Wireless nRF24L01+ sniffer for MySensors

[Sparkman]

@Yveaux said:

Very glad to hear that it's working now!

The LED_SUPPORTED being defined or not should only make a difference in code size, nothing else. The LED option was added after the sniffer was completely functional as some low-level indication of its status. It should work independent of LEDs being connected or not.

That's what I had thought as well, so not sure why it started working.

@Yveaux said:

You're welcome! At least now I know the Mega's are also supported ;-)

And the Pro Mini too!

Cheers
Al

[Sparkman]

In case anyone else is interested, I updated the sketch to work with a 20x4 LCD screen so that you can see how many packets have been captured. I used this LCD screen connected to the I2C interface. Make sure you get the correct LCD libraries for it as the default LCD libraries don't work with it. There's a link for them on the eBay page.

EDIT: There seems to be an issue capturing packets if it's also connected to the nrf24sniff program. It works fine standalone and also when BINARY_OUTPUT is undefined and talking to the Serial Monitor. I'l need to do more troubleshooting as to why.

Cheers
Al

/*
  NRF24_Sniff - An Arduino sketch to promiscuous capture all wireless
                traffic generated by Nordic Semi. NRF24L01+ modules.

  Created by Ivo Pullens, Emmission, 2014 -- www.emmission.nl
  Updated by Sparkman, 2015 - added LCD support

  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/>.
*/   
 
#include <Arduino.h>
#include <SPI.h>
#include <CircularBuffer.h>
#include <RF24.h>
#include <RF24_config.h>

#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#define LED_SUPPORTED
#define LCD_SUPPORTED

// Hardware configuration
#define RF_CE_PIN                      (9)
#define RF_CS_PIN                      (10)
#define RF_IRQ_PIN                     (2)
#define RF_IRQ                         (RF_IRQ_PIN-2)                                           // Usually the interrupt = pin -2 (on uno/nano anyway)

#ifdef LED_SUPPORTED
	#define LED_PIN_LISTEN         (A0)
	#define LED_PIN_RX             (A1)
	#define LED_PIN_TX             (A2)
	#define LED_PIN_CONFIG         (A3)
	#define LED_PIN_BUFF_FULL      (A4)
#endif

#ifdef LCD_SUPPORTED
	LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 20 chars and 4 line display
#endif

static uint32_t PacketCount = 0;
static uint8_t lostPacketCount = 0;

#define RF_MAX_ADDR_WIDTH              (5)                                                      // Maximum address width, in bytes. MySensors use 5 bytes for addressing, where lowest byte is for node addressing.
#define MAX_RF_PAYLOAD_SIZE            (32)
#define SER_BAUDRATE                   (115200)
#define PACKET_BUFFER_SIZE             (30)                                                     // Maximum number of packets that can be buffered between reception by NRF and transmission over serial port.
#define PIPE                           (0)                                                      // Pipe number to use for listening

// Startup defaults until user reconfigures it
#define DEFAULT_RF_CHANNEL             (76)                                                     // 76 = Default channel for MySensors.
#define DEFAULT_RF_DATARATE            (RF24_250KBPS)                                           // Datarate
#define DEFAULT_RF_ADDR_WIDTH          (RF_MAX_ADDR_WIDTH)                                      // We use all but the lowest address byte for promiscuous listening. First byte of data received will then be the node address.
#define DEFAULT_RF_ADDR_PROMISC_WIDTH  (DEFAULT_RF_ADDR_WIDTH-1)
#define DEFAULT_RADIO_ID               ((uint64_t)0xA8A8E1FC00LL)                               // 0xA8A8E1FC00LL = MySensors v2 (1.4) default
#define DEFAULT_RF_CRC_LENGTH          (2)                                                      // Length (in bytes) of NRF24 CRC
#define DEFAULT_RF_PAYLOAD_SIZE        (MAX_RF_PAYLOAD_SIZE)                                    // Define NRF24 payload size to maximum, so we'll slurp as many bytes as possible from the packet.

// If BINARY_OUTPUT is defined, this sketch will output in hex format to the PC.
// If undefined it will output text output for development.
#define BINARY_OUTPUT

#include "NRF24_sniff_types.h"

#ifndef BINARY_OUTPUT
	int my_putc( char c, FILE *t )
	{
	  Serial.write( c );
	}
#endif

// Set up nRF24L01 radio on SPI bus plus CE/CS pins
static RF24 radio(RF_CE_PIN, RF_CS_PIN);

static NRF24_packet_t bufferData[PACKET_BUFFER_SIZE]; 
static CircularBuffer<NRF24_packet_t> packetBuffer(bufferData, sizeof(bufferData)/sizeof(bufferData[0]));
static Serial_header_t serialHdr;
static volatile Serial_config_t conf = {
	DEFAULT_RF_CHANNEL,     DEFAULT_RF_DATARATE, DEFAULT_RF_ADDR_WIDTH,
	DEFAULT_RF_ADDR_PROMISC_WIDTH,  DEFAULT_RADIO_ID,    DEFAULT_RF_CRC_LENGTH,
	DEFAULT_RF_PAYLOAD_SIZE
	};

#define GET_PAYLOAD_LEN(p) ((p->packet[conf.addressLen-conf.addressPromiscLen] & 0xFC) >> 2) // First 6 bits of nRF header contain length.


inline static void dumpData(uint8_t* p, int len)
{
	#ifndef BINARY_OUTPUT
		while (len--) { printf("%02x", *p++); }
		Serial.print(' ');
	#else
		Serial.write(p, len);
	#endif
}

static void handleNrfIrq()
{
	// Loop until RX buffer(s) contain no more packets.
	while (radio.available())
	{
		#ifdef LED_SUPPORTED
			digitalWrite(LED_PIN_RX, HIGH);
		#endif
		if (!packetBuffer.full())
		{
			#ifdef LED_SUPPORTED
				digitalWrite(LED_PIN_BUFF_FULL, LOW);
			#endif

			NRF24_packet_t* p = packetBuffer.getFront();
			p->timestamp = micros();  // Micros does not increase in interrupt, but it can be used.
			p->packetsLost = lostPacketCount;
			uint8_t packetLen = radio.getPayloadSize();
			if (packetLen > MAX_RF_PAYLOAD_SIZE)
				packetLen = MAX_RF_PAYLOAD_SIZE;
		  
			radio.read( p->packet, packetLen );
		      
			// Determine length of actual payload (in bytes) received from NRF24 packet control field (bits 7..2 of byte with offset 1)
			// Enhanced shockburst format is assumed!
			if (GET_PAYLOAD_LEN(p) <= MAX_RF_PAYLOAD_SIZE)
			{
				// Seems like a valid packet. Enqueue it.
				packetBuffer.pushFront(p);
				PacketCount++;
			}    
			else
			{
			// Packet with invalid size received. Could increase some counter...
			}
			lostPacketCount = 0;
		}
		else
		{
			// Buffer full. Increase lost packet counter.
			#ifdef LED_SUPPORTED
				digitalWrite(LED_PIN_BUFF_FULL, HIGH);
			#endif

			bool tx_ok, tx_fail, rx_ready;
			if (lostPacketCount < 255)
				lostPacketCount++;
			// Call 'whatHappened' to reset interrupt status.
			radio.whatHappened(tx_ok, tx_fail, rx_ready);
			// Flush buffer to drop the packet.
			radio.flush_rx();
		}
		#ifdef LED_SUPPORTED
		    digitalWrite(LED_PIN_RX, LOW);
		#endif
	}
}  

static void activateConf( void )
{
	#ifdef LED_SUPPORTED
		digitalWrite(LED_PIN_CONFIG, HIGH);
	#endif

	// Match MySensors' channel & datarate
	radio.setChannel(conf.channel);
	radio.setDataRate((rf24_datarate_e)conf.rate);

	// Disable CRC & set fixed payload size to allow all packets captured to be returned by Nrf24.
	radio.disableCRC();
	radio.setPayloadSize(conf.maxPayloadSize);

	// Configure listening pipe with the 'promiscuous' address and start listening
	radio.setAddressWidth(conf.addressPromiscLen);
	radio.openReadingPipe( PIPE, conf.address >> (8*(conf.addressLen - conf.addressPromiscLen)) );
	radio.startListening();

	// Attach interrupt handler to NRF IRQ output. Overwrites any earlier handler.
	attachInterrupt(RF_IRQ, handleNrfIrq, FALLING);    // NRF24 Irq pin is active low.

	// Initialize serial header's address member to promiscuous address.
	uint64_t addr = conf.address;  // TODO: probably add some shifting!
	for (int8_t i = sizeof(serialHdr.address)-1; i >= 0; --i)
	{
		serialHdr.address[i] = addr;
		addr >>= 8;
	}

	// Send config back. Write record length & message type
	uint8_t lenAndType = SET_MSG_TYPE(sizeof(conf), MSG_TYPE_CONFIG);
	dumpData(&lenAndType, sizeof(lenAndType));
	// Write config
	dumpData((uint8_t*)&conf, sizeof(conf) );

	#ifndef BINARY_OUTPUT
		Serial.print("Channel:     "); Serial.println(conf.channel);
		Serial.print("Datarate:    ");
		switch (conf.rate)
		{
			case 0: Serial.println("1Mb/s"); break;
			case 1: Serial.println("2Mb/s"); break;
			case 2: Serial.println("250Kb/s"); break;
		}
		Serial.print("Address:     0x");
		uint64_t adr = conf.address;
		for (int8_t i = conf.addressLen-1; i >= 0; --i)
		{
			if ( i >= conf.addressLen - conf.addressPromiscLen )
			{
				Serial.print((uint8_t)(adr >> (8*i)), HEX);
			}
			else
			{
				Serial.print("**");
			}
		}
		Serial.println("");
		Serial.print("Max payload: "); Serial.println(conf.maxPayloadSize);
		Serial.print("CRC length:  "); Serial.println(conf.crcLength);
		Serial.println("");
		 
		radio.printDetails();

		Serial.println("");
		Serial.println("Listening...");
	#endif
	#ifdef LED_SUPPORTED
		digitalWrite(LED_PIN_CONFIG, LOW);
	#endif
	#ifdef LCD_SUPPORTED
		lcd.setCursor(0, 0);
		lcd.print("CH ");
		lcd.print(conf.channel);

		switch (conf.rate)
		{
			case 0: lcd.print(" @ 1Mb/s"); break;
			case 1: lcd.print(" @ 2Mb/s"); break;
			case 2: lcd.print(" @ 250kb/s"); break;
		}
	#endif

}

void setup(void)
{
	#ifdef LED_SUPPORTED
		pinMode(LED_PIN_LISTEN,    OUTPUT);
		pinMode(LED_PIN_RX,        OUTPUT);
		pinMode(LED_PIN_TX,        OUTPUT);
		pinMode(LED_PIN_CONFIG,    OUTPUT);
		pinMode(LED_PIN_BUFF_FULL, OUTPUT);
		digitalWrite(LED_PIN_LISTEN,    LOW);
		digitalWrite(LED_PIN_RX,        LOW);
		digitalWrite(LED_PIN_TX,        LOW);
		digitalWrite(LED_PIN_CONFIG,    LOW);
		digitalWrite(LED_PIN_BUFF_FULL, LOW);
	#endif

	#ifdef LCD_SUPPORTED
		lcd.init();                      // initialize the lcd 
		lcd.backlight();
		lcd.clear();
		lcd.home();
	#endif

	Serial.begin(SER_BAUDRATE);

	#ifndef BINARY_OUTPUT
		fdevopen( &my_putc, 0);
		Serial.println("-- RF24 Sniff --");
	#endif

	radio.begin();

	// Disable shockburst
	radio.setAutoAck(false);
	radio.setRetries(0,0);

	// Configure nRF IRQ input
	pinMode(RF_IRQ_PIN, INPUT);

	#ifdef LED_SUPPORTED
		digitalWrite(LED_PIN_LISTEN, HIGH);
	#endif
	#ifdef LCD_SUPPORTED
		lcd.setCursor(0, 1);
		lcd.print(PacketCount);
		lcd.print(" Packets");
		lcd.setCursor(0, 2);
		lcd.print(lostPacketCount);
		lcd.print(" Lost Packets");
	#endif

	activateConf();
}

void loop(void)
{
	while (!packetBuffer.empty())
	{
		#ifdef LED_SUPPORTED
			digitalWrite(LED_PIN_TX, HIGH);
		#endif

		// One or more records present
		NRF24_packet_t* p = packetBuffer.getBack();
		int serialHdrLen = sizeof(serialHdr) - (conf.addressLen - conf.addressPromiscLen);
		serialHdr.timestamp   = p->timestamp;
		serialHdr.packetsLost = p->packetsLost;
	 
		// Calculate data length in bits, then round up to get full number of bytes.
		uint8_t dataLen = (    (serialHdrLen<<3)                 /* Serial packet header */
			+ ((conf.addressLen - conf.addressPromiscLen)<<3) /* NRF24 LSB address byte(s) */
			+ 9                                      /* NRF24 control field */
			+ (GET_PAYLOAD_LEN(p) << 3)                /* NRF24 payload length */
			+ (conf.crcLength << 3)                   /* NRF24 crc length */
			+ 7                                      /* Round up to full nr. of bytes */
			) >> 3;                                     /* Convert from bits to bytes */

		// Write record length & message type
		uint8_t lenAndType = SET_MSG_TYPE(dataLen, MSG_TYPE_PACKET);
		dumpData(&dataLen, sizeof(lenAndType));
		// Write serial header
		dumpData((uint8_t*)&serialHdr, serialHdrLen );
		// Write packet data
		dumpData(p->packet, dataLen - serialHdrLen);

		#ifndef BINARY_OUTPUT
			if (p->packetsLost > 0)
			{
				Serial.print(" Lost: "); Serial.print(p->packetsLost);
			}
			Serial.println(""); 
		#endif
		// Remove record as we're done with it.
		packetBuffer.popBack();
		#ifdef LED_SUPPORTED
			digitalWrite(LED_PIN_TX, LOW);
		#endif
	}

	#ifdef LCD_SUPPORTED
		lcd.setCursor(0, 1);
		lcd.print(PacketCount);
		lcd.print(" Packets");
		lcd.setCursor(0, 2);
		lcd.print(lostPacketCount);
		lcd.print(" Lost Packets");
	#endif
 
	// Test if new config comes in
	uint8_t lenAndType;
	if (Serial.available() >= sizeof(lenAndType) + sizeof(conf))
	{
		lenAndType = Serial.read();
		if ((GET_MSG_TYPE(lenAndType) == MSG_TYPE_CONFIG) && (GET_MSG_LEN(lenAndType) == sizeof(conf)))
		{
			// Disable nRF interrupt while reading & activating new configuration.
			noInterrupts();
			// Retrieve the new configuration
			uint8_t* c = (uint8_t*)(&conf);
			for (uint8_t i = 0; i < sizeof(conf); ++i)
			{
				*c++ = Serial.read();
			}
			// Clear any packets in the buffer and flush rx buffer.
			packetBuffer.clear();
			radio.flush_rx();
			// Activate new config & re-enable nRF interrupt.
			activateConf();
			interrupts();
		}
		else
		{
			#ifndef BINARY_OUTPUT
				Serial.println("Illegal configuration received!"); 
			#endif
			#ifdef LCD_SUPPORTED
				lcd.setCursor(0, 3);
				lcd.print("Illegal Config");
			#endif
		}
	}
}

[Yveaux]

It would be a noce idea to create a portable 'sniffer' which you could easily position around the house (compared to a laptop + sniffer).
If it could do charts like Wireshark, e.g.

it would be very easy to determine signal quality and the like!
Requires dissection on the sinffer, though.

[Sparkman]

@Yveaux Yes, creating a portable one is my target. I will need to learn more about the rf24 though. :wink: I also want to include a ping utility to allow coverage testing.

Cheers
Al

[marceltrapman]

So, remember that pcb I showed earlier.
This is what it looks like with a 3D printed green glow in the dark case around it :)

[maltimus]

A portable version of the nRF24L01+ sniffer could be extremely useful. Anyone know if it would be possible to combining a nRF24L01+ and an ESP8266 into an Arduino giving it the capability to transmit the nRF24L01+ data over WIFI to a computer running wireshark? I dont have the time to research the possibility right now, but will keep this in mind for the future.

[Yveaux]

@marceltrapman This thing looks psychedelic! :+1:

[Alain69]

Hello,
Great job !!! I am French so excuse my broken English. Does someone could guide me? At launch Wireshark, I have a message systematically "tvb_lenght The procedure entry point is not found in the dynamic link library C: \ Program Files (x86) \ Wireshark \ plugins \ 1.12.4 \ mysensors1.dll" then same for mysensors2, nrf24.dll, radiohead.dll. I'm sure I added DLL in Wireshark, and tried the 64b version and the 32b, under Windows 8.1. If someone has an idea, THANK YOU :)

[Sparkman]

@Alain69 Which version of WireShark are you using? Try it with the older version that's available for download. The sniffer does not work with the latest versions.

Cheers
Al

[gonzalonal]

Hi, Nice job what yoh've done here.
Awkardly, I am not able to compile the sketch. I have download the last version available form github, but when I try to compile it, the IDE hungs about 60% and nothingelse happens. The compiler log looks like this:

Utilizando biblioteca SPI en carpeta: C:\Program Files\Arduino\hardware\arduino\avr\libraries\SPI
Utilizando biblioteca CircularBuffer_Sniff en carpeta: C:\Users\arnalbago\Documents\Arduino\libraries\CircularBuffer_Sniff (legacy)
Utilizando biblioteca RF24-master en carpeta: C:\Users\arnalbago\Documents\Arduino\libraries\RF24-master (legacy)
Utilizando biblioteca RF24_Sniff en carpeta: C:\Users\arnalbago\Documents\Arduino\libraries\RF24_Sniff (legacy)

C:\Program Files\Arduino\hardware\tools\avr/bin/avr-g++ -c -g -Os -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10604 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR -IC:\Program Files\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\avr\variants\eightanaloginputs -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\SPI -IC:\Users\arnalbago\Documents\Arduino\libraries\CircularBuffer_Sniff -IC:\Users\arnalbago\Documents\Arduino\libraries\RF24-master -IC:\Users\arnalbago\Documents\Arduino\libraries\RF24_Sniff C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\NRF24_sniff.cpp -o C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\NRF24_sniff.cpp.o
C:\Program Files\Arduino\hardware\tools\avr/bin/avr-g++ -c -g -Os -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10604 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR -IC:\Program Files\Arduino\hardware\arduino\avr\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\avr\variants\eightanaloginputs -IC:\Program Files\Arduino\hardware\arduino\avr\libraries\SPI -IC:\Users\arnalbago\Documents\Arduino\libraries\CircularBuffer_Sniff -IC:\Users\arnalbago\Documents\Arduino\libraries\RF24-master -IC:\Users\arnalbago\Documents\Arduino\libraries\RF24_Sniff C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\RF24.cpp -o C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\RF24.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\SPI\SPI.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\RF24-master\RF24.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\RF24_Sniff\RF24.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\hooks.c.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\WInterrupts.c.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\wiring.c.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\wiring_analog.c.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\wiring_digital.c.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\wiring_pulse.c.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\wiring_shift.c.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\abi.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\CDC.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\HardwareSerial.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\HardwareSerial0.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\HardwareSerial1.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\HardwareSerial2.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\HardwareSerial3.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\HID.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\IPAddress.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\main.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\new.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\Print.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\Stream.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\Tone.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\USBCore.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\WMath.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\WString.cpp.o
Utilizando archivo previamente compilado: C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\core.a
C:\Program Files\Arduino\hardware\tools\avr/bin/avr-gcc -Os -Wl,--gc-sections -mmcu=atmega328p -o C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp/NRF24_sniff.cpp.elf C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\NRF24_sniff.cpp.o C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\RF24.cpp.o C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\SPI\SPI.cpp.o C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\RF24-master\RF24.cpp.o C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp\RF24_Sniff\RF24.cpp.o C:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp/core.a -LC:\Users\ARNALB~1\AppData\Local\Temp\build2068833823121923998.tmp -lm

Does anyone know what could be happening with this?
I would appreciate any help you can provide.

Thanks, regards.

[Yveaux]

@gonzalonal I reproduced compiling the latest version on Github with Arduino IDE 1.6.5.
It compiles without problems on my IDE, on Windows.
Some things you can try:

• Reinstall the Arduino IDE and/or make sure you're using 1.6.5
• Extract the NRF24 Sniffer source code to its own sketchbook location. Don't put any other stuff in there (e.g. no MySensors libraries). Point the Arduino IDE to this location (File -> Preferences -> Sketchbook location, save and restart the IDE)

Good luck!

[gonzalonal]

@Yveaux
Thanks Yveaux. Pointing the sketch path in the right direction made the trick.
Once again, thanks.

Regards.

[hoegaarden_bier]

Is there anyone who has the Wireshark dissectors for the latest 1.5 api?
Mine is complaining about "The Procedure entry point tvb_length could not be located in the DLL library libwireshark.dll"

[Yveaux]

@hoegaarden_bier use the Wireshark version as defined on my blog. Possibly the portable version of Wireshark.
Wireshark keeps changing their dissector api so sure to lack of time I stopped updating them.

[freeck]

Hi there,

The (my:blush: ) sniffer tool has trouble interpretating float values, received from temperature/humidity sensors.
The data payload indicates that the sniffer receives 5 bytes instead of the expected 4 bytes of the float32 variable, the extra byte is always a 0x01. The preceeding 4 bytes are the expected bytes of the float.
After swapping the hardware, both cpu and nrf24 , still the same result....
Integers and booleans are received OK, and my serial gateway receives the correct float values.

[Yveaux]

@freeck iirr float decoding was not implemented yet in the Wireshark dissector.

[freeck]

@Yveaux
Hi, thanks for the quick response....
But I do not understand: I get float values on my screen but the wrong interpretation.
Perhaps a better question: is there an indication when this will be solved, as I appreciate the sniffer tool very much!?

[Yveaux]

@freeck
@Yveaux said:

was not implemented yet

Maybe I should rephrase: it was implemented, but doesn't work right ;-)
See: https://github.com/Yveaux/NRF24_Sniffer/issues/2

For MySensors 2.0 the sniffer will have to be updated.
I might pick this one up along the way.

[bilbolodz]

@Yveaux said in Wireless nRF24L01+ sniffer for MySensors:

For MySensors 2.0 the sniffer will have to be updated.
Any chance for Mysensrs 2.1.1 support?

[Yveaux]

@bilbolodz not from my side anywhere soon... Just too busy...