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EDACS: Digitize Analog For Analysis of 'Data Burst' Like Behavior;

This commit is contained in:
lwvmobile 2024-03-24 16:08:16 -04:00
parent 9249b7a943
commit 9bbe4de7fd
1 changed files with 39 additions and 0 deletions
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39
src/edacs-fme.c
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@ -76,6 +76,12 @@ void edacs_analog(dsd_opts * opts, dsd_state * state, int afs, unsigned char lcn
short analog3[960];
short sample = 0;
#define DEBUG_ANALOG //enable to digitize analog if 'data' bursts heard
uint8_t d1[192];
uint8_t d2[192];
uint8_t d3[192];
state->last_cc_sync_time = time(NULL);
state->last_vc_sync_time = time(NULL);
@ -83,6 +89,10 @@ void edacs_analog(dsd_opts * opts, dsd_state * state, int afs, unsigned char lcn
memset (analog2, 0, sizeof(analog2));
memset (analog3, 0, sizeof(analog3));
memset (d1, 0, sizeof(d1));
memset (d2, 0, sizeof(d2));
memset (d3, 0, sizeof(d3));
long int rms = opts->rtl_squelch_level + 1; //one more for the initial loop phase
long int sql = opts->rtl_squelch_level;
@ -206,6 +216,17 @@ void edacs_analog(dsd_opts * opts, dsd_state * state, int afs, unsigned char lcn
sr += digitize (opts, state, (int)analog1[i]);
}
#ifdef DEBUG_ANALOG
//save digitized samples to array for looking into those 'data' sounding bursts,
//this format assumes the same sample per symbol rateused in EDACS/PV
for (i = 0; i < 192; i++) //Samples Per Symbol is 5, so incrememnt every 5
{
d1[i] = digitize (opts, state, (int)analog1[i*5]);
d2[i] = digitize (opts, state, (int)analog2[i*5]);
d3[i] = digitize (opts, state, (int)analog3[i*5]);
}
#endif
//Bugfix for buffer overflow from using digitize function, reset buffers
if (state->dibit_buf_p > state->dibit_buf + 900000)
state->dibit_buf_p = state->dibit_buf + 200;
@ -339,6 +360,24 @@ void edacs_analog(dsd_opts * opts, dsd_state * state, int afs, unsigned char lcn
fprintf (stderr, "SQL HIT: %d; ", 5-cnt); //add cnt since user can't see red or green
#endif
#ifdef DEBUG_ANALOG
//debug digitized version of analog out when data bursts may be present
//NOTE: Without a 'framesync' these could be shifted into odd positions
if (opts->payload == 1)
{
fprintf (stderr, "\n A_DUMP: ");
for (i = 0; i < 24; i++)
fprintf (stderr, "%02X", (uint8_t)ConvertBitIntoBytes(&d1[i*8], 8));
fprintf (stderr, "\n ");
for (i = 0; i < 24; i++)
fprintf (stderr, "%02X", (uint8_t)ConvertBitIntoBytes(&d2[i*8], 8));
fprintf (stderr, "\n ");
for (i = 0; i < 24; i++)
fprintf (stderr, "%02X", (uint8_t)ConvertBitIntoBytes(&d3[i*8], 8));
// fprintf (stderr, "\n");
}
#endif
if (count > 0) fprintf (stderr, "\n");
}