println("Sensor ready.");
+    } else {
+        Serial.println("Sensor ERROR!");
+    }
+}
+
+void loop(void) {
+    int quality = sensor.slope();
+
+    Serial.print("Sensor value: ");
+    Serial.println(sensor.getValue());
+
+    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);
+}

libraries/Grove_Air_quality_Sensor/keywords.txt

+  
+#######################################
+# Syntax Coloring Map For 
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+i	KEYWORD1
+vol_standard	KEYWORD1
+init_voltage	KEYWORD1
+first_vol	KEYWORD1
+last_vol	KEYWORD1
+temp	KEYWORD1
+counter	KEYWORD1
+timer_index	KEYWORD1
+error	KEYWORD1
+
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+init	KEYWORD2
+slope	KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################
\ No newline at end of file

libraries/Grove_Air_quality_Sensor/library.properties

+name=Grove - Air quality sensor
+version=1.0.1
+author=Seeed Studio
+maintainer=Seeed Studio <techsupport@seeed.cc>
+sentence=Arduino library to control Grove Air Quality Sensor.
+paragraph=Arduino library to control Grove Air Quality Sensor.
+category=Sensors
+url=https://github.com/Seeed-Studio/Grove_Air_quality_Sensor
+architectures=avr
+includes=AirQuality.h

libraries/Grove_Air_quality_Sensor/license.txt

+The MIT License (MIT)
+
+Copyright (c) 2014 Seeed Technology Inc.
+
+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.
\ No newline at end of file