• State
  • Locked Locked
  • Replies 5 replies
  • Subscribers 53 subscribers
  • Views 2688 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

SmartRF Protocol Packet Sniffer for CC2541

Michael Russo1
Prodigy 80 points
Other Parts Discussed in Thread: CC2540, CC2541, CC2541DK-MINI

SmartRF Protocol Packet Sniffer

Description of Problem:

I am interested in purchasing a protocol packet sniffer capturing device,

is there source code available for the BLE CC2540 chip?

is there a CC2541 Capturing device??, Is there source code available for it?

 

is the sniffer device able to be used in such a way that it acts as a passive eavesdropping device??..

 

meaning it is not the destination of a BLE packet, but it is able to intrepret BLE packets

  • 0
    Guru 735685 points

    1. You can download and install BLE stack. There are lots of examples after installation.

    2. There is FW for CC2540 capture device. You can find the FW under C:\Program Files\Texas Instruments\SmartRF Tools\Packet Sniffer\bin\general\firmware after you install packet sniffer.

    3. Yes, the sniffer device is able to act as a passive eavesdropping device.

  • 0 in reply to YiKai Chen
    Prodigy 80 points

    I already have been using the CC2540 as a capture device. How do I use the CC2540 as passive eavesdroping device??

    My intention is to have an iphone acting as the master and a CC2541 acting as the slave, during their BLE connected session a CC2540 BLE device will capture packets being transmitted between the two.  

  • 0 in reply to Michael Russo1
    TI__Genius 15855 points

    Michael,

    In addition to what was already communicated on this forum, here are a few other thoughts:

    - do you have a TI SensorTag?  This is a CC2541-based kit that interfaces to a Master/Host BLE iPhone for test and evaluation purposes.  The BTool GUI and USB capture dongle can then be used to sniff the BLE data traffic between the Master/Host (iPhone) and Slave SensorTag. 

    - The TI CC2541 "Keyfob" called CC2541DK-MINI can also serve this purpose as does the SensorTag kit.

    -For a truly passive (eavesdropping) app, try out the LightBlue iOS app available on the App Store.  I use this often when sniffing BLE devices from my iPhone.

    Hope this helps?

    -Chris

  • 0 in reply to Chris Yorkey
    Intellectual 290 points

    I am also trying to do the same thing.  I have the USB dongle and Packet Sniffer software and it works while the 2540 is advertising and while the iPhone and 2540 are pairing.  However once the connection is established, I no longer see anything in the Packet Sniffer.

    How can I continue to see the packets being transmitted between the two devices.  I am trying to confirm the correct data is being passed back and forth between the two devices.

  • 0 in reply to Bill Tyler
    Prodigy 10 points

    Hi Bill, I experienced the same situation as you described. I solved the problem by changing the "Advertising Channel" to 39, and it only works on that channel. Hope this can also help you.