It sounds a bit like you're just not getting any characters back from the module at all?
Could it be a baud rate or wiring issue? Or perhaps the board needs some pin pulled up/down in order to turn on?
@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.
It sounds a bit like you're just not getting any characters back from the module at all?
Could it be a baud rate or wiring issue? Or perhaps the board needs some pin pulled up/down in order to turn on?