This is firmware for certain STM32F042x/STM32F072xB-based USB-CAN adapters, notably:
- candleLight: https://github.com/HubertD/candleLight (STM32F072xB)
- cantact: http://linklayer.github.io/cantact/ (STM32F042x6)
- canable (cantact clone): http://canable.io/ (STM32F042x6)
- USB2CAN: https://github.com/roboterclubaachen/usb2can (STM32F042x6)
- CANAlyze: https://kkuchera.github.io/canalyze/ (STM32F042x6)
Of important note is that the common STM32F103 will NOT work with this firmware because its hardware cannot use both USB and CAN simultaneously.
This implements the interface of the mainline linux gs_usb kernel module and works out-of-the-box with linux distros packaging this module, e.g. Ubuntu.
Be aware that there is a bug in the gs_usb module in linux<4.5 that can crash the kernel on device removal.
Here is a fixed version that should also work for older kernels: https://github.com/HubertD/socketcan_gs_usb
The Firmware also implements WCID USB descriptors and thus can be used on recent Windows versions without installing a driver.
Building requires arm-none-eabi-gcc toolchain.
sudo apt-get install gcc-arm-none-eabi mkdir build cd build cmake .. -DCMAKE_TOOLCHAIN_FILE=../cmake/gcc-arm-none-eabi-8-2019-q3-update.cmake # or, # cmake-gui .. # don't forget to specify the cmake toolchain file before configuring. make canalyze_fw # one of candleLight_fw / usb2can_fw / cantact_fw / canalyze_fw / canable_fw # alternately, each board target may be disabled as cmake options
Flashing candleLight on linux: (source: https://wiki.linklayer.com/index.php/CandleLightFirmware)
- Flashing requires the dfu-util tool. On Ubuntu, this can be installed with
sudo apt install dfu-util.
- compile as above, or download the current binary release: gsusb_cantact_8b2b2b4.bin
- Disconnect the USB connector from the CANtact, short the BOOT pins, then reconnect the USB connector. The device should enumerate as "STM32 BOOTLOADER".
- Flash the device with:
sudo dfu-util --dfuse-address -d 0483:df11 -c 1 -i 0 -a 0 -s 0x08000000 -D CORRECT_FIRWARE.binwhere CORRECT_FIRWARE is the name of the desired .bin.
- Disconnect the USB connector, un-short the BOOT pins, and reconnect. The device is now flashed!
- If dfu-util fails due to permission issues on Linux, you may need additional udev rules. Consult your distro's documentation and see