BRNSystems/brnQuanFW
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Real AM fix attempt, messy

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This commit is contained in:
Krzysiek Egzmont
2023-12-05 23:13:21 +01:00
parent 52bdd408c4
commit e95f577074
13 changed files with 144 additions and 157 deletions
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27
am_fix.c
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@@ -186,7 +186,7 @@ static const t_gain_table gain_table[] =
{0x03FF, 0}, // 91 .. 3 7 3 7 .. 0dB 0dB 0dB 0dB .. 0dB
};
static const unsigned int original_index = 90;
static const unsigned int original_index = 85;
#ifdef ENABLE_AM_FIX_SHOW_DATA
// display update rate
@@ -206,9 +206,6 @@ int16_t prev_rssi[2] = {0, 0};
// to help reduce gain hunting, peak hold count down tick
unsigned int hold_counter[2] = {0, 0};
// used to correct the RSSI readings after our RF gain adjustments
int16_t rssi_gain_diff[2] = {0, 0};
// used to limit the max RF gain
const unsigned max_index = ARRAY_SIZE(gain_table) - 1;
@@ -233,7 +230,6 @@ void AM_fix_reset(const unsigned vfo)
prev_rssi[vfo] = 0;
hold_counter[vfo] = 0;
rssi_gain_diff[vfo] = 0;
gain_table_index_prev[vfo] = 0;
}
@@ -287,9 +283,10 @@ void AM_fix_10ms(const unsigned vfo, bool force)
#ifdef ENABLE_AM_FIX_SHOW_DATA
{
int16_t new_rssi = rssi - rssi_gain_diff[vfo];
if (gCurrentRSSI[vfo] != new_rssi) { // rssi changed
gCurrentRSSI[vfo] = new_rssi;
static int16_t lastRssi;
if (lastRssi != rssi) { // rssi changed
lastRssi = rssi;
if (counter == 0) {
counter = 1;
@@ -353,16 +350,8 @@ void AM_fix_10ms(const unsigned vfo, bool force)
gain_table_index_prev[vfo] = index;
BK4819_WriteRegister(BK4819_REG_13, gain_table[index].reg_val);
// offset the RSSI reading to the rest of the firmware to cancel out the gain adjustments we make
// RF gain difference from original QS setting
rssi_gain_diff[vfo] = ((int16_t)gain_table[index].gain_dB - gain_table[original_index].gain_dB) * 2;
}
// save the corrected RSSI level
gCurrentRSSI[vfo] = rssi - rssi_gain_diff[vfo];
#ifdef ENABLE_AM_FIX_SHOW_DATA
if (counter == 0) {
counter = 1;
@@ -381,11 +370,5 @@ void AM_fix_print_data(const unsigned vfo, char *s) {
}
#endif
int16_t AM_fix_get_rssi_gain_diff(const unsigned vfo)
{
if(vfo > 1)
return 0;
return rssi_gain_diff[vfo];
}
#endif