NumDisplay

Raspberry Pi package for controlling the 7-segment numeric displays written in Julia.

The package supports several approaches:

• Direct method does not use any chips transforming input but it requires more GPIO pins. See DisplayDirect.
• BCD is a Binary-Coded Decimal chip which can be used to manage display with several digits. See DisplayBCD.
• SPI uses MAX7219/MAX7221 chip to control up to 8 digits 7-segment displays. See DisplaySPI.

Installation

Julia must be installed on Raspberry Pi. I have tested on v1.1.0 which can be installed with:

sudo apt update
sudo apt install julia

The package can be installed from Julia environment with:

] add https://github.com/metelkin/NumDisplay.jl.git

Notes

• To run the code you need the full access to GPIO. Run it under sudo privileges.

Example running the code from "test/run.jl".

sudo julia --project=. test/run.jl