[Discuss-gnuradio] Problem trying to implement Reed Solomon encoder
Hello,
I'm trying to create a GNU Radio block that carries out a Reed Solomon
coding based on the functions provided into the
directory /gnuradio-core/src/lib/reed-solomon.
As an example I have taken the block gr_encode_ccsds_27 that can be
found in the directory /gnuradio-core/src/lib/general since it uses the
functions implemented in /gnuradio-core/src/lib/viterbi.
Basically the aspect of my gr_rs_encoder_vbb.cc file is the following:
#ifdef HAVE_CONFIG_H
#include config.h
#endif
#include gr_rs_encoder_vbb.h
#include gr_io_signature.h
extern C {
#include ../reed-solomon/fixed.h
}
gr_rs_encoder_vbb_sptr
gr_make_rs_encoder_vbb()
{
return gr_rs_encoder_vbb_sptr(new gr_rs_encoder_vbb());
}
gr_rs_encoder_vbb::gr_rs_encoder_vbb()
: gr_sync_block(rs_encoder_vbb,
gr_make_io_signature(1, 1, (223)*sizeof(char)),
gr_make_io_signature(1, 1, 255*sizeof(char)))
{
}
gr_rs_encoder_vbb::~gr_rs_encoder_vbb()
{
}
int
gr_rs_encoder_vbb::work(int noutput_items,
gr_vector_const_void_star input_items,
gr_vector_void_star output_items)
{
const unsigned char *in = (const unsigned char *)input_items[0];
unsigned char *out = (unsigned char *)output_items[0];
for (int i = 0; i noutput_items; i++)
{
unsigned char *temp_first_element = out;
for (int j = 0; j (223); j++)
*out++ = *in++;
ENCODE_RS(temp_first_element,--out);
}
return noutput_items;
}
I include the file fixed.h since I want to use the implementation of the
CCSDS standard (255,223).
When I execute make into the main folder of GNU Radio for compiling
everything I get the following ERROR message:
/bin/bash ../../../libtool --tag=CXX --mode=link g++ -g -O2 -Wall
-Woverloaded-virtual -pthread -o benchmark_dotprod_fff
benchmark_dotprod_fff.o
/home/apalomo/software/gnuradio-3.1.3/gnuradio-core/src/lib/libgnuradio-core.la
libtool: link: g++ -g -O2 -Wall -Woverloaded-virtual -pthread
-o .libs/benchmark_dotprod_fff
benchmark_dotprod_fff.o
/home/apalomo/software/gnuradio-3.1.3/gnuradio-core/src/lib/.libs/libgnuradio-core.so
/home/apalomo/software/gnuradio-3.1.3/omnithread/.libs/libgromnithread.so -lrt
/usr/lib/libfftw3f.so -lm -pthread
/home/apalomo/software/gnuradio-3.1.3/gnuradio-core/src/lib/.libs/libgnuradio-core.so:
undefined reference to `encode_rs_8'
collect2: ld returned 1 exit status
make[4]: *** [benchmark_dotprod_fff] Error 1
make[4]: Leaving directory
`/home/apalomo/software/gnuradio-3.1.3/gnuradio-core/src/tests'
make[3]: *** [all-recursive] Error 1
It looks like I'm missing to include another file somewhere, but I have
no idea where.
Have anybody tried to implement this yet or anybody knows how I could
fix it?
Thank you very much.
Best regards.
Alvaro Palomo
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Re: [Discuss-gnuradio] Problem trying to implement Reed Solomon encoder
Hi, Your problem is because you are not *linking* with the Reed/Solomon library. The problem is that you've wrapped the '#include fixed.h' inside an 'extern C' block. If you remove it then you'll be one step closer to getting it working. Is mise, Stevie ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] USRP harware problem?
we have 2 usrp boxes. 1 now doesn't work, only 2 works. we use 3 steps to check if it is the hardware problem: step 1) recognized by linux? on good box: lsusb Bus 007 Device 001: ID : Bus 005 Device 001: ID : Bus 004 Device 001: ID : Bus 003 Device 001: ID : Bus 001 Device 004: ID 413c:3012 Dell Computer Corp. Bus 001 Device 003: ID 413c:2003 Dell Computer Corp. Bus 001 Device 001: ID : Bus 006 Device 012: ID fffe:0002 Bus 006 Device 001: ID : Bus 002 Device 001: ID : on bad box: lsusb Bus 007 Device 001: ID : Bus 005 Device 001: ID : Bus 004 Device 001: ID : Bus 003 Device 001: ID : Bus 001 Device 004: ID 413c:3012 Dell Computer Corp. Bus 001 Device 003: ID 413c:2003 Dell Computer Corp. Bus 001 Device 001: ID : Bus 006 Device 013: ID 04b4:8613 Cypress Semiconductor Corp. CY7C68013 EZ-USB FX2 USB 2.0 Development Kit Bus 006 Device 001: ID : Bus 002 Device 001: ID : seems bad box is recognized?? -- View this message in context: http://www.nabble.com/USRP-harware-problem--tp20629596p20629596.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USRP harware problem?
step 2) proper device driver loaded and device entry created in /dev ? good box: /dev/bus/usb$ ls -l total 0 drwxr-xr-x 2 root root 100 2008-11-14 17:04 001 drwxr-xr-x 2 root root 60 2008-11-14 17:04 002 drwxr-xr-x 2 root root 60 2008-11-14 17:04 003 drwxr-xr-x 2 root root 60 2008-11-14 17:04 004 drwxr-xr-x 2 root root 60 2008-11-14 17:04 005 drwxr-xr-x 2 root root 80 2008-11-21 12:59 006 drwxr-xr-x 2 root root 60 2008-11-14 17:04 007 bad box: /dev/bus/usb$ ls -l total 0 drwxr-xr-x 2 root root 100 2008-11-14 17:04 001 drwxr-xr-x 2 root root 60 2008-11-14 17:04 002 drwxr-xr-x 2 root root 60 2008-11-14 17:04 003 drwxr-xr-x 2 root root 60 2008-11-14 17:04 004 drwxr-xr-x 2 root root 60 2008-11-14 17:04 005 drwxr-xr-x 2 root root 80 2008-11-21 13:00 006 drwxr-xr-x 2 root root 60 2008-11-14 17:04 007 -- View this message in context: http://www.nabble.com/USRP-harware-problem--tp20629596p20629620.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USRP harware problem?
step 3) the control software access the device entry correctly? good box /gnuradio/gnuradio/gnuradio-examples/python/usrp$ ./usrp_benchmark_usb.py Testing 2MB/sec... usb_throughput = 2M ntotal= 100 nright= 999452 runlength = 999452 delta = 548 OK Testing 4MB/sec... usb_throughput = 4M ntotal= 200 nright= 1999583 runlength = 1999583 delta = 417 OK Testing 8MB/sec... usb_throughput = 8M ntotal= 400 nright= 3998943 runlength = 3998943 delta = 1057 OK Testing 16MB/sec... usb_throughput = 16M ntotal= 800 nright= 7999584 runlength = 7999584 delta = 416 OK Testing 32MB/sec... usb_throughput = 32M ntotal= 1600 nright= 15998150 runlength = 15998150 delta = 1850 OK Max USB/USRP throughput = 32MB/sec bad box: /gnuradio/gnuradio/gnuradio-examples/python/usrp$ ./usrp_benchmark_usb.py Testing 2MB/sec... Traceback (most recent call last): File ./usrp_benchmark_usb.py, line 106, in module main () File ./usrp_benchmark_usb.py, line 96, in main ok = run_test (rate, verbose) File ./usrp_benchmark_usb.py, line 63, in run_test usrp_tx = usrp.sink_s (0, tx_interp) File /usr/local/lib/python2.5/site-packages/gnuradio/usrp.py, line 228, in __init__ _ensure_rev2(which) File /usr/local/lib/python2.5/site-packages/gnuradio/usrp.py, line 83, in _ensure_rev2 v = _look_for_usrp(which) File /usr/local/lib/python2.5/site-packages/gnuradio/usrp.py, line 77, in _look_for_usrp raise RuntimeError, Unable to find USRP #%d % (which,) RuntimeError: Unable to find USRP #0 can anybody help us out? thanks a lot! -- View this message in context: http://www.nabble.com/USRP-harware-problem--tp20629596p20629647.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
