- main.c: file-header comment describing the hardware and operation, logic
split into named phases (sleep_until_interrupt, wake_peripheral_rails,
take_counts_snapshot, send_wheel_counts_report, handle_minute_alarm,
init_all_hardware); shared state renamed to say what it is and made static.
- rfm69.c: reorganized into six labeled sections; cond_1/2/3 and hash scratch
globals replaced by a reply_acknowledges() helper with clear locals; packet
layout and every init register write documented.
- LOG() macro (compiled out when DO_UART is off) replaces the #if DO_UART
blocks that obscured the logic.
- Drivers: file-header comments; named RTC_REG_*/RTC_ALM_MASK_BIT constants;
EEPROM spool scheme documented; ADC_CHANNEL_BANDGAP named; repeated pin
if/else helpers collapsed to SET_PIN_TO().
- Removed unused globals/buffers and commented-out code; ran clang-format
with the project style.
Register writes and radio protocol are byte-identical. Builds clean under
-Wall -Wextra on gnu17 and c23; flash 13028 -> 12830 B, static RAM
1038 -> 999 B.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YVJKatfeMJjAmuH9KYiLuv
thebears
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