Embedded Rust Basics.

Using same wiring from the blinky chapter, let’s now use external input to make the LED blink.

• Access exercises/handle_input in order to edit main.rs.

Exercise

We will use the button labelled BOOT linked to GPIO9 to toggle the LED.

1. Initialise the peripherals with default config (check previous exercises)
2. Set the led variable to Output::new passing GPIO7 peripheral, Level::High and default OutputConfig.
3. Set the btn variable to Input::new passing GPIO9 peripheral, default InputConfig but overwrite with as_pull(Pull::High).
4. Add the logic inside loop
   • When pressing it should turn the led on, and delay it 2 seconds
   • Then it turns itself off.

The exercises/handle_input/examples/handle_input.rs contains a solution. You can run it with the following command cargo run --example handle_input --release.