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bastibl / gr-ieee802-11

IEEE 802.11 a/g/p Transceiver
https://wime-project.net/
GNU General Public License v3.0
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wifi_phy_heir error: ieee802_11.wifi_signal_field() - Macports install #6

Closed ghost closed 9 years ago

ghost commented 9 years ago

[OS X Yosemite 10.10.1, GNURadio v3.7.5.2] From a fresh Macports (/opt/local/ path) installation I follow the instructions and try to open the wifi_phy_heir example.

It fails to run as the header_formatter variable value, ieee802_11.wifi_signal_field(), raises an error:

Param - Value(value): Value "ieee802_11.wifi_signal_field()" cannot be evaluated: name 'ieee802_11' is not defined

There is a mini-discussion of a workaround here: https://www.ruby-forum.com/topic/4487026 However, it did not fix my problem. I implemented their fix as the following script (note it also fixes a bug for finding the log4cpp library):

# From a fresh Macports installation...
# Basics
set -x
sudo port install uhd 
sudo port install gnuradio +full

# For GNURadio
sudo port install log4cpp
sudo port install itpp

sudo port upgrade outdated

# GR-Foo (includes Wireshark module)
git clone https://github.com/bastibl/gr-foo.git
cd gr-foo
mkdir build
cd build
cmake .. -DCMAKE_INSTALL_PREFIX=/opt/local/

sed -i '' 's/\/usr\/bin\/python/\/opt\/local\/bin\/python2.7/g' CMakeCache.txt
sed -i '' 's/\/usr\/lib\/libpython2.7.dylib/\/opt\/local\/lib\/libpython2.7.dylib/g' CMakeCache.txt
sed -i '' 's/\/System\/Library\/Frameworks\/Python.framework\/Headers/\/opt\/local\/Library\/Frameworks\/Python.framework\/Versions\/2.7\/Headers/g' CMakeCache.txt

cmake .. -DCMAKE_INSTALL_PREFIX=/opt/local/

make
sudo make install

cd ../..

# GR-ieee802-11
git clone git://github.com/bastibl/gr-ieee802-11.git
cd gr-ieee802-11

sed -i '' 's/\${GNURADIO_RUNTIME_LIBRARY_DIRS}/\${GNURADIO_RUNTIME_LIBRARY_DIRS}\'$'\n    \/opt\/local\/lib/g' CMakeLists.txt
sed -i '' 's/\${ITPP_LIBRARIES}/\${ITPP_LIBRARIES}\'$'\n    log4cpp/g' lib/CMakeLists.txt

mkdir build
cd build
cmake .. -DCMAKE_INSTALL_PREFIX=/opt/local/

sed -i '' 's/\/usr\/bin\/python/\/opt\/local\/bin\/python2.7/g' CMakeCache.txt
sed -i '' 's/\/usr\/lib\/libpython2.7.dylib/\/opt\/local\/lib\/libpython2.7.dylib/g' CMakeCache.txt
sed -i '' 's/\/System\/Library\/Frameworks\/Python.framework\/Headers/\/opt\/local\/Library\/Frameworks\/Python.framework\/Versions\/2.7\/Headers/g' CMakeCache.txt

cmake .. -DCMAKE_INSTALL_PREFIX=/opt/local/

make
sudo make install

cd ../..

Anyone know/have a possible fix?

bastibl commented 9 years ago

can you load the module in an interactive python session please.

python
import ieee802_11

This should give you more debug output than running the flow graph in grc.

ghost commented 9 years ago

Output below - the second is using the Macports python.

$> python
Python 2.7.6 (default, Sep  9 2014, 15:04:36) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.39)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import ieee802_11
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named ieee802_11
>>> ^D

$> /opt/local/bin/python2.7
Python 2.7.9 (default, Dec 13 2014, 15:13:49) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.56)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import ieee802_11
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named ieee802_11
bastibl commented 9 years ago

you have to add the install directory of the module to your python path. Use something like export PYTHONPATH=/opt/local/lib/python2.7/site-packages

ghost commented 9 years ago

Ah fantastic! Thank you so much! That solved it :)

$> export PYTHONPATH=/opt/local/lib/python2.7/site-packages
$> gnuradio-companion
sharath35 commented 9 years ago

Executing: "/home/sharathbabu/gr-ieee802-11/examples/wifi_rx.py"

linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.008.000-6-gbde8e9a3

Traceback (most recent call last): File "/home/sharathbabu/gr-ieee802-11/examples/wifi_rx.py", line 32, in import ieee802_11 ImportError: No module named ieee802_11

what is the solution for this?

bastibl commented 9 years ago

adapt your PYTHONPATH. Python can't find the module.

sharath35 commented 9 years ago

Warning: This flow graph may not have flow control: no audio or RF hardware blocks found. Add a Misc->Throttle block to your flow graph to avoid CPU congestion.

Executing: "/home/sharathbabu/gr-ieee802-11/examples/wifi_loopback.py"

linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.008.000-6-gbde8e9a3

Using Volk machine: sse3_64 OFDM MAPPER: encoding: 0 set_min_output_buffer on block 31 to 96000 set_min_output_buffer on block 33 to 96000 set_min_output_buffer on block 35 to 96000 set_min_output_buffer on block 36 to 96000 set_min_output_buffer on block 39 to 96000 set_min_output_buffer on block 50 to 96000

how can i eliminate the warning? i didn't see the 'Hello World' packets in console...

sharath35 commented 9 years ago

Executing: "/home/sharathbabu/gr-ieee802-11/examples/wifi_loopback.py"

linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.008.000-6-gbde8e9a3

Using Volk machine: sse3_64 OFDM MAPPER: encoding: 0 set_min_output_buffer on block 31 to 96000 set_min_output_buffer on block 33 to 96000 set_min_output_buffer on block 35 to 96000 set_min_output_buffer on block 36 to 96000 set_min_output_buffer on block 39 to 96000 set_min_output_buffer on block 50 to 96000 gr::vmcircbuf_sysv_shm: shmget (1): Invalid argument gr::vmcircbuf_sysv_shm: shmget (1): Invalid argument gr::vmcircbuf_sysv_shm: shmget (1): Invalid argument gr::buffer::allocate_buffer: failed to allocate buffer of size 48000 KB gr::vmcircbuf_sysv_shm: shmget (1): Invalid argument gr::vmcircbuf_sysv_shm: shmget (1): Invalid argument gr::vmcircbuf_sysv_shm: shmget (1): Invalid argument gr::buffer::allocate_buffer: failed to allocate buffer of size 48000 KB terminate called after throwing an instance of 'std::bad_alloc' what(): std::bad_alloc

what is bad_alloc ? please help me in rectifying this.

bastibl commented 9 years ago

you can ignore the warning. Concerning the error, did you do this

https://github.com/bastibl/gr-ieee802-11#adjust-maximum-shared-memory

sharath35 commented 9 years ago

yeah i did... But what is the purpose of wifi loopback in this code? Please reply me with suitable answer or any related video.

sharath35 commented 9 years ago

i had used pc with ubuntu 14.04 and usrp n210 with an antenna and GB ethernet cable. That's all required or any required hardware is necessary?..

If so i am not getting the wireshark window ater executing wifi_transceiver.grc.

Kindly reply me with the reason.

bastibl commented 9 years ago

The loopback flow graph is for loopback testing, without hardware. You will know that everything is installed correctly and that the basic things are working before sending anything over the air. Over the air is generally much harder and there are several pitfalls. So it might make sense to test things locally as a start. Apart from that can the flow graph easily be adapted for doing simulations and studying the performance of the system.

If you use the Wireshark Connector block you have to start Wireshark separately and read from the pipe you create in the flow graph (note file sink is in mode append). Look here to see how to start WIreshark

https://github.com/bastibl/gr-ieee802-11/blob/master/apps/rx_demo.sh#L43

Your hardware is fine, but first you will have to get the loopback flow graph working.

sharath35 commented 9 years ago

hello , when i execute the wifi_transceiver.grc file in gnuradio v3.7 . As i should get the output as the loopback, but i am getting the blank output in the graph. And continuosly getting DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD......... infinite times. PFA screenshot from 2015-07-23 12 06 09

sharath35 commented 9 years ago

Can you suggest me how to get the output.... in the above case

bastibl commented 9 years ago

...looks like your PC is too slow to process the incoming samples.

http://files.ettus.com/manual/page_general.html#general_ounotes

sharath35 commented 9 years ago

ok thanks for your reply. Could you suggest me any modification to be done in the code to overcome these overflows....?

bastibl commented 9 years ago

I guess the highest optimization potential has sync long and short

aler86 commented 9 years ago

Please, can you help me about wifi:loopback.grc? when i run, the output is: OFDM MAPPER: encoding: 0 set_min_output_buffer on block 31 to 96000 set_min_output_buffer on block 33 to 96000 set_min_output_buffer on block 35 to 96000 set_min_output_buffer on block 36 to 96000 set_min_output_buffer on block 39 to 96000 set_min_output_buffer on block 50 to 96000

I tried the instruction: sudo sysctl -w kernel.shmmax=2147483648

but nothing changes

aler86 commented 9 years ago

Now my output is

Showing: "/home/aler/gnuradio/gr-ieee802-11/examples/wifi_loopback.grc"

Generating: "/home/aler/gnuradio/gr-ieee802-11/examples/wifi_loopback.py"

Warning: This flow graph may not have flow control: no audio or RF hardware blocks found. Add a Misc->Throttle block to your flow graph to avoid CPU congestion.

Executing: "/home/aler/gnuradio/gr-ieee802-11/examples/wifi_loopback.py"

linux; GNU C++ version 4.6.3; Boost_104800; UHD_003.009.git-217-g012381d9

Using Volk machine: ssse3_32_orc OFDM MAPPER: encoding: 0 set_min_output_buffer on block 31 to 96000 set_min_output_buffer on block 33 to 96000 set_min_output_buffer on block 35 to 96000 set_min_output_buffer on block 36 to 96000 set_min_output_buffer on block 39 to 96000 set_min_output_buffer on block 51 to 96000 thread[thread-per-block[13]: <block ofdm_mac (49)>]: pmt_cdr: wrong_type : xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

but i don't see the scope diagram....can you help me please?

bastibl commented 9 years ago

the first output you posted is not an error but information.

If you don't see the scope, it's most likely because you installed GNU Radio without WX GUI.

aler86 commented 9 years ago

I have gr-wxgui. How is it possible?

bastibl commented 9 years ago

I don't know.... what exactly do you mean with "I don't see the scope diagram". The block is not there in GRC, the constellation does not appear, etc.

aler86 commented 9 years ago

i am getting the blank output in the graph....why?

bastibl commented 9 years ago

....because no frame was detected and, thus, no constellations of carriers are shown