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.

» Power 04: Getting battery level

This example shows how to get the remaining battery level.

Required Materials

1 x Waspmote
1 x MiniUSB wire
1 x Battery

Notes

- WARNING: This example is suitable for rechargeable batteries only. Non-rechargeable batteries always show a plain discharge curve, so it is not possible to know how much power is left.
- This example can be executed in Waspmote v12 and Waspmote v15

Code

/*  
 *  ------ [PWR_4] Getting Battery Level Example -------- 
 *  
 *  Explanation: This example shows how to get the remaining battery 
 *  level.
 *
 *  WARNING: This example is suitable for rechargeable batteries only. 
 *  Non-rechargeable batteries always show a plain discharge curve, 
 *  so it is not possible to know how much power is left.
 *  
 *  Copyright (C) 2016 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:    Marcos Yarza
 */

char WARNING_MESSAGE[] =\
"\n-------------------------------------------------------------------\n"\
"WARNING: This example is suitable for rechargeable batteries only.\n"\
"Non-rechargeable batteries always show a plain discharge curve,\n"\
"so it is not possible to know how much power is left.\n"
"-------------------------------------------------------------------\n";
 
 
void setup()
{
  // Open the USB connection
  USB.ON();
  USB.println(F("PWR_4 example"));
  
  // show warning
  USB.println( WARNING_MESSAGE );
}



void loop()
{
  // Show the remaining battery level
  USB.print(F("Battery Level: "));
  USB.print(PWR.getBatteryLevel(),DEC);
  USB.print(F(" %"));
  
  // Show the battery Volts
  USB.print(F(" | Battery (Volts): "));
  USB.print(PWR.getBatteryVolts());
  USB.println(F(" V"));
  
  delay(5000);
}

Output

H#
PWR_4 example

-------------------------------------------------------------------
WARNING: This example is suitable for rechargeable batteries only.
Non-rechargeable batteries always show a plain discharge curve,
so it is not possible to know how much power is left.
-------------------------------------------------------------------

Battery Level: 100 % | Battery (Volts): 4.2290000915 V
Battery Level: 100 % | Battery (Volts): 4.2290000915 V
Battery Level: 100 % | Battery (Volts): 4.2290000915 V
Battery Level: 100 % | Battery (Volts): 4.2290000915 V

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