Re: Access to device support debugging vars via iocsh (3.14b2)

[Eric Norum <eric.norum@usask.ca>]

On Monday, August 19, 2002, at 08:52 AM, S. Joshua Stein wrote:

> I would like to set a (global) debugging variable which is part of my 
> device
> support running on a solaris IOC (3.14b2). In the vxWorks world, I 
> would just
> type:
>
> > deviceDebugVar=1
>
> This, however, won't work with iocsh. Does anyone know if/how I can 
> gain access
> to these variables?

Non-vxWorks IOCs  don't have access to the executable symbol table (at 
the moment) so this trick of assigning to variables doesn't work.  About 
the only thing I can suggest for now is to register a command to set the 
variable:

/* setDebug */
static const iocshArg setDebugArg0 = { "level",iocshArgInt};
static const iocshArg * const setDebugArgs[1] = {&setDebugArg0};
static const iocshFuncDef setDebugFuncDef = {"setDebug",1,setDebugArgs};
static void setDebugCallFunc(const iocshArgBuf *args)
{
    deviceDebugVar( args[0].ival);
}


Then, somewhere in your device initialization, register the command:
iocshRegister(&setDebugFuncDef,setDebugCallFunc);



Or, you can use a C++ static constructor to register the command for you 
when the application starts.  For example,
class SetDebugRegister {
  public:
    SetDebugRegister() 
{ iocshRegister(&setDebugFuncDef,setDebugCallFunc); }
};
static SetDebugRegister setDebugRegisterObj;


--
Eric Norum <eric.norum@usask.ca>
Department of Electrical Engineering
University of Saskatchewan
Saskatoon, Canada.
Phone: (306) 966-5394   FAX:   (306) 966-5407