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Tweaks to NXDN FSW Tests II; #123

This commit is contained in:
lwvmobile 2023-05-14 13:54:48 -04:00
parent f7ad3e638f
commit e390251b9d
2 changed files with 81 additions and 73 deletions
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140
src/dsd_frame_sync.c
View File

@ -231,10 +231,10 @@ getFrameSync (dsd_opts * opts, dsd_state * state)
{
t_max = 12; //based on Frame_Sync_2 pattern
}
//if Phase 2 (or YSF in future), then only 20
//if Phase 2 (or YSF in future), then only 19
else if (state->lastsynctype == 35 || state->lastsynctype == 36) //P2
{
t_max = 20;
t_max = 19; //Phase 2 S-ISCH is only 19
}
else t_max = 24; //24 for everything else
@ -1279,18 +1279,7 @@ getFrameSync (dsd_opts * opts, dsd_state * state)
#ifdef NXDNTESTSYNC //use experimental sync detection based on multiple factors
//NXDN FSW sync and handling - testing with more exact syncs and also inlv (state->max)
//Theory is that pure noise is always much louder than an organized signal
//The state->max inlvl will hinge on the user setting an appropriate gain level
//so, this may not entirely be ideal, loud system may still not decode properly
//currently set to invlv 5000 or ~31% or less audio in level when dividing by 164
//Also, landing on other signal types will probably also
//trigger this without squelch enabled
//NOTE: This test seems to work better for NXDN48 than it does for NXDN96
//NXDN FSW sync and handling - testing with more exact syncs patterns
else if ((opts->frame_nxdn96 == 1) || (opts->frame_nxdn48 == 1))
{
strncpy (synctest10, (synctest_p - 9), 10); //FSW only
@ -1300,86 +1289,103 @@ getFrameSync (dsd_opts * opts, dsd_state * state)
//error will occur due to the demodulation issues internally
//Preamble plus FSW, proceed right away
if ( (strcmp (synctest19, "3131133313131331131") == 0 ) ||
(strcmp (synctest19, "3131133313331331131") == 0 ) ||
(strcmp (synctest19, "3131133313131331111") == 0 ) ||
(strcmp (synctest19, "3131133313331331111") == 0 ) )
if (
(strcmp (synctest19, "3131133313131331131") == 0 )
|| (strcmp (synctest19, "3131133313331331131") == 0 )
|| (strcmp (synctest19, "3131133313131331111") == 0 )
|| (strcmp (synctest19, "3131133313331331111") == 0 )
)
{
state->carrier = 1;
state->offset = synctest_pos;
state->max = ((state->max) + lmax) / 2;
state->min = ((state->min) + lmin) / 2;
// state->carrier = 1;
state->lastsynctype = 28;
// if (opts->payload == 1) fprintf (stderr, "\n PANDF ");
// if (opts->payload == 1) fprintf (stderr, " %s ", synctest19);
// if (opts->payload == 1) fprintf (stderr, " maxlvl %d ", state->max / 164);
// if (opts->payload == 1) fprintf (stderr, " minlvl %d ", state->min);
if (state->max < 5000)
return (28);
}
else if ( (strcmp (synctest19, "1313311133131331131") == 0 ) ||
(strcmp (synctest19, "1313311133331331131") == 0 ) ||
(strcmp (synctest19, "1313311133131331111") == 0 ) ||
(strcmp (synctest19, "1313311133331331111") == 0 ) )
{
state->carrier = 1;
state->offset = synctest_pos;
state->max = ((state->max) + lmax) / 2;
state->min = ((state->min) + lmin) / 2;
// if (opts->payload == 1)
// fprintf (stderr, "\n +PANDF ");
// if (opts->payload == 1)
// fprintf (stderr, " %s \n", synctest19);
return (28);
}
else if (
(strcmp (synctest19, "1313311133131331131") == 0 )
|| (strcmp (synctest19, "1313311133331331131") == 0 )
|| (strcmp (synctest19, "1313311133131331111") == 0 )
|| (strcmp (synctest19, "1313311133331331111") == 0 )
)
{
// state->carrier = 1;
state->lastsynctype = 29;
// if (opts->payload == 1) fprintf (stderr, "\n PANDF ");
// if (opts->payload == 1) fprintf (stderr, " %s ", synctest19);
// if (opts->payload == 1) fprintf (stderr, " maxlvl %d ", state->max / 164);
// if (opts->payload == 1) fprintf (stderr, " minlvl %d ", state->min);
if (state->max < 5000)
return (29);
state->offset = synctest_pos;
state->max = ((state->max) + lmax) / 2;
state->min = ((state->min) + lmin) / 2;
// if (opts->payload == 1)
// fprintf (stderr, "\n -PANDF ");
// if (opts->payload == 1)
// fprintf (stderr, " %s \n", synctest19);
return (29);
}
else if ( (strcmp (synctest10, "3131331131") == 0 ) ||
(strcmp (synctest10, "3331331131") == 0 ) ||
(strcmp (synctest10, "3131331111") == 0 ) ||
(strcmp (synctest10, "3331331111") == 0 ) )
else if (
(strcmp (synctest10, "3131331131") == 0 )
|| (strcmp (synctest10, "3331331131") == 0 )
|| (strcmp (synctest10, "3131331111") == 0 )
|| (strcmp (synctest10, "3331331111") == 0 )
)
{
state->carrier = 1;
// state->carrier = 1;
state->offset = synctest_pos;
state->max = ((state->max) + lmax) / 2;
state->min = ((state->min) + lmin) / 2;
if (state->lastsynctype == 28)
{
// if (opts->payload == 1) fprintf (stderr, "\n FSW ");
// if (opts->payload == 1) fprintf (stderr, " %s ", synctest10);
// if (opts->payload == 1) fprintf (stderr, " maxlvl %d ", state->max / 164); //see if we can get max to meet threshold first?
// if (opts->payload == 1) fprintf (stderr, " minlvl %d ", state->min);
if (state->max < 5000)
return (28);
}
if (state->max < 5000)
state->lastsynctype = 28;
// if (opts->payload == 1)
// fprintf (stderr, "\n +FSW ");
// if (opts->payload == 1)
// fprintf (stderr, " %s \n", synctest10);
return (28);
}
state->lastsynctype = 28;
}
else if ( (strcmp (synctest10, "1313113313") == 0 ) ||
(strcmp (synctest10, "1113113313") == 0 ) ||
(strcmp (synctest10, "1313113333") == 0 ) ||
(strcmp (synctest10, "1113113333") == 0 ) )
else if (
(strcmp (synctest10, "1313113313") == 0 )
|| (strcmp (synctest10, "1113113313") == 0 )
|| (strcmp (synctest10, "1313113333") == 0 )
|| (strcmp (synctest10, "1113113333") == 0 )
)
{
state->carrier = 1;
// state->carrier = 1;
state->offset = synctest_pos;
state->max = ((state->max) + lmax) / 2;
state->min = ((state->min) + lmin) / 2;
if (state->lastsynctype == 29)
{
// if (opts->payload == 1) fprintf (stderr, "\n FSW ");
// if (opts->payload == 1) fprintf (stderr, " %s ", synctest10);
// if (opts->payload == 1) fprintf (stderr, " maxlvl %d ", state->max / 164);
// if (opts->payload == 1) fprintf (stderr, " minlvl %d ", state->min);
if (state->max < 5000)
return (29);
}
if (state->max < 5000)
state->lastsynctype = 29;
// if (opts->payload == 1)
// fprintf (stderr, "\n -FSW ");
// if (opts->payload == 1)
// fprintf (stderr, " %s \n", synctest10);
return (29);
}
state->lastsynctype = 29;
}
}

14
src/nxdn_convolution.c
View File

@ -49,14 +49,14 @@ static const unsigned int CNXDNConvolution_NUM_OF_STATES = 16U;
static const uint32_t CNXDNConvolution_M = 4U;
static const unsigned int CNXDNConvolution_K = 5U;
static uint16_t m_metrics1[16U] = {0};
static uint16_t m_metrics2[16U] = {0};
static uint64_t m_decisions[300U] = {0};
//NOTE:
static uint16_t m_metrics1[16U];
static uint16_t m_metrics2[16U];
static uint64_t m_decisions[300U]; //300
static uint16_t * m_oldMetrics = NULL;
static uint16_t * m_newMetrics = NULL;
static uint64_t * m_dp = NULL;
/* Functions ----------------------------------------------------------------*/
void CNXDNConvolution_decode(uint8_t s0, uint8_t s1)
@ -158,13 +158,15 @@ void CNXDNConvolution_encode(const unsigned char* in, unsigned char* out, unsign
void CNXDNConvolution_start(void)
{
memset(m_metrics1, 0x00U, CNXDNConvolution_NUM_OF_STATES * sizeof(uint16_t));
memset(m_metrics2, 0x00U, CNXDNConvolution_NUM_OF_STATES * sizeof(uint16_t));
m_oldMetrics = m_metrics1;
m_newMetrics = m_metrics2;
m_dp = m_decisions;
memset(m_metrics1, 0x00U, sizeof(m_metrics1));
memset(m_metrics2, 0x00U, sizeof(m_metrics2));
memset(m_decisions, 0x00U, sizeof(m_decisions));
for (int x = 0; x < 4; x++) CNXDNConvolution_decode(0U, 0U);
}