unable to work with nrf24l01 on Edison

[AC22]

Hi,

I've been trying to connect a nrf24l01 module to a edison breakout board but unfortunately when I try to run a node based example I always get a Segmentation fault error.

Below is the code I use:

var m = require('mraa');

var nrf = require('jsupm_nrf24l01');

// setup the rf unit with configurable pin options:

var comm = new nrf.NRF24L01(9,23);

// debug:

//console.log(nrf);

//console.log(comm);

var running = 0,

localAddress = [], // ??? [0x01, 0x01, 0x01, 0x01, 0x01]

broadCastaddress = [], // ?? [0x01, 0x01, 0x01, 0x01, 0x01] ,

sigHandler = function(sig){

var msg = "got signal: ";

console.log(msg,sig);

running = 1;

},

nrf_handler = function(){

var msg = "recieved:: ";

console.log(msg,nrf.m_rxBuffer[0]);

}

/* reference: upm/nrf24l01-receiver.cxx at master · intel-iot-devkit/upm · GitHub

comm = new upm::NRF24L01(7, 8);

comm->setSourceAddress ((uint8_t *) local_address);

comm->setDestinationAddress ((uint8_t *) broadcast_address);

comm->setPayload (MAX_BUFFER);

comm->configure ();

comm->setSpeedRate (upm::NRF_250KBPS);

comm->setChannel (99);

comm->dataRecievedHandler = nrf_handler;

*/

comm.setSourceAddress(localAddress);

comm.setDestinationAddress(broadCastaddress);

comm.setPayload(16);

comm.configure();

comm.setSpeedRate(nrf.NRF_250KBPS);

comm.setChannel(99);

comm.dataRecievedHandler = sigHandler;

console.log(comm);

Can anyone help me with this issue? Thanks in advance

[Carlos_M_Intel]

Hi Rubik

I found this thread: with your same issue, in that case intel_dan suggested to use the following code:

var m = require('mraa');

var nrf = require('jsupm_nrf24l01');

// setup the rf unit with configurable pin options:

var comm = new nrf.NRF24L01(7,8);

// debug:

//console.log(nrf);

//console.log(comm);

var running = 0,

localAddress = [], // ??? [0x01, 0x01, 0x01, 0x01, 0x01]

broadCastaddress = [], // ?? [0x01, 0x01, 0x01, 0x01, 0x01] ,

sigHandler = function(sig){

var msg = "got signal: ";

console.log(msg,sig);

running = 1;

},

nrf_handler = function(){

var msg = "recieved:: ";

console.log(msg,nrf.m_rxBuffer[0]);

}

/* reference: upm/nrf24l01-receiver.cxx at master · intel-iot-devkit/upm · GitHub

comm = new upm::NRF24L01(7, 8);

comm->setSourceAddress ((uint8_t *) local_address);

comm->setDestinationAddress ((uint8_t *) broadcast_address);

comm->setPayload (MAX_BUFFER);

comm->configure ();

comm->setSpeedRate (upm::NRF_250KBPS);

comm->setChannel (99);

comm->dataRecievedHandler = nrf_handler;

*/

comm.setSourceAddress(new ArrayBuffer(localAddress));

comm.setDestinationAddress(broadCastaddress);

comm.setPayload(16);

comm.configure();

comm.setSpeedRate(nrf.NRF_250KBPS);

comm.setChannel(99);

comm.dataRecievedHandler = sigHandler;

console.log(comm);

I tested and did not have the error as before (I was having the same error that you.) But I'm not sure if it's working fine because I don't have a shield to test it.

I was looking in the examples of UPM for Javascript and did not find this example. I found another one but is in C++ you can try with this one too. https://github.com/intel-iot-devkit/upm/tree/master/examples/c%2B%2B upm/examples/c++ at master · intel-iot-devkit/upm · GitHub

Regards;

CMata

[FDuig]

I tried exactly that code and a simplified version as follows:

// -- start code

// Simple test program for the NRF24L01 on the Galileo 2

var m=require('mraa'); var nrf=require('jsupm_nrf24l01'); console.log('MRAA version: ' + m.getVersion()); var comm = new nrf.NRF24L01(8,9); SourceAddress = [1,2,3,4,5]; comm.setSourceAddress(new ArrayBuffer(SourceAddress)); console.log('Done setting address');// --- end code

This produces an output as follows

MRAA version: v0.6.2

[11568.327992] node[241]: segfault at 0 ip b76770ee sp bfe9abc0 error ffff0004 in jsupm_nrf24l01.node[b7670000+1d000]

The hardware is a Galileo Gen 2 board with a fresh install of the IOT dev kit.

[AC22]

Hi CMata,

Thanks for the quick reply.

I've tried to work with the C++ example but I have 2 issues:

1. I do not know hot to compile it as I'm working directly on Intel Edison, through SSH and I do not know all the parameters required by g++ to compile and link mraa and upm libraries

2. I'm using the Mini Breakout board and onthis one the CE and CSN pins are not 7 and 8 ... I'm not sure which ones are but I assumed they are MRAA-9 and MRAA-23, as I deducted from the ediosn pinout table

Regards,

Rubik

[Carlos_M_Intel]

Hi Rubik,

In order to compile the UPM examples for C++ you have to do something like the following:

Let's say you are going to use the https://github.com/intel-iot-devkit/upm/blob/master/examples/c%2B%2B/nrf24l01-broadcast.cxx Broadcast.cxx example. Once you have the code in your board you need to run:

root@edison:~# g++ broadcast.cxx -o output -lupm-nrf24l01 -I /usr/include/upm

And for running the executable:

root@edison:~# ./output

About your second question, do you want to know which is the physical pin in the Edison Module that is connected to the pins 7 and 8 of the Arduino Expansion Board? If this is the case the pins for 7 and 8 are:

32 and 34, GP48 and GP49 , J19 - pin 6 and J20 - pin 6.

Arduino Expansion Board pin

Pin NumberLinux PinMini Breakout Board pin732GP48 J19 - pin 6834GP49 J20 - pin 6

http://download.intel.com/support/edison/sb/edisonmodule_hg_331189004.pdf Edison Compute Module - Hardware Guide

http://download.intel.com/support/edison/sb/edisonbreakout_hg_331190006.pdf Breakout Board - Hardware Guide

http://download.intel.com/support/edison/sb/edisonarduino_hg_331191007.pdf Arduino Expansion Board - Hardware Guide

Kind Regards,

Charlie

[SSara9]

I was trying to compile this and was getting reference error on all nrf24l01 functions.

When I applied your solution I got:

g++ broadcast.cxx -o output -lupm-nrf24l01 -I /usr/include/upm

/tmp/ccdqB9Zu.o: In function `main':

broadcast.cxx:(.text+0x3ae): undefined reference to `upm::NRF24L01::~NRF24L01()'

collect2: error: ld returned 1 exit status

[Carlos_M_Intel]

Hi sulejmansarajlija,

It could be related with your image, mraa or upm version.

For this I suggest you to use the latest image in your board and to update the mraa and upm version you have installed on the board.

Regards,

Charlie

[SSara9]

Hi CMata_Intel , I think it was version mismatch. Can somebody here help me with pins on Arduino Edison breakout board. Can't figure out for MISO, MOSI, SCK, CE, CS.

[Carlos_M_Intel]

Hi sulejmansarajlija,

The pins for SPI on the Arduino Expansion Board are:

PinDefinitionIO10CSIO11 MISOIO12 MOSIIO13 SCK

Take a look at the hardware guides of:

http://download.intel.com/support/edison/sb/edisonarduino_hg_331191007.pdf Arduino Expansion Board

http://download.intel.com/support/edison/sb/edisonmodule_hg_331189004.pdf Compute Module

Regards,

Charlie