EloquentTinyML

This Arduino library is here to simplify the deployment of Tensorflow Lite for Microcontrollers models to Arduino boards using the Arduino IDE.

The library exposes an eloquent interface to load a model and run inferences.

Install

Install the latest version (>=3.0.0) from the Arduino IDE Library Manager.

You will also need tflm_esp32 or tflm_cortexm, depending on your board.

Use

/**
 * Run a TensorFlow model to predict the IRIS dataset
 * For a complete guide, visit
 * https://eloquentarduino.com/tensorflow-lite-esp32
 */
// replace with your own model
// include BEFORE <eloquent_tinyml.h>!
#include "irisModel.h"
// include the runtime specific for your board
// either tflm_esp32 or tflm_cortexm
#include <tflm_esp32.h>
// now you can include the eloquent tinyml wrapper
#include <eloquent_tinyml.h>

// this is trial-and-error process
// when developing a new model, start with a high value
// (e.g. 10000), then decrease until the model stops
// working as expected
#define ARENA_SIZE 2000

Eloquent::TF::Sequential<TF_NUM_OPS, ARENA_SIZE> tf;

/**
 * 
 */
void setup() {
    Serial.begin(115200);
    delay(3000);
    Serial.println("__TENSORFLOW IRIS__");
    
    // configure input/output
    // (not mandatory if you generated the .h model
    // using the everywhereml Python package)
    tf.setNumInputs(4);
    tf.setNumOutputs(3);
    // add required ops
    // (not mandatory if you generated the .h model
    // using the everywhereml Python package)
    tf.resolver.AddFullyConnected();
    tf.resolver.AddSoftmax();
    
    while (!tf.begin(irisModel).isOk())
        Serial.println(tf.exception.toString());
}


void loop() {
    // x0, x1, x2 are defined in the irisModel.h file
    // https://github.com/eloquentarduino/EloquentTinyML/tree/main/examples/IrisExample/irisModel.h
    
    // classify sample from class 0
    if (!tf.predict(x0).isOk()) {
        Serial.println(tf.exception.toString());
        return;
    }
    
    Serial.print("expcted class 0, predicted class ");
    Serial.println(tf.classification);
    
    // classify sample from class 1
    if (!tf.predict(x1).isOk()) {
        Serial.println(tf.exception.toString());
        return;
    }
    
    Serial.print("expcted class 1, predicted class ");
    Serial.println(tf.classification);
    
    // classify sample from class 2
    if (!tf.predict(x2).isOk()) {
        Serial.println(tf.exception.toString());
        return;
    }
    
    Serial.print("expcted class 2, predicted class ");
    Serial.println(tf.classification);
    
    // how long does it take to run a single prediction?
    Serial.print("It takes ");
    Serial.print(tf.benchmark.microseconds());
    Serial.println("us for a single prediction");
    
    delay(1000);
}

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