The TensorFlow Lite for Microcontrollers C++ library is part of the TensorFlow repository. It is designed to be readable, easy to modify, well-tested, easy to integrate, and compatible with regular TensorFlow Lite.
The following document will outline the basic structure of the C++ library, provide the commands required for compilation, and give an overview of how to port to new devices.
The README.md contains more in-depth information on all of these topics.
root directory has a relatively simple structure. However, since it is located
inside of the extensive TensorFlow repository, we have created scripts and
pre-generated project files that provide the relevant source files in isolation
within various embedded development environments such as Arduino, Keil, Make,
The most important files for using the TensorFlow Lite for Microcontrollers interpreter are located in the root of the project, accompanied by tests:
all_ops_resolver.hprovides the operations used by the interpreter to run the model.
micro_error_reporter.houtputs debug information.
micro_interpreter.hcontains code to handle and run models.
See Get started with microcontrollers for a walkthrough of typical usage.
The build system provides for platform-specific implementations of certain
files. These are located in a directory with the platform name, for example
Several other directories exist, including:
kernel, which contains operation implementations and the associated code.
tools, which contains build tools and their output.
examples, which contains sample code.
Generate project files
Makefile is able to generate standalone projects containing all
necessary source files that can be imported into embedded development
environments. The current supported environments are Arduino, Keil, Make, and
To generate these projects with Make, use the following command:
make -f tensorflow/lite/experimental/micro/tools/make/Makefile generate_projects
This will take a few minutes, since it has to download some large toolchains for
the dependencies. Once it has finished, you should see some folders created
inside a path like
tensorflow/lite/experimental/micro/tools/make/gen/linux_x86_64/prj/ (the exact
path depends on your host operating system). These folders contain the generated
project and source files. For example,
contains the Keil uVision targets.
Build the library
If you are using a generated project, see its included README for build instructions.
To build the library and run tests from the main TensorFlow repository, run the following commands:
Clone the TensorFlow repository from GitHub to a convenient place.
git clone --depth 1 https://github.com/tensorflow/tensorflow.git
Enter the directory that was created in the previous step.
Makefileto build the project and run tests. Note that this will download all required dependencies:
make -f tensorflow/lite/experimental/micro/tools/make/Makefile test
Port to new devices
Guidance on porting TensorFlow Lite for Microcontrollers to new platforms and devices can be found in README.md.