PIC / MPLAB PICC new user prob....
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From: Nik Rim on 4 Sep 2009 03:55 Trying to learn some C with PICs and I've fallen over before I've even started. I'm running MPLAB with PICC18 (lite student version). When I try to compile I get an error: "Error - could not find definition of symbol 'TRISD' in file './01 Hello LED.o'. Errors : 1 Link step failed." In the project I have "p18f45k20.h" included under header files, TRISD is defined in this file but the compiler seems to be looking for the definition in "01 Hello LED.o". Anyone tell me what I've missed? thanks Nik // PIC18F46K20 Starter Kit Lesson 1 - Hello LED // This lesson turns on LED 7 on the demo board. #pragma config FOSC = INTIO67 #pragma config WDTEN = OFF, LVP = OFF, MCLRE = OFF #include "p18f45k20.h" void main (void) { TRISD = 0b01111111; // PORTD bit 7 to output (0); bits 6:0 are inputs (1) LATDbits.LATD7 = 1; // Set LAT register bit 7 to turn on LED while (1) ; }
From: don on 4 Sep 2009 10:29 Nik Rim wrote: > Trying to learn some C with PICs and I've fallen over before I've even > started. > > I'm running MPLAB with PICC18 (lite student version). When I try to compile > I get an error: > > "Error - could not find definition of symbol 'TRISD' in file './01 Hello > LED.o'. > Errors : 1 > Link step failed." > > > > In the project I have "p18f45k20.h" included under header files, TRISD is > defined in this file but the compiler seems to be looking for the definition > in "01 Hello LED.o". > > > Anyone tell me what I've missed? > > thanks > Nik > > > > > > // PIC18F46K20 Starter Kit Lesson 1 - Hello LED > // This lesson turns on LED 7 on the demo board. > > #pragma config FOSC = INTIO67 > #pragma config WDTEN = OFF, LVP = OFF, MCLRE = OFF > > #include "p18f45k20.h" > > > void main (void) > { > > TRISD = 0b01111111; // PORTD bit 7 to output (0); bits 6:0 are inputs (1) > > LATDbits.LATD7 = 1; // Set LAT register bit 7 to turn on LED > > while (1) > ; > > } > > MPLAB -> Project -> Set Language Tool Locations -> MicroChip C18 ToolSuite -> Default Search Paths & Directories -> Library Search Path, $(LIBDIR) C:\<Fill in where ever you installed the compiler> \lib -> OK don
From: Nik Rim on 4 Sep 2009 10:57 <don> wrote in message news:3u-dnXmoueSvuTzXnZ2dnUVZ_jhi4p2d(a)forethought.net... > Nik Rim wrote: >> Trying to learn some C with PICs and I've fallen over before I've even >> started. >> >> I'm running MPLAB with PICC18 (lite student version). When I try to >> compile I get an error: >> >> "Error - could not find definition of symbol 'TRISD' in file './01 Hello >> LED.o'. >> Errors : 1 >> Link step failed." >> >> >> >> In the project I have "p18f45k20.h" included under header files, TRISD is >> defined in this file but the compiler seems to be looking for the >> definition in "01 Hello LED.o". >> >> >> Anyone tell me what I've missed? >> >> thanks >> Nik >> >> >> >> >> >> // PIC18F46K20 Starter Kit Lesson 1 - Hello LED >> // This lesson turns on LED 7 on the demo board. >> >> #pragma config FOSC = INTIO67 >> #pragma config WDTEN = OFF, LVP = OFF, MCLRE = OFF >> >> #include "p18f45k20.h" >> >> >> void main (void) >> { >> >> TRISD = 0b01111111; // PORTD bit 7 to output (0); bits 6:0 are inputs >> (1) >> >> LATDbits.LATD7 = 1; // Set LAT register bit 7 to turn on LED >> >> while (1) >> ; >> >> } > > > MPLAB -> Project -> Set Language Tool Locations -> MicroChip C18 > ToolSuite -> > Default Search Paths & Directories -> Library Search Path, $(LIBDIR) > C:\<Fill in where ever you installed the compiler> \lib -> OK > > don > I checked as suggested, the paths were as follows and the directories appeared to contain the .inc & .lib files Include search path: C:\MCC18\mpasm Library search path: C:\MCC18\lib Thanks for the suggestion - it must be something else simple like that, I'll go look some more. cheers Nik
From: Nobody on 4 Sep 2009 20:28 On Fri, 04 Sep 2009 15:55:19 +0800, Nik Rim wrote: > Trying to learn some C with PICs and I've fallen over before I've even > started. > > I'm running MPLAB with PICC18 (lite student version). When I try to compile > I get an error: > > "Error - could not find definition of symbol 'TRISD' in file './01 Hello > LED.o'. > Errors : 1 > Link step failed." > > > > In the project I have "p18f45k20.h" included under header files, TRISD is > defined in this file I suspect that TRISD will only be *declared* in that file, not defined there. For Microchip's MCC18, the definitions are in p18f45k20.lib. This is normally linked in by an entry in the linker script (.lkr), e.g.: FILES p18f45k20.lib If you aren't using a linker script, you'll need to add the library to the project.
From: Nik Rim on 8 Sep 2009 00:07
"Nobody" <nobody(a)nowhere.com> wrote in message news:pan.2009.09.05.00.28.39.719000(a)nowhere.com... > On Fri, 04 Sep 2009 15:55:19 +0800, Nik Rim wrote: > >> Trying to learn some C with PICs and I've fallen over before I've even >> started. >> >> I'm running MPLAB with PICC18 (lite student version). When I try to >> compile >> I get an error: >> >> "Error - could not find definition of symbol 'TRISD' in file './01 Hello >> LED.o'. >> Errors : 1 >> Link step failed." >> >> >> >> In the project I have "p18f45k20.h" included under header files, TRISD is >> defined in this file > > I suspect that TRISD will only be *declared* in that file, not defined > there. > > For Microchip's MCC18, the definitions are in p18f45k20.lib. This is > normally linked in by an entry in the linker script (.lkr), e.g.: > > FILES p18f45k20.lib > > If you aren't using a linker script, you'll need to add the library to > the project. > Thanks - just tried making that change & unfortunately it didn't work. I've changed the lib path directory as suggested by don. Didn't fix it but now having played with all the paths, it progresses further and spits out a syntx error from the first line in the .inc file. Its reporting the ";" which makes sense as I assume it should be "//" for C. Surely I must be doing something fundamental wrong here! It's a pain being a noob! |