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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.
@Kartman
A new day and a fresh perspective! I've hooked up the logic analyser and what seems to be happening is that the BG96 isn't receiving enough bytes only sometimes when doing the QISEND. It's expecting 536 bytes and we send around that amount. When it fails, it doesn't give the SEND OK until the next command comes along, which in my case is around 1 second later. That command fails as it gets gobbled up as data. What I am not sure of is which end is at fault. I'll hook up the CTS line to the analyser to see if the module wants us to stop or if the espruino code is not always sending what it should.