StrFnd Function

JeffLewcock · Joined: 10 Apr 2007 Posts: 29

Not sure if this question is really for this forum but here goes

I need but cannot find a good description of strfnd in string.h

I'm trying to work out how it is used in this code snippet

temtronic · Posted: Wed Jan 30, 2013 3:19 pm

from...
$GPRMC,220516,A,5133

1st comma is at position 6

'A' is at position 14

at least that's the way I count it...

not '18'

or am I missing something here ??

hth
jay

JeffLewcock · Joined: 10 Apr 2007 Posts: 29

Hi Temtronic

No I dont think you're missing anything thats what I though.

I cannot find a good explanation of the strfnd function so cant see what the p1+1 bit is doing either

The code is from here

http://www.ccsinfo.com/forum/viewtopic.php?t=45827&highlight=gprmc+decode

at void GPRMC_decode(char *GPRMCStr, GPRMCInfo *RMCInfo)

and the program as a whole works

I wanted to work out how it works as I want to decode $GPGSA and $GPGSV strings as well

Jeff

JeffLewcock · Joined: 10 Apr 2007 Posts: 29

I made a mistake, I assumed strfnd was the same as strfind I don't think it is

as strfnd is defined in the program thus

PICoHolic · Joined: 04 Jan 2005 Posts: 224

The function StrFnd(char *s, char c, size_t st) returns the position of the character c in the string s, starting at position st (zero-base index).

Cheers

bkamen · Posted: Fri Feb 01, 2013 12:34 am

Where are you finding a 'strfnd' function for PIC-C?

I don't see one at all in string.h nor is it listed in the compiler help manual.

I think you want strchr which is listed in the manual.

(and if you're rolling through GPS sentences, strtok is nice too)

-Ben
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