Hi all,
I want to define variables in Crossworks assembler using the
DS directive. But always I get an error. I did several attempts
to define the sections, but none works as expected.
What am i doing wrong? Please have a look at my attempts...
///////////////////////////////////////////////////////////////
// this compiles & links, but i get amessage box when
// trying to upload: "section .abs is too big for target"
// The same happens when i omit all "ASEG" directives. When
// i remove the line
// "VZC DS.W 2 ; last captured value in CCR2"
// everything works
///////////////////////////////////////////////////////////////
ASEG 0200h
ORG 0200h
VZC DS.W 2 ; last captured value in CCR2
ASEG 01100h
ORG 01100h
RESET mov.w #0A00h,SP ; Initialize 'F149 stackpointer
StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
bic.b #WDTIFG,&IFG1 ; clear WDT interrupt
; ...more code
ASEG 0fffeh
ORG 0FFFEh ; MSP430 RESET Vector
DW RESET ;
END
///////////////////////////////////////////////////////////////
// this produces a linker error:
// 1.0.0/bin/hld: can't find an entry symbol (start or _main)
///////////////////////////////////////////////////////////////
.DSECT "IDATA0"
ORG 0200h
VZC DS.W 2 ; last captured value in CCR2
;------------------------
.PSECT "CODE"
ORG 01100h
;------------------------
RESET mov.w #0A00h,SP ; Initialize 'F149 stackpointer
StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
bic.b #WDTIFG,&IFG1 ; clear WDT interrupt
; ...more code
.PSECT "INTVEC"
ORG 0FFFEh ; MSP430 RESET Vector
DW RESET ;
END
/////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////
// this also produces a linker error:
// 1.0.0/bin/hld: can't find an entry symbol (start or _main)
///////////////////////////////////////////////////////////////
.DATA
ORG 0200h
VZC DS.W 2 ; last captured value in CCR2
.CODE
ORG 01100h
RESET mov.w #0A00h,SP ; Initialize 'F149 stackpointer
StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
bic.b #WDTIFG,&IFG1 ; clear WDT interrupt
; ...more code
.VECTOR
ORG 0FFFEh ; MSP430 RESET Vector
DW RESET ;
END
/////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////
// and this produces another linker error:
// "1.0.0/bin/hld: warning: IDATA0 overflows group--data ends at
0x1462 // and group end"
///////////////////////////////////////////////////////////////
.DATA
ORG 0200h
VZC DS.W 2 ; last captured value in CCR2
.ROOT
ORG 01100h
RESET mov.w #0A00h,SP ; Initialize 'F149 stackpointer
StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
bic.b #WDTIFG,&IFG1 ; clear WDT interrupt
; ...more code
.VECTOR
ORG 0FFFEh ; MSP430 RESET Vector
DW RESET ;
END
/////////////////////////////////////////////////////////////////
Thanks for your help.
regards,
Klaus
CrossWorks ASM, defining sections?
Started by ●May 13, 2003
Reply by ●May 14, 20032003-05-14
Hi Klaus,
Try this:
INCLUDE <msp430x14x.h>
.DATA
VZC DS.W 2 ; last captured value in CCR2
.CODE
.ROOT
RESET mov.w #0A00h,SP ; Initialize 'F149
stackpointer
StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
bic.b #WDTIFG,&IFG1 ; clear WDT interrupt
; ...more code
mov.w VZC, r4
.VECTORS
.ROOT
ORG 0x1e
DW RESET ;
END
ORG statements do *not* set the absolute position of a segment, but for
relocatable section they set an offset from the beginning of the section
(this is incorrectly documented in some places of the IAR
documentation...)
You just need to use the standard .DATA, .VECTORS, .CODE, and .ROOT
directives, along with the F149 memory map file.
If you open up the Symbol Browser and select Group By Section from the
dropdown tool button, you'll see the appropriate section details are all
correct.
-- Paul.
> -----Original Message-----
> From: kbox2003 [mailto:kbo@kbo@...]
> Sent: 13 May 2003 21:11
> To: msp430@msp4...
> Subject: [msp430] CrossWorks ASM, defining sections?
>
>
> Hi all,
>
> I want to define variables in Crossworks assembler using the
> DS directive. But always I get an error. I did several
> attempts to define the sections, but none works as expected.
>
> What am i doing wrong? Please have a look at my attempts...
>
> ///////////////////////////////////////////////////////////////
> // this compiles & links, but i get amessage box when
> // trying to upload: "section .abs is too big for target"
> // The same happens when i omit all "ASEG" directives. When
> // i remove the line
> // "VZC DS.W 2 ; last captured value in CCR2"
> // everything works
> ///////////////////////////////////////////////////////////////
> ASEG 0200h
>
> ORG 0200h
> VZC DS.W 2 ; last captured value in CCR2
>
> ASEG 01100h
>
> ORG 01100h
>
> RESET mov.w #0A00h,SP ; Initialize 'F149
> stackpointer
> StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
> bic.b #WDTIFG,&IFG1 ; clear WDT interrupt
>
> ; ...more code
>
> ASEG 0fffeh
>
> ORG 0FFFEh ; MSP430 RESET Vector
> DW RESET ;
> END
>
> ///////////////////////////////////////////////////////////////
> // this produces a linker error:
> // 1.0.0/bin/hld: can't find an entry symbol (start or _main)
> ///////////////////////////////////////////////////////////////
> .DSECT "IDATA0"
>
> ORG 0200h
> VZC DS.W 2 ; last captured value in CCR2
>
> ;------------------------
> .PSECT "CODE"
> ORG 01100h
> ;------------------------
> RESET mov.w #0A00h,SP ; Initialize 'F149
> stackpointer
> StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
> bic.b #WDTIFG,&IFG1 ; clear WDT interrupt
>
> ; ...more code
>
> .PSECT "INTVEC"
>
> ORG 0FFFEh ; MSP430 RESET Vector
> DW RESET ;
> END
> /////////////////////////////////////////////////////////////////
>
>
> ///////////////////////////////////////////////////////////////
> // this also produces a linker error:
> // 1.0.0/bin/hld: can't find an entry symbol (start or _main)
> ///////////////////////////////////////////////////////////////
> .DATA
>
> ORG 0200h
> VZC DS.W 2 ; last captured value in CCR2
>
> .CODE
> ORG 01100h
>
> RESET mov.w #0A00h,SP ; Initialize 'F149
> stackpointer
> StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
> bic.b #WDTIFG,&IFG1 ; clear WDT interrupt
>
> ; ...more code
>
> .VECTOR
>
> ORG 0FFFEh ; MSP430 RESET Vector
> DW RESET ;
> END
> /////////////////////////////////////////////////////////////////
>
> ///////////////////////////////////////////////////////////////
> // and this produces another linker error:
> // "1.0.0/bin/hld: warning: IDATA0 overflows group--data ends
> at 0x1462 // and group end"
////////////////////////////////////////////////> ///////////////
> .DATA
>
> ORG 0200h
> VZC DS.W 2 ; last captured value in CCR2
>
> .ROOT
> ORG 01100h
>
> RESET mov.w #0A00h,SP ; Initialize 'F149
> stackpointer
> StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
> bic.b #WDTIFG,&IFG1 ; clear WDT interrupt
>
> ; ...more code
>
> .VECTOR
>
> ORG 0FFFEh ; MSP430 RESET Vector
> DW RESET ;
> END
> /////////////////////////////////////////////////////////////////
>
> Thanks for your help.
>
> regards,
> Klaus
>
>
>
>
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Reply by ●May 14, 20032003-05-14
Hello Paul,
thanks very much for your support. This works
perfectly. I did not know that the ORG directive
behaves that way and that i have to use the .ROOT
directive also. Took me hours. I never will
forget that ;)
regards,
Klaus
--- In msp430@msp4..., "Paul Curtis" <plc@r...> wrote:
> Hi Klaus,
>
> Try this:
>
> INCLUDE <msp430x14x.h>
> .DATA
>
> VZC DS.W 2 ; last captured value in CCR2
>
> .CODE
> .ROOT
>
> RESET mov.w #0A00h,SP ; Initialize 'F149
> stackpointer
> StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
> bic.b #WDTIFG,&IFG1 ; clear WDT interrupt
>
> ; ...more code
> mov.w VZC, r4
>
> .VECTORS
> .ROOT
> ORG 0x1e
>
> DW RESET ;
> END
>
> ORG statements do *not* set the absolute position of a segment, but for
> relocatable section they set an offset from the beginning of the section
> (this is incorrectly documented in some places of the IAR
> documentation...)
>
> You just need to use the standard .DATA, .VECTORS, .CODE, and .ROOT
> directives, along with the F149 memory map file.
>
> If you open up the Symbol Browser and select Group By Section from the
> dropdown tool button, you'll see the appropriate section details are
all
> correct.
>
> -- Paul.
>
Reply by ●May 14, 20032003-05-14
Hi Klaus, > thanks very much for your support. No problem. That's what we're here for. > This works perfectly. Good. :-) > I did not know that the ORG directive > behaves that way and that i have to use the .ROOT > directive also. This is all documented in the help system. I'm currently working on a PDF version of our help system generated from the XHTML, so perhaps users will find this better for looking through, and then we'll also offer the option of printed manuals. > Took me hours. I never will > forget that ;) Sorry it took hours; if you'd asked earlier, then perhaps we could have saved you some time. :-( -- Paul.
