Create hidden network with EspruinoWifi

Sorry named the wrong module, edit post #2

Try this snippet to find the AT version on the espressif board:

var WIFI_SERIAL = Serial2;
WIFI_SERIAL.setup(115200, { rx: A3, tx : A2});
at = require("AT").connect(WIFI_SERIAL);

//at.debug();

at.cmd("AT+GMR\r\n", 1000, function cb(d) {
      console.log(d);
});

The one on my desks response

AT version:0.40.0.0(Aug  8 2015 14:45:58)

Sorry hidden AP it is not supported in 0v40.