xprintf("VBUS: %X\n", USBSTA&(1<<VBUS));
xprintf("battery_charging: %X\n", battery_charging());
xprintf("battery_status: %X\n", battery_status());
xprintf("VBUS: %X\n", USBSTA&(1<<VBUS));
xprintf("battery_charging: %X\n", battery_charging());
xprintf("battery_status: %X\n", battery_status());