Embedded Rust Basics.

We will now create the iconic blinky.

Let’s access the project with cd exercises/blinky. We will need to edit the file main.rs.

On esp32-c6 board there is no regular LED connected, instead there is an addressable LED which works differently and is beyond the scope of this book.

Instead, we will use a regular LED and a resistor, and build a circuit controlled with the GPIO pin headers.

esp32-c6, wiring the LED

Wire up the board as shown on the previous image:

1. Start wiring from GND pin header (red wire),

2. From there to the resistor (220mΩ or otherwise, without it the LED blows up.)

3. From the other leg of the resistor to the LED (blue wire),

4. Finally, the LED connects to GPIO7 (the long LED-leg is on GPIO7.)

Exercise

1. Create OutputConfig with default configuration.
   • Hint: it implements Default.
2. Toggle the led with 3500ms delay.

The exercises/blinky/examples/blinky.rs contains a solution.

You can run it with the following command cargo run --example blinky --release.