Development

Sensors / Events Board:

» Ev 07: Socket 7 PIR Sensor

In this example we turn on the Events Board v20 waiting for an interurption from the PIR sensor, placed on socket 7, printing a message when received.

Required Materials

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

Notes

* Remember to turn on the manual switch for socket 7 in the Events 2.0 Sensor Board

Code

/*  
 *  ------ [Ev_7] - Socket 7 Reading for Events v20-------- 
 *  
 *  Explanation: Turn on the Events Board v20 waiting for an interruption
 *  from the PIR sensor, placed on socket 7, printing a message when received
 *  
 *  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 Gascon
 *  Implementation:    Manuel Calahorra
 */

#include <WaspSensorEvent_v20.h>

// 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();
  
  // Firstly, wait for signal stabilization  
  while( digitalRead(DIGITAL5) == 1 )
  {    
    USB.println(F("...wait for stabilization"));
    delay(1000);
  }

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

}


void loop()
{
  ///////////////////////////////////////
  // 1. Read the sensor voltage output
  ///////////////////////////////////////

  // Read the sensor voltage output
  value = SensorEventv20.readValue(SENS_SOCKET7);

  // 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();  

  // In case the interruption came from socket 7
  if( SensorEventv20.intFlag & SENS_SOCKET7)
  {
    USB.println(F("-----------------------------"));
    USB.println(F("Interruption from socket 7"));
    USB.println(F("-----------------------------"));
  }

  // Printing and enabling interruptions
  USB.println(F("Presence detected\n"));   

  // User should implement some warning
  // In this example, now wait for signal
  // stabilization to generate a new interruption
  while( digitalRead(DIGITAL5) == 1 )
  {    
    USB.println(F("...wait for stabilization"));
    delay(1000);
  }

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

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

}

Output

E#
start
...wait for stabilization
...wait for stabilization
...wait for stabilization
...wait for stabilization
...wait for stabilization
...wait for stabilization
...wait for stabilization
Sensor output: 0.0000000000 Volts
enter deep sleep
wake up

-----------------------------
Interruption from socket 7
-----------------------------
Presence detected

...wait for stabilization
...wait for stabilization
...wait for stabilization
...wait for stabilization
...wait for stabilization
...wait for stabilization
...wait for stabilization
...wait for stabilization
...wait for stabilization
...wait for stabilization
...wait for stabilization
...wait for stabilization
...wait for stabilization
Sensor output: 0.0000000000 Volts
enter deep sleep
wake up

-----------------------------
Interruption from socket 7
-----------------------------
Presence detected

...wait for stabilization
...wait for stabilization
...wait for stabilization

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