March 1st, 2021

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

👉 Most users should download gemini-firmware-2021.03.1-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: 2021.03.1 (release) on 03/01/2021 19:08 UTC with gcc 10.2.1 by stargirl@stargirls-mbp.lan
• Debug: 2021.03.1 (debug) on 03/01/2021 19:08 UTC with gcc 10.2.1 by stargirl@stargirls-mbp.lan

Changes from 2021.02.25

Factory:

• Add firmware version check to monitor and ability to update the firmware
• Check firmware version when running monitor

Firmware:

• Add sysex command to reset into the bootloader
• Add wntr_bootloader to allow resetting into the bootloader
• Fix reference to non-existent file in scripts/samd21g18a.ld
• Update libwinter

Hardware/progboard:

• Add dedicated jack for interfacing with knob inputs