USBCANFD DUAL

Overview

The USBCANFD DUAL is a high-performance 2-channel USB to CAN FD adapter board supporting data rates up to 8 Mbps. More information can be found on the can-module.com website.

Hardware

The USBCANFD DUAL board is equipped with an STM32G4 microcontroller and features galvanic isolation, independent status LEDs for both CAN channels, and software-configurable boot settings for entering the built-in bootloader mode.

Default Zephyr Peripheral Mapping

  • CAN_RX1/BOOT0 : PB8

  • CAN_TX1 : PB9

  • CAN_RX2 : PB5

  • CAN_TX2 : PB6

  • ledRX1 : PA6

  • ledTX1 : PA5

  • ledRX2 : PA4

  • ledTX2 : PA3

  • USB_DN : PA11

  • USB_DP : PA12

  • SWDIO : PA13

  • SWCLK : PA14

  • NRST : PG10

Supported Features

The usbcanfd_dual board supports the hardware features listed below.

on-chip / on-board
Feature integrated in the SoC / present on the board.
2 / 2
Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files.
vnd,foo
Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.

System Clock

The FDCAN1 and FDCAN2 peripherals are driven by PLLQ, which has a frequency of 80 MHz.

Programming and Debugging

The usbcanfd_dual board supports the runners and associated west commands listed below.

flash debug

Build and flash applications as usual (see Building an Application and Run an Application for more details).

Flashing

Flashing via USB DFU requires access to the built-in ROM bootloader. Since the board does not have a physical BOOT0 pin, entry into DFU mode must be managed via option bytes. Use an external debugger (such as ST-LINK) to change the nswBoot0 bit to 1 to enter DFU mode. After flashing the firmware via USB DFU, you must change the nswBoot0 bit back to 0 to ensure normal boot behavior from Flash memory.

Alternatively, you can flash the board directly using an ST-LINK debuggers.

Here is an example for the Blinky application.

# From the root of the zephyr repository
west build -b usbcanfd_dual samples/basic/blinky
west flash

References