Help in creating a simple Application for Nucelo-N6 with NPU

[LukasOst]

Hello everbody

I am struggling creating a project which uses the ART-Accelerator and compiles. There are always some errors. It feels like i searched every possible document from ST but i haven't found a basic get started guide or something like that which uses the Nucleo-N6. I also tried multiple combination of FSBL, Application (even though i am not sure when to use which but thats a other topic).
The basic template which auto generates when making a new project ran. I wasted already so much time on this so any help is welcome.
How i am creating a project in CubeIDE:
- New project and choose Nucelo-N6 with FSBL only
- Go to .ioc choose X-Cube-AI 10.0.0, tick core and choose application template
- load model and run analyze, validate on desktop and take a look at the Graph: Graph looks weird with blocks not connected, if i choose MCU runtime Graph looks fine but i want to use NPU
- Save and generate Code
- Try to compile -> Errors

../X-CUBE-AI/App/app_x-cube-ai.c:100:5: warning: implicit declaration of function 'HAL_RIF_RISC_SetSlaveSecureAttributes' [-Wimplicit-function-declaration]
100 | HAL_RIF_RISC_SetSlaveSecureAttributes(RIF_RISC_PERIPH_INDEX_NPU, RIF_ATTRIBUTE_PRIV | RIF_ATTRIBUTE_SEC);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../X-CUBE-AI/App/app_x-cube-ai.c:100:43: error: 'RIF_RISC_PERIPH_INDEX_NPU' undeclared (first use in this function)
100 | HAL_RIF_RISC_SetSlaveSecureAttributes(RIF_RISC_PERIPH_INDEX_NPU, RIF_ATTRIBUTE_PRIV | RIF_ATTRIBUTE_SEC);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
../X-CUBE-AI/App/app_x-cube-ai.c:100:43: note: each undeclared identifier is reported only once for each function it appears in
../X-CUBE-AI/App/app_x-cube-ai.c:100:70: error: 'RIF_ATTRIBUTE_PRIV' undeclared (first use in this function)
100 | HAL_RIF_RISC_SetSlaveSecureAttributes(RIF_RISC_PERIPH_INDEX_NPU, RIF_ATTRIBUTE_PRIV | RIF_ATTRIBUTE_SEC);
| ^~~~~~~~~~~~~~~~~~
../X-CUBE-AI/App/app_x-cube-ai.c:100:91: error: 'RIF_ATTRIBUTE_SEC' undeclared (first use in this function)
100 | HAL_RIF_RISC_SetSlaveSecureAttributes(RIF_RISC_PERIPH_INDEX_NPU, RIF_ATTRIBUTE_PRIV | RIF_ATTRIBUTE_SEC);
| ^~~~~~~~~~~~~~~~~
make: *** [X-CUBE-AI/App/subdir.mk:22: X-CUBE-AI/App/app_x-cube-ai.o] Error 1
"make -j24 all" terminated with exit code 2. Build might be incomplete.

I tried to get rid of the errors by configuring the .ioc:
Pintout -> CHACHEAXI -> tick FSBL

But then even more erros occure:
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/lib/thumb/v8-m.main+dp/hard/libc_nano.a(libc_a-closer.o): in function `_close_r':
(.text._close_r+0xc): warning: _close is not implemented and will always fail
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/lib/thumb/v8-m.main+dp/hard/libc_nano.a(libc_a-lseekr.o): in function `_lseek_r':
(.text._lseek_r+0x10): warning: _lseek is not implemented and will always fail
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/lib/thumb/v8-m.main+dp/hard/libc_nano.a(libc_a-readr.o): in function `_read_r':
(.text._read_r+0x10): warning: _read is not implemented and will always fail
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/lib/thumb/v8-m.main+dp/hard/libc_nano.a(libc_a-writer.o): in function `_write_r':
(.text._write_r+0x10): warning: _write is not implemented and will always fail
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: ./Core/Src/main.o: in function `MX_CACHEAXI_Init':
/home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../Core/Src/main.c:224: undefined reference to `HAL_CACHEAXI_Init'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: ./X-CUBE-AI/App/app_x-cube-ai.o: in function `MX_X_CUBE_AI_Init':
/home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/app_x-cube-ai.c:100: undefined reference to `HAL_RIF_RISC_SetSlaveSecureAttributes'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/app_x-cube-ai.c:105: undefined reference to `npu_cache_init'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: ./X-CUBE-AI/App/app_x-cube-ai.o: in function `MX_X_CUBE_AI_Process':
/home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/app_x-cube-ai.c:118: undefined reference to `LL_ATON_RT_RuntimeInit'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/app_x-cube-ai.c:127: undefined reference to `LL_ATON_RT_Init_Network'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/app_x-cube-ai.c:130: undefined reference to `LL_ATON_RT_RunEpochBlock'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/app_x-cube-ai.c:139: undefined reference to `LL_ATON_RT_DeInit_Network'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/app_x-cube-ai.c:144: undefined reference to `LL_ATON_RT_RuntimeDeInit'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: ./X-CUBE-AI/App/network.o: in function `LL_ATON_End_EpochBlock_2':
/home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/network.c:179: undefined reference to `ll_sw_forward_conv'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/network.c:188: undefined reference to `mcu_cache_clean_range'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: ./X-CUBE-AI/App/network.o: in function `LL_ATON_End_EpochBlock_3':
/home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/network.c:248: undefined reference to `ll_sw_forward_arith'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/network.c:257: undefined reference to `mcu_cache_clean_range'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: ./X-CUBE-AI/App/network.o: in function `LL_ATON_End_EpochBlock_5':
/home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/network.c:307: undefined reference to `ll_sw_forward_activ'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/network.c:316: undefined reference to `mcu_cache_clean_range'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: ./X-CUBE-AI/App/network.o: in function `LL_ATON_End_EpochBlock_7':
/home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/network.c:339: undefined reference to `mcu_cache_invalidate_range'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/network.c:397: undefined reference to `ll_sw_forward_conv'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/network.c:406: undefined reference to `mcu_cache_clean_range'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: ./X-CUBE-AI/App/network.o: in function `LL_ATON_End_EpochBlock_8':
/home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/network.c:427: undefined reference to `mcu_cache_invalidate_range'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/network.c:480: undefined reference to `ll_sw_forward_arith'
/opt/st/stm32cubeide_1.17.0/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.12.3.rel1.linux64_1.1.0.202410170702/tools/bin/../lib/gcc/arm-none-eabi/12.3.1/../../../../arm-none-eabi/bin/ld: /home/lukasschoepf/STM32CubeIDE/workspace_1.17.0/Testing_NUCELO_N6/FSBL/Debug/../X-CUBE-AI/App/network.c:489: undefined reference to `mcu_cache_clean_range'
collect2: error: ld returned 1 exit status
make: *** [makefile:68: Testing_NUCELO_N6_FSBL.elf] Error 1
"make -j24 all" terminated with exit code 2. Build might be incomplete.

Can someone please help? Is there a problem with the NPU and CubeMX?

[Julian E. · Accepted solution]

Hello @LukasOst,

Sorry for the lat answer.

There are indeed some errors coming from cubeMX. We are addressing some of them in the next patch of X Cube AI (end of april).

We are working on a simple example of running a model on the Nucleo N6 as we don't have that for now.

You probably have seen this already, but I would suggest you use the example AI applications of the DK: STM32N6-AI - AI software ecosystem for STM32N6 with Neural-ART accelerator - STMicroelectronics

And the basic application example for the nucleo: 

STM32CubeN6 - STM32Cube MCU Package for STM32N6 series (HAL, CMSIS devices, and examples running on ST boards) - STMicroelectronics

(in STM32Cube_FW_N6_V1.1.0\Projects\NUCLEO-N657X0-Q)

Have a good day,

Julian