/* * b01_makerML_hello_world.ino * simplifying TensorflowLite Micro Machine Learning for all makers * * * * By Jeremy Ellis * Twitter @rocksetta * Website https://rocksetta.com * created Aug 20th, 2020 * Github https://github.com/hpssjellis/my-examples-for-the-arduino-portentaH7/tree/master/m09-Tensoflow * * * Hashtags * #TensorflowLiteMicro * #TensorflowLiteForArduino * #TinyMY * #MakerML */ // By putting this model.h file here we can load everything as one file into the arduino IDE. // Once it is working it is best to seperate this as a model.h file into it's own tabThis allows only one file for Arduino IDE, but you should seperate the following // #include "model.h" // uncomment when below has been put into it's own tab /////////////////////////////////// cut and paste to model.h tab ///////////////////////////////////////////////////////////////// #pragma once const unsigned char model_tflite[] = { 0x18, 0x00, 0x00, 0x00, 0x54, 0x46, 0x4c, 0x33, 0x00, 0x00, 0x0e, 0x00, 0x18, 0x00, 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"Arduino.h" //#include #include /*================= Start Advanced Area ===============================*/ #include "tensorflow/lite/micro/all_ops_resolver.h" //#include "tensorflow/lite/micro/kernels/micro_ops.h" //#include "tensorflow/lite/micro/micro_mutable_op_resolver.h" #include "tensorflow/lite/micro/micro_error_reporter.h" // may have issues on M4 core #include "tensorflow/lite/micro/micro_interpreter.h" #include "tensorflow/lite/schema/schema_generated.h" #include "tensorflow/lite/version.h" #include "tensorflow/lite/c/common.h" //#include "tensorflow/lite/c/c_api.h" // has interesting funcitons, not in main library // Start Debug.cc information ---------------------------------------------------------- #if defined (CORE_CM7) || defined (CORE_CM4) || defined (TEENSYDUINO) || defined (ARDUINO_NANO33BLE) || defined (YOUR_BOARD1) // CORE_CM7 is for the PortentaH7 outer core // do abosolutely nothing the default works // Note: NANO_33_BLE deprecated as MBED of 1.30, new name: ARDUINO_NANO33BLE // Note: CORE_CM4 MBED of 1.30, moved above #elif defined (NANO_33_BLE) || defined (YOUR_BOARD2) // CORE_CM4 is for the PortentaH7 inner core #define DEBUG_SERIAL_OBJECT (Serial) extern "C" void DebugLog(const char* s) { static bool is_initialized = false; if (!is_initialized) { DEBUG_SERIAL_OBJECT.begin(9600); is_initialized = true; } DEBUG_SERIAL_OBJECT.print(s); } #elif defined (__SAM3X8E__) || defined (YOUR_BOARD3) // Arduino UNO style boards #define DEBUG_SERIAL_OBJECT (SerialUSB) extern "C" void DebugLog(const char* s) { static bool is_initialized = false; if (!is_initialized) { DEBUG_SERIAL_OBJECT.begin(9600); is_initialized = true; } DEBUG_SERIAL_OBJECT.print(s); } #elif defined (SEEED_XIAO_M0) || defined (YOUR_BOARD4) // The new $5 USD Seeeduino XIAO board #define CFG_TUSB_DEBUG #else // don't do any debugging until you figure out your board extern "C" void DebugLog(const char* s) { // Do not log debug info } #endif /* * nano_33_iot.build.board=SAMD_NANO_33_IOT // have not got it working yet * */ // End Debug.cc information ---------------------------------------------------------- namespace { // Start namespace---------------------------------------------------------- // define needed variables tflite::ErrorReporter* error_reporter = nullptr; const tflite::Model* model = nullptr; tflite::MicroInterpreter* interpreter = nullptr; TfLiteTensor* input = nullptr; TfLiteTensor* output = nullptr; // Create an area of memory to use for input, output, and intermediate arrays. constexpr int kTensorArenaSize = 2 * 1024; // I like 20 * 1024; uint8_t tensor_arena[kTensorArenaSize]; } // END namespace---------------------------------------------------------- /*================= End Advanced Area ===============================*/ /*================= Start Smart Area ================================*/ void modelSetup(const unsigned char theModel[]){ // NOLINTNEXTLINE(runtime-global-variables) static tflite::MicroErrorReporter micro_error_reporter; error_reporter = µ_error_reporter; // Map the model into a usable data structure. This doesn't involve any // copying or parsing, it's a very lightweight operation. model = tflite::GetModel(theModel); // name from the tflite converter model.h file if (model->version() != TFLITE_SCHEMA_VERSION) { TF_LITE_REPORT_ERROR(error_reporter, "Model provided is schema version %d not equal " "to supported version %d.", model->version(), TFLITE_SCHEMA_VERSION); return; } // This pulls in all the operation implementations we need. // NOLINTNEXTLINE(runtime-global-variables) static tflite::AllOpsResolver resolver; /* // replace the above line if you know each operation to save space static tflite::MicroMutableOpResolver<5> micro_op_resolver; // NOLINT micro_op_resolver.AddBuiltin(tflite::BuiltinOperator_DEPTHWISE_CONV_2D,tflite::ops::micro::Register_DEPTHWISE_CONV_2D() ); micro_op_resolver.AddBuiltin(tflite::BuiltinOperator_MAX_POOL_2D,tflite::ops::micro::Register_MAX_POOL_2D() ); micro_op_resolver.AddBuiltin(tflite::BuiltinOperator_CONV_2D,tflite::ops::micro::Register_CONV_2D() ); micro_op_resolver.AddBuiltin(tflite::BuiltinOperator_FULLY_CONNECTED,tflite::ops::micro::Register_FULLY_CONNECTED() ); micro_op_resolver.AddBuiltin(tflite::BuiltinOperator_SOFTMAX,tflite::ops::micro::Register_SOFTMAX() ); * */ // Build an interpreter to run the model with. static tflite::MicroInterpreter static_interpreter(model, resolver, tensor_arena, kTensorArenaSize, error_reporter); interpreter = &static_interpreter; // Allocate memory from the tensor_arena for the model's tensors. TfLiteStatus allocate_status = interpreter->AllocateTensors(); if (allocate_status != kTfLiteOk) { TF_LITE_REPORT_ERROR(error_reporter, "AllocateTensors() failed"); return; } // Obtain pointers to the model's input and output tensors. input = interpreter->input(0); output = interpreter->output(0); } float modelPredict(float myInput){ // like tensorflowJS const myPredictArray = await model.predict(xTrainingData).data() input->data.f[0] = myInput; // may have to edit this // Run inference, and report any error TfLiteStatus invoke_status = interpreter->Invoke(); // if (invoke_status != kTfLiteOk) { // Serial.print("Error with input: " + String(myInput)); // } return output->data.f[0]; // may have to edit this } /*================= End Smart Area ======================================*/ /*================= Start Maker Area ======================================*/ int myCounter = 0; int myLed = LED_BUILTIN; //or 7 or 5 or LED_BUILTIN or LEDB void setup() { Serial.begin(9600); pinMode(myLed, OUTPUT); modelSetup(model_tflite); // name of the model in the tab model.h } void loop() { myCounter +=1; if (myCounter >= 360){ myCounter = 0; } float x_val = myCounter * 3.14/180; // degrees to radians float y_val = sin(x_val); // This uses your model to make a prediction float predicted = modelPredict(x_val); Serial.println("sin(" +String(x_val)+ ") = " + String(y_val) + "\t predicted: " + String(predicted) ); // y=1 LED is fully on. The LED's brightness can range from 0-255. int brightness = (int)(127.5f * (predicted+1)); #if defined (CORE_CM7) || defined (CORE_CM4) if (brightness <= 128){ digitalWrite(myLed, HIGH); // means off } else { digitalWrite(myLed, LOW); // means on } #else analogWrite(myLed, brightness); // not on Porttenta #endif delay(3); // slows the process down a bit to see the sine wave } /*================= End Maker Area ======================================*/