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I want to try helloworld_rx.ino and helloworld_tx.ino exemple but i got a bunch of error. I put them all in a .txt file.

I already got those libraries. I got the last version of all those librairies too.

Thank for you help.

* error arduino rf24 libraries.txt (13.94 KB - downloaded 71 times.)
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Post your code and the FIRST 10 or so lines of error, but first check the libs are in the right place the file names are correct and that you have restarted the IDE.

Mark
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All librairies are at the right place with the right names.

Code:
/*
 Copyright (C) 2012 James Coliz, Jr. <maniacbug@ymail.com>

 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 version 2 as published by the Free Software Foundation.
 */

/**
 * Simplest possible example of using RF24Network,
 *
 * RECEIVER NODE
 * Listens for messages from the transmitter and prints them out.
 */

#include <RF24Network.h>
#include <RF24.h>
#include <SPI.h>

// nRF24L01(+) radio attached using Getting Started board
RF24 radio(9,10);

// Network uses that radio
RF24Network network(radio);

// Address of our node
const uint16_t this_node = 0;

// Address of the other node
const uint16_t other_node = 1;

// Structure of our payload
struct payload_t
{
  unsigned long ms;
  unsigned long counter;
};

void setup(void)
{
  Serial.begin(57600);
  Serial.println("RF24Network/examples/helloworld_rx/");
 
  SPI.begin();
  radio.begin();
  network.begin(/*channel*/ 90, /*node address*/ this_node);
}

void loop(void)
{
  // Pump the network regularly
  network.update();

  // Is there anything ready for us?
  while ( network.available() )
  {
    // If so, grab it and print it out
    RF24NetworkHeader header;
    payload_t payload;
    network.read(header,&payload,sizeof(payload));
    Serial.print("Received packet #");
    Serial.print(payload.counter);
    Serial.print(" at ");
    Serial.println(payload.ms);
  }
}
// vim:ai:cin:sts=2 sw=2 ft=cpp



The first ten errors
libraries\RF24\RF24.cpp:9:22: error: nRF24L01.h: No such file or directory
 libraries\RF24\RF24.cpp: In member function 'uint8_t RF24::read_register(uint8_t, uint8_t*, uint8_t)':
 libraries\RF24\RF24.cpp:43: error: 'R_REGISTER' was not declared in this scope
 libraries\RF24\RF24.cpp:43: error: 'REGISTER_MASK' was not declared in this scope
 libraries\RF24\RF24.cpp: In member function 'uint8_t RF24::read_register(uint8_t)':
 libraries\RF24\RF24.cpp:57: error: 'R_REGISTER' was not declared in this scope
 libraries\RF24\RF24.cpp:57: error: 'REGISTER_MASK' was not declared in this scope
 libraries\RF24\RF24.cpp: In member function 'uint8_t RF24::write_register(uint8_t, const uint8_t*, uint8_t)':
 libraries\RF24\RF24.cpp:71: error: 'W_REGISTER' was not declared in this scope
 libraries\RF24\RF24.cpp:71: error: 'REGISTER_MASK' was not declared in this scope
 libraries\RF24\RF24.cpp: In member function 'uint8_t RF24::write_register(uint8_t, uint8_t)':
 libraries\RF24\RF24.cpp:89: error: 'W_REGISTER' was not declared in this scope
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libraries\RF24\RF24.cpp:9:22: error: nRF24L01.h: No such file or directory

This means that the compiler can not find the library. So you've installed it in the wrong directory? Have you read this: http://arduino.cc/en/Guide/Libraries
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I have to file at the good place because i can compile this exemple without error.

Quote
/*
 Copyright (C) 2011 J. Coliz <maniacbug@ymail.com>

 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 version 2 as published by the Free Software Foundation.
 */

/**
 * Example for Getting Started with nRF24L01+ radios.
 *
 * This is an example of how to use the RF24 class.  Write this sketch to two
 * different nodes.  Put one of the nodes into 'transmit' mode by connecting
 * with the serial monitor and sending a 'T'.  The ping node sends the current
 * time to the pong node, which responds by sending the value back.  The ping
 * node can then see how long the whole cycle took.
 */

#include <SPI.h>
#include "nRF24L01.h"
#include "RF24.h"
#include "printf.h"

//
// Hardware configuration
//

// Set up nRF24L01 radio on SPI bus plus pins 9 & 10

RF24 radio(9,10);

//
// Topology
//

// Radio pipe addresses for the 2 nodes to communicate.
const uint64_t pipes[2] = { 0xF0F0F0F0E1LL, 0xF0F0F0F0D2LL };

//
// Role management
//
// Set up role.  This sketch uses the same software for all the nodes
// in this system.  Doing so greatly simplifies testing. 
//

// The various roles supported by this sketch
typedef enum { role_ping_out = 1, role_pong_back } role_e;

// The debug-friendly names of those roles
const char* role_friendly_name[] = { "invalid", "Ping out", "Pong back"};

// The role of the current running sketch
role_e role = role_pong_back;

void setup(void)
{
  //
  // Print preamble
  //

  Serial.begin(57600);
  printf_begin();
  printf("\n\rRF24/examples/GettingStarted/\n\r");
  printf("ROLE: %s\n\r",role_friendly_name[role]);
  printf("*** PRESS 'T' to begin transmitting to the other node\n\r");

  //
  // Setup and configure rf radio
  //

  radio.begin();

  // optionally, increase the delay between retries & # of retries
  radio.setRetries(15,15);

  // optionally, reduce the payload size.  seems to
  // improve reliability
  //radio.setPayloadSize(smiley-cool;

  //
  // Open pipes to other nodes for communication
  //

  // This simple sketch opens two pipes for these two nodes to communicate
  // back and forth.
  // Open 'our' pipe for writing
  // Open the 'other' pipe for reading, in position #1 (we can have up to 5 pipes open for reading)

  //if ( role == role_ping_out )
  {
    //radio.openWritingPipe(pipes[0]);
    radio.openReadingPipe(1,pipes[1]);
  }
  //else
  {
    //radio.openWritingPipe(pipes[1]);
    //radio.openReadingPipe(1,pipes[0]);
  }

  //
  // Start listening
  //

  radio.startListening();

  //
  // Dump the configuration of the rf unit for debugging
  //

  radio.printDetails();
}

void loop(void)
{
  //
  // Ping out role.  Repeatedly send the current time
  //

  if (role == role_ping_out)
  {
    // First, stop listening so we can talk.
    radio.stopListening();

    // Take the time, and send it.  This will block until complete
    unsigned long time = millis();
    printf("Now sending %lu...",time);
    bool ok = radio.write( &time, sizeof(unsigned long) );
   
    if (ok)
      printf("ok...");
    else
      printf("failed.\n\r");

    // Now, continue listening
    radio.startListening();

    // Wait here until we get a response, or timeout (250ms)
    unsigned long started_waiting_at = millis();
    bool timeout = false;
    while ( ! radio.available() && ! timeout )
      if (millis() - started_waiting_at > 200 )
        timeout = true;

    // Describe the results
    if ( timeout )
    {
      printf("Failed, response timed out.\n\r");
    }
    else
    {
      // Grab the response, compare, and send to debugging spew
      unsigned long got_time;
      radio.read( &got_time, sizeof(unsigned long) );

      // Spew it
      printf("Got response %lu, round-trip delay: %lu\n\r",got_time,millis()-got_time);
    }

    // Try again 1s later
    delay(1000);
  }

  //
  // Pong back role.  Receive each packet, dump it out, and send it back
  //

  if ( role == role_pong_back )
  {
    // if there is data ready
    if ( radio.available() )
    {
      // Dump the payloads until we've gotten everything
      unsigned long got_time;
      bool done = false;
      while (!done)
      {
        // Fetch the payload, and see if this was the last one.
        done = radio.read( &got_time, sizeof(unsigned long) );

        // Spew it
        printf("Got payload %lu...",got_time);

   // Delay just a little bit to let the other unit
   // make the transition to receiver
   delay(20);
      }

      // First, stop listening so we can talk
      radio.stopListening();

      // Send the final one back.
      radio.write( &got_time, sizeof(unsigned long) );
      printf("Sent response.\n\r");

      // Now, resume listening so we catch the next packets.
      radio.startListening();
    }
  }

  //
  // Change roles
  //

  if ( Serial.available() )
  {
    char c = toupper(Serial.read());
    if ( c == 'T' && role == role_pong_back )
    {
      printf("*** CHANGING TO TRANSMIT ROLE -- PRESS 'R' TO SWITCH BACK\n\r");

      // Become the primary transmitter (ping out)
      role = role_ping_out;
      radio.openWritingPipe(pipes[0]);
      radio.openReadingPipe(1,pipes[1]);
    }
    else if ( c == 'R' && role == role_ping_out )
    {
      printf("*** CHANGING TO RECEIVE ROLE -- PRESS 'T' TO SWITCH BACK\n\r");
     
      // Become the primary receiver (pong back)
      role = role_pong_back;
      radio.openWritingPipe(pipes[1]);
      radio.openReadingPipe(1,pipes[0]);
    }
  }
}

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i find out why i got all those error

we need to add those libraries in the sketch

Code:
#include <printf.h>
#include <nRF24L01.h>

printf.h can be found in RF24.h exemple getting started. Make a new folder for this one too.

Thank you Bajdi for your fast respond and your help.

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