fprintf in PIC32

[Harold Hallikainen-2]

I can't find any information on output redirection on the PIC32. On the
PIC24, I declared a FILE pointer, then did an FOPEN of it, and revised the
character output routines to watch which handle was passed. Is there some
documentation on this for the PIC32? The Microchip PIC32 Forum is
returning a Microsoft 404 file not found page...

Thanks!

Harold



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[Vicent Colomar Prats]

Forum is working nice:
http://www.microchip.com/forums/tt.aspx?forumid=202


2009/10/27 Harold Hallikainen <harold@...>

> I can't find any information on output redirection on the PIC32. On the
> PIC24, I declared a FILE pointer, then did an FOPEN of it, and revised the
> character output routines to watch which handle was passed. Is there some
> documentation on this for the PIC32? The Microchip PIC32 Forum is
> returning a Microsoft 404 file not found page...
>
> Thanks!
>
> Harold
>
>
>
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[Harold Hallikainen-2]

> Forum is working nice:
> http://www.microchip.com/forums/tt.aspx?forumid=202

Thanks! It's a lot better than yesterday, but still occasionally comes up
with a "We're sorry page."

Harold

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[Harold Hallikainen-2]

>
>> Forum is working nice:
>> http://www.microchip.com/forums/tt.aspx?forumid=202
>
> Thanks! It's a lot better than yesterday, but still occasionally comes up
> with a "We're sorry page."
>
> Harold
>

I'm continuing to have problems with http://www.microchip.com . A fair
amount of the time, the PIC32 forum will not show up. Now, for the main
page, I get "Internal Server Error - Read
The server encountered an internal error or misconfiguration and was
unable to complete your request.

Reference #3.cf380e08.1256773288.0 "

Harold


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[Gerhard Fiedler]

Harold Hallikainen wrote:

>>> Forum is working nice:
>>> http://www.microchip.com/forums/tt.aspx?forumid=202
>>
>> Thanks! It's a lot better than yesterday, but still occasionally comes up
>> with a "We're sorry page."
>
> I'm continuing to have problems with http://www.microchip.com . A fair
> amount of the time, the PIC32 forum will not show up. Now, for the main
> page, I get "Internal Server Error - Read
> The server encountered an internal error or misconfiguration and was
> unable to complete your request.
>
> Reference #3.cf380e08.1256773288.0 "

That link above works for me. Maybe you have a cookie in your browser
that the forum software can't digest?

Gerhard
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[Harold Hallikainen-2]

> Harold Hallikainen wrote:
>
>>>> Forum is working nice:
>>>> http://www.microchip.com/forums/tt.aspx?forumid=202
>>>
>>> Thanks! It's a lot better than yesterday, but still occasionally comes
>>> up
>>> with a "We're sorry page."
>>
>> I'm continuing to have problems with http://www.microchip.com . A fair
>> amount of the time, the PIC32 forum will not show up. Now, for the main
>> page, I get "Internal Server Error - Read
>> The server encountered an internal error or misconfiguration and was
>> unable to complete your request.
>>
>> Reference #3.cf380e08.1256773288.0 "
>
> That link above works for me. Maybe you have a cookie in your browser
> that the forum software can't digest?
>
> Gerhard

Thanks! Just tried it from my home laptop, which dumps all cookies when
the browser shuts down. I get this error page:
http://www.microchip.com/error.html?aspxerrorpath=/forums/tt.aspx .

Back to the original question, though... Does anyone know about fprintf
stream definition for C32?

THANKS!

Harold



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[WH Tan]

2009/10/29 Harold Hallikainen <harold@...>:

> Back to the original question, though... Does anyone know about fprintf
> stream definition for C32?

Try this FAQ:
http://www.microchip.com/forums/tm.aspx?m=406660

Well I am having problem too with Microchip website.  Sometime the
link worked, sometime it didn't.  However I found that if you know the
link to a message, you can still access it, at least for my case.  See
if the link works for you.

Best regards,

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[Harold Hallikainen-2]

> 2009/10/29 Harold Hallikainen <harold@...>:
>
>> Back to the original question, though... Does anyone know about fprintf
>> stream definition for C32?
>
> Try this FAQ:
> http://www.microchip.com/forums/tm.aspx?m=406660
>
> Well I am having problem too with Microchip website.  Sometime the
> link worked, sometime it didn't.  However I found that if you know the
> link to a message, you can still access it, at least for my case.  See
> if the link works for you.
>
> Best regards,
>
> --
> WH Tan

Thanks! I see redirecting printf in the FAQ, but not fprintf. Use of
fprintf with fopen is nice since I can define all my output devices ahead
of time then just send to the appropriate device instead of having to
redirect stdout all the time. Though the library documentation includes
fopen and fprintf, I see nothing on creating additional output streams
(like I did for the 24H).

The Microchip website seems to be having problems this week. Sometimes it
times out. Sometimes it returns a maintenance page. Sometimes, especially
in forums, it returns a 404 error page. I was able to see if anyone had
answered my post (they had not) by doing an author search. The link in to
PIC32 general topics had returned the 404 page. I assume they'll get that
worked out soon...

Thanks!

Harold



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[Gerhard Fiedler]

Harold Hallikainen wrote:

>> 2009/10/29 Harold Hallikainen <harold@...>:
>>
>>> Back to the original question, though... Does anyone know about
>>> fprintf stream definition for C32?
>>
>> Try this FAQ:
>> http://www.microchip.com/forums/tm.aspx?m=406660
>>
> Thanks! I see redirecting printf in the FAQ, but not fprintf. Use of
> fprintf with fopen is nice since I can define all my output devices
> ahead of time then just send to the appropriate device instead of
> having to redirect stdout all the time. Though the library
> documentation includes fopen and fprintf, I see nothing on creating
> additional output streams (like I did for the 24H).

I'm not sure what exactly you want to do, or what your question is, but
you can override every C library function with your own version. Just
link it in, and the linker won't use the code from the library. (That's
one of the advantages of a library-based implementation, as opposed to a
compiler-based implementation, if you remember this discussion a while
ago :)

However, you need to provide every function that's needed and that's in
one library source file. (Link modules are normally file-based.) That
is, if you want to substitute C library functions, you need to
substitute all functions that are in one C library source file. Which
typically are not many.

This works if the C compiler is ANSI C.

Gerhard
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[Barry Gershenfeld-2]

I got the same behavior on the forum site that you were getting.  I did find
that some parts worked, and some parts didn't, and sometimes I could hit a
higher level page and then drill back down to the PIC32 section.  I created
a few extra bookmarks to help do that quickly, but sometimes that page just
wasn't there.  In that case I would just come back in half an hour and hope
to hit a random "up" period.  Microchip's site software is among the
strangest and poorest performers, so I'm used to it acting up.  Certainly
not the sort of thing Embedded folks would write :)

It seems to have settled down now, and there is an answer (with code) posted
to your question.  If you still can't get it, I suppose we could paste a
copy up here.

http://www.microchip.com/forums/tm.aspx?m=455000#

Barry
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[Harold Hallikainen-2]

> I got the same behavior on the forum site that you were getting.  I did
> find
> that some parts worked, and some parts didn't, and sometimes I could hit a
> higher level page and then drill back down to the PIC32 section.  I
> created
> a few extra bookmarks to help do that quickly, but sometimes that page
> just
> wasn't there.  In that case I would just come back in half an hour and
> hope
> to hit a random "up" period.  Microchip's site software is among the
> strangest and poorest performers, so I'm used to it acting up.  Certainly
> not the sort of thing Embedded folks would write :)
>
> It seems to have settled down now, and there is an answer (with code)
> posted
> to your question.  If you still can't get it, I suppose we could paste a
> copy up here.
>
> http://www.microchip.com/forums/tm.aspx?m=455000#
>
> Barry
> --

Thanks! I'm working through the code right now.

Harold


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