BRNSystems/brnQuanFW
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AM fix gains adjusted

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This commit is contained in:
Krzysiek Egzmont
2023-10-25 23:24:45 +02:00
parent ec10aec0c4
commit 4a96dfa6ce
2 changed files with 23 additions and 17 deletions
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8
app/app.c
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@@ -518,8 +518,9 @@ void APP_StartListening(FUNCTION_Type_t Function, const bool reset_am_fix)
{ // RF RX front end gain
// original QS front end register settings
// 0x03BE 00000 011 101 11 110
const uint8_t orig_lna_short = 3; // 0dB
const uint8_t orig_lna = 2; // -14dB
const uint8_t orig_lna = 5; // -4dB
const uint8_t orig_mixer = 3; // 0dB
const uint8_t orig_pga = 6; // -3dB
@@ -538,11 +539,16 @@ void APP_StartListening(FUNCTION_Type_t Function, const bool reset_am_fix)
}
// AF gain - original QS values
if (gRxVfo->AM_mode){
BK4819_WriteRegister(0x48, 0xB3A8);
}
else {
BK4819_WriteRegister(BK4819_REG_48,
(11u << 12) | // ??? .. 0 to 15, doesn't seem to make any difference
( 0u << 10) | // AF Rx Gain-1
(gEeprom.VOLUME_GAIN << 4) | // AF Rx Gain-2
(gEeprom.DAC_GAIN << 0)); // AF DAC Gain (after Gain-1 and Gain-2)
}
#ifdef ENABLE_VOICE
if (gVoiceWriteIndex == 0) // AM/FM RX mode will be set when the voice has finished