3 Commits

Author	SHA1	Message	Date
Ryan Malloy	a425b4c324	Add OLED display support, standardize Serial0 for UART output ... - Add SSD1306 128x64 OLED display with attenuation bar, dB readout, step counter, sweep indicator, and WiFi RSSI - Switch all debug output to Serial0 (UART0 via CH343) for consistent serial comms when USB CDC is not used - Remove unused USB.h includes from all source files - Add development notes to CLAUDE.md (no stty, serial config docs)	2026-02-08 14:10:44 -07:00
Ryan Malloy	fb835c9d5d	Fix ESP32-S2 build: USB.h, WDT API, remove duplicate flags ... - Add #include <USB.h> to all .cpp files (required for HWCDCSerial) - Use ESP-IDF v5.x esp_task_wdt_config_t struct instead of removed API - Remove duplicate ARDUINO_USB_MODE/CDC flags from platformio.ini (board definition already provides these)	2026-02-02 21:27:24 -07:00
Ryan Malloy	613611d37a	Add ESP32-S2 firmware for HMC472A attenuator control ... PlatformIO/Arduino firmware for WEMOS/LOLIN S2 Mini: - 6-bit GPIO control (GPIOs 1-6) with glitch-free register writes - REST API: /status, /set, /config, /sweep endpoints - Web UI with PCB green theme, slider, presets, pin visualization - NVS persistence of attenuation setting across power cycles - Sweep mode for automated attenuation stepping - mDNS (attenuator.local), OTA updates, watchdog	2026-02-02 21:24:29 -07:00