Ejemplo n.º 1
0
// destroy WLAN framing synchronizer object
void wlanframesync_destroy(wlanframesync _q)
{
#if DEBUG_WLANFRAMESYNC
    // free debugging objects if necessary
    if (_q->agc_rx          != NULL) agc_crcf_destroy(_q->agc_rx);
    if (_q->debug_x         != NULL) windowcf_destroy(_q->debug_x);
    if (_q->debug_rssi      != NULL) windowf_destroy(_q->debug_rssi);
    if (_q->debug_framesyms != NULL) windowcf_destroy(_q->debug_framesyms);
#endif

    // free transform object
    windowcf_destroy(_q->input_buffer);
    free(_q->X);
    free(_q->x);
    FFT_DESTROY_PLAN(_q->fft);
    
    // destroy synchronizer objects
    nco_crcf_destroy(_q->nco_rx);       // numerically-controlled oscillator
    wlan_lfsr_destroy(_q->ms_pilot);    // pilot sequence generator

    // free memory for encoded message
    free(_q->msg_enc);

    // free main object memory
    free(_q);
}
Ejemplo n.º 2
0
void ofdmframesync_destroy(ofdmframesync _q)
{
#if DEBUG_OFDMFRAMESYNC
    // destroy debugging objects
    if (_q->debug_x         != NULL) windowcf_destroy(_q->debug_x);
    if (_q->debug_rssi      != NULL) windowf_destroy(_q->debug_rssi);
    if (_q->debug_framesyms != NULL) windowcf_destroy(_q->debug_framesyms);
    if (_q->G_hat           != NULL) free(_q->G_hat);
    if (_q->px              != NULL) free(_q->px);
    if (_q->py              != NULL) free(_q->py);
    if (_q->debug_pilot_0   != NULL) windowf_destroy(_q->debug_pilot_0);
    if (_q->debug_pilot_1   != NULL) windowf_destroy(_q->debug_pilot_1);
#endif

    // free subcarrier type array memory
    free(_q->p);

    // free transform object
    windowcf_destroy(_q->input_buffer);
    free(_q->X);
    free(_q->x);
    FFT_DESTROY_PLAN(_q->fft);

    // clean up PLCP arrays
    free(_q->S0);
    free(_q->s0);
    free(_q->S1);
    free(_q->s1);

    // free gain arrays
    free(_q->G0);
    free(_q->G1);
    free(_q->G);
    free(_q->B);
    free(_q->R);

    // destroy synchronizer objects
    nco_crcf_destroy(_q->nco_rx);           // numerically-controlled oscillator
    msequence_destroy(_q->ms_pilot);

    // free main object memory
    free(_q);
}
Ejemplo n.º 3
0
void ampmodem_destroy(ampmodem _q)
{
#if DEBUG_AMPMODEM
    // export output debugging file
    ampmodem_debug_print(_q, DEBUG_AMPMODEM_FILENAME);

    // destroy debugging objects
    windowcf_destroy(_q->debug_x);
    windowf_destroy(_q->debug_phase_error);
    windowf_destroy(_q->debug_freq_error);
#endif

    // destroy nco object
    nco_crcf_destroy(_q->oscillator);

    // destroy hilbert transform
    firhilbf_destroy(_q->hilbert);

    // free main object memory
    free(_q);
}
Ejemplo n.º 4
0
// destroy frame synchronizer object, freeing all internal memory
void gmskframesync_destroy(gmskframesync _q)
{
#if DEBUG_GMSKFRAMESYNC
    // destroy debugging objects
    if (_q->debug_objects_created) {
        windowcf_destroy(_q->debug_x);
        windowf_destroy(_q->debug_fi);
        windowf_destroy(_q->debug_mf);
        windowf_destroy( _q->debug_framesyms);
    }
#endif

    // destroy synchronizer objects
#if GMSKFRAMESYNC_PREFILTER
    iirfilt_crcf_destroy(_q->prefilter);// pre-demodulator filter
#endif
    firpfb_rrrf_destroy(_q->mf);                // matched filter
    firpfb_rrrf_destroy(_q->dmf);               // derivative matched filter
    nco_crcf_destroy(_q->nco_coarse);           // coarse NCO

    // preamble
    detector_cccf_destroy(_q->frame_detector);
    windowcf_destroy(_q->buffer);
    free(_q->preamble_pn);
    free(_q->preamble_rx);
    
    // header
    packetizer_destroy(_q->p_header);
    free(_q->header_mod);
    free(_q->header_enc);
    free(_q->header_dec);

    // payload
    packetizer_destroy(_q->p_payload);
    free(_q->payload_enc);
    free(_q->payload_dec);

    // free main object memory
    free(_q);
}
Ejemplo n.º 5
0
void gmskdem_destroy(gmskdem _q)
{
#if DEBUG_GMSKDEM
    // print to external file
    gmskdem_debug_print(_q, DEBUG_GMSKDEM_FILENAME);

    // destroy debugging objects
    windowf_destroy(_q->debug_mfout);
#endif

    // destroy filter object
#if GMSKDEM_USE_EQUALIZER
    eqlms_rrrf_destroy(_q->eq);
#else
    firfilt_rrrf_destroy(_q->filter);
#endif

    // free filter array
    free(_q->h);

    // free main object memory
    free(_q);
}
Ejemplo n.º 6
0
void ofdmoqamframe64sync_destroy(ofdmoqamframe64sync _q)
{
#if DEBUG_OFDMOQAMFRAME64SYNC
    ofdmoqamframe64sync_debug_print(_q);
    windowcf_destroy(_q->debug_x);
    windowcf_destroy(_q->debug_rxx);
    windowcf_destroy(_q->debug_rxy);
    windowcf_destroy(_q->debug_framesyms);
    windowf_destroy(_q->debug_pilotphase);
    windowf_destroy(_q->debug_pilotphase_hat);
    windowf_destroy(_q->debug_rssi);
#endif

    // free analysis filter bank memory objects
    firpfbch_destroy(_q->ca0);
    firpfbch_destroy(_q->ca1);
    free(_q->X0);
    free(_q->X1);
    free(_q->Y0);
    free(_q->Y1);

    // clean up PLCP arrays
    free(_q->S0);
    free(_q->S1);
    free(_q->S2);
    free(_q->S1a);
    free(_q->S1b);

    // free pilot msequence object memory
    msequence_destroy(_q->ms_pilot);

    // free agc | signal detection object memory
    agc_crcf_destroy(_q->sigdet);

    // free NCO object memory
    nco_crcf_destroy(_q->nco_rx);

    // free auto-correlator memory objects
    autocorr_cccf_destroy(_q->autocorr);

    // free cross-correlator memory objects
    firfilt_cccf_destroy(_q->crosscorr);
    free(_q->hxy);

    // free gain arrays
    free(_q->G0);
    free(_q->G1);
    free(_q->G);

    // free data buffer
    free(_q->data);

    // free input buffer
    windowcf_destroy(_q->input_buffer);

    nco_crcf_destroy(_q->nco_pilot);
    pll_destroy(_q->pll_pilot);

    // free main object memory
    free(_q);
}
Ejemplo n.º 7
0
//
// AUTOTEST: windowf
//
void autotest_windowf()
{
    float v[] = {9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
    float *r;   // reader pointer
    float x;    // temporary value holder
    unsigned int i;

    float test0[10] = {0,0,0,0,0,0,0,0,0,0};
    float test1[10] = {0,0,0,0,0,0,1,1,1,1};
    float test2[10] = {0,0,1,1,1,1,9,8,7,6};
    float test3[10] = {1,1,9,8,7,6,3,3,3,3};
    float test4[10] = {7,6,3,3,3,3,5,5,5,5};
    float test5[6]  = {3,3,5,5,5,5};
    float test6[6]  = {5,5,5,5,6,7};
    float test7[10] = {0,0,0,0,5,5,5,5,6,7};
    float test8[10] = {0,0,0,0,0,0,0,0,0,0};

    // create window
    // 0 0 0 0 0 0 0 0 0 0
    windowf w = windowf_create(10);

    windowf_read(w, &r);
    CONTEND_SAME_DATA(r,test0,10*sizeof(float));

    // push 4 elements
    // 0 0 0 0 0 0 1 1 1 1
    windowf_push(w, 1);
    windowf_push(w, 1);
    windowf_push(w, 1);
    windowf_push(w, 1);

    windowf_read(w, &r);
    CONTEND_SAME_DATA(r,test1,10*sizeof(float));

    // push 4 more elements
    // 0 0 1 1 1 1 9 8 7 6
    windowf_write(w, v, 4);

    windowf_read(w, &r);
    CONTEND_SAME_DATA(r,test2,10*sizeof(float));

    // push 4 more elements
    // 1 1 9 8 7 6 3 3 3 3
    windowf_push(w, 3);
    windowf_push(w, 3);
    windowf_push(w, 3);
    windowf_push(w, 3);

    windowf_read(w, &r);
    CONTEND_SAME_DATA(r,test3,10*sizeof(float));

    // test indexing operation
    windowf_index(w, 0, &x);    CONTEND_EQUALITY(x, 1);
    windowf_index(w, 1, &x);    CONTEND_EQUALITY(x, 1);
    windowf_index(w, 2, &x);    CONTEND_EQUALITY(x, 9);
    windowf_index(w, 3, &x);    CONTEND_EQUALITY(x, 8);
    windowf_index(w, 4, &x);    CONTEND_EQUALITY(x, 7);
    windowf_index(w, 5, &x);    CONTEND_EQUALITY(x, 6);
    windowf_index(w, 6, &x);    CONTEND_EQUALITY(x, 3);
    windowf_index(w, 7, &x);    CONTEND_EQUALITY(x, 3);
    windowf_index(w, 8, &x);    CONTEND_EQUALITY(x, 3);
    windowf_index(w, 9, &x);    CONTEND_EQUALITY(x, 3);

    // push 4 more elements
    // 7 6 3 3 3 3 5 5 5 5
    windowf_push(w, 5);
    windowf_push(w, 5);
    windowf_push(w, 5);
    windowf_push(w, 5);

    windowf_read(w, &r);
    CONTEND_SAME_DATA(r,test4,10*sizeof(float));
    if (liquid_autotest_verbose)
        windowf_debug_print(w);

    // recreate window (truncate to last 6 elements)
    // 3 3 5 5 5 5
    w = windowf_recreate(w,6);
    windowf_read(w, &r);
    CONTEND_SAME_DATA(r,test5,6*sizeof(float));

    // push 2 more elements
    // 5 5 5 5 6 7
    windowf_push(w, 6);
    windowf_push(w, 7);
    windowf_read(w, &r);
    CONTEND_SAME_DATA(r,test6,6*sizeof(float));

    // recreate window (extend to 10 elements)
    // 0 0 0 0 5 5 5 5 6 7
    w = windowf_recreate(w,10);
    windowf_read(w,&r);
    CONTEND_SAME_DATA(r,test7,10*sizeof(float));

    // reset
    // 0 0 0 0 0 0 0 0 0 0
    windowf_reset(w);

    windowf_read(w, &r);
    CONTEND_SAME_DATA(r,test8,10*sizeof(float));

    if (liquid_autotest_verbose) {
        // manual print
        printf("manual output:\n");
        for (i=0; i<10; i++)
            printf("%6u : %f\n", i, r[i]);

        windowf_debug_print(w);
    }

    windowf_destroy(w);

    printf("done.\n");
}