With the memcpy statements, disabling interrupts, copying the arrays, and
re-enabling interrupts is less than 1 ms.

Awesome.  I have a lot to learn, and I really appreciate the help.

Bruce Partridge
http://www.rebreather.ca

> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of William Chops Westfield
> Sent: Sunday, December 21, 2003 2:21 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [PIC:]Two low priority long tasks with several high
> priority short tasks.
>
>
> On Sunday, Dec 21, 2003, at 13:23 US/Pacific, Bruce Partridge wrote:
>
> > This is the code I timed:
> >  for (i=0; i<16; i++)
> >     {
> >        temp_array1[i] = array1[i];
> >        temp_array2[i] = array2[i];
> >     }
> >
> > All of the arrays are 32 bit float.
> >    :
> > I am starting to think that I could write an inline assembler routine
> > that
> > would just move the contents without all the array addressing and
> > stuff.  On
> > an 18F4552, I should be able to expect the array contents to be
> > contiguous.
> >
>      memcpy(temp_array1, array1, 16*sizeof(float32));
>      memcpy(temp_array2, array2, 16*sizeof(float32));
>
> Probably will work.  But as everyone else has said, there is more
> going on here than meets the eye...
>
> BillW
>
> --
> http://www.piclist.com#nomail Going offline? Don't AutoReply us!
> email listserv@mitvma.mit.edu with SET PICList DIGEST in the body
> ---
> Incoming mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.543 / Virus Database: 337 - Release Date: 11/21/2003
>
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.543 / Virus Database: 337 - Release Date: 11/21/2003

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body