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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51
driver/bk4819.c
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@@ -55,7 +55,7 @@ void BK4819_Init(void)
BK4819_WriteRegister(BK4819_REG_37, 0x1D0F);
BK4819_WriteRegister(BK4819_REG_36, 0x0022);
BK4819_InitAGC();
BK4819_InitAGC(false);
BK4819_SetAGC(true);
BK4819_WriteRegister(BK4819_REG_19, 0b0001000001000001); // <15> MIC AGC 1 = disable 0 = enable
@@ -263,7 +263,7 @@ void BK4819_SetAGC(bool enable)
// }
}
void BK4819_InitAGC()
void BK4819_InitAGC(bool amModulation)
{
// REG_10, REG_11, REG_12 REG_13, REG_14
//
@@ -308,13 +308,56 @@ void BK4819_InitAGC()
BK4819_WriteRegister(BK4819_REG_12, 0x037B); // 0x037B / 000000 11 011 11 011 / -24dB
BK4819_WriteRegister(BK4819_REG_11, 0x027B); // 0x027B / 000000 10 011 11 011 / -43dB
BK4819_WriteRegister(BK4819_REG_10, 0x007A); // 0x007A / 000000 00 011 11 010 / -58dB
BK4819_WriteRegister(BK4819_REG_14, 0x0019); // 0x0019 / 000000 00 000 11 001 / -79dB
BK4819_WriteRegister(BK4819_REG_49, (0 << 14) | (84 << 7) | (56 << 0)); //0x2A38 / 00 1010100 0111000 / 84, 56
if(amModulation) {
BK4819_WriteRegister(BK4819_REG_14, 0x0000);
BK4819_WriteRegister(BK4819_REG_49, (0 << 14) | (50 << 7) | (32 << 0));
}
else{
BK4819_WriteRegister(BK4819_REG_14, 0x0019); // 0x0019 / 000000 00 000 11 001 / -79dB
BK4819_WriteRegister(BK4819_REG_49, (0 << 14) | (84 << 7) | (56 << 0)); //0x2A38 / 00 1010100 0111000 / 84, 56
}
BK4819_WriteRegister(BK4819_REG_7B, 0x8420);
}
int8_t BK4819_GetRxGain_dB(void)
{
union {
struct {
uint16_t pga:3;
uint16_t mixer:2;
uint16_t lna:3;
uint16_t lnaS:2;
};
uint16_t __raw;
} agcGainReg;
union {
struct {
uint16_t _ : 5;
uint16_t agcSigStrength : 7;
int16_t gainIdx : 3;
uint16_t agcEnab : 1;
};
uint16_t __raw;
} reg7e;
reg7e.__raw = BK4819_ReadRegister(BK4819_REG_7E);
uint8_t gainAddr = reg7e.gainIdx < 0 ? BK4819_REG_14 : BK4819_REG_10 + reg7e.gainIdx;
agcGainReg.__raw = BK4819_ReadRegister(gainAddr);
int8_t lnaShortTab[] = {-28, -24, -19, 0};
int8_t lnaTab[] = {-24, -19, -14, -9, -6, -4, -2, 0};
int8_t mixerTab[] = {-8, -6, -3, 0};
int8_t pgaTab[] = {-33, -27, -21, -15, -9, -6, -3, 0};
return lnaShortTab[agcGainReg.lnaS] + lnaTab[agcGainReg.lna] + mixerTab[agcGainReg.mixer] + pgaTab[agcGainReg.pga];
}
int16_t BK4819_GetRSSI_dBm(void)
{
uint16_t rssi = BK4819_GetRSSI();
return (rssi / 2) - 160;// - BK4819_GetRxGain_dB();
}
void BK4819_ToggleGpioOut(BK4819_GPIO_PIN_t Pin, bool bSet)
{