Home		Prev Next
Contents Programming For PCI Device Overview Programmers Guide Scenario Access to PCI devices information How to work with PCI header Accessing PCI registers Accessing BAR0-BAR5 areas I/O Ports control Single read/write operations Data array read/write operations Accessing Physical Memory Addresses Memory Mapping Additional Functions Hardware interrupts handling at user level Common Issues Extended options of hardware interrupt handling PCI Support Routines And Structures Common Procedures OpenRapidPci IsRapidPciOpened CloseRapidPci GetHardwareConfiguration GetPciLocation PCI specific functions PCI Header GetPciHeader SetPciHeader ReadFromPci WriteToPci PCI BAR Areas GetNumOfPciBars GetPciBarLength GetPciBarPhysicalAddress GetPciBarLinearAddress ReadPciBarByte ReadPciBarWord ReadPciBarLong WritePciBarByte WritePciBarWord WritePciBarLong PCI Registers ReadPciCommandReg WritePciCommandReg ControlPciCommandRegBits ReadPciStatusReg Memory Access MapPhysToLinear UnmapMemory GetMem GetMemW GetMemL SetMem SetMemW SetMemL Direct Port I/O GetPortByte GetPortWord GetPortLong SetPortByte SetPortWord SetPortLong ReadPortBuffer WritePortBuffer Hardware Interrupts UnmaskPciIrq MaskPciIrq GetInterruptCounter		Common Issues Go to RapidDriver Main Page Function UnmaskPciIrq installs a hardware interrupt handler. It works as follows: ULONG IrqCounter = 0; PIRQ_SHARE_REC ShareRec; PIRQ_CLEAR_REC ClearRec; // Interrupt handler void __stdcall MyInterruptHandler(ULONG TimeStampLoPart, ULONG TimeStampHiPart) {     ++ IrqCounter;  } // Main program hPci = OpenRapidPci( 0 ); if (IsRapidPciOpened(hPci)) {     ...     set ClearRec and ShareRec structures, see below      ...     UnmaskPciIrq( hPci, &ShareRec, &ClearRec, MyInterruptHandler ); } else    ... // failed Calling the function MaskPciIrq stops hardware interrupt processing: MaskPciIrq ( hPci ); Counter value for the number of handled interrupts is returned by function GetInterruptCounter. .