ems_usb_write_mode
err = ems_usb_write_mode(dev, SJA1000_MOD_NORMAL);
err = ems_usb_write_mode(dev, SJA1000_MOD_RM);
if (ems_usb_write_mode(dev, SJA1000_MOD_RM))
if (ems_usb_write_mode(dev, SJA1000_MOD_NORMAL))