RFID Hacking/usrp/: Difference between revisions

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'''''notes about the install procedure for Gen2 RFID USRP (modified gnuradio library)'''''
'''''notes about the install procedure for Gen2 RFID USRP Project (modified gnuradio library)'''''




This software/hardware allows the operator to read Gen2 RFIDs in the 900Mhz range.
This software/hardware allows the operator to read Gen2 RFIDs in the 900Mhz range.<BR>
This project has not yet been publicly distributed but the author tells us
This project has not yet been publicly distributed but the author tells us<BR>
it will be released soon. These notes are not an install recipe... rather they are
it will be released soon. These notes are not an install recipe... rather they are<BR>
clarification to help describe the install procedure.
clarification to help describe the install procedure.<BR>


According to the README, this project was tested with gnuradio subversion changeset 10532...
According to the README, this project was tested with gnuradio subversion changeset 10532...
Line 37: Line 37:
so it should contain most gnuradio dependencies :
so it should contain most gnuradio dependencies :
<pre>
<pre>
apt-get install -y libboost-dev python python2.5-dev libfftw3-dev swig sdcc-nf libusb-dev guile-1.8-dev libcppunit-dev libosip2-dev libortp7-dev asterisk
apt-get install -y python python2.5-dev libfftw3-dev swig sdcc-nf libusb-dev guile-1.8-dev libcppunit-dev libosip2-dev libortp7-dev asterisk
</pre>
</pre>


Line 64: Line 64:
<pre>
<pre>
cd gnuradio/gr-gen2-rfid/src/lib
cd gnuradio/gr-gen2-rfid/src/lib
make clean
</pre>
</pre>


apply this patch:
apply this patch:


gnuradio/gr-gen2-rfid/src/lib/rfid_gen2_reader.cc
'''gnuradio/gr-gen2-rfid/src/lib/rfid_gen2_reader.cc'''
<PRE>
<PRE>
42,48d41
42,48d41
Line 87: Line 88:
</PRE>
</PRE>


<pre>
make
make install
make install
</pre>
----
=== And finally run the program ===


--
<pre>
<pre>
sudo -s
sudo -s

Latest revision as of 00:13, 19 November 2010

notes about the install procedure for Gen2 RFID USRP Project (modified gnuradio library)


This software/hardware allows the operator to read Gen2 RFIDs in the 900Mhz range.
This project has not yet been publicly distributed but the author tells us
it will be released soon. These notes are not an install recipe... rather they are
clarification to help describe the install procedure.

According to the README, this project was tested with gnuradio subversion changeset 10532...

$ svn co -r 10532 http://gnuradio.org/svn/gnuradio/trunk gnuradio

step #1
Copy gen2_reader/gnuradio/misc_files/grc_gr_gen2_rfid.m4 to gnuradio/config

cp gen2_reader/gnuradio/misc_files/grc_gr_gen2_rfid.m4 gnuradio/config

step #2

cp -a gen2_reader/gnuradio/gr-gen2-rfid gnuradio/

step #4
add the following to line 304ish: GRC_GR_GEN2_RFID




This here are software dependencies from a different gnuradio project so it should contain most gnuradio dependencies :

apt-get install -y python python2.5-dev libfftw3-dev swig sdcc-nf libusb-dev guile-1.8-dev libcppunit-dev libosip2-dev libortp7-dev asterisk

gnuradio dependencies:

  • built/installed the latest libboost and then install libgsl :
apt-get install libgsl0-dev

gnuradio build:

./configure --prefix=/usr/local/gnuradio-rfid --enable-gr-gen2-rfid --enable-gnuradio-core --enable-gr-audio-oss

make

make install

step #8

cp gen2_reader/gnuradio/misc_files/gen2_reader.rbf /usr/local/gnuradio-rfid/share/usrp/rev4

step #9

cd gnuradio/gr-gen2-rfid/src/lib
make clean

apply this patch:

gnuradio/gr-gen2-rfid/src/lib/rfid_gen2_reader.cc

42,48d41
< // FIXME NB
< inline float min(float a, float b)
< {
<   return a <= b ? a : b;
< }
< 
< 
645,647c638,639
<    //FIXME NB
<     //int mm = std::min((tx_msg->length() - d_msg_count) / sizeof(gr_complex), (long unsigned int) noutput_items - nout);
<     int mm = min((tx_msg->length() - d_msg_count) / sizeof(gr_complex), (long unsigned int) noutput_items - nout);
---
>     
>     int mm = std::min((tx_msg->length() - d_msg_count) / sizeof(gr_complex), (long unsigned int) noutput_items - nout);
make
make install



And finally run the program[edit]

sudo -s

PYTHONPATH=/usr/local/gnuradio-rfid/lib/python2.5/site-packages GR_SCHEDULER=STS nice -n -20 ./gen2_reader.py