Post by thread:Pragma Statements, Linker Files, and Memory Module

Hi! We are working with MPLAB-C17 v2.20, MPLINK v1.10.05, Linker, and the latest version of MPLAB IDE (3.99.06). Also we are using Rice 2.30.01 with the RICE17A emulator. Our target processor is the PIC17C752. My general question is if anyone has a really good linker file tutorial which is a tad more explicit than the one provided by Microchip... ie: explains exactly how pragma statements and linker files interact. Also, if anyone has any good examples of pragma usage with certain memory modules I would greatly appreciate it. We thought we had this linker file nightmare licked with section declaration and related pragma directives... but sometimes we still get errors such as: >Error - could not resolve symbol 'IdentecPIV' in file '.\PORT.O'. >Errors : 1 >Warnings : 0 > ...When port.c (contains main() ) calls the function IdentecPIV() and both IdentecPIV() and main() have the same pragma statement: "#pragma code eprom" where "eprom" is a section defined in the linker file!!! CODEPAGE NAME=page START=0x28 END=0x1FFF SECTION NAME=eprom ROM=page If you have any suggestions or similar problems which you have found a solution for then please email me back. Thanks for your time. Chris Eh? Chris Adamson, Programmer Identec Solutions spam_OUTcadamsonTakeThisOuTidentec.com phone: 1-250-860-6567

So I not the only one. I have been working on the link file for a few weeks. Will right later when I am better informed. Paul Smargiassi Chris Adamson wrote: {Quote hidden}> > Hi! > > We are working with MPLAB-C17 v2.20, MPLINK v1.10.05, Linker, and the > latest version of MPLAB IDE (3.99.06). Also we are using Rice 2.30.01 with > the RICE17A emulator. Our target processor is the PIC17C752. > > My general question is if anyone has a really good linker file tutorial > which is a tad more explicit than the one provided by Microchip... ie: > explains exactly how pragma statements and linker files interact. > > Also, if anyone has any good examples of pragma usage with certain memory > modules I would greatly appreciate it. > > We thought we had this linker file nightmare licked with section > declaration and related pragma directives... but sometimes we still get > errors such as: > >Error - could not resolve symbol 'IdentecPIV' in file '.\PORT.O'. > >Errors : 1 > >Warnings : 0 > > > ...When port.c (contains main() ) calls the function IdentecPIV() and both > IdentecPIV() and main() have the same pragma statement: "#pragma code > eprom" where "eprom" is a section defined in the linker file!!! > > CODEPAGE NAME=page START=0x28 END=0x1FFF > SECTION NAME=eprom ROM=page > > If you have any suggestions or similar problems which you have found a > solution for then please email me back. > > Thanks for your time. > Chris Eh? > > Chris Adamson, Programmer > Identec Solutions > .....cadamsonKILLspam@spam@identec.com > phone: 1-250-860-6567

The pragmas and linker script entries listed below should work just fine. They will locate the section named 'eprom' into page 0 of the target. The linker error described means that the linker isn't able to find the IdentecPIV() symbol in any of the modules passed to it. As a first step, check to make sure that the file which contains IdentecPIV() is a member of the project being built. Keep in mind that the compiler and linker are case sensitive, so the symbols IdentecPIV() and identecPIV(), for example, are distinct. Jim Grosbach Microchip Technology ____________________Reply Separator____________________ Subject: Pragma Statements, Linker Files, and Memory Modules Oh my! Author: .....PICLISTKILLspam.....MITVMA.MIT.EDU (Chris Adamson) Date: 7/28/98 4:07 PM Hi! We are working with MPLAB-C17 v2.20, MPLINK v1.10.05, Linker, and the latest version of MPLAB IDE (3.99.06). Also we are using Rice 2.30.01 with the RICE17A emulator. Our target processor is the PIC17C752. My general question is if anyone has a really good linker file tutorial which is a tad more explicit than the one provided by Microchip... ie: explains exactly how pragma statements and linker files interact. Also, if anyone has any good examples of pragma usage with certain memory modules I would greatly appreciate it. We thought we had this linker file nightmare licked with section declaration and related pragma directives... but sometimes we still get errors such as: >Error - could not resolve symbol 'IdentecPIV' in file '.\PORT.O'. >Errors : 1 >Warnings : 0 > ...When port.c (contains main() ) calls the function IdentecPIV() and both IdentecPIV() and main() have the same pragma statement: "#pragma code eprom" where "eprom" is a section defined in the linker file!!! CODEPAGE NAME=page START=0x28 END=0x1FFF SECTION NAME=eprom ROM=page If you have any suggestions or similar problems which you have found a solution for then please email me back. Thanks for your time. Chris Eh? Chris Adamson, Programmer Identec Solutions EraseMEcadamsonspam_OUTTakeThisOuTidentec.com phone: 1-250-860-6567 ------------------------- Original message header: >MAIL FROM:<owner-piclistspam_OUTMITVMA.MIT.EDU> >RCPT TO:<@spam@james.grosbachKILLspamccmail.Microchip.COM> >DATA >Received: from prometheus.Microchip.COM (KILLspamfirewall-userKILLspamprometheus-gate.Microchi p.COM [198.175.253.129]) by titan.Microchip.COM (8.6.12/8.6.12) with SMTP id QAA 06862 for <RemoveMEJames.GrosbachTakeThisOuTMicrochip.COM>; Tue, 28 Jul 1998 16:07:21 -0700 >Received: by prometheus.Microchip.COM; id AA01885; Tue, 28 Jul 98 16:36:08 MST >Received: from vms.dc.lsoft.com(206.241.13.27) by prometheus.Microchip.COM via smap (3.2) id xma001633; Tue, 28 Jul 98 16:35:36 -0700 >Received: from PEAR.EASE.LSOFT.COM (206.241.12.19) by VMS.DC.LSOFT.COM (LSMTP f or OpenVMS v1.1b) with SMTP id <spamBeGone12.FF91A945spamBeGoneVMS.DC.LSOFT.COM>; Tue, 28 Jul 1998 19:06:34 -0500 >Received: from MITVMA.MIT.EDU by MITVMA.MIT.EDU (LISTSERV release 1.8c) with NJ E id 2610 for TakeThisOuTPICLISTEraseMEspam_OUTMITVMA.MIT.EDU; Tue, 28 Jul 1998 19:07:51 -0400 >Received: from MITVMA (NJE origin SMTP@MITVMA) by MITVMA.MIT.EDU (LMail V1.2b/1 .8b) with BSMTP id 6352; Tue, 28 Jul 1998 19:06:01 -0400 >Received: from *unknown [207.194.80.200] by mitvma.mit.edu (IBM VM SMTP V2R4a) via TCP with SMTP ; Tue, 28 Jul 1998 19:05:59 EDT >X-Warning: mitvma.mit.edu: Could not confirm that host [207.194.80.200] is zeu s.cnx.net >Received: from cadamson.cnx.net (unverified [209.53.89.97]) by zeus.cnx.net (Ro ckliffe SMTPRA 2.1.5) with SMTP id <RemoveMEB0000264551TakeThisOuTzeus.cnx.net> for <PICLIST@MITVM A.MIT.EDU>; Tue, 28 Jul 1998 16:05:23 -0700 {Quote hidden}>X-Sender: cadamsonEraseME.....identec.com >X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.5 (32) >Mime-Version: 1.0 >Content-Type: text/plain; charset="us-ascii" >Message-Id:<EraseME3.0.5.32.19980728160757.007c2c60identec.com>> >Date: Tue, 28 Jul 1998 16:07:57 -0700 >Reply-To: pic microcontroller discussion list <RemoveMEPICLISTEraseMEEraseMEMITVMA.MIT.EDU> >Sender: pic microcontroller discussion list <RemoveMEPICLISTspam_OUTKILLspamMITVMA.MIT.EDU> >From: Chris Adamson <RemoveMEcadamsonTakeThisOuTspamIDENTEC.COM> >Subject: Pragma Statements, Linker Files, and Memory Modules Oh my! >To: EraseMEPICLISTspamspamBeGoneMITVMA.MIT.EDU ------------------------- End of message header.