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.

» 868 10b: Node search RX

This program shows how to search for a specific node inside the XBee's network. Once the node has been found a packet is sent to this node.

Required Materials

1 x Waspmote
1 x Battery
1 x MiniUSB wire
1 x XBee-868

Notes

- This example belongs to a two-code example. This is the receiving part.
- All XBee modules must be configured with the same network parameters (PANID and encryption mode)
- This example can be executed in Waspmote v12 and Waspmote v15

Code

/*  
 *  ------   [868_10b] - node search     -------- 
 *  
 *  Explanation: This program shows how to set the node identifier. 
 *	Once the node has been configured is ready to receive.
 *
 *  Copyright (C) 2015 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:           0.1 
 *  Design:            David Gascón 
 *  Implementation:    Yuri Carmona
 */
 
 #include <WaspXBee868.h>

// node ID
char nodeID[] = "node_RX";

// define variable
uint8_t error;



void setup()
{ 
  // init USB port
  USB.ON();
  USB.println(F("Node search example (RX node)"));

  //////////////////////////
  // 1. XBee set up
  //////////////////////////
  
  // 1.1. init XBee
  xbee868.ON();
      
  // 1.2. set NI (Node Identifier)
  xbee868.setNodeIdentifier( nodeID );
  
  // check the AT commmand execution flag
  if( xbee868.error_AT == 0 ) 
  {
    USB.println(F("Node ID set OK"));
  }
  else 
  {
    USB.println(F("Error calling 'setNodeIdentifier()'"));  
  }
  
  // 1.3. save XBee values in memory
  xbee868.writeValues();
  
}



void loop()
{ 
  // receive XBee packet (wait for 10 seconds)
  error = xbee868.receivePacketTimeout( 10000 );

  // check answer  
  if( error == 0 ) 
  {
    // Show data stored in '_payload' buffer indicated by '_length'
    USB.print(F("Data: "));  
    USB.println( xbee868._payload, xbee868._length);
    
    // Show data stored in '_payload' buffer indicated by '_length'
    USB.print(F("Length: "));  
    USB.println( xbee868._length,DEC);
  }
  else
  {
    // Print error message:
    /*
     * '7' : Buffer full. Not enough memory space
     * '6' : Error escaping character within payload bytes
     * '5' : Error escaping character in checksum byte
     * '4' : Checksum is not correct	  
     * '3' : Checksum byte is not available	
     * '2' : Frame Type is not valid
     * '1' : Timeout when receiving answer   
    */
    USB.print(F("Error receiving a packet:"));
    USB.println(error,DEC);     
  }

} 

Output

H#
Node search example (RX node)
Node ID set OK
Data: Message_from_TX_node
Length: 20
Data: Message_from_TX_node
Length: 20
Data: Message_from_TX_node
Length: 20
...

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