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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.
@miCatotonic
@Gordon
Thanks for responding.
I do not know of a way to implement a cts function with RS485, which is a two wire bi-polar uni-directional interface. I can only guess about interrupts, buffer sizes, buffer overwrites,being a problem. But being that with ESP-32 is new to Espruino and not many others are experiencing a similar problem, I will have to wait or find and pay someone knowledgeable about the ESP-32 and Espruino to fix this.