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#!/usr/bin/python
#!/usr/bin/env python

from gnuradio import gr, digital, blocks
from math import pi

def main( ):
    fg = transmit_topblock(pi/8, sps=2)
    fg.start()
    while True:

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Common Problems with GNU Radio/VOLK submodules

This is a list of problems that we expect people to run in to when working with GNU Radio and the VOLK submodule. Each problem has a probable cause, the error message, and a solution.

Problem 1

Cause

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available files:

https://gbfs.capitalbikeshare.com/gbfs/gbfs.json

Use https://gbfs.capitalbikeshare.com/gbfs/en/station_information.json to get station_id from a location

Then use https://gbfs.capitalbikeshare.com/gbfs/en/station_status.json and filter the desired station_id to get its status

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## Booting kernel from Legacy Image at 82000000 ...
   Image Name:   Linux-3.5.7
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1786136 Bytes = 1.7 MiB
   Load Address: 80008000
   Entry Point:  80008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK

Starting kernel ...

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U-Boot SPL 2013.07 (Dec 30 2013 - 23:40:26)
i2c_write: pads on bus 0 probably not configured (status=0x10)
i2c_read (addr phase): pads on bus 0 probably not configured (status=0x10)
OMAP SD/MMC: 0
reading u-boot.img
reading u-boot.img


U-Boot 2013.07 (Dec 30 2013 - 23:40:26)

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class volk_qa_mem_pool
{
    /* QA mem pool returns an aligned and unaligned buffer with sizes
     * of N * itemsize. The buffers do not overlap so that the user
     * need not be concerned about reallocating identical vectors.
     *
     * This class exists mostly to guarantee that allocated buffers 
     * are cleaned up properly on exit
     */
    public:

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| arm-oe-linux-gnueabi-gcc: numpy/linalg/python_xerbla.c
| arm-oe-linux-gnueabi-gcc: numpy/linalg/lapack_litemodule.c
| /usr/bin/gfortran -Wall -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed build/temp.linux-i686-2.7/numpy/linalg/lapack_litemodule.o build/temp.linux-i686-2.7/numpy/linalg/python_xerbla.o -L/usr/lib -L/home/nathan/oe/build/tmp-eglibc/sysroots/zc702-zynq7/usr/lib -Lbuild/temp.linux-i686-2.7 -llapack -lblas -lpython2.7 -lgfortran -o build/lib.linux-i686-2.7/numpy/linalg/lapack_lite.so
| /usr/bin/ld: build/temp.linux-i686-2.7/numpy/linalg/lapack_litemodule.o: Relocations in generic ELF (EM: 40)
| /usr/bin/ld: build/temp.linux-i686-2.7/numpy/linalg/lapack_litemodule.o: Relocations in generic ELF (EM: 40)
| /usr/bin/ld: build/temp.linux-i686-2.7/numpy/linalg/lapack_litemodule.o: Relocations in generic ELF (EM: 40)
| /usr/bin/ld: build/temp.linux-i686-2.7/numpy/linalg/lapack_litemodule.o: Relocations in generic ELF (EM: 40)
| /usr/bin/ld: build/temp.linux-i686-2.7/numpy/linalg/lapack_litemodule.o: Relo

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static inline void volk_arm_32f_x2_add_32f_a_inlineneon(float* cVector, const float* aVector, const float* bVector, unsigned int num_points) {
    unsigned int number;
    const unsigned int quarterPoints = num_points / 4;

    float* cPtr = cVector;
    const float* aPtr = aVector;
    const float* bPtr=  bVector;


    for(number=0; number < quarterPoints; number++){

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// construction
    std::vector<int> get_in_size(void )
    {
        std::vector<int> input_sizes;
        input_sizes.push_back(sizeof( gr_complex ));
        input_sizes.push_back(sizeof( char ));
    }
    phase_watermark_cbc_impl::phase_watermark_cbc_impl(float angle)
      : gr_sync_block("phase_watermark_cbc",
                gr_make_io_signaturev(2, 2, get_in_size() ),

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#ifndef INCLUDED_WATERMARKING_PHASEDITHER_CFC_H
#define INCLUDED_WATERMARKING_PHASEDITHER_CFC_H

#include <watermarking/api.h>
#include <gr_sync_block.h>

namespace gr {
  namespace watermarking {