Hello,

Has anyone already compiled a RTOSDemo for the XMC4500 Infineon Cortex M4 with DAVE3 IDE?
I use the atollic demo as a startup but i get some errors from the linker.

./src/Common_Demo_Source/semtest.o ./src/Common_Demo_Source/sp_flop.o  ./src/main_blinky.o ./src/main_full.o  ./Startup/startup_XMC4500.o ./Startup/system_XMC4500.o  ./Main.o   
c:/dave-3.1.0/arm-gcc/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7e-m\libg.a(lib_a-sbrkr.o): In function `_sbrk_r':
sbrkr.c:(.text+0xc): undefined reference to `_sbrk'
c:/dave-3.1.0/arm-gcc/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7e-m\libg.a(lib_a-abort.o): In function `abort':
abort.c:(.text+0xa): undefined reference to `_exit'
c:/dave-3.1.0/arm-gcc/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7e-m\libg.a(lib_a-signalr.o): In function `_kill_r':
signalr.c:(.text+0xe): undefined reference to `_kill'
c:/dave-3.1.0/arm-gcc/bin/../lib/gcc/arm-none-eabi/4.6.2/../../../../arm-none-eabi/lib/armv7e-m\libg.a(lib_a-signalr.o): In function `_getpid_r':
signalr.c:(.text+0x28): undefined reference to `_getpid'
collect2: ld returned 1 exit status
make: *** [test.elf] Error 1

So there are some syscalls missing!
So i can fix some calls but i do not know why i need
_exit, _kill_r and _getpid_r

Thanks for you help
mgiaco

Can you compare the command line generated by Dave with that generated by the official FreeRTOS demo? Presumably it is including additional files or libraries to provide the system calls - or it is using different start up files that have the system calls included.

Regards.

Hello,

Tanks for your help. So i use the Attolic Demo with all the startup files and linker files. I also check the compiler flags everything seems to be the same.

I think you that Dave3 is the new and free IDE from Infineon wich is comming with the free GNU ARM Compiler. So i think the problem is the newlib use with this toolchain.

Are there any plans to prepare a Demo for this free IDE?

Regards,

If it is using Newlib then it might be that it simply doesn't have system calls implemented, as these are not generic. Search the FreeRTOS/Semo directory for a file called syscalls.c. This has a few stub functions that you might be able to adapt to get your project to link. It is included in some demos that use Newlib I think.

Also search the archive for "syscalls yagarto" for (possibly) more information http://www.freertos.org/FreeRTOS_Support_Forum_Archive/freertos_support_forum_archive_index.html

Regards.