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Improving AFC

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This commit is contained in:
Andy CA6JAU 2017-03-14 21:18:08 -03:00
parent 5101ea6abd
commit 35ec7fdbd1
2 changed files with 40 additions and 17 deletions
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27
ADF7021.cpp
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@ -142,6 +142,7 @@ void CIO::ifConf()
uint32_t ADF7021_REG4 = 0;
uint32_t ADF7021_REG10 = 0;
uint32_t ADF7021_REG13 = 0;
uint32_t AFC_OFFSET = 0;
// Toggle CE pin for ADF7021 reset
CE_pin(LOW);
@ -171,17 +172,19 @@ void CIO::ifConf()
div2 = 1U;
}
#if defined(ADF7021_ENABLE_AFC)
if(m_dstarEnable)
AFC_OFFSET = AFC_OFFSET_DSTAR;
else if(m_dmrEnable)
AFC_OFFSET = AFC_OFFSET_DMR;
else if(m_ysfEnable)
AFC_OFFSET = AFC_OFFSET_YSF;
else if(m_p25Enable)
AFC_OFFSET = AFC_OFFSET_P25;
if( div2 == 1U )
divider = (m_frequency_rx - 100000 + 1000) / (ADF7021_PFD / 2U);
divider = (m_frequency_rx - 100000 + AFC_OFFSET) / (ADF7021_PFD / 2U);
else
divider = (m_frequency_rx - 100000 + 2000) / ADF7021_PFD;
#else
if( div2 == 1U )
divider = (m_frequency_rx - 100000) / (ADF7021_PFD / 2U);
else
divider = (m_frequency_rx - 100000) / ADF7021_PFD;
#endif
divider = (m_frequency_rx - 100000 + (2*AFC_OFFSET)) / ADF7021_PFD;
N_divider = floor(divider);
divider = (divider - N_divider) * 32768;
@ -231,7 +234,7 @@ void CIO::ifConf()
ADF7021_REG4 |= (uint32_t) 0b10 << 8;
ADF7021_REG4 |= (uint32_t) ADF7021_DISC_BW_DSTAR << 10; // Disc BW
ADF7021_REG4 |= (uint32_t) ADF7021_POST_BW_DSTAR << 20; // Post dem BW
ADF7021_REG4 |= (uint32_t) 0b00 << 30; // IF filter
ADF7021_REG4 |= (uint32_t) 0b10 << 30; // IF filter
ADF7021_REG13 = (uint32_t) 0b1101 << 0; // register 13
ADF7021_REG13 |= (uint32_t) ADF7021_SLICER_TH_DSTAR << 4; // slicer threshold
@ -341,10 +344,6 @@ void CIO::ifConf()
AD7021_control_word = 0x000E000F;
Send_AD7021_control();
// IF FINE CAL (fine cal, defaults) (6)
AD7021_control_word = ADF7021_REG6;
Send_AD7021_control();
// AGC (auto, defaults) (9)
AD7021_control_word = 0x000231E9;
Send_AD7021_control();