macos.py 文件源码

def Write(self, packet):
    """See base class."""
    report_id = 0
    out_report_buffer = (ctypes.c_uint8 * self.internal_max_out_report_len)()
    out_report_buffer[:] = packet[:]

    result = iokit.IOHIDDeviceSetReport(self.device_handle,
                                        K_IO_HID_REPORT_TYPE_OUTPUT,
                                        report_id,
                                        out_report_buffer,
                                        self.internal_max_out_report_len)

    # Non-zero status indicates failure
    if result != K_IO_RETURN_SUCCESS:
      raise errors.OsHidError('Failed to write report to device')