Welcome to the Simplified Embedded Rust: ESP Core Library Edition book repository. Here you will find all the book related resources. You can get a copy of the book here.
If you find any text errors, typos, or formatting issues in the book, please report a text error here so that it can be addressed in a later revision.
If you find any code issues in the book, please report a bug here so that it can be addressed in a later revision.
You are also welcome to suggest a feature here so it may be considered for content in the future.
This is a list of the project links containing the example source code for the different ESP devkits. All projects were setup using VS Code as an editor. Each branch contains the same collection of code examples accomodated for the different ESP devkits supported by Wokwi. Click on the link for the device you desire to work with and clone that particular branch.
| Device | Devkit | GitHub Links |
|---|---|---|
| ESP32-C3 | ESP32-C3-DevKitM-1 | ESP32-C3-DevKitM-1 Branch |
| ESP32-C3 | ESP32-C3-DevKit-RUST-1 | ESP32-C3-DevKit-RUST-1 Branch |
| ESP32-S2 | ESP32-S2-DevKitM-1 | ESP32-S2-DevKitM-1 Branch |
| ESP32-S3 | ESP32-S3-DevKitC-1 | ESP32-S3-DevKitC-1 Branch |
| ESP32 | ESP32-Dev-KitC | ESP32-DevKitC Branch |
This is a list of links to the Wokwi examples presented in each chapter. These are based on the ESP32-C3 device and would need to be rewired for other devices. The Wokwi setup for the different devices can be also extracted from the VSCode projects. If you notice a template missing or would like to request one, feel free to submit a feature request.
| Chapter | Example Link |
|---|---|
| CH 5 - GPIO | Blinky Button Controlled Blinking Button Press Counter |
| CH 6 - ADC | Simple Voltmeter Temperature Sensing |
| CH 7 - Timers & Counters | Timer Based Delay Real-Time Timer |
| CH 8 - PWM | LED Fading |
| CH 9 - Serial Communication | Console Printing Interacting with an I2C RTC |
| CH 10 - The Embassy Framework | Blinky Real-time Timer LED Cycling UART Echo |
These are pre-wired templates to get you started with end of chapter questions. Questions that are not included would use exisiting book examples as templates. These are based on the ESP32-C3 device and would need to be rewired for other devices. If you notice a template missing or would like to request one, feel free to submit a feature request.
| Chapter | Question Links |
|---|---|
| CH 5 - GPIO | Q5 Q6 Q7 & Q8 |
| CH 6 - ADC | Q4 Q5 Q6 & Q7 |
| CH 7 - Timers & Counters | Q1 |
| CH 8 - PWM | Q4 Q5 Q6 Q7 |
| CH 9 - Serial Communication | 🤷♂️ |
| CH 10 - The Embassy Framework | Q6 |
This is the recommended option for beginners as it is the quickest and easiest way to get started. Each code example has a corresponding project on Wokwi, allowing you to run and modify the code directly from your web browser. Links to the examples are provided in the earlier section.
If you prefer to work with physical hardware, Wokwi provides an approach to flash an external development board/device directly from the web interface. To do that you need to press F1 in the Wokwi code window to access the command palette. Afterward, you can select the "Flash Firmware to Device" option.
If you prefer to develop locally with physical hardware, you can clone the examples locally and set them up to run on an external development board. The software required entails installing the nightly toolchain with the rust src component, modifying the target for cross-compiling in addition to installing flashing tools to download code to the external hardware. This includes the following
If you do not have Rust installed already, follow the instructions on the rustup website.
Run the following command in a terminal window:
rustup toolchain install nightly --component rust-srcRun the following command in a terminal window:
rustup target add riscv32imc -unknown -none -elfRun the following command in a terminal window:
cargo install espflashAfterward, the easiest way to flash an ELF binary, is to add espflash as your Cargo runner. This way, when enterning cargo run, the code would automaitcally perform the flashing after file generation. This is done by adding the following line to your .cargo/config.toml file:
[target.'cfg(any(target_arch = "riscv32", target_arch = "xtensa"))']
runner = "espflash flash --monitor"When creating your own projects from scratch, it is highly recommended that you use cargo-generate. Through cargo-generate you can create new project templates pre-configured for any ESP device. Click on the link below for instructions to install and use cargo-generate.
To install cargo-generate run the following command:
cargo install cargo-generateAfterward, to generate a no-std template run the following command:
cargo generate esp-rs/esp-templateIf you prefer to develop locally with Wowki (no hardware), you can clone the examples locally and install the following extensions for the simulator:
Afterward, you need to also configure your project for Wokwi using these instructions.
cargo-generate you can generate projects pre-configured for Wokwi skipping the second part after extension installation.
Options 2, 3, and 4 are not recommended for beginners due to the added complexity and, in some cases, required installations.
This is a list of the components used in the different examples in the book. Acquiring these components is OPTIONAL and recommended only after you are comfortable with the material. You will only need these components if you are interested in doing physical hardware development at a later time (options 2 and 3 listed in the development options section earlier).
| Component | Documenation | Purchase Links |
|---|---|---|
| Development Board (Choose one) | ESP32-C3-DevKitM-1 ESP32-C3-DevKit-RUST-1 |
ESP32-C3-DevKitM-1 (AliExpress) ESP32-C3-DevKit-RUST-1 (AliExpress) |
| Female to Male Wires | N/A | AliExpress |
| Prototyping Breadboard | N/A | AliExpress |
| LEDs | Datasheet | AliExpress |
| LED Bar | Datasheet | AliExpress |
| Push Button | Datasheet | AliExpress |
| Potentiometer | Datasheet | AliExpress |
| NTC Temperature Sensor | Datasheet | AliExpress |
| DS1307 | Datasheet | AliExpress |