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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
Hi. If you're using the STM32loader you need '-k' to get it reliable - there's info on the Download page: http://www.espruino.com/Download
If you're using the Web IDE, do you have Chrome, or Chromium? On Ubuntu, Chromium is a much older version and it seems the serial port access is a bit glitchy. There's supposed to be a warning about it in the flasher, but it looks like that may be broken with the new version - I'll see about fixing it.
edit: The warning is for versions <31. To be honest v31 might be a bit dodgy, but the v32 that I get with Ubuntu 12.04 seems good.