Check out http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=38003
Best regards, Stu Bell DataPlay (DPHI, Inc.) > -----Original Message----- > From: avr-gcc-list-bounces+sbell=dataplay....@nongnu.org > [mailto:avr-gcc-list-bounces+sbell=dataplay....@nongnu.org] > On Behalf Of Robert von Knobloch > Sent: Friday, March 13, 2009 6:51 AM > To: avr-gcc-list@nongnu.org > Subject: [avr-gcc-list] Strings in ROM > > Dear GCC-List, > > I am writing an application that uses loadable portions of > code (it is a tester for embedded products, where the target > code and test routines will be sent to a remote location [the > factory] and loaded into the tester via an Intel Hex download > routine]. These 'test modules' are in pre-defined memory > areas of the processor (Mega644), so no contention occurs. > Writing these loadable modules requires that I only use > resources inside these memory areas. I need to output strings > to an LCD display in these modules. Clearly printf > "something" would require entries in the base .text area > which would move my main routines. I want to use 'prog_char[] > ="Something", but the compiler won't let me put this in a section. > > e.g. > > #define SECTION TEST1_SECTION > > SECTION prog_char press_button[] = ">> Press UUT button <<"; > SECTION prog_char button_timeout[] = "*** Error - Timeout! ***"; > > where the linker sees: > LDFLAGS = -Wl,-Map,$(PRG).map \ > -Wl,--section-start=.test0=0x2600 \ > -Wl,--section-start=.testparms0=0x2e80 \ > -Wl,--section-start=.test1=0x2f00 \ > -Wl,--section-start=.testparms1=0x3780 > > 'make' results in: > > avr-gcc -g -Wall -Os -mmcu=atmega644 -DF_CPU=20000000 -c > -o main.o > main.c > In file included from main.c:25: > tests.c:138: error: section of 'press_button' conflicts with > previous declaration > tests.c:139: error: section of 'button_timeout' conflicts > with previous declaration > > I cannot find where 'prog_char is defined and would like to > know how I can force the compiler to put these strings in my > 'test1' section. > > Many thanks, > > Robert > > > > > > _______________________________________________ > AVR-GCC-list mailing list > AVR-GCC-list@nongnu.org > http://lists.nongnu.org/mailman/listinfo/avr-gcc-list > _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
