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GitHub - shanemmattner/ESP32-C3_Rust_Tutorials

Various embedded Rust tutorials using the ESP32-C3. We'll work towards making a remote data logger by first implementing peripherals we will need to build the larger project.

Each tutorial below has a YouTube video link where I will start with a blank project and implement a peripherals using the latest esp-idf-hal version.

• Tutorials: Source code for the YouTube tutorials
• WIP: Half-baked crates that may have some useful code in the future
• docs: Various datasheets, books, and technical manuals
• submodules: All of the submodules for this repository.
  • referecnce projects: A huge collection of embedded Rust projects that I copy code from
• Data-Logger-PCB: KiCAD hardware designs for ESP32-C3 data logger PCB

Minimum viable product project where we'll implement all the peripherals and features we need for the data logger

• 4 ADC's
• 16 Digital I/O
• DHT11
• SD card logging
• UART CLI Shell

• p0-output: Make the "Hellow World" of embedded systems: a Blinky application to periodically turn an LED on and off
• p1-input: Add a button to turn the blinking logic on and off
• p2-threads: Move the button logic and LED logic to their own thread and pass messages between threads with crossbeams channel
• p3-adc: Read an analog-to-digital converter channel and print out the value
• p4-dht11: Read a DHT11 for temperature and humidity data
• p5-i2c: Configure and use a SX1509 GPIO Expander through I2C
• p6-spi: Write a string to a uSD card over SPI using embedded-sdmmc crate
• p7-uart: Receiver characters from the UART and send them back when we detect a carriage return

• p8-cli-shell: Create a simple CLI shell to interact with the ESP32-C3 over UART
• p9-adc-stream: Configure ADC's to continuously read and make that data available to other parts of the application through a mutex
• p10-log-values: Log all the values read from the ADC's
• p11-digital-stream: Continuously read the SX1509 inputs and log to SD card

For the next part of the project we will add in features listed below:

• Debugging
• Logging
• FSM/HSM
• Wifi
• MQTT
• OTA
• Pub/sub
• Crash dumps & diagnostics

Other features I'd like to add but don't have a clear example for yet:

• DMA
• Timer usage

1. Install Rust and associated build tools
2. Start a project using the esp-idf-template from the private repo home dir. I chose all the default options

# STD Project
cargo generate https://github.com/esp-rs/esp-idf-template cargo
# NO-STD (Bare-metal) Project
cargo generate https://github.com/esp-rs/esp-template

1. Build the Hello World program by running cargo build in the new project dir. This will take a while to build the first time:

cd esp32-rust
cargo build
...
Finished dev [optimized + debuginfo] target(s) in 6m 40s

1. Flash the ESP32 with the build artifact:

espflash /dev/ttyACM0 target/riscv32imc-esp-espidf/debug/project

1. Connect to ESP32 and monitor

Singletons in Embedded Rust

Pull in code for submodules with:

git submodule update --init --recursive

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