dfu-util / Tickets / #205 Use transaction block number for address offset

#205 Use transaction block number for address offset

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Status: open

Owner: nobody

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Updated: 2024-08-19

Created: 2024-08-19

Creator: Horacio Saint Andre

Private: No

Hi, I've got a slight improvement on image downloading when using the block number for the address calculation instead of sending the new address before each chunk and a fixed block number =2. I've only tested it with a STM32F072.

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transaction-add-offset.patch

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Tormod Volden - 2024-08-19

Interesting, thanks! At a first view, this seems to make sense. It is limited to 65535-2 blocks though, but that can be dealt with if necessary. How much is the gain that you are seeing?

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- Horacio Saint Andre - 2024-08-19
  
  Around 47ms for a 120kB image and a 2kB block size (60 transactions).
  Indeed, I am not sure whether it would work for any combination of memory size/block size. As per AN3156, it seems to apply for all cortex-m series.
  
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Use transaction block number for address offset

Multiplatform USB DFU host utility

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#205 Use transaction block number for address offset

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