Use the programme putty.
putty
Or use the web ide.
Why do you want to write directly to the com port?
@Wilberforce 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.
Use the programme
putty
.Or use the web ide.
Why do you want to write directly to the com port?