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On this page
  • Installing dependencies
  • Connecting to Edge Impulse
  • Next steps: building a machine learning model
  • Deploying back to device
  • Enabling and running example-standalone-inferencing-linux

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  1. Edge AI Hardware
  2. CPU

Microchip SAMA7G54

PreviousTexas Instruments SK-AM62NextRenesas RZ/G2L

Last updated 2 months ago

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The SAMA7G54 is a high-performance, Arm Cortex-A7 CPU-based embedded microprocessor (MPU) running up to 1 GHz. It supports multiple memories such as 16-bit DDR2, DDR3, DDR3L, LPDDR2, LPDDR3 with flexible boot options from octal/quad SPI, SD/eMMC as well as 8-bit SLC/MLC NAND Flash.

The SAMA7G54 integrates complete imaging and audio subsystems with 12-bit parallel and/or MIPI-CSI2 camera interfaces supporting up to 8 Mpixels and 720p @ 60 fps, up to four I2S, one SPDIF transmitter and receiver and a 4-stereo channel audio sample rate converter.

The device also features a large number of connectivity options including Dual Ethernet (one Gigabit Ethernet and one 10/100 Ethernet), six CAN-FD and three high-speed USB. Advanced security functions like secure boot, secure key storage, high-performance crypto accelerators for AES, SHA, RSA and ECC are also supported.

Microchip provides an optimized power management solution for the SAMA7G54. The MCP16502 has been fully tested and optimized to provide the best power vs. performance for the SAMA7G54.

Installing dependencies

1. Hardware Setup

Set to the default settings:

2. Software Setup

Use pre-built images:

OR

Use Docker

For Buildroot login with root user and edgeimpulse password, otherwise for Yocto login as root with no password.

If you are using Buildroot and would like to use SSH to connect to the board, some additional steps are necessary:

  1. cd /etc/ssh/

  2. nano sshd_config

  3. Uncomment and change PermitRootLogin prohibit-password to PermitRootLogin yes

  4. Uncomment PasswordAuthentication yes

  5. CTRL+X then Y then Enter

  6. reboot to restart SSH

  7. ifconfig to get IP address

  8. On your host machine ssh root@www.xxx.yyy.zzz

Connecting to Edge Impulse

With all software set up, connect your web-camera to your operating system and run:

edge-impulse-linux

This will start a wizard which will ask you to log in, and choose an Edge Impulse project. If you want to switch projects run the command with --clean.

Alternatively, you can access the project API Key as shown below by navigating to the Dashboard section on the left pane of your Studio project and select the Keys tab, then click the copy/paste icon next to the API Key to copy the entire text to your clipboard, then run:

edge-impulse-linux --api-key [paste your key here]

This --api-key flag also functions the same way with the edge-impulse-linux-runner command when deploying impulses onto devices.

Verifying that your device is connected

Next steps: building a machine learning model

With everything set up you can now build your first machine learning model with these tutorials:

Deploying back to device

To run your impulse locally run on your Linux platform:

edge-impulse-linux-runner

Another option is to download the .eim file directly from Studio, copy it to the device filesystem and run it with the --model-file argument. In this case chmod +x will be required to give the .eim executable permissions.

Enabling and running example-standalone-inferencing-linux

The main route for deploying en Edge Impulse project with SAMA7G54-EK Evaluation Kit is through using .eim. However it is also possible to build example-standalone-inferencing-linux package and run it on the device.

To do that run make menuconfig

Go to Target packages -> Miscellaneous and choose Example Standalone Inferencing Linux package. Paste the project deployment files (edge-impulse-sdk, model-parameters, tflite-model) into buildroot-microchip/buildroot-at91/package/example-standalone-inferencing-linux folder.

Proceed to building the image with make -j $((`nproc` - 1)) You will be able to find custom application file in /home on your target. Run it with ./custom features.txt, where features.txt is a file with raw features.

Note: When using the .eim method it's important to ensure the file has appropriate permissions, so use chmod to set these if needed.

Provide power to the board .

- This has edge-impulse-linux preinstalled

- Just run npm install -g edge-impulse-linux after logging in as root

Choose between or to build your own custom image by following the Readme instructions in the linked repositories and then use a tool like to flash the resulting .img or .wic file to an SD card.

The Microchip Developer Help portal has documentation for . Once your serial terminal is connected make sure the device has power and press the nStart button, you should see messages appearing over the serial console.

That's all! Your machine is now connected to Edge Impulse. To verify this, go to , and click Devices. The device will be listed here.

Looking to connect different sensors? Our lets you easily send data from any sensor and any programming language (with examples in Node.js, Python, Go and C++) into Edge Impulse.

This will automatically compile your model with full hardware acceleration, download the model to your local machine, and then start classifying. Our has examples on how to integrate the model with your favourite programming language.

as described in the Microchip documentation
Buildroot
Yocto
Buildroot
Yocto
BalenaEtcher
serial communications to the SAMA7G54-EK
your Edge Impulse project
Image classification
Object detection
Object detection with centroids (FOMO)
Linux SDK
Linux SDK
these jumpers
jumpers
edge-impulse-linux
edge-impulse-linux
Device connected to Edge Impulse