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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.
@fanoush
Yes, I never used SWD debugging before. Just recently I discovered that blackmagic probe firmware is available for bluepill - $1.67 STM32 board I had in drawer, so this was first time I used it. It is cool to stop existing firmware in any point and see HW registers. I did it both in DFU bootloader (serial enabled, i2c not) and app (serial not enabled but i2c yes) and with display on and off, charging/not charging - one can find a lot of basic stuff with that :-) I saw in datasheet section about the MWU — Memory watch unit. I wonder if it could be used to trace writes to peripherials at runtime with stock firmware still running?
Also I wonder how long the battery will last with espruino flashed and bt enabled (and console on serial). It did last over night but I don't see how much battery is left.