eglib

A portable C library for interfacing with LCD, OLED, e-ink / e-paper displays, usable from microcontrollers to Linux.

Its design provides a simple but coherent interface enjoyable from both the perspective of end users or HAL / display driver developers.

The name eglib originally came from Experimental Graphics Library, but as it matured, e can stand for exceptional, extraordinary, exquisite, elegant…

Features

• Hardware Abstraction Layer (HAL).

  • Supports different data buses such as 4-Wire SPI and I2C.

  • Easy to develop reusable drivers for different platforms. - Drivers have accept configuration for things like I/O pins. - Display drivers provide bus specific configuration.

• Display drivers.

  • Common interface regardless of data bus.

  • Supports configuration

    • Same controller driver works with different screen sizes or boards.

    • Allows configuration of things like color depth.

  • Support for specific commands: color inversion, scrolling, brightness etc.

  • Accelerated line drawing routines.

  • Supports a wide range of:

    • Display types: LCD, OLED, e-ink/e-paper.

    • Color depths: black/white, black/white/red|yellow (e-ink / e-paper), grayscale to full color.

• Frame buffer

  • Can be used on top of any display driver.

  • Faster refresh rates.

  • No visual artifacts from drawing directly on the display memory.

  • Partial display updates.

• Drawing

  • Many functions for lines, boxes, circle etc.

  • Clipping box support.