STM32CubeProgrammer v2.19.0 USB DFU does not complete the connection

Hans T · ‎2025-03-17

Hello,
There seems to be a bug in Stm32CubeProgrammer v2.19.0

I connect the STM32F767 with USB1 (DFU).

When I press the CONNECT button, the connection stops at 44 bytes.

the connection is "Not connected"

however, I can now download a program.

Aziz BRIGUI · ‎2025-03-25

Not being able to read SRAM @0x20000000 via USB is expected since the first 16KB are used by bootloader code and are not accessible. You can successfully read SRAM contents starting from @0x20004000.

The "Not connected" not toggling is just a GUI bug and will be fixed in a future release. To work around the button freezing, you can perform a read operation.

Update: internal tracking number: 206090. Issue will be fixed in the next release.

Aziz

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View solution in original post

STOne-32 · ‎2025-03-17

Dear @Hans T ,

Can you type in Read Address the RAM address @0x20000000 : and see/send the message/log after reading ?

Thank you. @Aziz BRIGUI your help is appreciated

STOne-32.

Hans T · ‎2025-03-18

Hello.

I can't read the data with USB,

But parallel with the JTAG interface in HOTPLUG mode, I read this:

Aziz BRIGUI · ‎2025-03-25

Hello @Hans T,

Not being able to read SRAM @0x20000000 via USB is expected since the first 16KB are used by bootloader code and are not accessible. You can successfully read SRAM contents starting from @0x20004000.

The "Not connected" not toggling is just a GUI bug and will be fixed in a future release. To work around the button freezing, you can perform a read operation.

Update: internal tracking number: 206090. Issue will be fixed in the next release.

Aziz

In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.

Hans T · ‎2025-04-25

I just tested version V2.10.0.
With this version I have no problem

Aziz BRIGUI · ‎2025-04-25

Hello @Hans T,

Yes it is a regression and will be fixed in CubeProgrammer v2.20. It's strictly a graphical issue.

Aziz

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