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CR/LF (Carriage retrun/ Line Feed) as a combination

 
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bloues



Joined: 25 Nov 2003
Posts: 3

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CR/LF (Carriage retrun/ Line Feed) as a combination
PostPosted: Sat Apr 17, 2004 10:20 am     Reply with quote
Hi

Can somebody tell me how to look for a string combination [CR][LF]. I just can't let the PIC18F6720 detect the GPS stream end with only a [CR] or [LF].
The trimble GPS datasheet state the following:
"[CR][LF]: The carriage return [CR] and line feed [LF] combination terminate the message."

How can this be detected??

Thanks
Willie
Charlie U



Joined: 09 Sep 2003
Posts: 183
Location: Somewhere under water in the Great Lakes

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PostPosted: Sat Apr 17, 2004 10:36 am     Reply with quote
The carriage return is 0x0D and the line feed is 0x0A. As your data is received, check each byte for a 0x0D and then if the next byte is 0x0A, the received data string has been terminated.

Is this what you were looking for? If so, I hope this helps.

Also check www.asciitable.com for the ASCII character codes.
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