[En-Nut-Discussion] RE: Compiler problem

[Rob van Lieshout (PragmaLab)]

Hello Herman,

the 'FRAM' variable indeeed comes from your Ethernut startup code
'crtnutram.s' and runtime enables exernal onboard RAM. Just make sure that
the linker flags (normally 'LDFLAGS') contain the '-dFRAM:1' option. This
way, your build as well as your code enable external RAM and not (like in
your case) only the code.

regards,

Rob van Lieshout

>Hello,

>I installed Ethernut Version 4.0.3 and use the AVR Icc V7 Compiler.
>When I compile a Project I get an error: 
>C:\iccv7avr\bin\imakew -f ftpd.mak iccavr -c -I..\..\include -e -
>D__ICC_VERSION="7.04A" -DETHERNUT2 -D_MCU_enhanced -D__HARVARD_ARCH__
>-DATMEGA -DATMega128  -l -g -Mavr_enhanced
>C:\ethernut-4.0.1\nut\app\ftpd\ftpserv.c
>!W C:\ethernut-4.0.1\nut\app\ftpd\ftpserv.c: [warning] in function
>'FtpThread', argument 'arg' has no use.
>!W C:\ethernut-4.0.1\nut\app\ftpd\ftpserv.c(299):[warning] source code
.specifies an infinite loop
>    iccavr -o ftpd -L..\..\lib\icc\enhanced -g -ucrtatmega.o
>-bfunc_lit:0x8c.0x20000 -dram_end:0x10ff -bdata:0x100.0x10ff
-dhwstk_size:16
>-beeprom:0.4096 -fihx_coff -ucrtnutram.o ..\..\lib\icc\enhanced\nutinit.o
>-S2 @ftpd.lk   -lnutpro -lnutfs -lnutnet -lnutos -lnutdev -lnutcrt
-lnutarch
>-lcatmega
>!ERROR file 'crtnutram.o': undefined symbol 'FRAM'
>C:\iccv7avr\bin\imakew.exe: Error code 1
>Done: there are error(s). Exit code: 1
>
>
>I found in the file extram.s this code:
>
>	MCUCR	= 0x35
>
>	ldi		R16,0x80		; extern RAM enable
>	ldi		R17,FRAM
>	sbrs	R17,0
>	ori		R16,0x40		; wait state
>	out		MCUCR,R16
>
>But when I replaced FRAM with 0x00 the error was the same.
>Can anybody help me?
>
>
>regards
>Hermann