Ag xtr 27: Teros 11 sensor reading

Basic example that turns on, reads and turn off the sensor. Measured parameters are stored in the corresponding class variables and printed by the serial monitor.

Required Materials

- 1 Waspmote Plug & Sense! Smart Agriculture Xtreme - 1 Teros 11

Notes

- This example is only valid for Waspmote v15

Code

/*
  ---------- - [Ag_xtr_27] - Teros 11 sensor reading --------------------

  Explanation: Basic example that turns on, reads and turn off the
  sensor. Measured parameters are stored in the corresponding class
  variables and printed by the serial monitor.

  Measured parameters:
  - Volumetric water content
  - Temperature of the soil

  Copyright (C) 2020 Libelium Comunicaciones Distribuidas S.L.
  http://www.libelium.com

  This program is free software: you can redistribute it and / or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see < http : //www.gnu.org/licenses/>.

  Version :           3.0
  Design :            David Gascón
  Implementation :    A.Falo
*/

#include <WaspSensorXtr.h>

/*
  SELECT THE RIGHT SOCKET FOR EACH SENSOR.

  Possible sockets for this sensor are:
  - XTR_SOCKET_A       _________
  - XTR_SOCKET_B      |---------|
  - XTR_SOCKET_C      | A  B  C |
  - XTR_SOCKET_D      |_D__E__F_|


  Example: a 5TM sensor on socket A will be
  [Sensor Class] [Sensor Name] [Selected socket]
  Decagon_5TM    mySensor      (XTR_SOCKET_A);

  Refer to the technical guide for information about possible combinations.
  www.libelium.com/downloads/documentation/smart_agriculture_xtreme_sensor_board.pdf
*/

//   [Sensor Class] [Sensor Name] [Selected socket]
Meter_TEROS11 mySensor(XTR_SOCKET_A);

void setup()
{
  USB.println(F("Teros 11 example"));

}

void loop()
{
  // 1. Turn ON the sensor
  mySensor.ON();

  // 2. Read the sensor
  /*
    Note: read() function does not directly return sensor values.
    They are stored in the class vector variables defined for that purpose.
    Values are available as a float value
  */
  mySensor.read();

  // 3. Turn off the sensor
  mySensor.OFF();


  // 4.1 Conversion of the RAW output sensor value into Volumetric Water Content (VWC)
  // for mineral soil using calibration equation
  float VWC = ((3.879 * pow(10, -4) * mySensor.sensorTEROS11.calibratedCountsVWC)) - 0.6956;

  // for soilless media using calibration equation
  //  float VWC = ((6.771 * pow(10, -10) * pow(mySensor.sensorTEROS11.calibratedCountsVWC, 3))
  //               - (5.105 * pow(10, -6) * pow(mySensor.sensorTEROS11.calibratedCountsVWC, 2))
  //               + (1.302 * pow(10, -2) * mySensor.sensorTEROS11.calibratedCountsVWC))
  //               - 10.848;

  // 4.2 Conversion of the RAW output sensor value into Volumetric Water Content (VWC)
  // for mineral soil using calibration equation
  float DP = pow(((2.887 * pow(10, -9) * pow(mySensor.sensorTEROS11.calibratedCountsVWC, 3))
                  - (2.080 * pow(10, -5) * pow(mySensor.sensorTEROS11.calibratedCountsVWC, 2))
                  + (5.276 * pow(10, -2) * mySensor.sensorTEROS11.calibratedCountsVWC)
                  - 43.39), 2);


  // 5. Print information
  USB.println(F("---------------------------"));
  USB.println(F("Teros-11"));
  USB.print(F("Dielectric Permittivity: "));
  USB.printFloat(DP, 2);
  USB.println();
  USB.print(F("Volumetric Water Content: "));
  USB.printFloat(VWC, 2);
  USB.println(F(" m3/m3"));
  USB.print(F("Soil temperature: "));
  USB.printFloat(mySensor.sensorTEROS11.temperature, 1);
  USB.println(F(" degrees Celsius"));
  USB.println(F("---------------------------\n"));

  delay(5000);

}