Are you sure? Last time I checked, the RPi3 could not perform realtime
(quite simple) filtering at 10 MHz. I doubt it can handle the 20 MSPS of
the 802.11.
On 12/12/2016 09:01 PM, Eric Yates wrote:
Hi Paul,
Thanks for the quick response. The RPi 3 had enough processing power
to receive a message using gr-ieee802.15.4 from a ZigBee chip in
real-time. I believe I'm running the Wifi also in real-time, is there
a way to do it in non-real time instead?
Thanks,
Eric Yates
On Mon, Dec 12, 2016 at 12:58 PM, Garver, Paul W <garv...@gatech.edu
<mailto:garv...@gatech.edu>> wrote:
I would be shocked if the Raspberry Pi 3 has the processing power
to run gr-ieee80211. Are you attempting to do this real-time?
PWG
On Dec 12, 2016, at 10:31 AM, Eric Yates <e...@lexistartup.com
<mailto:e...@lexistartup.com>> wrote:
Hello,
I'm running gr-ieee802.11 on a Raspberry Pi 3 running Raspbian.
I'm connected to a bladeRF and running GRC 3.7.10. At this point,
I want to sniff WiFi packets to demonstrate the bladeRF working
with receiving WiFi from say a router or laptop (no transmission
yet). I'm using the 2.4GHz band with 20MHz bandwidth because
bladeRF does not go up to the 5GHz band.
In the WiFi RX example, I only changed the USRP Source to a
Osmocom Source block. In this example, it appears Wireshark has
been connecting to GRC via the /tmp/wifi.pcap pipe because the
Wireshark capture session closes when I kill the WiFi RX script.
The constellation and time graphs both work, but I do not see any
packets in Wireshark no matter the channel. Executing the script
produces no errors, it just doesn't capture packets.
I thought the FFT block might be to blame because it had no
documentation for it while all the other blocks did. I
reinstalled fftw3 (v. >3) and it didn't update the documentation.
osmocom_fft also works, so I don't think the FFT block is the
problem but I wonder why it's missing documentation. Then, I
reinstalled gnuradio and gr-ieee802.11 both after making sure the
necessary dependencies were met for both. Still no changes.
Wireshark receives packets from the WiFi Loopback example sent by
the message strobe perfectly fine.
I would greatly appreciate any insights you have into why
Wireshark is not receiving any WiFi packets from the bladeRF
using the WiFi RX example. Do you have any ideas of what's going
on or would you need any more information?
Thank you,
Eric Yates
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