Add GPIOTE async hal.

examples/src/bin/gpiote.rs

@@ -0,0 +1,84 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+#[path = "../example_common.rs"]
+mod example_common;
+use example_common::*;
+
+use core::pin::Pin;
+use cortex_m_rt::entry;
+use embassy::io::{AsyncBufRead, AsyncBufReadExt, AsyncWrite, AsyncWriteExt};
+use embassy_nrf::gpiote;
+use futures::pin_mut;
+use nrf52840_hal::gpio;
+
+#[static_executor::task]
+async fn run() {
+    let p = embassy_nrf::pac::Peripherals::take().dewrap();
+    let port0 = gpio::p0::Parts::new(p.P0);
+
+    let g = gpiote::Gpiote::new(p.GPIOTE);
+
+    info!("Starting!");
+
+    let pin1 = port0.p0_11.into_pullup_input().degrade();
+    let button1 = async {
+        let ch = g
+            .new_input_channel(pin1, gpiote::EventPolarity::HiToLo)
+            .dewrap();
+
+        loop {
+            ch.wait().await;
+            info!("Button 1 pressed")
+        }
+    };
+
+    let pin2 = port0.p0_12.into_pullup_input().degrade();
+    let button2 = async {
+        let ch = g
+            .new_input_channel(pin2, gpiote::EventPolarity::LoToHi)
+            .dewrap();
+
+        loop {
+            ch.wait().await;
+            info!("Button 2 released")
+        }
+    };
+
+    let pin3 = port0.p0_24.into_pullup_input().degrade();
+    let button3 = async {
+        let ch = g
+            .new_input_channel(pin3, gpiote::EventPolarity::Toggle)
+            .dewrap();
+
+        loop {
+            ch.wait().await;
+            info!("Button 3 toggled")
+        }
+    };
+
+    let pin4 = port0.p0_25.into_pullup_input().degrade();
+    let button4 = async {
+        let ch = g
+            .new_input_channel(pin4, gpiote::EventPolarity::Toggle)
+            .dewrap();
+
+        loop {
+            ch.wait().await;
+            info!("Button 4 toggled")
+        }
+    };
+
+    futures::join!(button1, button2, button3, button4);
+}
+
+#[entry]
+fn main() -> ! {
+    info!("Hello World!");
+
+    unsafe {
+        run.spawn().dewrap();
+        static_executor::run();
+    }
+}