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-   -   Newline broken? (http://www.chiefdelphi.com/forums/showthread.php?t=63013)

Maxpower57 31-01-2008 22:57

Newline broken?
 
Ok, so for some odd reason (personally, i blame the crappy mplab compiler)
the newline \n key has stopped working in the printf commands..

im confused at how this is even possible

printf("test \n");

any ideas?

Qbranch 31-01-2008 22:59

Re: Newline broken?
 
I know it's odd, and not right, but return is the character you're looking for

Code:

printf("adaptive cruise setpoint: %d\r",lvel.cruise);
-q

Maxpower57 31-01-2008 23:00

Re: Newline broken?
 
Quote:

Originally Posted by Qbranch (Post 689932)
I know it's odd, and not right, but return is the character you're looking for

Code:

printf("adaptive cruise setpoint: %d\r",lvel.cruise);
-q

o rly? wow. ok thanks.
i thought i remember the newline working before...
eh oh well... way to follow the C standard MPlab.. </sarcasm>

whitetiger0990 01-02-2008 02:23

Re: Newline broken?
 
It depends on what you're using to view it. On Windows, line endings are \r\n (A carriage return and a linefeed). Just a \r is incorrect, but I don't complain if it works. Linux is just a \n, nuff said. I think IFI Loader's viewing thing wants a \r\n (or at least an \r) and the Hyperterminal just wants an \n... or maybe it was the other way around. It has nothing to do with c18 or mplab, it has to do with the client you're using to view it. c18 doesn't care what it's sending. =)

http://en.wikipedia.org/wiki/End_of_line

jgannon 01-02-2008 10:59

Re: Newline broken?
 
Quote:

Originally Posted by whitetiger0990 (Post 690033)
Just a \r is incorrect

As it turns out, \r has traditionally been the standard for Macintosh. I don't know whether that has changed since Mac OS became more Unix-y. In any case, you're right that this problem has far less to do with C18 than it does with the program you're using to view your output.

whitetiger0990 01-02-2008 11:26

Re: Newline broken?
 
Quote:

Originally Posted by jgannon (Post 690160)
As it turns out, \r has traditionally been the standard for Macintosh. I don't know whether that has changed since Mac OS became more Unix-y. In any case, you're right that this problem has far less to do with C18 than it does with the program you're using to view your output.

Oh hm, you're right, according to the wiki article I linked to it was used pre-OS X.

Personally I like just a \n, even though \r\n matches up with history. Prior to nice monitors, people used line printers. A \n would feed paper. (It's actually called a Line Feed.) \r moved the printer carriage back to the left. Thus a \r\n positions it at the beginning of the next line, then we stopped using printers , and it was kept for compatibility reasons, and now no one should be using a line printers anymore... even though that'd be awesome.


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