Problem to set FDCAN2 in STM32CubeMX for STM32H562RGT6

[x314159]

Hello,

I am planning to use STM32H562RGT6 in my product to communicate and update my firmware via CAN FD.

To plan that, I am using STM32CubeMX 6.17.0, the datasheet and the AN2606 (Rev 70).

And I would like to use only one CAN FD to communicate and to update my firmware in this MCU. But it is impossible to do this in STM32CubeMX. I have only access to FDCAN1. And there are no FDCAN2 on the pins.

So, is it a problem in STM32CubeMX ? Or should we use FDCAN1 to do firmware updates via FDCAN for this MCU ?

PS: it is the same problem with the MCU STM32H562VGT6 (and maybe other similar MCUs)

[mƎALLEm]

Hello @x314159 and welcome to the ST community,

From the datasheet:

Only one FDCAN instance is available which is FDCAN1. So you can't use FDCAN bootloader as you need FDCAN2 instance available on the chip.

[mƎALLEm]

Ok by referring to Table 14., FDCAN2 is available in LQFP64 package.

Need to check internally what is wrong here!

Which is not the case of CubeMx which showing only FDCAN1 instance:

[mƎALLEm · Accepted solution]

Hello,

Getting back to you regarding this topic:

FDCAN2 is not available on STM32H562 devices even FDCAN2 pins are there but the instance is deactivated internally inside the chip.

Hope that answers your question.