PCD8544 - attempts to fix module running into strange js behavior

Actually I could be wrong, but at least for me, this works now:

  LCD.flip = function () {
    ce.reset();
    digitalWrite(dc,0); // cmd
    spi.send([0x40,0x80]); // Y addr
    digitalWrite(dc,1); // data
    spi.send(this.buffer);
    ce.set();
  };