SROM Sections

Hi Barry,

unfortunetaly no, as far as I know.
You have to get the length from a look inside the map file.
But may be, you can combine your code
in one class (using #pragma rename CODECLASS=YOURCLASS) for this module
and locate the whole class, for e.g.
MYCLASS(0xE00000-0xE00420)
instead of:
?PR?ABC%ABC_CODE(0xe00000),
?PR?DEF%DEF_CODE(0xe00400)

But you have also to get the length, from the
map. I hope KEIL support can answer this question.

Stefan

Try just to state the second section without address specification. So this should work:
?PR?ABC%ABC_CODE(0xe00000)[],
?PR?DEF%DEF_CODE[]

Dear KEIL team,

thank's for support! ;-)

Stefan

This is excellent! This whole SROM feature is great.

Well I tried this and it does not work unfortunately. Removing the exec_address causes the line in my code that copies this from Flash to RAM

hmemcpy(SROM_PS_TRG(ABC), SROM_PS_SRC(ABC), SROM_PS_LEN(ABC));
hmemcpy(SROM_PS_TRG(DEF), SROM_PS_SRC(DEF), SROM_PS_LEN(DEF));

*** ERROR L127: UNRESOLVED EXTERNAL SYMBOL
    SYMBOL:  _PR_DEF_s_
    MODULE:  ..\objFiles\MAIN.obj (MAIN)

*** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL
    SYMBOL:  _PR_DEF_s_
    MODULE:  ..\objFiles\MAIN.obj (MAIN)
    ADDRESS: 002EH

*** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL
    SYMBOL:  _PR_DEF_s_
    MODULE:  ..\objFiles\MAIN.obj (MAIN)
    ADDRESS: 0032H

?PR?ABC%ABC_CODE(0xe00000)[],
?PR?DEF%DEF_CODE[]

I tried it out too,

with an own little example and it works with the syntax as provided by KEIL's support.
I was able to locate two datasections directly after each other and a codesection
to a specific place.
The syntax error was not reproduceable to me.

I used following syntax with an own little
testprogram I wrote:

?ID?MYSEC2%IDATA(0x00F600)[],?ID?MYSEC1%IDATA[],
?PR?TESTCLASS%NCODE(0xC0E000)

Hi Barry,

may be under L166/MISC the box
"Create Relocatable Output File (LINKONLY)"
is checked ?

If I do so I can produce unresolved externals.
If you uncheck this, these errors should be disappear.

I can reproduce this behaviour.

A checked LINKONLY seems to be default.

Stefan

Thanks Stefan but LINK_ONLY is not checked.
Your example uses a data section. Have you tried using a code section, placing it in the SROM class and then copy the code to the RAM area as in Keil App Note 138? My code works correctly if the exec_address is included in the specification for each section I want placed in the SROM class but fails with the formerly mentioned errors when I remove the exec_address from all but the first User Section.

Thanks Stefan but LINK_ONLY is not checked.
Your example uses a data section. Have you tried using a code section, placing it in the SROM class and then copy the code to the RAM area as in Keil App Note 138? My code works correctly if the exec_address is included in the specification for each section I want placed in the SROM class but fails with the formerly mentioned errors when I remove the exec_address from all but the first User Section.

Hi Barry,

no I did it not with the SROM class.
I only checked the syntax.
Generally I have used with code section,
which was working too.
Give me time to try and check out with SROM class.

Stefan

That's me again.
I try it and it will not work with SROM class. I played additionally with '&' sign to try append the second section directly,
but there was not the effect, that areas for
execution was append direct each after another. :-(

Stefan