Adding custom ML tflite models with CFU

[bala122]

I'm not sure about the procedure to add your own custom tflite model with CFU. Does this framework support custom ML models as well? I'm getting this issue when I attempt at adding a new model in the makefile:

/home/shivaubuntu/riscv64-unknown-elf-gcc-10.1.0-2020.08.2-x86_64-linux-ubuntu14/bin/../lib/gcc/riscv64-unknown-elf/10.1.0/../../../../riscv64-unknown-elf/bin/ld: src/models/models.o: in function .LANCHOR0': models.c:(.sdata.MENU+0x10): undefined reference to no_menu' collect2: error: ld returned 1 exit status make[1]: *** [Makefile:163: software.elf] Error 1 make[1]: Leaving directory '/home/shivaubuntu/CFU-playground/CFU-Playground/proj/proj_custom/build' make: *** [../proj.mk:215: /home/shivaubuntu/CFU-playground/CFU-Playground/proj/proj_custom/build/software.elf] Error 2

[bala122]

I've even followed all the steps by an earlier issue: https://github.com/google/CFU-Playground/issues/221

I'm still getting the same error. I'm using the August build of the SiFive compiler: https://github.com/sifive/freedom-tools/releases/tag/v2020.08.0 I've even tried using the riscv64 gcc compiler available in riscv-gnu toolchain, but even that doesnt seem to work. Any suggestions on compilers to use would be helpful

[alanvgreen]

Hi @bala122,

Did you follow this part of the instructions?

After creating your model folder, make it accessible from the menus by adding it to /common/src/models.c.

If that's not the problem, could you perhaps upload a Draft PR containing your code so far, and someone might be able to take a look at it.

Thanks,

Alan

[bala122]

Hi, yes I've tried that, but the issue is still present. Ive added a Draft PR: https://github.com/google/CFU-Playground/pull/456 Specifically under "sudo make renode", I'm getting this:

make[1]: riscv64-unknown-elf-g++: Command not found make[1]: *** [Makefile:163: software.elf] Error 127 make[1]: Leaving directory '/home/shivaubuntu/CFU-playground/CFU-Playground/proj/proj_custom/build' make: *** [../proj.mk:215: /home/shivaubuntu/CFU-playground/CFU-Playground/proj/proj_custom/build/software.elf] Error 2

[alanvgreen]

Thanks for uploading your code. I only had time to take a quick look, but I can't see an obvious problem with it.

make[1]: riscv64-unknown-elf-g++: Command not found

Make is saying that it can't find the RISCV C++ compiler on your path. Could you maybe try fixing that, first?

[bala122]

I've installed the August version of the SiFive gcc compiler from freedom tools: https://github.com/sifive/freedom-tools/releases/tag/v2020.08.0 I've even tried with the normal riscv-gnu-toolchain compiler it didnt work. I think the compiler is recognized whenever I type "which riscv64-unknown-elf-g++"

[tcal-x]

Specifically under "sudo make renode", I'm getting this:

Hi @bala122 , can you send me the link to where you see this specifically? I'm puzzled why the instructions say to use "sudo". Thanks!

[bala122]

Hi, actually the issue is resolved I think. I deleted the soc build and redid it with the normal "make renode" command, it worked. I'll let you know if there are any further issues. Thanks, Bala.

[tcal-x]

Hi @bala122 , thanks for the update; if you have any suggestions for improving the documentation, we would like to hear! I know it is quite complicated and we might not explain every step well.

Do you think you will upstream your model at some point? It's fine either way of course.

[bala122]

Hi, yes Ill try to give suggestions later on regarding the documentation. As of now I havent fully finished the design, so Ill let you know about that when its done. Thanks.