1 files changed, 40 insertions, 0 deletions

diff --git a/examples/rp235x/src/bin/gpio_async.rs b/examples/rp235x/src/bin/gpio_async.rs
new file mode 100644
index 000000000..b79fb2a15
--- /dev/null
+++ b/examples/rp235x/src/bin/gpio_async.rs
@@ -0,0 +1,40 @@
+//! This example shows how async gpio can be used with a RP2040.
+//!
+//! The LED on the RP Pico W board is connected differently. See wifi_blinky.rs.
+
+#![no_std]
+#![no_main]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_rp::gpio;
+use embassy_time::Timer;
+use gpio::{Input, Level, Output, Pull};
+use {defmt_rtt as _, panic_probe as _};
+
+/// It requires an external signal to be manually triggered on PIN 16. For
+/// example, this could be accomplished using an external power source with a
+/// button so that it is possible to toggle the signal from low to high.
+///
+/// This example will begin with turning on the LED on the board and wait for a
+/// high signal on PIN 16. Once the high event/signal occurs the program will
+/// continue and turn off the LED, and then wait for 2 seconds before completing
+/// the loop and starting over again.
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let p = embassy_rp::init(Default::default());
+    let mut led = Output::new(p.PIN_25, Level::Low);
+    let mut async_input = Input::new(p.PIN_16, Pull::None);
+
+    loop {
+        info!("wait_for_high. Turn on LED");
+        led.set_high();
+
+        async_input.wait_for_high().await;
+
+        info!("done wait_for_high. Turn off LED");
+        led.set_low();
+
+        Timer::after_secs(2).await;
+    }
+}