September 18th, 2021

This is a bugfix & maintenance release for Castor & Pollux's firmware, Gemini ♊️.

👉 Most users should download gemini-firmware-2021.09.18-release.uf2 👈

Please follow the firmware upgrade instructions in the user's guide to upgrade your device's firmware.

About the files

• The uf2 files can be installed using the firmware upgrade instructions in the user's guide.
• The elf files and are for testing & debugging and can be programmed using an appropriate debug probe.
• The release builds are built without debugging information.
• The debug builds are built with debugging information.

Build identifier

Each release of the firmware has a unique build ID. This ID can be seen when using the online settings editor and allows finding the exact firmware version on your device. The build IDs for this version are:

• Release: 2021.09.18 (release) on 09/18/2021 15:30 UTC with gcc 10.3.1 by stargirl@stargirls-mbp.lan
• Debug: 2021.09.18 (debug) on 09/18/2021 15:29 UTC with gcc 10.3.1 by stargirl@stargirls-mbp.lan

Changes from 2021.08.31

Firmware:

• Add support for mcp4728 devices with different addresses, since we used the a0 variant for rounds 1 & 2 and the a4 variant for round 3

User guide:

• Re-draw lfo waveshape when loading settings from device
• Fix firmware date check in settings editor.

Hardware:

• Add basic testkit adapter board

Factory:

• Save full adc/afe measurement data