SIOW download software

SteveS · Joined: 27 Oct 2003 Posts: 126

I'm working with the bootloader (loader.c) that comes with CCS. It basically works and I can download via Hyperterm. However, when I try to use SIOW and the Download Software command it doesn't work. I select the hex file and after that a window comes up, progress bar shows one line has downloaded, and then I get a timeout error. If I log the session it does show one line transferred and the 'ACK' reply from the PIC; and that's it.

Search of the archive seems to indicate a few people have used it successfully; any ideas?

Thanks,

SteveS

Kasper · Posted: Wed May 12, 2004 7:37 am

if you did not include the bootloader.h file, then your hex file may overwrite parts of the bootloader, if it is not write protected.. at least that seemed to be to blame when I was toying with it first.

SteveS · Joined: 27 Oct 2003 Posts: 126

I can't seem to locate a "bootloader.h".

The "ex_load.c" doesn't seem to include anything else. Am I missing something?

- Steve

Kasper · Posted: Wed May 12, 2004 1:08 pm

I hope CCS does not give me too much trouble for posting the content here

SteveS · Joined: 27 Oct 2003 Posts: 126

Thanks - I'll give that a try. Still don't understand why I don't have that code already - I'm at V3.182.

- Steve

Haplo · Joined: 06 Sep 2003 Posts: 659 Location: Sydney, Australia

And I remember in Loader.C it mentions something about setting your buffers to the lowest possible values or some byte may be missed. This may be related to the problem you are seeing.

SteveS · Joined: 27 Oct 2003 Posts: 126

Actually it worked with Hyperterm (and w/o changing the buffers). SIOW doesn't appear to have a buffer setup option.

In any case, I haven't had a chnace to try any sugsetions yet. I realized last night that loader.c puts code at the top of flash. On the 18F parts don't we want to use the bottom of flash so we can take advantage of the boot block protect? So I'm altering loader.c to do that.

Stay tuned...

- SteveS