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	db54d05bed	Makefile: use esptool directly, add LittleFS and erase targets ... PlatformIO's built-in upload breaks on the S2 Mini (1200bps USB touch reset disconnects the native USB port). All flash targets now call esptool directly with the correct S2 partition offsets: bootloader at 0x1000, firmware at 0x10000, LittleFS at 0x290000. Also adds USB.begin() before Serial.begin() in main.cpp — required for ESP32-S2 native USB-CDC to initialize properly.	2026-02-02 23:32:07 -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