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