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.

» GPRS SIM928A 03: Changing power mode from ON to minimum

This example shows how change the power mode from ON to minimum functionality

Required Materials

1 x Waspmote
1 x Battery
1 x GPRS_SIM928A module


- This example must be mastered by those users who want increase battery life reducing the power consumption of the GPRS_SIM928 module
- GPRS_SIM928 module must be powered with a battery
- When GPRS_SIM928 is in use, interrupts can't be used
- This example can be executed in Waspmote v12 and Waspmote v15


 *  ------  GPRS_SIM928A_03 - Changing power mode from ON to minimum  -------- 
 *  Explanation: This example shows how change the power mode from ON 
 *  to minimum functionality
 *  Copyright (C) 2015 Libelium Comunicaciones Distribuidas S.L. 
 *  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 
 *  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:           0.1 
 *  Design:            David Gascón 
 *  Implementation:    Alejandro Gállego

#include "WaspGPRS_SIM928A.h"
int answer;

void setup()
    // setup for Serial port over USB:
    USB.println(F("USB port started..."));

    // 1. activates the GPRS_SIM928A module:
    answer = GPRS_SIM928A.ON();
    if ((answer == 1) || (answer == -3))
        USB.println(F("GPRS_SIM928A module ready..."));
        // 2. changes the power mode from ON to OFF:
        USB.println(F("Changing power mode to minimum functionality")); 
        if (GPRS_SIM928A.setMode(GPRS_PRO_MIN) == 1)
            USB.println(F("Mode changed succesfully"));
            USB.println(F("Error changing power mode"));
        USB.println(F("GPRS_SIM928A module NOT ready..."));

void loop()


USB port started...
GPRS_SIM928A module ready...
Changing power mode to minimum functionality
Mode changed succesfully

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