Programming the board using a USB connection. (at Nucleo-G491RE)

[ParkPork]

Hello,

First, I would like to express my deepest gratitude for your assistance.

I intend to update the firmware using STM32CubeProgrammer with the following hardware configuration

Additionally, I have set the Boot0 pin to High using a jumper.

However, my PC is not detecting DFU mode.

Additionally, the programmer is not recognizing the USB connection.

Did I miss anything?

PS. The board has undergone a full chip erase.

[gbm]

You've missed the fact that the pullup is already present in STM32G. No need for an external one. ;)

[ParkPork]

The same problem occurs even in situations without pull-ups.

I am checking what I might be missing.

[gbm]

Just noticed that you are powering your board from USB. have you set the power jumpers correctly? What happens if you power it from ST-Link instead?

Also, if you use USB-C connector on the MCU side and C-to-C cable, make sure that 5k1 pulldowns are present on both CC lines.

[ParkPork]

I hadn't considered using the St-link power supply. I'll double-check this part.

The current connection interface uses a cable similar to the one in the attached photo.

 

[TDK]

If the ST-link chip on the board is not powered, it can keep the target chip in reset by keeping NRST low.

[ParkPork]

The board's 5V LED lights up normally. Even if the LED is lit normally, could the board still not be receiving power?

I'm a beginner developer and there's a lot I don't know. Thank you.