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

datasheet

Add SVG vector extractions from datasheet

2026-02-02 13:42:21 -07:00

docs

Initial commit: HMC472A attenuator module reference materials

2026-02-02 13:41:13 -07:00

firmware

Optimize pin mapping for direct bitwise GPIO ops

2026-02-03 00:28:33 -07:00

hardware

Optimize pin mapping for direct bitwise GPIO ops

2026-02-03 00:28:33 -07:00

marketing

Initial commit: HMC472A attenuator module reference materials

2026-02-02 13:41:13 -07:00

CLAUDE.md

Track CLAUDE.md with local resource inventory

2026-02-02 13:43:02 -07:00

Description

HMC472A digital RF attenuator controller — ESP32-S3 firmware with USB CDC serial and WiFi REST API

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