leddy-lib

Shared rendering primitives for Arduino-class simulations, Raspberry Pi agents, servers, and tests. The renderer provides a monochrome framebuffer, a compact 5×7 font, physical LED-chain addressing, and time-based scrolling for text of arbitrary length.

Core APIs

• render_message_frame turns a validated message and elapsed time into the current frame, including once, forever, and counted repeat behavior.
• scroll_cycle_duration_ms exposes the deterministic playback cycle length.
• FrameBuffer::device_order maps logical top-left pixels into the configured physical chain order for all four origins and optional serpentine wiring.
• FrameBuffer::row_major remains the canonical logical layout for previews and protocol-neutral tests.

cargo test

This repository is a Zed package. Its resolver-generated .zpkg.lock will be committed only after leddy-interfaces is published and resolvable.