def read(self):
        """
        Read command result from blink(1), low-level internal use
        Receive USB Feature Report 0x01 from blink(1) with 8-byte payload
        Note: buf must be 8 bytes or bad things happen
        """
        buf = self.dev.get_feature_report(REPORT_ID,9)
        log.debug("blink1read: " + ",".join('0x%02x' % v for v in buf))
        return buf