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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.
@Harry
Thanks @Gordon i got the issue was the amount of data sent to device. I have read android documentation that it allows 20bytes as MTU which was the issues in my case i have broken the code into chunks and send it to device and it worked (y)