Added PRNT_Host_SendByte() and PRNT_Host_Flush() functions to the Host mode Printer...
[pub/USBasp.git] / LUFA / Drivers / USB / Class / Device / HID.h
index ac6ee4c..638dac1 100644 (file)
@@ -42,7 +42,7 @@
  *
  *  \section Sec_Dependencies Module Source Dependencies
  *  The following files must be built with any user project that uses this module:
- *    - LUFA/Drivers/USB/Class/Device/HID.c
+ *    - LUFA/Drivers/USB/Class/Device/HID.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>
  *
  *  \section Module Description
  *  Device Mode USB Class driver framework interface, for the HID USB Class driver.
                        {
                                const struct
                                {
-                                       uint8_t  InterfaceNumber; /**< Interface number of the HID interface within the device */
+                                       uint8_t  InterfaceNumber; /**< Interface number of the HID interface within the device. */
 
-                                       uint8_t  ReportINEndpointNumber; /**< Endpoint number of the HID interface's IN report endpoint */
-                                       uint16_t ReportINEndpointSize; /**< Size in bytes of the HID interface's IN report endpoint */                                  
-                                       bool     ReportINEndpointDoubleBank; /** Indicates if the HID interface's IN report endpoint should use double banking */
+                                       uint8_t  ReportINEndpointNumber; /**< Endpoint number of the HID interface's IN report endpoint. */
+                                       uint16_t ReportINEndpointSize; /**< Size in bytes of the HID interface's IN report endpoint. */                                 
+                                       bool     ReportINEndpointDoubleBank; /**< Indicates if the HID interface's IN report endpoint should use double banking. */
                                        
                                        void*    PrevReportINBuffer; /**< Pointer to a buffer where the previously created HID input report can be
                                                                      *  stored by the driver, for comparison purposes to detect report changes that
                                           */                                                                            
                                struct
                                {
-                                       bool     UsingReportProtocol; /**< Indicates if the HID interface is set to Boot or Report protocol mode */
-                                       uint16_t IdleCount; /**< Report idle period, in milliseconds, set by the host */
+                                       bool     UsingReportProtocol; /**< Indicates if the HID interface is set to Boot or Report protocol mode. */
+                                       uint16_t IdleCount; /**< Report idle period, in milliseconds, set by the host. */
                                        uint16_t IdleMSRemaining; /**< Total number of milliseconds remaining before the idle period elapsed - this 
-                                                                                          *   should be decremented by the user application if non-zero each millisecond */    
+                                                                                          *   should be decremented by the user application if non-zero each millisecond. */   
                                } State; /**< State data for the USB class interface within the device. All elements in this section
                                          *   are reset to their defaults when the interface is enumerated.
                                          */
                         *  \ref EVENT_USB_Device_ConfigurationChanged() event so that the endpoints are configured when the configuration
                         *  containing the given HID interface is selected.
                         *
-                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state
+                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state.
                         *
-                        *  \return Boolean true if the endpoints were successfully configured, false otherwise
+                        *  \return Boolean true if the endpoints were successfully configured, false otherwise.
                         */
-                       bool HID_Device_ConfigureEndpoints(USB_ClassInfo_HID_Device_t* HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+                       bool HID_Device_ConfigureEndpoints(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
                        
                        /** Processes incoming control requests from the host, that are directed to the given HID class interface. This should be
                         *  linked to the library \ref EVENT_USB_Device_UnhandledControlRequest() event.
                         *
-                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state
+                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state.
                         */             
-                       void HID_Device_ProcessControlRequest(USB_ClassInfo_HID_Device_t* HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+                       void HID_Device_ProcessControlRequest(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
 
                        /** General management task for a given HID class interface, required for the correct operation of the interface. This should
                         *  be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().
                         *
-                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state
+                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state.
                         */
-                       void HID_Device_USBTask(USB_ClassInfo_HID_Device_t* HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
+                       void HID_Device_USBTask(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
                        
                        /** HID class driver callback for the user creation of a HID IN report. This callback may fire in response to either
                         *  HID class control requests from the host, or by the normal HID endpoint polling procedure. Inside this callback the
                         *  user is responsible for the creation of the next HID input report to be sent to the host.
                         *
-                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state
-                        *  \param[in,out] ReportID  If preset to a non-zero value, this is the report ID being requested by the host. If zero, this should
-                        *                 be set to the report ID of the generated HID input report (if any). If multiple reports are not sent via the
-                        *                 given HID interface, this parameter should be ignored.
-                        *  \param[in] ReportType  Type of HID report to generate, either \ref REPORT_ITEM_TYPE_In or \ref REPORT_ITEM_TYPE_Feature
-                        *  \param[out] ReportData  Pointer to a buffer where the generated HID report should be stored
-                        *  \param[out] ReportSize  Number of bytes in the generated input report, or zero if no report is to be sent
+                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state.
+                        *  \param[in,out] ReportID          If preset to a non-zero value, this is the report ID being requested by the host. If zero, 
+                        *                                   this should be set to the report ID of the generated HID input report (if any). If multiple
+                        *                                   reports are not sent via the given HID interface, this parameter should be ignored.
+                        *  \param[in]     ReportType        Type of HID report to generate, either \ref REPORT_ITEM_TYPE_In or \ref REPORT_ITEM_TYPE_Feature.
+                        *  \param[out]    ReportData        Pointer to a buffer where the generated HID report should be stored.
+                        *  \param[out]    ReportSize        Number of bytes in the generated input report, or zero if no report is to be sent.
                         *
                         *  \return Boolean true to force the sending of the report even if it is identical to the previous report and still within
-                        *          the idle period (useful for devices which report relative movement), false otherwise
+                        *          the idle period (useful for devices which report relative movement), false otherwise.
                         */
-                       bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, uint8_t* const ReportID,
-                                                     const uint8_t ReportType, void* ReportData, uint16_t* ReportSize) ATTR_NON_NULL_PTR_ARG(1)
+                       bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
+                                                                uint8_t* const ReportID,
+                                                                const uint8_t ReportType,
+                                                                void* ReportData,
+                                                                uint16_t* const ReportSize) ATTR_NON_NULL_PTR_ARG(1)
                                                                 ATTR_NON_NULL_PTR_ARG(2) ATTR_NON_NULL_PTR_ARG(4) ATTR_NON_NULL_PTR_ARG(5);
                        
                        /** HID class driver callback for the user processing of a received HID OUT report. This callback may fire in response to
                         *  either HID class control requests from the host, or by the normal HID endpoint polling procedure. Inside this callback
                         *  the user is responsible for the processing of the received HID output report from the host.
                         *
-                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state
-                        *  \param[in] ReportID  Report ID of the received output report. If multiple reports are not received via the given HID
-                        *                   interface, this parameter should be ignored.
-                        *  \param[in] ReportData  Pointer to a buffer where the received HID report is stored.
-                        *  \param[in] ReportSize  Size in bytes of the received report from the host.
+                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state.
+                        *  \param[in]     ReportID          Report ID of the received output report. If multiple reports are not received via the given HID
+                        *                                   interface, this parameter should be ignored.
+                        *  \param[in]     ReportType        Type of received HID report, either \ref REPORT_ITEM_TYPE_Out or \ref REPORT_ITEM_TYPE_Feature.
+                        *  \param[in]     ReportData        Pointer to a buffer where the received HID report is stored.
+                        *  \param[in]     ReportSize        Size in bytes of the received report from the host.
                         */
-                       void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, const uint8_t ReportID,
-                                                                 const void* ReportData, const uint16_t ReportSize) ATTR_NON_NULL_PTR_ARG(1)
-                                                                 ATTR_NON_NULL_PTR_ARG(3);
+                       void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
+                                                                 const uint8_t ReportID,
+                                                                 const uint8_t ReportType,
+                                                                 const void* ReportData,
+                                                                 const uint16_t ReportSize) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(4);
 
                /* Inline Functions: */
                        /** Indicates that a millisecond of idle time has elapsed on the given HID interface, and the interface's idle count should be
                         *  decremented. This should be called once per millisecond so that hardware key-repeats function correctly. It is recommended
                         *  that this be called by the \ref EVENT_USB_Device_StartOfFrame() event, once SOF events have been enabled via
-                        *  \ref USB_Device_EnableSOFEvents();.
+                        *  \ref USB_Device_EnableSOFEvents().
                         *
-                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state
+                        *  \param[in,out] HIDInterfaceInfo  Pointer to a structure containing a HID Class configuration and state.
                         */
-                       static inline void HID_Device_MillisecondElapsed(USB_ClassInfo_HID_Device_t* HIDInterfaceInfo);
-                       static inline void HID_Device_MillisecondElapsed(USB_ClassInfo_HID_Device_t* HIDInterfaceInfo)
+                       static inline void HID_Device_MillisecondElapsed(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo) ATTR_ALWAYS_INLINE ATTR_NON_NULL_PTR_ARG(1);
+                       static inline void HID_Device_MillisecondElapsed(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo)
                        {
                                if (HIDInterfaceInfo->State.IdleMSRemaining)
                                  HIDInterfaceInfo->State.IdleMSRemaining--;