ProSoft Technology MVI69E-LDM - Manual (Page 72)

Contents MVI69E-LDM ♦ "C" Programmable
Developer's Manual Linux Application Development Module
Page 72 of 130 ProSoft Technology, Inc.
August 21, 2014
MVI69_SetIOConfig
Syntax
int MVI69_SetIOConfig(MVI69HANDLE apihandle,
MVI69_IOCONFIG *ioconfig);
Parameters
handle handle returned by previous call to MVI69_Open
ioconfig Pointer to MVI69IOCONFIG structure to receive configuration
information.
Description
This function may be used to set the size of the module's IO images available for direct IO
access. handle must be a valid handle returned from MVI69_Open.
The actual number of input and output words that are transferred between the controller and
the MVI69E module is determined by the configuration of the generic profile. The only
purpose of this routine is to set maximum sizes allowed by the MVI69_ReadOutputImage
and MVI69_WriteInputImage functions.
The message buffer sizes are fixed. Therefore, the MsgRcvBufSize and MsgSndBufSize
members are ignored by this function.
Return Value
MVI69_SUCCESS no errors were encountered
MVI69_ERR_NOACCESS handle does not have access
MVI69_ERR_BADCONFIG Configuration is not valid
Example
MVI69HANDLE handle;
MVI69IOCONFIG ioconfig;
ioconfig.DirectInputSize = 20; //20words used for input
ioconfig.DirectOutputSize = 10; //10 words used for output
if (MVI69_SUCCESS !=MVI69_SetIOConfig (handle, &ioconfig))
printf ("Error: IO COnfiguration failed\n");
See Also
MVI69_GetIOConfig