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mpiFilterMemoryGet

Declaration

 
long mpiFilterMemoryGet(MPIFilter     filter,
                        void          *dst,
                        const  void   *src,
                        long          count)
 

Required Header: stdmpi.h
Change History: Modified in the 03.03.00

Description

mpiFilterMemoryGet copies count bytes of a Filter's (filter) memory (starting at address src) and writes them into application memory (starting at address dst).

 
Return Values
MPIMessageOK  

Sample Code


/* filterControlOutputGet(...) demonstrates how to read 
the control output velocity on a motion object directly 
through memory. mpiFilterMemory(...) obtains the filter 
control memory pointer. The pointer's address is then 
passed into mpiFilterMemoryGet(...) to obtain the control 
output. 
Note: MEIXmpFilter *memory must be casted as (void *) in 
mpiFilterMemory(...).
*/

long filterControlOutputGet(MPIFilter  filter,
                            float      *controlOutput)
{

   MEIXmpFilter   *memory;
   long           returnValue;

   /* Get filter control memory pointer */
   returnValue =
      mpiFilterMemory(filter, 
      (void *)&memory);

   /* Get filter control output value */
   if(returnValue == MPIMessageOK)
   {
      returnValue = 
          mpiFilterMemoryGet(filter,
                             controlOutput,
                             &memory->ControlOutput,
                             sizeof(&memory->ControlOutput));
   }
   return returnValue;
}

See Also

mpiFilterMemorySet | mpiFilterMemory

 

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