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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
Whitelit?
st-link is for the discovery boards that have a programmer on-board, not for the HY-STM32... The python script is very reliable usually - are you sure you've got it plugged in the right USB connector and have reset into bootloader mode properly?
I really don't know what to suggest. This is why we have the Espruino board. All the boards are the same, they're tested, and I can develop software that works reliably with them.