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panadapter add vco/pll/rssi settle delay

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OneOfEleven 2023-11-20 12:02:30 +00:00
parent f64afe2910
commit 2e4cd3d135
3 changed files with 30 additions and 11 deletions
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31
panadapter.c
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@ -24,10 +24,11 @@ bool g_panadapter_enabled;
uint32_t g_panadapter_peak_freq;
#endif
int g_panadapter_vfo_mode; // > 0 if we're currently sampling the VFO
uint8_t g_panadapter_rssi[PANADAPTER_BINS + 1 + PANADAPTER_BINS];
uint8_t g_panadapter_max_rssi;
uint8_t g_panadapter_min_rssi;
uint8_t g_panadapter_rssi[PANADAPTER_BINS + 1 + PANADAPTER_BINS];
int panadapter_rssi_index;
int panadapter_delay;
const uint8_t panadapter_min_rssi = (-147 + 160) * 2; // min of -147dBm (S0)
@ -40,7 +41,7 @@ void PAN_update_min_max(void)
{ // compute the min/max RSSI values
register unsigned int i;
register uint8_t *p = g_panadapter_rssi;
register const uint8_t *p = g_panadapter_rssi;
register uint8_t max_rssi = *p;
register uint8_t min_rssi = *p++;
@ -64,9 +65,11 @@ void PAN_update_min_max(void)
int i;
uint8_t peak_rssi = 0;
uint8_t threshold_rssi;
uint8_t peak_rssi = 0;
uint32_t peak_freq = 0;
uint8_t span_rssi = g_panadapter_max_rssi - g_panadapter_min_rssi;
if (span_rssi < 80)
span_rssi = 80;
threshold_rssi = g_panadapter_min_rssi + (span_rssi / 4);
@ -74,17 +77,17 @@ void PAN_update_min_max(void)
// limit the step size
step_size = (step_size < PANADAPTER_MIN_STEP) ? PANADAPTER_MIN_STEP : (step_size > PANADAPTER_MAX_STEP) ? PANADAPTER_MAX_STEP : step_size;
g_panadapter_peak_freq = 0;
for (i = 0; i < (int)ARRAY_SIZE(g_panadapter_rssi); i++)
{
const uint8_t rssi = g_panadapter_rssi[i];
if (peak_rssi < rssi && rssi >= threshold_rssi && (i < (PANADAPTER_BINS - 1) || i > (PANADAPTER_BINS + 1)))
{
peak_rssi = rssi;
g_panadapter_peak_freq = center_freq + (step_size * (i - PANADAPTER_BINS));
peak_freq = center_freq + (step_size * (i - PANADAPTER_BINS));
}
}
g_panadapter_peak_freq = peak_freq;
}
#endif
@ -164,6 +167,7 @@ void PAN_process_10ms(void)
// g_panadapter_min_rssi = 0;
// memset(g_panadapter_rssi, 0, sizeof(g_panadapter_rssi));
panadapter_rssi_index = 0;
panadapter_delay = 3; // give the VCO/PLL/RSSI more time to settle
g_panadapter_enabled = true;
PAN_set_freq();
@ -189,18 +193,33 @@ void PAN_process_10ms(void)
g_panadapter_vfo_mode = g_squelch_open ? 40 : g_panadapter_vfo_mode - 1;
if (g_panadapter_vfo_mode <= 0)
{
PAN_set_freq();
panadapter_delay = 3; // give the VCO/PLL/RSSI more time to settle
}
return;
}
// scanning/sweeping
if (panadapter_delay > 0)
{
panadapter_delay--;
return;
}
// save the current RSSI value
const uint16_t rssi = BK4819_GetRSSI();
g_panadapter_rssi[panadapter_rssi_index] = (rssi > 255) ? 255 : (rssi < panadapter_min_rssi) ? panadapter_min_rssi : rssi;
// next frequency
if (++panadapter_rssi_index >= (int)ARRAY_SIZE(g_panadapter_rssi))
{
panadapter_rssi_index = 0;
panadapter_delay = 3; // give the VCO/PLL/RSSI more time to settle
}
if (g_tx_vfo->channel.mod_mode == MOD_MODE_FM)
{ // switch back to the VFO/center frequency for 100ms once every 400ms