https://github.com/v79/khartoum

A library and app to display text and images on an Raspberry Pi eInk display
https://github.com/v79/khartoum

epaper kotlin-native raspberrypi

Last synced: 6 days ago
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A library and app to display text and images on an Raspberry Pi eInk display

• Host: GitHub
• URL: https://github.com/v79/khartoum
• Owner: v79
• Created: 2024-09-06T06:56:16.000Z (4 months ago)
• Default Branch: master
• Last Pushed: 2024-09-28T08:09:20.000Z (3 months ago)
• Last Synced: 2024-12-25T05:52:41.133Z (10 days ago)
• Topics: epaper, kotlin-native, raspberrypi
• Language: C
• Homepage:
• Size: 1.68 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 6
• Metadata Files:
  • Readme: README.md

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README

        
## Khartoum

Experimenting with Waveshare ePaper for the Raspberry Pi

Writing code in Kotlin Native to control and display images and text on a Waveshare ePaper HAT for the Raspbery Pi.

Makes use of the [bcm2835](https://www.airspayce.com/mikem/bcm2835/index.html) C library for hardware control. It recreates some of the [Waveshare GUI C](https://github.com/waveshare/e-Paper/tree/master/RaspberryPi%26JetsonNano/c) example functions, in Kotlin, in a library I am calling *Khartoum*. So far, the following functions are available:

The __Khartoum__ binary must be run as root (`sudo -E ./Khartoum.kexe`) on the Raspberry Pi.

### Libraries used

- Kotlinx serialization

- Kotlinx datetime

- Native c-libraries:

  - libCurl

  - [bcm2835](https://www.airspayce.com/mikem/bcm2835/index.html) C library

### Links and references

### Spotify

Requires two environment variables to be set:

- SPOTIFY_CLIENT

- SPOTIFY_SECRET

Getting these is quite complicated.

Need the `-E` option to be passed to sudo for them to be available.