code: def sendFeatureReport(self, report, report_num=0):
          
          length = len(report) + 1
          buf = bytearray(length)
          buf[0] = report_num
          buf[1:] = report
          self._ioctl(
              _HIDIOCSFEATURE(length),
              (ctypes.c_char * length).from_buffer(buf),
              True,
          )
docs: Send a feature report.