Experimental Physics and
Industrial Control System

"Jim Chen" <[email protected]> · Fri, 7 Feb 2014 16:46:12 -0000

That's just a simple array

int data[2];

and it is the same size defined in the ISR.

Jim

> -----Original Message-----
> From: Eric Norum [mailto:[email protected]]
> Sent: 07 February 2014 16:43
> To: Jim Chen
> Cc: Mark Rivers; epics
> Subject: Re: asyn driver problem running Linux 3.8.13 with arm processor
> 
> What's the declaration of 'data' in your example?
> 
> On Feb 7, 2014, at 8:38 AM, Jim Chen <[email protected]>
> wrote:
> 
> > Mark and Eric,
> >
> > I might have pointed to the wrong place. I have deleted everything for
> > the message queue task as simple as below and it runs fine the first
> > time but segfault immediately when it waits again:
> >
> > while(1) {
> >        /* Wait for event from interrupt routine */
> > printf("====before\n");
> >       epicsMessageQueueReceive(intMsgQId, data, sizeof(data));
> > printf("====queue responsed\n"); }
> >
> > The debug printout:
> >
> > ====before
> > ....
> > ==== queue responsed
> > ====before
> > Segmentation fault
> >
> > This looks like something wrong with the message queue? Anyway I will
> > do more tests...
> >
> > Jim
> >
> >
> 
> --
> Eric Norum
> [email protected]
> 
> 
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System