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Different USB iProduct descriptors for DFU in different processors

MButsch
Associate III

‎2023-09-26 06:02 AM

Hello,

We use a couple of different STM32's in our products and update them over USB via built-in the DFU bootloader.

I noticed that:

  • for a STM32G491, the iProduct descriptor reports "DFU in FS Mode"
  • for a STM32F302, the iProduct descriptor reports "STM32  BOOTLOADER"

Is there any significance to this difference or is that just differences in the bootloaders between the 2 models?

Thanks,

Mark

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2 REPLIES 2
TDK
Guru

‎2023-09-26 06:56 AM

Should function the same. There are a lot of "different" system bootloaders to support all the various chips.

TDK_0-1695736415687.png

 

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MButsch
Associate III
In response to TDK

‎2023-09-26 12:52 PM

I agree they "should" function the same, but I am seeing different behavior with the two parts I mentioned when "leaving" DFU mode.

Just exploring obvious differences.

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