arduinoprojects

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Example1_BasicReadings.ino (1856B)

      1 /******************************************************************************
      2   Read basic CO2 and TVOCs
      3 
      4   Marshall Taylor @ SparkFun Electronics
      5   Nathan Seidle @ SparkFun Electronics
      6 
      7   April 4, 2017
      8 
      9   https://github.com/sparkfun/CCS811_Air_Quality_Breakout
     10   https://github.com/sparkfun/SparkFun_CCS811_Arduino_Library
     11 
     12   Read the TVOC and CO2 values from the SparkFun CSS811 breakout board
     13 
     14   A new sensor requires at 48-burn in. Once burned in a sensor requires
     15   20 minutes of run in before readings are considered good.
     16 
     17   Hardware Connections (Breakoutboard to Arduino):
     18   3.3V to 3.3V pin
     19   GND to GND pin
     20   SDA to A4
     21   SCL to A5
     22 
     23 ******************************************************************************/
     24 #include <Wire.h>
     25 
     26 #include "SparkFunCCS811.h" //Click here to get the library: http://librarymanager/All#SparkFun_CCS811
     27 
     28 #define CCS811_ADDR 0x5B //Default I2C Address
     29 //#define CCS811_ADDR 0x5A //Alternate I2C Address
     30 
     31 CCS811 mySensor(CCS811_ADDR);
     32 
     33 void setup()
     34 {
     35   Serial.begin(115200);
     36   Serial.println("CCS811 Basic Example");
     37 
     38   Wire.begin(); //Inialize I2C Hardware
     39 
     40   if (mySensor.begin() == false)
     41   {
     42     Serial.print("CCS811 error. Please check wiring. Freezing...");
     43     while (1)
     44       ;
     45   }
     46 }
     47 
     48 void loop()
     49 {
     50   //Check to see if data is ready with .dataAvailable()
     51   if (mySensor.dataAvailable())
     52   {
     53     //If so, have the sensor read and calculate the results.
     54     //Get them later
     55     mySensor.readAlgorithmResults();
     56 
     57     Serial.print("CO2[");
     58     //Returns calculated CO2 reading
     59     Serial.print(mySensor.getCO2());
     60     Serial.print("] tVOC[");
     61     //Returns calculated TVOC reading
     62     Serial.print(mySensor.getTVOC());
     63     Serial.print("] millis[");
     64     //Display the time since program start
     65     Serial.print(millis());
     66     Serial.print("]");
     67     Serial.println();
     68   }
     69 
     70   delay(10); //Don't spam the I2C bus
     71 }