FP-AI-VISION1 compile issue

[cvd_pony]

Hi ST professional team

Following the documentation  instructions & opterating

How to use Teachable Machine to create an image classification application on STM32

https://wiki.stmicroelectronics.cn/stm32mcu/wiki/AI:How_to_use_Teachable_Machine_to_create_an_image_classification_application_on_STM32

How to resolve compilation error messages：

[Imen.D · Accepted solution]

Hello @cvd_pony and welcome to the STM32 Community :) 

Check your builder settings.

Make sure to configure your project properly and build the workspace in the right path.

[cvd_pony]

I'll try it, thank you

[Nicolas_V]

I did the Wiki again on my side and did not face any issue.

For your case and would verify two steps :

Delete the following files and replace them with the ones from workspace/stm32ai_output:

In Src:

• network.c
• network_data.c
• network_data_params.c (for X-CUBE-AI v7.2 and above)

In Inc:

• network.h
• network_data.h
• network_config.h
• network_data_params.h (for X-CUBE-AI v7.2 and above)

Updating to a newer version of X-CUBE-AI↑

FP-AI-VISION1 v3.1.0 is based on X-Cube-AI version 7.1.0, You can check your version of Cube.AI by running stm32ai --version. If the c-model files were generated with a newer version of X-Cube-AI (> 7.1.0), you need also to update the X-CUBE-AI library (NetworkRuntime720_CM7_GCC.a for X-CUBE-AI version 7.2).

Go to workspace/FP-AI-VISION1_V3.1.0/Middlewares/ST/STM32_AI_Runtime then for a Windows command prompt:

copy %X_CUBE_AI_DIR%\Middlewares\ST\AI\Inc\*  .\Inc\
 copy %X_CUBE_AI_DIR%\Middlewares\ST\AI\Lib\GCC\ARMCortexM7\NetworkRuntime720_CM7_GCC.a .\lib\NetworkRuntime710_CM7_GCC.a

[magnus_lindhe]

Hi,

I had a similar problem when following the tutorial above, as well as this one:

How to use transfer learning to perform image classification on STM32

Specifically, I got a linker error saying that some function related to NT35510 could not be found (some file names are removed):

undefined reference to `NT35510_RegisterBusIO'
undefined reference to `NT35510_ReadID'
in function `BSP_LCD_InitEx':
undefined reference to `NT35510_LCD_Driver'
collect2.exe: error: ld returned 1 exit status

I had followed the instructions in step 3.3 of the tutorial above (same as step 3.1.4 in the tutorial you mentioned) and moved the two files nt35510.c and nt35510_reg.c to the folder workspace/FP-AI-VISION1_V3.1.0/Drivers/BSP/Components, but the linker still didn't find them.

Solution: After a few hours of googling and trial and error, I realized that much of the project file tree is mirrored as a sub-tree of the STM32 project in the STM32Cube IDE file tree, and that I needed to drag and drop the two C-files into the sub-folder Components of the project tree. The image below shows the incorrect folder in red and the correct one in green:

I held the Ctrl key while dragging and dropping the files, to do a copy. I then got a dialog asking if I wanted to copy or link the files, and I selected linking. This seemed to update the build system so the files were included in the compilation, and solved the linking problem.

I think this should be updated in the instructions of both tutorials.

Hope it helps someone else!

[Nicolas_V]

Thank you Magnus,

you are right. This is the correct way of doing it.

I am reworking the wiki, to make it easier. Stay tune !

With Kind Regards,

Nicolas,