Development v12

Warning - Product Update

All the resources present on this section belong to Waspmote v12, Waspmote Plug & Sense! v12 and Meshlium v3.8.

If you have a Waspmote v15, Waspmote Plug & Sense! v15 or Meshlium v4.0 please go to the new Development Section.

Check what is your version and what are the differences between the old and the new one in this document.

» Ev 04: Socket 4 Piezoelectric

In this example we turn on the Events 2.0 Sensor Board, configuring the threshold of the socket 4 stage, and wait for an interruption from this sensor to read its value and print the resistance of the sensor.

Required Materials

1 x Waspmote PRO
1 x Battery
1 x MiniUSB wire
1 x Events Sensor Board
1 x Piezoelectric Sensor

Notes

* Remember to turn on the manual switch for socket 4 in the Events 2.0 Sensor Board
* This example can only be executed in Waspmote v12

Code

/*  
 *  ------ [Ev_4] - Socket 4 Reading for Gases v20-------- 
 *  
 *  Explanation: Turn on the Events Board v20 configuring the threshold
 *  of the socket 4 stage and wait for an interruption from this sensor
 *  to read its value and print it
 *  
 *  Copyright (C) 2015 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:           0.2
 *  Design:            David Gascón 
 *  Implementation:    Manuel Calahorra
 */

#include <WaspSensorEvent_v20.h>

// THRESHOLD for interruption from the sensor
const float THRESHOLD = 0.3;

// Variable to store the read value
float value;


void setup()
{
  // 1. Initialization of the modules  
  
  // Turn on the USB and print a start message
  USB.ON();
  USB.println(F("start"));

  // Turn on the sensor board
  SensorEventv20.ON();

  // Turn on the RTC
  RTC.ON();

  // Configure the socket 4 threshold
  SensorEventv20.setThreshold(SENS_SOCKET4, THRESHOLD);
  
  // Enable interruptions from the board
  SensorEventv20.attachInt();
  
}
 
void loop()
{
  ///////////////////////////////////////
  // 1. Read the sensor voltage output
  ///////////////////////////////////////
  
  // 1.1. Read the sensor voltage output
  value = SensorEventv20.readValue(SENS_SOCKET4);

  // Print the info
  USB.print(F("Sensor output: "));    
  USB.print(value);
  USB.println(F(" Volts"));

  
  
  ///////////////////////////////////////
  // 2. Go to deep sleep mode  
  ///////////////////////////////////////
  USB.println(F("enter deep sleep"));
  PWR.deepSleep("00:00:00:10",RTC_OFFSET,RTC_ALM1_MODE1,SOCKET0_OFF);

  USB.ON();
  USB.println(F("wake up\n"));



  ///////////////////////////////////////
  // 3. Check Interruption Flags
  ///////////////////////////////////////
   
  // 3.1. Check interruption from Sensor Board
  if(intFlag & SENS_INT)
  {
    interrupt_function();
  }

  // 3.2. Check interruption from RTC alarm
  if( intFlag & RTC_INT )
  {   
    USB.println(F("-----------------------------"));
    USB.println(F("RTC INT captured"));
    USB.println(F("-----------------------------"));
  
    // clear flag
    intFlag &= ~(RTC_INT);
  }
  
}





/**********************************************
 *
 * interrupt_function()
 *  
 * Local function to treat the sensor interruption
 *
 *
 ***********************************************/
void interrupt_function()
{
  // Disable interruptions from the board
  SensorEventv20.detachInt();

  // Load the interruption flag
  SensorEventv20.loadInt();

  // Read the sensor
  value = SensorEventv20.readValue(SENS_SOCKET4);

  // In case the interruption came from socket 1
  if( SensorEventv20.intFlag & SENS_SOCKET4)
  {
    USB.println(F("-----------------------------"));
    USB.println(F("Interruption from socket 4"));
    USB.println(F("-----------------------------"));
  }

  // Printing and enabling interruptions

  // Print the resistance of the sensor
  USB.print(F("Voltage: "));
  USB.print(value);
  USB.println(F("V"));

  // Clean the interruption flag
  intFlag &= ~(SENS_INT);

  // Enable interruptions from the board
  SensorEventv20.attachInt();

}


Output

E#
start
Sensor output: 0.0000000000 Volts
enter deep sleep
wake up

-----------------------------
RTC INT captured
-----------------------------
Sensor output: 0.0000000000 Volts
enter deep sleep
...

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