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Add documentation

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mbanth
2021-12-01 12:25:18 +00:00
parent 21c1e661ae
commit 53f80dfba4
1 changed files with 66 additions and 2 deletions
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68
lib_xua/src/hid/xua_hid_report_descriptor.h
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@@ -88,9 +88,29 @@ typedef struct
} USB_HID_Report_Element_t; } USB_HID_Report_Element_t;
/** /**
* \brief Register that previously changed HID Report data has been sent * \brief Register that a previously changed HID Report data has been sent
* to the USB Host. * to the USB Host.
* *
* HID processing maintains a list of HID Reports with changed data not yet
* reported to the USB Host.
*
* Applications that have only one HID Report may or may not use a Report ID.
* Applications that have more than one HID Report must use Report IDs.
*
* For applications that do not use Report IDs, the list contains one element.
* That element tracks whether or not an unreported change has occurred in the
* HID data.
* For applications that use Report IDs, the list contains one element per
* Report ID.
* Each element tracks unreported changes for the corresponding Report ID.
*
* Calling this function for a given Report ID indicates that the changed
* HID data has been reported to the USB Host.
*
* \warning This function will fail silently if given a Report ID outside of
* the supported range.
* The supported range runs from zero inclusive to HID_REPORT_COUNT exclusive.
*
* \param[in] id A HID Report ID. * \param[in] id A HID Report ID.
* Zero clears the pending status of all Report IDs. * Zero clears the pending status of all Report IDs.
* Use zero if the application does not use Report IDs. * Use zero if the application does not use Report IDs.
@@ -193,6 +213,28 @@ size_t hidGetReportLength( const unsigned id );
/** /**
* \brief Indicate if a change to the HID Report data has been received. * \brief Indicate if a change to the HID Report data has been received.
* *
* HID processing maintains a list of HID Reports with changed data not yet
* reported to the USB Host.
*
* Applications that have only one HID Report may or may not use a Report ID.
* Applications that have more than one HID Report must use Report IDs.
*
* For applications that do not use Report IDs, the list contains one element.
* That element tracks whether or not an unreported change has occurred in the
* HID data.
* For applications that use Report IDs, the list contains one element per
* Report ID.
* Each element tracks unreported changes for the corresponding Report ID.
*
* Calling this function with a given Report ID returns an indication of
* whether unreported HID data exists for that Report ID.
*
* \warning This function will return zero if given a Report ID outside of
* the supported range.
* If not using Report IDs, the supported range consists of the value zero only.
* If using Report IDs, the supported range runs from zero inclusive to
* HID_REPORT_COUNT exclusive.
*
* \param[in] id A HID Report ID. * \param[in] id A HID Report ID.
* Zero reports the pending status of all Report IDs. * Zero reports the pending status of all Report IDs.
* Use zero if the application does not use Report IDs. * Use zero if the application does not use Report IDs.
@@ -226,8 +268,30 @@ void hidResetReportDescriptor( void );
/** /**
* \brief Register that a change to the HID Report data has been received. * \brief Register that a change to the HID Report data has been received.
* *
* HID processing maintains a list of HID Reports with changed data not yet
* reported to the USB Host.
*
* Applications that have only one HID Report may or may not use a Report ID.
* Applications that have more than one HID Report must use Report IDs.
*
* For applications that do not use Report IDs, the list contains one element.
* That element tracks whether or not an unreported change has occurred in the
* HID data.
* For applications that use Report IDs, the list contains one element per
* Report ID.
* Each element tracks unreported changes for the corresponding Report ID.
*
* Calling this function with a given Report ID indicates that the HID data
* for that Report ID has changed and has not yet been reported to the USB
* Host.
*
* \warning This function will fail silently if given a Report ID outside of
* the supported range.
* If not using Report IDs, the supported range consists of the value zero only.
* If using Report IDs, the supported range runs from one inclusive to
* HID_REPORT_COUNT exclusive.
*
* \param[in] id A HID Report ID. * \param[in] id A HID Report ID.
* Zero reports the pending status of all Report IDs.
* Use zero if the application does not use Report IDs. * Use zero if the application does not use Report IDs.
*/ */
void hidSetChangePending( const unsigned id ); void hidSetChangePending( const unsigned id );