SX 14: Current Supply

This example shows how to set the maximum Over Current Protection (OCP) level. By default, the OCP is disabled. This example also permits to get the OCP current value in mA units.

Required Materials

1 x Waspmote PRO 1 x Battery 1 x MiniUSB wire 1 x SX1272 module (LoRa)

Notes

- The SX1272 module is provided with a special 4.5 dBi antenna, which enables maximum range. The only exception is Smart Parking; in this case the antenna is smaller, 0 dBi, to fit inside the enclosure. - It is not recommended to work without an antenna screwed to the module. The module could be damaged due to RF reflections. - The SX1272 module can only be used in special Waspmote units which have been modified to drive the SPI pins to SOCKET0. (only SOCKET0 is available for SX1272) - This module does not save the configuration. So, the network settings as the mode or the channel MUST be configured every time it is switched on. - This example can be executed in Waspmote v12 and Waspmote v15

Code

/*  
 *  ------ [SX_14] - Get Current -------- 
 *
 *  Explanation: This example shows how to set the maximum Over Current 
 *  Protection (OCP) level. By default, the OCP is disabled. This example 
 *  also permits to get the OCP current value in mA units.
 *  
 *  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 .  
 *  
 *  Version:           0.1
 *  Design:            David Gascón 
 *  Implementation:    Covadonga Albiñana, Yuri Carmona
 */

// Put your libraries here (#include ...)
#include <WaspSX1272.h>

// status variable
int8_t e;


void setup()
{
  // init USB port
  USB.ON();
  USB.println(F("SX_14 example"));
  USB.println(F("Semtech SX1272 module. Current supply configuration"));

  // init SX1272 module  
  sx1272.ON();
  
  /* DEFAULT:
   * By default, after switching ON the module, it works  
   * with NO Over Current Protection to ensure better work
   */

  // Set Maximum allowed Current Supply: from 0x00 (45 mA) to 0x1B (240 mA)
  e = sx1272.setMaxCurrent(0x17);
  USB.print(F("Setting Maximum Current Supply: state ")); 
  USB.println(e);

  delay(1000);
  USB.println(F("Configuration finished"));  

}


void loop()
{
  // put your main code here, to run repeatedly:
  e = sx1272.getMaxCurrent();

  // Check status
  if( e == 0 ) 
  { 
    USB.print("Getting Maximum Current Supply --> OK.  ");  

    USB.print(F("Maximum current supply (mA)= "));
    USB.println(sx1272._maxCurrent,DEC); 
  }
  else 
  {
    USB.println(F("ERROR getting Maximum Current Supply"));
  } 

  delay(1000);
}

Output

H#
SX_14 example
Semtech SX1272 module. Current supply configuration
Setting Maximum Current Supply: state 0
Configuration finished
Getting Maximum Current Supply --> OK. Maximum current supply (mA)= 200
Getting Maximum Current Supply --> OK. Maximum current supply (mA)= 200
Getting Maximum Current Supply --> OK. Maximum current supply (mA)= 200
Getting Maximum Current Supply --> OK. Maximum current supply (mA)= 200
...