Yukihiro "Matz" Matsumoto 5931a96a17 hw-spi: add SPI peripheral gem for embedded platforms ...

Add hw-spi gem with SPI communication support:
- Common Ruby API with write, read, and full-duplex transfer
- ports/esp32/ using ESP-IDF SPI master driver
- ports/rp2040/ using Pico SDK

Based on picoruby-spi by HASUMI Hitoshi.

Co-authored-by: Claude <noreply@anthropic.com>

2026-04-23 19:25:38 +09:00

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mruby

hw-spi: add SPI peripheral gem for embedded platforms

2026-04-23 19:25:38 +09:00