Anyone Using CAN to Update Firmware?

[Richard Lowe]

Posted on February 15, 2018 at 10:12

I'd like to use the CAN Bus to upgrade firmware. I've read the

http://www.st.com/content/ccc/resource/technical/document/application_note/56/94/0c/7d/63/f6/4d/96/CD00264321.pdf/files/CD00264321.pdf/jcr:content/translations/en.CD00264321.pdf

 a few times and it makes sense, but I'd like to find some example of it working before I attempt to do it myself. Anyone using the embedded bootloader to upgrade firmware on the STM32 MCUs?

#can-communitation

[AvaTar]

Posted on February 15, 2018 at 11:22

We (my company) use CAN for firmware updates.

However, it is not a STM32, and uses UDS via ISO-TP (ISO 15765).

And since both are a bit more complex, we have it in a second-stage BL.

[Richard Lowe]

Posted on February 15, 2018 at 13:11

We've considered using CANOpen to implement ISO 15765 but haven't seen many bootloaders that would be compatible. Any tips you can offer would be nice.

[AvaTar]

Posted on February 15, 2018 at 13:24

Not me, unfortunately.

Just dealt with ISO-TP for the intended purpose, which is diagnostics/UDS.

You can try asking CiA directly (can-cia.org), in my experience they seem quite open.

[Richard Lowe]

Posted on May 28, 2018 at 21:59

Built in bootloader proved to be problematic. Secondary CAN bootloader is required for custom behavior and ease of update.