WPILib: ChipObject/tInterruptManager.h Source File

WPILib 2012
WPILibRoboticsLibraryforFRC
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00001 // Class for handling interrupts.
00002 // Copyright (c) National Instruments 2008.  All Rights Reserved.
00003 
00004 #ifndef __tInterruptManager_h__
00005 #define __tInterruptManager_h__
00006 
00007 #include "NiRio.h"
00008 #include "tSystem.h"
00009 #include <semLib.h>
00010 
00011 namespace nFPGA
00012 {
00013 
00014 typedef void (*tInterruptHandler)(uint32_t interruptAssertedMask, void *param);
00015 
00016 class tInterruptManager : public tSystem
00017 {
00018 public:
00019    tInterruptManager(uint32_t interruptMask, bool watcher, tRioStatusCode *status);
00020    ~tInterruptManager();
00021    void registerHandler(tInterruptHandler handler, void *param, tRioStatusCode *status);
00022    uint32_t watch(int32_t timeoutInMs, tRioStatusCode *status);
00023    void enable(tRioStatusCode *status);
00024    void disable(tRioStatusCode *status);
00025    bool isEnabled(tRioStatusCode *status);
00026 private:
00027    void handler();
00028    static int handlerWrapper(tInterruptManager *pInterrupt);
00029 
00030    void acknowledge(tRioStatusCode *status);
00031    void reserve(tRioStatusCode *status);
00032    void unreserve(tRioStatusCode *status);
00033    tInterruptHandler _handler;
00034    uint32_t _interruptMask;
00035    int32_t _taskId;
00036    NiFpga_IrqContext _rioContext;
00037    bool _watcher;
00038    bool _enabled;
00039    void *_userParam;
00040 
00041    // maintain the interrupts that are already dealt with.
00042    static uint32_t _globalInterruptMask;
00043    static SEM_ID _globalInterruptMaskSemaphore;
00044 };
00045 
00046 }
00047 
00048 
00049 #endif // __tInterruptManager_h__
00050