micheleandClaude Sonnet 5
a7a5311c2c
Extends the existing FM/DAB ANTCAP EEPROM persistence pattern
(Eeprom24aa::writeFmAntCap/writeDabAntCap) to the crystal trim found by
POST /api/tuner/xtal-calibrate, which previously only applied live and
was lost on every reboot.
- Eeprom24aa gains readXtalCalibration()/writeXtalCalibration() at word
addresses 0x02 (ibias), 0x03 (ctun), 0x04-0x07 (xtalFreqHz,
big-endian), right after the existing FM/DAB ANTCAP bytes.
- HardwareBootstrap::boot() now boots ADAU1701 before Si4684 (needed so
the EEPROM read, which borrows ADAU1701's I2C bus, can happen before
Si4684's boot() call, which takes the crystal trim as an argument),
loads the saved trim if present, and falls back to the compiled-in
defaults (ibias=72, ctun=0, xtalFreqHz=19199750) otherwise.
- POST /api/tuner/xtal-calibrate now persists every successful live
recalibration automatically ("persisted":true/false in the response)
via a new saveXtalCalibration()/net::AntennaCalibration::saveXtal
bridge, mirroring the ANTCAP save pattern.
Verified live: boot log confirms "Xtal not calibrated" before the first
save, "Xtal calibration loaded: ibias=72 ctun=0 xtal_freq_hz=19199750"
after, surviving a reboot; DAB/FM tuning unaffected (DAB CNR 17-19dB,
locked).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
49 lines
1.4 KiB
C++
49 lines
1.4 KiB
C++
/**
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* @file antenna_calibration.cpp
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* @brief net::AntennaCalibration implementation over HardwareBootstrap.
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*
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* DigiRadio firmware — https://github.com/manvalan/DigiRadio
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*
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* Copyright 2026 Michele Bigi
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "antenna_calibration.hpp"
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#include "hardware_bootstrap.hpp"
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#include "si4684/Si4684Tuner.hpp"
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namespace antenna_calibration {
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namespace {
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/** Diagnostic-only, 2026-08-23: see net::AntennaCalibration::recalibrateXtal. */
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bool recalibrateXtal(std::uint8_t ibias, std::uint8_t ctun,
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std::uint32_t xtalFreqHz)
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{
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return static_cast<bool>(hardware::HardwareBootstrap::si4684Tuner()
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.recalibrateXtal(ibias, ctun, xtalFreqHz));
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}
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/** Persist to EEPROM, 2026-08-24: see net::AntennaCalibration::saveXtal. */
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bool saveXtal(std::uint8_t ibias, std::uint8_t ctun, std::uint32_t xtalFreqHz)
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{
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return hardware::HardwareBootstrap::saveXtalCalibration(ibias, ctun,
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xtalFreqHz);
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}
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} // namespace
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net::AntennaCalibration& bridge() noexcept
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{
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static net::AntennaCalibration instance{
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.save = &hardware::HardwareBootstrap::saveFmAntCapCalibration,
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.saveDab = &hardware::HardwareBootstrap::saveDabAntCapCalibration,
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.recalibrateXtal = &recalibrateXtal,
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.saveXtal = &saveXtal,
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};
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return instance;
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}
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} // namespace antenna_calibration
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