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An interactive slideshow of images, built on an ATmega328p-microprocessor and an 240x240 ST7789 display
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README.md

Slideshow

This project is a relatively simple slideshow running on the Adafruit Feather 328P (an ATmega328p-microcontroller) using a simple button and a 240x240 LCD display with the ST7789-driver over SPI.

This project is written on Rust and uses a very minimal amount of libraries with the most significant being atmega-hal, a hardware abstraction layer for ATmega-microcontrollers. Images are stored in the program memory of the device and manually read using the lpm-instruction using inline-assembly because Rust itself does not produce this instruction in any scenario. The images are stored in the QOI-specification to save space, and they are decoded on-the-fly when rendering the images. Communication between the display and the microprocessor is done manually using a minimal SPI-utility within the atmega-hal crate.

Demonstration