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Ag xtr 26: 4-20mA example

Basic example that turns on, reads and turns off the 4-20mA interface. 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 Terminal box probe - 1 Custom sensor with 4-20 mA interface

Notes

- This example is only valid for Waspmote v15

Code

/*
----------- [Ag_xtr_26] - 4-20mA example --------------------
Explanation: Basic example that turns on, reads and turns off the
sensor. Measured parameters are stored in the corresponding class
variables and printed by the serial monitor.
Measured parameters:
- sensor current
Copyright (C) 2019 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 .
Version: 3.0
Design: David Gascón
Implementation: P.Moreno, J.Siscart
*/
// Put your libraries here (#include ...)
#include <WaspSensorXtr.h>
/*
SELECT THE RIGHT SOCKET FOR EACH SENSOR.
Possible sockets for this sensor are:
- XTR_SOCKET_B _________
- XTR_SOCKET_F |---------|
| A B C |
|_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
*/
// object to manage _4_20mA
_4_20mA my_4_20mA(XTR_SOCKET_B);
void setup()
{
USB.println(F("4-20mA example for Smart Agriculture Xtreme"));
USB.println();
// It is mandatory to turn ON the board
SensorXtr.ON();
}
void loop()
{
// Turn ON the sensor
my_4_20mA.ON();
// Read the sensor
my_4_20mA.read();
// Turn off the sensor
my_4_20mA.OFF();
// Print information
USB.println(F("---------------------------"));
USB.print(F("4-20mA sensor current: "));
USB.printFloat(my_4_20mA.current, 3);
USB.println(F("mA"));
delay(5000);
}

Output

J#
4-20mA example for Smart Agriculture Xtreme
---------------------------
4-20mA sensor current: 19.880mA
---------------------------
4-20mA sensor current: 19.879mA
---------------------------
4-20mA sensor current: 14.412mA
---------------------------
4-20mA sensor current: 14.414mA
Last modified 2yr ago