Embedding Tensorflow Model In Firmware - Could Not Find File

OpenMV Boards
1

I have built a custom model that loads and runs from the SD card. Now looking to embed the model into the firmware. I have followed these two posts, and placed my model “blob_classify” and label files into openmv/src/lib/tflm/models, then build the firmware.

I load the firmware with this path:
\wsl.localhost\Ubuntu\home\username\openmv\src\build\bin\firmware.bin

After loading the firmware I get the error “Could not find the file”.

When I change to model filename to “fomo_face_detection”, the model loads.

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2

Hi, can you provide your model and labels? I just tried this feature out by adding a renamed second copy of fomo to the nicla firmware and there were no issues.

3

I’m building the firmware for RT1062. In OpenMV IDE the board is “OpenMV Cam RT1062 Legacy”.

Build using this:
make -j$(nproc) TARGET=OPENMV_RT1060 -C src

4

Figured it out. After adding the .tflite and .txt files to /model folder, need to force make to rebuild with -B switch

make -j$(nproc) -C src/micropython/mpy-cross -B

5

Great!

6

Hi @ajacobs,

I’m encountering the [same issue] (Error loading embedded model) you described regarding loading an embedded model in OpenMV. I was wondering if you could share more details about how you executed your model and the steps you followed.
Thank you.

7

It may be a memory issue. Try removing all other models from the folder.

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