adding tests for various components

testing/bme680Test/bme680Test.ino

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+/***************************************************************************
+  This is a library for the BME680 gas, humidity, temperature & pressure sensor
+
+  Designed specifically to work with the Adafruit BME680 Breakout
+  ----> http://www.adafruit.com/products/3660
+
+  These sensors use I2C or SPI to communicate, 2 or 4 pins are required
+  to interface.
+
+  Adafruit invests time and resources providing this open source code,
+  please support Adafruit and open-source hardware by purchasing products
+  from Adafruit!
+
+  Written by Limor Fried & Kevin Townsend for Adafruit Industries.
+  BSD license, all text above must be included in any redistribution
+ ***************************************************************************/
+
+#include <Wire.h>
+#include <SPI.h>
+#include <Adafruit_Sensor.h>
+#include "Adafruit_BME680.h"
+
+#define SEALEVELPRESSURE_HPA (1013.25)
+
+Adafruit_BME680 bme0; // I2C
+Adafruit_BME680 bme1; // I2C
+
+void setup() 
+{
+  Serial.begin(9600);
+  while (!Serial);
+  Serial.println(F("BME680 test"));
+
+  // SENSOR 0 - 0X77
+  if (!bme0.begin(0x77, true))     ///< The default I2C address
+  {
+    Serial.println("Could not find a valid BME680 sensor, check wiring!");
+    while (1);
+  }
+
+  // Set up oversampling and filter initialization
+  bme0.setTemperatureOversampling(BME680_OS_8X);
+  bme0.setHumidityOversampling(BME680_OS_2X);
+  bme0.setPressureOversampling(BME680_OS_4X);
+  bme0.setIIRFilterSize(BME680_FILTER_SIZE_3);
+  bme0.setGasHeater(320, 150); // 320*C for 150 ms
+
+
+  // SENSOR 1 - 0X76
+  if (!bme1.begin(0x76, true))     ///< The default I2C address
+  {
+    Serial.println("Could not find a valid BME680 sensor, check wiring!");
+    while (1);
+  }
+
+  // Set up oversampling and filter initialization
+  bme1.setTemperatureOversampling(BME680_OS_8X);
+  bme1.setHumidityOversampling(BME680_OS_2X);
+  bme1.setPressureOversampling(BME680_OS_4X);
+  bme1.setIIRFilterSize(BME680_FILTER_SIZE_3);
+  bme1.setGasHeater(320, 150); // 320*C for 150 ms
+}
+
+void loop() 
+{
+  if (! bme0.performReading()) 
+  {
+    Serial.println("Failed to perform reading :(");
+    return;
+  }
+
+  Serial.print("pressure 0: ");
+  Serial.print(bme0.pressure / 100.0);
+  Serial.println(" hPa");
+  Serial.print(0.5 + (bme0.pressure / (98.0665 / 10)));
+  Serial.println();
+  Serial.print("temperature 0:");
+  Serial.print(bme0.temperature);
+  Serial.println(" *C");
+  Serial.print("humidity 0: ");
+  Serial.print(bme0.humidity);
+  Serial.println(" %");
+  Serial.print("approx. altitude 0:");
+  Serial.print(bme0.readAltitude(SEALEVELPRESSURE_HPA));
+  Serial.println(" m");
+  Serial.print("voc 0: ");
+  Serial.print(bme0.gas_resistance / 1000.0);
+  Serial.println(" KOhms");
+  Serial.println();
+
+  delay(2000);
+
+
+  if (! bme1.performReading()) 
+  {
+    Serial.println("Failed to perform reading :(");
+    return;
+  }
+
+  Serial.print("pressure 1: ");
+  Serial.print(bme1.pressure / 100.0);
+  Serial.println(" hPa");
+  Serial.print(0.5 + (bme1.pressure / (98.0665 / 10)));
+  Serial.println();
+  Serial.print("temperature 1:");
+  Serial.print(bme1.temperature);
+  Serial.println(" *C");
+  Serial.print("humidity 1: ");
+  Serial.print(bme1.humidity);
+  Serial.println(" %");
+  Serial.print("approx. altitude 1:");
+  Serial.print(bme1.readAltitude(SEALEVELPRESSURE_HPA));
+  Serial.println(" m");
+  Serial.print("voc 1: ");
+  Serial.print(bme1.gas_resistance / 1000.0);
+  Serial.println(" KOhms");
+  Serial.println();
+
+  Serial.println();
+
+
+  delay(2000);
+}

testing/oxygenTest/oxygenTest.ino

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+#include <Wire.h>
+#include <Adafruit_ADS1015.h>
+
+#define AVG_WINDOW 20
+
+// channel the O2 sensor os connected to
+#define O2CHANNEL 3
+
+// The ADC input range (or gain) can be changed via the following
+// functions, but be careful never to exceed VDD +0.3V max, or to
+// exceed the upper and lower limits if you adjust the input range!
+// Setting these values incorrectly may destroy your ADC!
+//                                                                ADS1015  ADS1115
+//                                                                -------  -------
+// ads.setGain(GAIN_TWOTHIRDS);  // 2/3x gain +/- 6.144V  1 bit = 3mV      0.1875mV (default)
+// ads.setGain(GAIN_ONE);        // 1x gain   +/- 4.096V  1 bit = 2mV      0.125mV
+// ads.setGain(GAIN_TWO);        // 2x gain   +/- 2.048V  1 bit = 1mV      0.0625mV
+// ads.setGain(GAIN_FOUR);       // 4x gain   +/- 1.024V  1 bit = 0.5mV    0.03125mV
+// ads.setGain(GAIN_EIGHT);      // 8x gain   +/- 0.512V  1 bit = 0.25mV   0.015625mV
+// ads.setGain(GAIN_SIXTEEN);    // 16x gain  +/- 0.256V  1 bit = 0.125mV  0.0078125mV
+
+Adafruit_ADS1115 ads;  /* Use this for the 16-bit version */
+
+int initialO2;
+
+void setup(void)
+{
+  Serial.begin(9600);
+
+  ads.setGain(GAIN_SIXTEEN);      
+
+  ads.begin();
+
+  initialO2 = avgADC(O2CHANNEL);
+  if(initialO2 <= 100 && initialO2 >= -100)
+  {
+    Serial.println("Oxygen Sensor is not installed. Proceeding without oxygen sensing.");
+  }
+
+  Serial.println(initialO2);
+}
+
+void loop(void)
+{
+  double voltage = avgADC(O2CHANNEL);
+
+  float voltagemV = voltage * 0.0078125;
+
+  float o2 = (voltage / initialO2) * 20.9;
+
+  Serial.print("\ninital: ");
+  Serial.println(initialO2);
+  Serial.print("raw adc: ");
+  Serial.println(voltage);
+  Serial.print("mV: ");
+  Serial.println(voltagemV);
+  Serial.print("O2: ");
+  Serial.println(o2);
+
+  Serial.println("-----");
+
+  delay(1000);
+}
+
+void printRawmV(int adcNumber)
+{
+  int16_t adc = 0;
+
+  adc = ads.readADC_SingleEnded(adcNumber);
+  Serial.print("ADC"); 
+  Serial.print(adcNumber); 
+  Serial.print(": "); 
+  Serial.print(adc, HEX);
+  Serial.print(", ");
+  Serial.println(adc);
+}
+
+double avgADC(int adcNumber)
+{
+  double adc = 0;
+  double result;
+
+  adc = 0;
+
+  for (int i = 0; i <= AVG_WINDOW - 1; i++)
+  {
+    int16_t adsread = ads.readADC_SingleEnded(adcNumber);
+    adc = adc + adsread;
+    delay(10);
+  }
+
+  result = adc / AVG_WINDOW;
+
+  return result;
+}
+
+void checkAllChannels()
+{
+  double voltage0 = 0;
+  double voltage1 = 0;
+  double voltage2 = 0;
+  double voltage3 = 0;
+
+  Serial.println("\n0: ");
+  printRawmV(0);
+  voltage0 = avgADC(0);
+  Serial.println(voltage0);
+
+  Serial.println("\n1: ");
+  printRawmV(1);  
+  voltage1 = avgADC(1);
+  Serial.println(voltage1);  
+
+  Serial.println("\n2: ");
+  printRawmV(2);  
+  voltage2 = avgADC(2);
+  Serial.println(voltage2);
+
+  Serial.println("\n3: ");
+  printRawmV(3);
+  voltage3 = avgADC(3);
+  Serial.println(voltage3);
+}