Well, yes, of course. But there are SWD pins on the back :-) And also full 4 pins on usb cable so SWDIO,SWCLK can be taken from middle usb pins. (no, usb does not work)
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.
Cool - many thanks for working on the nRF52840 chip.
Are updates via DFU possible?