30 9112FreeDMAMem, 32 9112GetSample | HP specs

uArgument :

buf_size: Bytes to allocate. Please be careful, the unit of this argument is BYTE, not SAMPLE.

memID: If the memory allocation is successful, driver returns the ID of that memory in this argument. Use this memory ID in W_9112_AD_DMA_Start or W_9112_ContDmaStart function call. linearAddr: The linear address of the allocated DMA memory. You can use this linear address as a pointer in C/C++ to access the DMA data.

uReturn Code :

ERR_NoError

ERR_AllocDMAMemFailed

5.30 _9112_Free_DMA_Mem

uDescription

Deallocate a system DMA memory under Windows 95 environment. This function is only available in Windows 95 version.

uSyntax

Visual C++(Windows-95)

int W_9112_Free_DMA_Mem (HANDLE memID)

Visual Basic (Windows-95)

W_9112_Free_DMA_Mem (ByVal memID As Long) As Long

uArgument :

memID: The memory ID of the system DMA memory to deallocate.

uReturn Code :

ERR_NoError

5.32 _9112_Get_Sample

uDescription

For the language without pointer support such as Visual Basic, programmer can use this function to access the index-th data in DMA buffer. This function is only available in Windows 95 version.

uSyntax

Visual C++(Windows-95)

int W_9112_Get_Sample (unsigned long linearAddr, unsigned index, unsigned short *ai_data)

Visual Basic (Windows-95)

W_9112_Get_Sample (ByVal linearAddr As Long, ByVal idx As Long, ai_data As Integer) As Long

C/C++ Library ∙ 65

Image 73

HP manual 30 9112FreeDMAMem, 32 9112GetSample

Contents

Page Trademarks ALL Rights Reserved Detailed Company Information Adlink Technology IncQuestions Page Contents Conversion Digital Input and Output Conversion9112DO 9112DA 9112ADSetChannel 9112ADSetRange 9112DblBufferTransfer 9112GetOverrunStatus What do you need VR Assignment Adjustment Appendix A. Demo. Programs Product Warranty/ServiceSoftware Utilities PCI Scan Utility How to Use This Guide T r o d u c t i o n FeaturesIntroduction ∙ Applications SpecificationsAnalog Input A/D Analog Output D/A Digital I/O DIO General SpecificationsProgrammable Counter Programming Library Software SupportingPCIS-LVIEW LabVIEW Driver DAQBenchTM ActiveX Controls PCIS-VEE HP-VEE DriverDASYLabTM PRO PCIS-DDE DDE Server and InTouchTM ∙ Installation InstallationWhat You Have Installation ∙ Device Installation for Windows SystemsUnpacking PCI-9112 Layout PCB LayoutConverter PCI -Bus Controller PCB Layout of the PCI-9112 CPCI-9112 Layout Analog Input Channel Configuration Jumper Settings10 ∙ Installation D/A Reference Voltage Setting Clock Source Setting 12 ∙ Installation Internal Reference Voltage Setting CN 3 Analog Input / Output & Counter/Timer Connectors Pin AssignmentsPin Assignments of PCI-9112 CN 2 Digital Signal Output do 0 CN 1 Digital Signal Input DI 014 ∙ Installation Pin Assignments of cPCI-9112 16 ∙ Installation Hardware Installation Outline Connect with ACLD-8125 Daughter Board ConnectionConnect with ACLD-9137 Connect with ACLD-9182 Connect with ACLD-9185 18 ∙ InstallationConnect with ACLD-9138 and ACLD-9188 I/O Registers Map G i s t e r s F o r m a tRegisters Format ∙ 20 ∙ Registers Format A/D Data Registers D/A Output Register Mode A/D control Register22 ∙ Registers Format MUX Register Bit8 ~ Bit5 Auto-Scan Bit 24 ∙ Registers Format Software Trigger Register A/D Status Register 26 ∙ Registers Format Digital I/O register High Level Programming Internal Timer/Counter RegisterLow Level Programming E r a t i o n T h e o r e m Analog Input Signal ConnectionA/D Conversion 28 ∙ Operation Theorem Differential input mode Single-ended ModeOperation Theorem ∙ 30 ∙ Operation Theorem 4 Floating source and differential input Timer Pacer Trigger 1 A/D Conversion Procedure2 A/D Trigger Modes Software trigger External Trigger 3 A/D Data Transfer ModesSoftware Data Transfer Drdy Interrupt Transfer Intx DMA Transfer Dmax D/A Conversion 34 ∙ Operation Theorem Digital Input and Output Counter Timer/Counter Operation Pacer Trigger Source General Purpose Timer/ CounterAddress 36 ∙ Operation Theorem Control Byte 38 ∙ Operation Theorem Mode Definitions + + L i b r a r y Libraries Installation++ Library ∙ Naming Convention Programming GuideData Types 40 ∙ C/C++ Library Syntax 9112InitialArgument Return Code 9112DI Channel 9112DIDescription 42 ∙ C/C++ Library 9112DO 44 ∙ C/C++ Library 9112DA 9112ADSetChannel 46 ∙ C/C++ Library 9112ADSetRange Cardnumber the card number of PCI-9112 10 9112ADSetMode 48 ∙ C/C++ Library 11 9112ADSetAutoscan 12 9112ADSoftTrig 50 ∙ C/C++ Library 13 9112ADAquire 14 9112ADDMAStart 52 ∙ C/C++ Library 15 9112ADDMAStatus 54 ∙ C/C++ Library 16 9112ADDMAStop 17 9112ContDmaStart 56 ∙ C/C++ Library 18 9112CheckHalfReady 20 9112GetOverrunStatus 19 9112DblBufferTransfer 58 ∙ C/C++ Library 21 9112ContDmaStop 22 9112ADINTStart 60 ∙ C/C++ Library 23 9112ADINTStatus 24 9112ADINTStop 25 9112ADTimer 62 ∙ C/C++ Library 2MHz / c1 * c2 27 9112TIMERRead 26 9112TIMERStart 29 9112AllocDMAMem 28 9112TIMERStopArgument cardnumber countervalue 64 ∙ C/C++ Library 32 9112GetSample 30 9112FreeDMAMem 66 ∙ C/C++ Library What do you need CalibrationCalibration ∙ VR Assignment A/D AdjustmentBipolar Calibration Unipolar Calibration Reference Voltage Calibration D/A Adjustment2 D/A Channel Calibration Software Utility Software Utilities70 ∙ Software Utility Running the Utility System ConfigurationCalibration Software Utility ∙ PCI Scan Utility Functional Testing72 ∙ Software Utility DOS Software P e n d i x a . D e m o O g r a m sWindows 95 DLL Appendix a Demo Programs ∙ 74 ∙ Appendix a Demo Programs Product Warranty/Service ∙ Product Warranty/Service