Module led4 

A device abstraction for a 4-digit, 7-segment LED display for text with optional animation and blinking.

See Led4Esp for the primary text/blinking example and Led4 for trait methods.

Limations: You can create up to two concurrent Led4Esp instances per program; a third is expected to fail at runtime because the led4 task pool uses pool_size = 2. Animation APIs support up to 16 steps per animation (ANIMATION_MAX_FRAMES).

This module provides device abstraction for controlling common-cathode 4-digit 7-segment LED displays. Supports displaying text and numbers with optional blinking.

Structs

AnimationFrame

Frame of animated text for Led4::animate_text.

Led4Esp

A device abstraction for a 4-digit, 7-segment LED display with blinking support.

Led4EspStatic

Static for the Led4Esp device.

OutputArray

Array of GPIO output pins for LED displays.

Enums

BlinkState

Blinking behavior for 4-digit LED displays.

Constants

ANIMATION_MAX_FRAMES

Maximum number of animation frames accepted by led4-style APIs.

Traits

Led4

Platform-agnostic 4-digit display contract.

Functions

circular_outline_animation

Creates a circular outline animation that chases around display edges.