diff options
Diffstat (limited to 'host/lib/include/uhdlib/usrp')
| -rw-r--r-- | host/lib/include/uhdlib/usrp/common/adf535x.hpp | 39 |
1 files changed, 28 insertions, 11 deletions
diff --git a/host/lib/include/uhdlib/usrp/common/adf535x.hpp b/host/lib/include/uhdlib/usrp/common/adf535x.hpp index e8f4a9309..03efecc36 100644 --- a/host/lib/include/uhdlib/usrp/common/adf535x.hpp +++ b/host/lib/include/uhdlib/usrp/common/adf535x.hpp @@ -96,8 +96,10 @@ const double ADF535X_MIN_OUT_FREQ = (3.4e9 / 64); const double ADF535X_PHASE_RESYNC_TIME = 400e-6; const uint32_t ADF535X_MOD1 = 16777216; -const uint32_t ADF535X_MAX_MOD2 = 16383; -const uint32_t ADF535X_MAX_FRAC2 = 16383; +const uint32_t ADF5355_MAX_MOD2 = 16383; +const uint32_t ADF5355_MAX_FRAC2 = 16383; +const uint32_t ADF5356_MAX_MOD2 = 268435455; +const uint32_t ADF5356_MAX_FRAC2 = 268435455; // const uint16_t ADF535X_MIN_INT_PRESCALER_89 = 75; } // namespace @@ -205,7 +207,7 @@ public: //----------------------------------------------------------- // Set VCO band divider - _regs.vco_band_div = static_cast<uint8_t>(ceil(_pfd_freq / 2.4e6)); + _regs.vco_band_div = _set_vco_band_div(_pfd_freq); //----------------------------------------------------------- // Set ADC delay (code from ADI driver) @@ -342,6 +344,7 @@ public: } protected: + uint8_t _set_vco_band_div(double); double _set_frequency(double, double, bool); uhd::meta_range_t _get_charge_pump_current_range(); void _commit(); @@ -361,6 +364,12 @@ private: // Members // ADF5355 Functions template <> +inline uint8_t adf535x_impl<adf5355_regs_t>::_set_vco_band_div(double pfd_freq) +{ + return static_cast<uint8_t>(ceil(pfd_freq / 2.4e6)); +} + +template <> inline double adf535x_impl<adf5355_regs_t>::_set_frequency( double target_freq, double freq_resolution, bool flush) { @@ -420,9 +429,9 @@ inline double adf535x_impl<adf5355_regs_t>::_set_frequency( const double gcd = double( uhd::math::gcd(static_cast<int>(_pfd_freq), static_cast<int>(freq_resolution))); const auto MOD2 = static_cast<uint16_t>( - std::min(floor(_pfd_freq / gcd), static_cast<double>(ADF535X_MAX_MOD2))); + std::min(floor(_pfd_freq / gcd), static_cast<double>(ADF5355_MAX_MOD2))); const auto FRAC2 = static_cast<uint16_t>( - std::min(ceil(residue * MOD2), static_cast<double>(ADF535X_MAX_FRAC2))); + std::min(ceil(residue * MOD2), static_cast<double>(ADF5355_MAX_FRAC2))); const double coerced_vco_freq = _pfd_freq * (_fb_after_divider ? rf_divider : 1) @@ -492,6 +501,12 @@ inline void adf535x_impl<adf5355_regs_t>::_commit() // ADF5356 Functions template <> +inline uint8_t adf535x_impl<adf5356_regs_t>::_set_vco_band_div(double pfd_freq) +{ + return static_cast<uint8_t>(ceil(pfd_freq / 1.6e6)); +} + +template <> inline double adf535x_impl<adf5356_regs_t>::_set_frequency( double target_freq, double freq_resolution, bool flush) { @@ -550,10 +565,10 @@ inline double adf535x_impl<adf5356_regs_t>::_set_frequency( const double gcd = double( uhd::math::gcd(static_cast<int>(_pfd_freq), static_cast<int>(freq_resolution))); - const auto MOD2 = static_cast<uint16_t>( - std::min(floor(_pfd_freq / gcd), static_cast<double>(ADF535X_MAX_MOD2))); - const auto FRAC2 = static_cast<uint16_t>( - std::min(round(residue * MOD2), static_cast<double>(ADF535X_MAX_FRAC2))); + const auto MOD2 = static_cast<uint32_t>( + std::min(floor(_pfd_freq / gcd), static_cast<double>(ADF5356_MAX_MOD2))); + const auto FRAC2 = static_cast<uint32_t>( + std::min(round(residue * MOD2), static_cast<double>(ADF5356_MAX_FRAC2))); const double coerced_vco_freq = _pfd_freq * (_fb_after_divider ? rf_divider : 1) @@ -575,8 +590,10 @@ inline double adf535x_impl<adf5356_regs_t>::_set_frequency( /* Update registers */ _regs.int_16_bit = INT; _regs.frac1_24_bit = FRAC1; - _regs.frac2_msb = FRAC2; - _regs.mod2_msb = MOD2; + _regs.frac2_lsb = narrow_cast<uint16_t>(FRAC2 & 0x3FFF); + _regs.mod2_lsb = narrow_cast<uint16_t>(MOD2 & 0x3FFF); + _regs.frac2_msb = narrow_cast<uint16_t>(FRAC2 >> 14); + _regs.mod2_msb = narrow_cast<uint16_t>(MOD2 >> 14); _regs.phase_24_bit = 0; if (flush) |