hmc472/platformio_local.ini.example at fee8d9c1f99c0e843616d7073918dbf78757e9b8 - hmc472 - Git @ Supported Systems

warehack.ing/hmc472

Ryan Malloy fee8d9c1f9 Add USB CDC serial command interface for RF test bench control

Line-based JSON protocol over the ESP32-S3 native USB OTG port,
providing deterministic sub-millisecond attenuator control without
WiFi interference. Runs alongside the existing REST API.

Commands: identify, status, config, set, sweep, sweep_stop
Protocol: usb-serial-json-v1 (one JSON object per \n-terminated line)

Also addresses pre-existing reliability issues found during review:
- Thread safety: FreeRTOS mutex in Attenuator class (web server
  callbacks run on async_tcp task, not loop())
- NVS flash wear: skip persist during sweep, save on stop
- WiFi credentials: moved to gitignored platformio_local.ini
- Shared header: sweep.h replaces duplicated extern declarations

2026-02-18 13:46:52 -07:00

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 ; Copy this file to platformio_local.ini and fill in your WiFi credentials.
 ; platformio_local.ini is gitignored and will not be committed.
 [wifi]
 build_flags =
     '-DWIFI_SSID="your_ssid_here"'
     '-DWIFI_PASS="your_password_here"'