Development

General / Interrupts:

» Int 01: Watchdog timer interrupt

This example shows how to set the watchdog timer interrupt.

Required Materials

1 x Waspmote PRO
1 x MiniUSB wire
1 x Battery
1 x Button battery

Code

/*  
 *  ------ [Int_1] Waspmote watchdog timer interrupt example -------- 
 *  
 *  Explanation: This example shows how to set the watchdog timer interrupt
 *  
 *  Copyright (C) 2013 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:            Marcos Yarza
 *  Implementation:    Marcos Yarza
 */
 
void setup()
{  
  // open serial port
  USB.ON();
  
  // print message
  USB.println(F("Waspmote watchdog timer interrupt example"));
  
}

void loop()
{
  // Go to sleep disconnecting all the switches and modules
  // After 8 seconds, Waspmote wakes up thanks to internal watchdog
  PWR.setWatchdog(WTD_ON,WTD_8S);
  
  PWR.sleep(ALL_OFF);
  
  if( intFlag & WTD_INT )
  {
      // blink LEDs
      Utils.blinkLEDs(1000);
      Utils.blinkLEDs(1000);
      Utils.blinkLEDs(1000);
      
      // print info
      USB.ON();
      USB.println(F("++++++++++++++++++++++++++++++++"));
      USB.println(F("++ Wachdog interrupt detected ++"));
      USB.println(F("++++++++++++++++++++++++++++++++")); 
      
      USB.print("intArray[WTD_POS]:");
      USB.println(intArray[WTD_POS],DEC);
      USB.print("intCounter:");
      USB.println(intCounter,DEC);
      USB.println();
      
      // clear flags
      if(intArray[WTD_POS]==1) intFlag &= ~(WTD_INT);
      intCounter--;
      intArray[WTD_POS]--;
  }

}

Output

D#
Waspmote watchdog timer interrupt example
++++++++++++++++++++++++++++++++
++ Wachdog interrupt detected ++
++++++++++++++++++++++++++++++++
intArray[WTD_POS]:1
intCounter:1

++++++++++++++++++++++++++++++++
++ Wachdog interrupt detected ++
++++++++++++++++++++++++++++++++
intArray[WTD_POS]:1
intCounter:1

...

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