     // otherwise simulate sleep using delay and enable
     // usb
     mcu_enable_usbserial();
+    sync_listen();
+
     delay(SLEEP_TIME_MS);
   }
 

  status_init();
  watch_init(now);
  batlog_init(0x33);

  oled.fillScreen(COLOR_BLACK);


    // when on battery power disable usb and uart and
    // sleep for 200 ms
    mcu_disable_usbserial();

    Xadow.goToSleep(SLEEP_MODE_PWR_DOWN, SLEEP_TIME_MS);
    // take into account the fact millis isn't ticking over
    // during sleep
