CAN FD Adapter Firmware

A single unified codebase for CAN adapters in many form factors.

Based on the gs_usb protocol, this firmware is plug and play on most recent linux systems.

Feature	Supported?
Loopback	No
Listen-only	No
Tripple-sampling	No1
One-shot	Yes
Hardware timestamp	No
Bus error reporting	No
FD (ISO 11898-1:2015)	Yes
Bitrate switching	Yes
FD Non-ISO mode	No2
Presume ACK	No2
Classic CAN length 8 DLC	No2
Transceiver dely compensation	No2

1. Not supported by STM32G4.
2. Not supported by the GS USB/CAN driver.

Purchase

You can purchase CAN FD Adapters from our online store.

Firmware Update

The UMI command line tool is the easiest way to get the latest firmare.

umi adapter update

Firmware can also be updated manually using a tool like dfu-util.

The latest firmware is available on the GitHub releases page.

dfu-util -s 0x08000000:leave -D <new-firmware>.bin

Development

Prerequisites:

• Rust with the thumbv7em-none-eabihf target
• probe-rs
• flip-link

Debug

cargo run

Build

cargo build --release
# Output firmware binary
cargo objcopy --release -- -O binary firmware.bin
# Prepare for DFU upload
dfu-suffix --vid 1209 --pid 2323 --add firmware.bin

Release

Bump the version number in the Cargo.toml and then tag the desired commit with the version number and push to main.

git tag v0.0.0
git push --all