[question] Is it possible to read a range from device memory using this libraryu

[MikeGHAtCOM]

I see that the Device class has access to Upload function, which should enable (once connected) uploading of memory from the device to the PC.

I'm unclear what the block number needs to be - I can grab the sector out of the string descriptor, but can't map that in my head to the block number.

Looking at the memory in stm32cubeprogrammer when USB connected I can see the memory, so the upload function in the firmware looks to be wired up ok.

[benedekkupper]

The protocol supports it, but this library doesn't implement it yet. IIUC you are interested in the STM32 specific protocol extension? They had an open source C++ client way back, before the whole STM32Cube era, I used that as a reference. Check how the download works for the STM32 extension part, I guess you'll need to send a command to set the address first, then manage the block number just like in the case of download. The other option is that you capture the USB packets with wireshark during stm32cubeprogrammer operation, and interpret the data.