Hello, I try to upload my STM32 F446RE using bootloader through CAN. I get the STLINK V3SET and the utility STM32CuebeProgrammer. But the connection with the target is impossible.

[Zephyr S]

I get few questionning:

• The STLINK does not detect any target voltage on the T_CAN_VCC pin, whereas I put 3.3V from my STM32 on it. What can I do ?
• The documentation says to put BOOT0 high and BOOT1 low. that's what I did. But connection's still impossible.. Do I have to let them high and low until I upload the microcontroller ? Or just few seconds in high and low state alow it to enter in bootloader mode ?

Maybe the second problem isn't really one because of the first blocking my handling. All I know is that is impossible to connect my target using STM32CubeProgrammer.

I would be grateful if anyone could help me to solve my problem.

Zephyr