"Built in DFU firmware"... Not working?

[devinw]

It is my understanding from watching this video from ST:

 

https://www.youtube.com/watch?v=Kx7yWVi8kbU

That many STM32 chips come with a built in bootloader in ROM that can be accessed by pulling the BOOT0 pin high.

 

However, I just took a couple of brand new STM32 blue pills out of the package and was not able to see the USB device enumerated, and when I opened STM32 Cube Programmer and select USB, it sees nothing and says "NO DFU DEVICE FOUND"

 

The blue pills are a super basic board and have jumpers to pull BOOT0 and BOOT1 high, so I would think this would work. ST Application Note AN3156 says that the STM32 chip on this board support the DFU built in bootloader, so I'm not sure what's going on here. Anyone have any light to shed on this?

[Dor_RH]

Hello @devinw,

Here are some steps that can help you resolve issues related to DFU firmware:

• Check BOOT0 and BOOT1 Pins:

   Ensure that the BOOT0 pin is set to high (1) and BOOT1 pin is set to low (0).

• Connect USB Cable:

 Connect the USB cable to the board and your computer. Ensure the cable is a data cable and not just a charging cable.

• Device Manager (Windows)

 On Windows, open Device Manager and check if any new devices appear when you connect the STM32 board.

• Driver Installation:

 Ensure that the necessary drivers for STM32 DFU mode are installed. You can download the STM32 USB drivers from the STMicroelectronics website.

• STM32CubeProgrammer:

Open STM32CubeProgrammer and select the USB interface. If the device is not detected, try refreshing the connection or restarting the software.

Also, you can refer to:

- ST Application Note AN3156 provides detailed information on the STM32 bootloader and might offer additional insights.

- STM32CubeProgrammer User Manual can help you understand how to use the software effectively.

I hope my answer has helped you. When your question is answered, please select this topic as solution that answered you, it will help others find that answer faster.

Thanks for your contribution.

Dor_RH

[devinw]

Thanks for the suggestions. I'm actually on MacOS, so I would think drivers wouldn't be necessary as with Windows with, if it is class-compliant, but maybe that's an issue too?

 

Ascha.3 below suggests that for this chip that only USART1 is supported so a USB-serial adapter would be required.

[MM..1]

USB connector on board not equal to app MCU have USB. And AN2606 list all info about system bootloaders.

Then better is change Not working to Not exist DFU...

[AScha.3]

>That many STM32 chips come with a built in bootloader in ROM that can be accessed by pulling the BOOT0 pin high.

More or better: all cpus...have a bootloader.

>I just took a couple of brand new STM32 blue pills out of the package and was not able to see the USB device enumerated

Read AN2606 about bootloader and its capabilities in different STM32 series.

 

So : you can start the bootloader (boot0 hi ) on a BluePill , but need a serial/TTL to USB adapter to connect to the uart1 on the F103C8 ( or CB) . No bootloader here on USB -> PC.

[mƎALLEm]

 

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@devinw wrote:

However, I just took a couple of brand new STM32 blue pills out of the package and was not able to see the USB device enumerated

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Hello,

ST resources are only dedicated to supporting genuine ST products. We are not committed to ensuring that clones/fakes products work properly with the firmware we provide.

We suggest to purchase a genuine products and purchase them from known and trusted distributors.

Thank you for your understanding.