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Binary serial to ascii

 
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Binary serial to ascii
PostPosted: Mon May 02, 2005 11:24 am     Reply with quote
Hi,

I have an application where I need to read an incoming 19.2kbaud binary datastream on an rs232 port. This data will be added to an existing ascii serial stream being sent out the port.

The issue is to read the data looking for a header, grab a section, then convert to ascii and combine with an existing data output. Can someone give any hints or a basic approach to converting the data? Any existing functions in the language that will help with this? The pic is a 16f877 and is doesn't have endless amounts of memory available.

Thanks.
rwyoung



Joined: 12 Nov 2003
Posts: 563
Location: Lawrence, KS USA

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PostPosted: Mon May 02, 2005 12:45 pm     Reply with quote
This just screams "state machine" and "look-up table" to me.
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Rob Young
The Screw-Up Fairy may just visit you but he has crashed on my couch for the last month!
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Mon May 02, 2005 1:20 pm     Reply with quote
You didn't tell us what protocol you're trying to parse, but this thread
and the links within it, may be of help:
http://www.ccsinfo.com/forum/viewtopic.php?t=21697&highlight=nmea
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