hmc472

warehack.ing/hmc472

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Commit Graph

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	86a5db5b08	Optimize pin mapping for direct bitwise GPIO ops Rewire GPIO↔HMC472A so GPIO(n) = step bit (n-1): GPIO1→V6(0.5dB), GPIO2→V5(1dB), ... GPIO6→V1(16dB) This enables single-instruction GPIO updates: GPIO.out_w1tc = (step & 0x3F) << 1 GPIO.out_w1ts = (~step) & 0x7E Replaces 28-line loop with 4-line bitwise code.	2026-02-03 00:28:33 -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

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

86a5db5b08

Optimize pin mapping for direct bitwise GPIO ops

Rewire GPIO↔HMC472A so GPIO(n) = step bit (n-1):
  GPIO1→V6(0.5dB), GPIO2→V5(1dB), ... GPIO6→V1(16dB)

This enables single-instruction GPIO updates:
  GPIO.out_w1tc = (step & 0x3F) << 1
  GPIO.out_w1ts = (~step) & 0x7E

Replaces 28-line loop with 4-line bitwise code.

2026-02-03 00:28:33 -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

3 Commits