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Code Issues Releases Activity

Maintain monitor state when up/down freq/chan

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OneOfEleven
2023-09-26 13:59:01 +01:00
parent 9d178c549a
commit 14f154b927
11 changed files with 103 additions and 48 deletions
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45
am_fix.c
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@ -297,7 +297,7 @@ const uint8_t orig_pga = 6; // -3dB
#endif
unsigned int counter = 0;
int16_t orig_dB_gain = -17;
#ifdef ENABLE_AM_FIX_TEST1
@ -321,8 +321,14 @@ const uint8_t orig_pga = 6; // -3dB
// used to limit the max front end gain
unsigned int max_index = ARRAY_SIZE(am_fix_gain_table) - 1;
#ifndef ENABLE_AM_FIX_TEST1
// -89dBm, any higher and the AM demodulator starts to saturate/clip/distort
const int16_t desired_rssi = (-89 + 160) * 2;
#endif
void AM_fix_init(void)
{
{ // called at boot-up
/* unsigned int i;
for (i = 0; i < 2; i++)
{
@ -359,6 +365,8 @@ const uint8_t orig_pga = 6; // -3dB
void AM_fix_reset(const int vfo)
{ // reset the AM fixer
counter = 0;
prev_rssi[vfo] = 0;
am_gain_hold_counter[vfo] = 0;
@ -372,8 +380,6 @@ const uint8_t orig_pga = 6; // -3dB
#endif
am_fix_gain_table_index_prev[vfo] = 0;
// AM_fix_init(); // bootup calls this
}
// adjust the RX RF gain to try and prevent the AM demodulator from
@ -388,13 +394,6 @@ const uint8_t orig_pga = 6; // -3dB
int16_t diff_dB;
int16_t rssi;
#ifndef ENABLE_AM_FIX_TEST1
// -89dBm, any higher and the AM demodulator starts to saturate/clip/distort
const int16_t desired_rssi = (-89 + 160) * 2; // dBm to ADC sample
#endif
counter++;
// but we're not in FM mode, we're in AM mode
switch (gCurrentFunction)
@ -402,6 +401,7 @@ const uint8_t orig_pga = 6; // -3dB
case FUNCTION_TRANSMIT:
case FUNCTION_BAND_SCOPE:
case FUNCTION_POWER_SAVE:
counter = 0;
return;
case FUNCTION_FOREGROUND:
@ -414,6 +414,10 @@ const uint8_t orig_pga = 6; // -3dB
break;
}
if (counter > 0)
if (++counter >= 20) // limit display update rate to 200ms
counter = 0;
{ // sample the current RSSI level
// average it with the previous rssi (a bit of noise/spike immunity)
const int16_t new_rssi = BK4819_GetRSSI();
@ -427,7 +431,11 @@ const uint8_t orig_pga = 6; // -3dB
if (gCurrentRSSI[vfo] != new_rssi)
{
gCurrentRSSI[vfo] = new_rssi;
gUpdateDisplay = ((counter & 15u) == 0); // limit the screen update rate to once every 150ms
if (counter == 0)
{
counter = 1;
gUpdateDisplay = true;
}
}
}
@ -545,13 +553,21 @@ const uint8_t orig_pga = 6; // -3dB
if (gCurrentRSSI[vfo] != new_rssi)
{
gCurrentRSSI[vfo] = new_rssi;
gUpdateDisplay = ((counter & 15u) == 0); // limit the screen update rate to once every 150ms
if (counter == 0)
{
counter = 1;
gUpdateDisplay = true;
}
}
}
}
#ifdef ENABLE_AM_FIX_SHOW_DATA
gUpdateDisplay = ((counter & 15u) == 0); // limit the screen update rate to once every 150ms
if (counter == 0)
{
counter = 1;
gUpdateDisplay = true;
}
#endif
}
@ -568,6 +584,7 @@ const uint8_t orig_pga = 6; // -3dB
const int16_t gain_dB = lna_short_dB[lna_short] + lna_dB[lna] + mixer_dB[mixer] + pga_dB[pga];
if (s != NULL)
sprintf(s, "idx %2d %4ddB %3u", index, gain_dB, prev_rssi[vfo]);
counter = 1;
}
#endif