petronel wrote:Probably I was expecting Download from and Upload to .. it makes more sense to me.
I have 2 other questions now:
1. After a sketch is uploaded and the STM32 is resetting, the Serial connection drop for a second, and I have to close/open the Serial Monitor. Is that normal ?
2. Uploading a sketch that compile ok but crash when running (like my test with RFID) make the DFU / com disappear and getting again "Unknown device". I can still reset the STM32 and upload an working sketch.
1. Yes this is normal. The Bootloader only does uploading it doesnt handle the Serial USB (thats handled inside the sketch binary)
2. If you crash the sketch it will crash the USB serial, (see item 1)