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putc(), getc()...

 
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bsodmike



Joined: 05 Aug 2006
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putc(), getc()...
PostPosted: Wed Aug 30, 2006 12:13 pm     Reply with quote
Quick question, in the event nothing is received does this function timeout? Or does it simply attempt to read the RCREG register, find that it hasn't been loaded and continue?

Was just wondering it no devices were attached, if these would cause the code to halt...but I don't see why putc() would be affected. (both are in ref to async rs232)

Cheers,
Mike
PCM programmer



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PostPosted: Wed Aug 30, 2006 12:18 pm     Reply with quote
Quote:
Quick question, in the event nothing is received does this function timeout?

getc() and fgetc() will wait forever, while looking for a character to
come in.
Use kbhit() to check if a character is available, before calling getc() or
fgetc(). Also look at the timed_getc() function in this example file:
c:\program files\picc\examples\ex_tgetc.c
Humberto



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PostPosted: Wed Aug 30, 2006 12:21 pm     Reply with quote
Quote:

Quick question, in the event nothing is received does this function timeout?


http://www.ccsinfo.com/faq.php?page=getc_timeout


Humberto
bsodmike



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PostPosted: Thu Aug 31, 2006 12:42 am     Reply with quote
That said putc() isn't affected yea?

Cheers!
Humberto



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PostPosted: Thu Aug 31, 2006 8:12 am     Reply with quote
Quote:

That said putc() isn't affected yea?


yea

Humberto
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