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 C library for hardware control. It recreates some of the Waveshare GUI 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 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.