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Patching Pulse Oximeter Firmware

(stefan-gloor.ch)
50 points stgl | 1 comments | 01 Dec 25 14:34 UTC | HN request time: 0.196s | source
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rossant ◴[07 Dec 25 12:43 UTC] No.46181301[source]▶
> As a side note: replacing the chip took longer than expected. I accidentally ordered a GD32F350R8T6, instead of the GD32F350RBT6 that was in the device originally. These two types differ in their flash sizes: 64 kB vs 128 kB. Don’t ask me why GigaDevice thought this naming scheme and this font was a good idea

An 8 looking almost exactly like a B. What a terrible idea.

replies(2): >>46181608 #>>46181976 #
1. 05 ◴[07 Dec 25 14:39 UTC] No.46181976[source]▶
Blame STM. Those clones copy (..among other things) the naming convention from STMicroelectronics parts like stm32f103c8t6/stm32f103cBt6. Guess what's the only difference between those.

Oh, and .. since STM likes binning/product segmentation, there's a good chance that if you ignore the reported flash size and still try to flash the full 128K, it works on those models..