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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
To get a response back, take a look at what I do in the module itself: https://github.com/espruino/EspruinoDocs/blob/master/modules/ATSMS.js#L111
You can use
at.cmd- which sends a command and returns the response (orundefinedif there was no response after a timeout)