p25p1_tdu.c

#include "dsd.h"

#include "p25p1_hdu.h"
#include "p25p1_heuristics.h"


void
processTDU (dsd_opts* opts, dsd_state* state)
{
    AnalogSignal analog_signal_array[14];
    int status_count;

    // we skip the status dibits that occur every 36 symbols
    // the first IMBE frame starts 14 symbols before next status
    // so we start counter at 36-14-1 = 21
    status_count = 21;

    // Next 14 dibits should be zeros
    read_zeros(opts, state, analog_signal_array, 28, &status_count, 1);

    // Next we should find an status dibit
    if (status_count != 35) {
        printf("*** SYNC ERROR\n");
    }

    // trailing status symbol
    {
        int status;
        status = getDibit (opts, state) + '0';
        // TODO: do something useful with the status bits...
    }
}