This might be what you're after: https://www.espruino.com/Interfacing#bluetooth-le
It's a set of example code for communicating with Bluetooth LE over:
So hopefully one of those will work for you :)
@Gordon started
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.
This might be what you're after: https://www.espruino.com/Interfacing#bluetooth-le
It's a set of example code for communicating with Bluetooth LE over:
So hopefully one of those will work for you :)