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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
That's great, thanks! Yeah, I thought usually ORIGIN+LENGTH should have contained all of RAM - didn't realise that they added heap on top. It's surprising the build didn't fail for me too.
So the default would be 20 byte packets? Thanks for finding the limit - that must have taken a while :) Sounds like there's not really a reason not to increase the MTU for the bootloader.
I never really 'got' the NRF debug stuff either, but I'm pretty sure it's expecting to use the UART.
Yeah, so in the old bootloader it was configurable, so setting to 8 was relatively sane.
What I do in secure DFU is I ask for a CRC after every 8 packets in order to basically fake what the old bootloader did. I'm completely ignoring the result of the CRC - it's literally just used to allow me to push 8 writes via Noble as fast as possible and then use the request/response to sync it all back up :)