In64

Reads an 64-bit value from a register-based device.


				virtual HRESULT In64(VisaAddressSpace eSpace, UINT64 ullOffset, UINT64* puVal) abstract;

Parameters

eSpace: [in] Address space from which to read the value.
ullOffset: [in] Offset within eSpace to read the value.
puVal: Value read from the register-based device.

Return Value

Returns S_OK if successful, otherwise a failure HRESULT.

Remarks

Reads an 64-bit value from a register-based device at the specified memory space and offset.

Example

The following example demonstrates use of the In64 function.

C++

Copy

// CoAcme4321.cpp
STDMETHODIMP Acme4321::IAcme4321_ReadRegister()
{
  HRESULT hr = S_OK;

  UINT64 uVal;
  hr = io.Memory.In64(VisaA64Space, 0x10, &uVal);

  return hr;
}

Other Resources

In8

In16

In32

VisaAddressSpace Enumeration