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#int_rda problem

 
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maxD



Joined: 16 Dec 2013
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#int_rda problem
PostPosted: Fri Jan 03, 2014 2:49 am     Reply with quote
Hi guys!
In the ex_sisr.c example , #int_rda written using getc().
But, can we use get_string() instead of getc() inside #int_rda ISR?
asmallri



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PostPosted: Fri Jan 03, 2014 2:52 am     Reply with quote
Yes. You can do virtually anything you like but it will not do you any good - it will not produce a useful result.

You will receive an interrupt for each character received. Look at examples implementing a serial receive ring buffer.
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asmboy



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PostPosted: Fri Jan 03, 2014 2:53 pm     Reply with quote
Quote:

can we use get_string()


i suggest you use a big enough ISR buffer,
and scan it for a \13 , swap it for a \0

then copy the appropriate chars out when your
string terminator is found, making a buffered , virtual get_string();

you could save a lot of looking by comparing each ISR received char to your string term char- and set the flag when it is seen -
if the flag is an INT8
it can be =0 when no str_term has arrived - then
when TRUE make it be equal to the offset in the ISR buffer
WHERE it was seen ( more chars might arrive you know)
-and be very efficient as well
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