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Moved to lookup table based AM fix

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OneOfEleven
2023-09-23 09:36:07 +01:00
parent d874893a50
commit 2cbaeb7431
5 changed files with 168 additions and 108 deletions
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33
driver/bk4819.c
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@ -985,7 +985,38 @@ void BK4819_Idle(void)
void BK4819_ExitBypass(void)
{
BK4819_SetAF(BK4819_AF_MUTE);
BK4819_WriteRegister(BK4819_REG_7E, 0x302E);
// REG_7E
//
// <15> 0 AGC fix mode
// 1 = fix
// 0 = auto
//
// <14:12> 3 AGC fix index
// 3 ( 3) = max
// 2 ( 2)
// 1 ( 1)
// 0 ( 0)
// 7 (-1)
// 6 (-2)
// 5 (-3)
// 4 (-4) = min
//
// <11:6> 0 ???
//
// <5:3> 5 DC filter band width for Tx (MIC In)
// 0 ~ 7
// 0 = bypass DC filter
//
// <2:0> 6 DC filter band width for Rx (I.F In)
// 0 ~ 7
// 0 = bypass DC filter
//
BK4819_WriteRegister(BK4819_REG_7E, // 0x302E); // 0 011 000000 101 110
(0u << 15) // 0 AGC fix mode
| (3u << 12) // 3 AGC fix index
| (5u << 3) // 5 DC Filter band width for Tx (MIC In)
| (6u << 0)); // 6 DC Filter band width for Rx (I.F In)
}
void BK4819_PrepareTransmit(void)