Input reports are returned
to the host through the INTERRUPT IN endpoint. The first byte will
contain the Report number if the device uses numbered reports.
@ingroup API
@param device A device handle returned from hid_open().
@param data A buffer to put the read data into.
@param length The number of bytes to read. For devices with
multiple reports, make sure to read an extra byte for
the report number.
@returns
This function returns the actual number of bytes read and
-1 on error.
@brief Read an Input report from a HID device.
Input reports are returned to the host through the INTERRUPT IN endpoint. The first byte will contain the Report number if the device uses numbered reports.
@ingroup API @param device A device handle returned from hid_open(). @param data A buffer to put the read data into. @param length The number of bytes to read. For devices with multiple reports, make sure to read an extra byte for the report number.
@returns This function returns the actual number of bytes read and -1 on error.