Move examples to a subdirectory

examples/std/src/bin/net.rs

@@ -0,0 +1,103 @@
+#![feature(type_alias_impl_trait)]
+#![feature(min_type_alias_impl_trait)]
+#![feature(impl_trait_in_bindings)]
+#![allow(incomplete_features)]
+
+use clap::{AppSettings, Clap};
+use embassy::executor::Spawner;
+use embassy::io::AsyncWriteExt;
+use embassy::util::Forever;
+use embassy_net::*;
+use embassy_std::Executor;
+use heapless::Vec;
+use log::*;
+
+#[path = "../tuntap.rs"]
+mod tuntap;
+
+use crate::tuntap::TunTapDevice;
+
+static DEVICE: Forever<TunTapDevice> = Forever::new();
+static CONFIG: Forever<DhcpConfigurator> = Forever::new();
+
+#[derive(Clap)]
+#[clap(version = "1.0")]
+#[clap(setting = AppSettings::ColoredHelp)]
+struct Opts {
+    /// TAP device name
+    #[clap(long, default_value = "tap0")]
+    tap: String,
+}
+
+#[embassy::task]
+async fn net_task() {
+    embassy_net::run().await
+}
+
+#[embassy::task]
+async fn main_task(spawner: Spawner) {
+    let opts: Opts = Opts::parse();
+
+    // Init network device
+    let device = TunTapDevice::new(&opts.tap).unwrap();
+
+    // Static IP configuration
+    let config = StaticConfigurator::new(Config {
+        address: Ipv4Cidr::new(Ipv4Address::new(192, 168, 69, 2), 24),
+        dns_servers: Vec::new(),
+        gateway: Some(Ipv4Address::new(192, 168, 69, 1)),
+    });
+
+    // DHCP configruation
+    let config = DhcpConfigurator::new();
+
+    // Init network stack
+    embassy_net::init(DEVICE.put(device), CONFIG.put(config));
+
+    // Launch network task
+    spawner.spawn(net_task()).unwrap();
+
+    // Then we can use it!
+    let mut rx_buffer = [0; 4096];
+    let mut tx_buffer = [0; 4096];
+    let mut socket = TcpSocket::new(&mut rx_buffer, &mut tx_buffer);
+
+    socket.set_timeout(Some(embassy_net::SmolDuration::from_secs(10)));
+
+    let remote_endpoint = (Ipv4Address::new(192, 168, 69, 74), 8000);
+    info!("connecting to {:?}...", remote_endpoint);
+    let r = socket.connect(remote_endpoint).await;
+    if let Err(e) = r {
+        warn!("connect error: {:?}", e);
+        return;
+    }
+    info!("connected!");
+    loop {
+        let r = socket.write_all(b"Hello!\n").await;
+        if let Err(e) = r {
+            warn!("write error: {:?}", e);
+            return;
+        }
+    }
+}
+
+#[no_mangle]
+fn _embassy_rand(buf: &mut [u8]) {
+    use rand_core::{OsRng, RngCore};
+    OsRng.fill_bytes(buf);
+}
+
+static EXECUTOR: Forever<Executor> = Forever::new();
+
+fn main() {
+    env_logger::builder()
+        .filter_level(log::LevelFilter::Debug)
+        .filter_module("async_io", log::LevelFilter::Info)
+        .format_timestamp_nanos()
+        .init();
+
+    let executor = EXECUTOR.put(Executor::new());
+    executor.run(|spawner| {
+        spawner.spawn(main_task(spawner)).unwrap();
+    });
+}