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Communication / 3G + GPS:

» 3G 02: Changing power mode from ON to RF_OFF

This example shows how power off the RF circuits from 3G module

Required Materials

1 x Waspmote
1 x battery
1 x 3G + GPS module

Notes

-This example must be mastered by those users who want increase battery life reducing the power consumption of the 3G module
- 3G module must be powered with a battery
- When 3G is in use, interrupts can't be used
- This exampe can be executed in Waspmote v12 and Waspmote v15

Code

/*  
 *  ------  3G_02 - Changing power mode from ON to RF_OFF  -------- 
 *  
 *  Explanation: This example shows how power off the RF circuits 
 *  from 3G module
 *  
 *  Copyright (C) 2014 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:           1.1
 *  Design:            David Gascón 
 *  Implementation:    Alejandro Gállego
 */

#include "Wasp3G.h"

int8_t answer;

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

    // 1. activates the 3G module:
    answer = _3G.ON();
    if ((answer == 1) || (answer == -3))
    {        
        USB.println(F("3G module ready..."));

        // 2. changes the power mode from ON to OFF:
        USB.println(F("Power off the RF circuits of 3G module")); 
        USB.println(F("SIM card and functionalities without RF still active"));

        if (_3G.setMode(_3G_RF_OFF) == 1)
        {
            USB.println(F("Mode changed succesfully"));
        }
        else
        {
            USB.println(F("Error changing power mode"));
        }
    }
    else
    {
        // Problem with the communication with the 3G module
        USB.println(F("3G module not started"));
    }

    // 3. powers off the 3G module
    _3G.OFF();
}

void loop()
{
}

Output

H#
USB port started...
3G module ready...
Power off the RF circuits of 3G module
SIM card and functionalities without RF still active
Mode changed succesfully

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