133 lines
3.5 KiB
Rust
133 lines
3.5 KiB
Rust
#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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use cortex_m_rt::entry;
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use defmt::*;
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use embassy::executor::{Executor, Spawner};
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use embassy::io::AsyncWriteExt;
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use embassy::time::{Duration, Timer};
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use embassy::util::Forever;
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use embassy_net::{
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Config as NetConfig, Ipv4Address, Ipv4Cidr, StackResources, StaticConfigurator, TcpSocket,
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};
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use embassy_stm32::eth::lan8742a::LAN8742A;
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use embassy_stm32::eth::{Ethernet, State};
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use embassy_stm32::interrupt;
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use embassy_stm32::peripherals::ETH;
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use embassy_stm32::peripherals::RNG;
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use embassy_stm32::rng::Rng;
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use embassy_stm32::time::U32Ext;
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use embassy_stm32::Config;
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use heapless::Vec;
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use defmt_rtt as _; // global logger
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use panic_probe as _;
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#[embassy::task]
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async fn main_task(
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device: &'static mut Ethernet<'static, ETH, LAN8742A, 4, 4>,
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config: &'static mut StaticConfigurator,
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spawner: Spawner,
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) {
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let net_resources = NET_RESOURCES.put(StackResources::new());
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// Init network stack
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embassy_net::init(device, config, net_resources);
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// Launch network task
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unwrap!(spawner.spawn(net_task()));
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info!("Network task initialized");
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// Then we can use it!
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let mut rx_buffer = [0; 1024];
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let mut tx_buffer = [0; 1024];
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let mut socket = TcpSocket::new(&mut rx_buffer, &mut tx_buffer);
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socket.set_timeout(Some(embassy_net::SmolDuration::from_secs(10)));
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let remote_endpoint = (Ipv4Address::new(192, 168, 0, 10), 8000);
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let r = socket.connect(remote_endpoint).await;
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if let Err(e) = r {
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info!("connect error: {:?}", e);
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return;
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}
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info!("connected!");
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loop {
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let r = socket.write_all(b"Hello\n").await;
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if let Err(e) = r {
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info!("write error: {:?}", e);
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return;
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}
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Timer::after(Duration::from_secs(1)).await;
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}
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}
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#[embassy::task]
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async fn net_task() {
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embassy_net::run().await
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}
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#[no_mangle]
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fn _embassy_rand(buf: &mut [u8]) {
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use rand_core::RngCore;
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critical_section::with(|_| unsafe {
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unwrap!(RNG_INST.as_mut()).fill_bytes(buf);
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});
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}
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static mut RNG_INST: Option<Rng<RNG>> = None;
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static EXECUTOR: Forever<Executor> = Forever::new();
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static STATE: Forever<State<'static, ETH, 4, 4>> = Forever::new();
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static ETH: Forever<Ethernet<'static, ETH, LAN8742A, 4, 4>> = Forever::new();
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static CONFIG: Forever<StaticConfigurator> = Forever::new();
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static NET_RESOURCES: Forever<StackResources<1, 2, 8>> = Forever::new();
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fn config() -> Config {
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let mut config = Config::default();
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config.rcc.sys_ck = Some(200.mhz().into());
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config
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}
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#[entry]
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fn main() -> ! {
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info!("Hello World!");
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info!("Setup RCC...");
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let p = embassy_stm32::init(config());
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let rng = Rng::new(p.RNG);
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unsafe {
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RNG_INST.replace(rng);
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}
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let eth_int = interrupt::take!(ETH);
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let mac_addr = [0x00, 0x00, 0xDE, 0xAD, 0xBE, 0xEF];
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let state = STATE.put(State::new());
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let eth = unsafe {
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ETH.put(Ethernet::new(
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state, p.ETH, eth_int, p.PA1, p.PA2, p.PC1, p.PA7, p.PC4, p.PC5, p.PG13, p.PB13,
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p.PG11, LAN8742A, mac_addr, 0,
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))
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};
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let config = StaticConfigurator::new(NetConfig {
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address: Ipv4Cidr::new(Ipv4Address::new(192, 168, 0, 61), 24),
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dns_servers: Vec::new(),
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gateway: Some(Ipv4Address::new(192, 168, 0, 1)),
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});
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let config = CONFIG.put(config);
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let executor = EXECUTOR.put(Executor::new());
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executor.run(move |spawner| {
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unwrap!(spawner.spawn(main_task(eth, config, spawner)));
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})
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}
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