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#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use defmt::*;
use embassy_executor::Spawner;
use embassy_net::tcp::client::{TcpClient, TcpClientState};
use embassy_net::{Stack, StackResources};
use embassy_stm32::eth::generic_smi::GenericSMI;
use embassy_stm32::eth::{Ethernet, PacketQueue};
use embassy_stm32::peripherals::ETH;
use embassy_stm32::rng::Rng;
use embassy_stm32::time::mhz;
use embassy_stm32::{interrupt, Config};
use embassy_time::{Duration, Timer};
use embedded_io::asynch::Write;
use embedded_nal_async::{Ipv4Addr, SocketAddr, SocketAddrV4, TcpConnect};
use rand_core::RngCore;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
macro_rules! singleton {
($val:expr) => {{
type T = impl Sized;
static STATIC_CELL: StaticCell<T> = StaticCell::new();
let (x,) = STATIC_CELL.init(($val,));
x
}};
}
type Device = Ethernet<'static, ETH, GenericSMI>;
#[embassy_executor::task]
async fn net_task(stack: &'static Stack<Device>) -> ! {
stack.run().await
}
#[embassy_executor::main]
async fn main(spawner: Spawner) -> ! {
let mut config = Config::default();
config.rcc.sys_ck = Some(mhz(400));
config.rcc.hclk = Some(mhz(200));
config.rcc.pll1.q_ck = Some(mhz(100));
let p = embassy_stm32::init(config);
info!("Hello World!");
// Generate random seed.
let mut rng = Rng::new(p.RNG);
let mut seed = [0; 8];
rng.fill_bytes(&mut seed);
let seed = u64::from_le_bytes(seed);
let eth_int = interrupt::take!(ETH);
let mac_addr = [0x00, 0x00, 0xDE, 0xAD, 0xBE, 0xEF];
let device = Ethernet::new(
singleton!(PacketQueue::<16, 16>::new()),
p.ETH,
eth_int,
p.PA1,
p.PA2,
p.PC1,
p.PA7,
p.PC4,
p.PC5,
p.PG13,
p.PB13,
p.PG11,
GenericSMI,
mac_addr,
0,
);
let config = embassy_net::Config::Dhcp(Default::default());
//let config = embassy_net::Config::StaticConfig(embassy_net::Config {
// address: Ipv4Cidr::new(Ipv4Address::new(10, 42, 0, 61), 24),
// dns_servers: Vec::new(),
// gateway: Some(Ipv4Address::new(10, 42, 0, 1)),
//});
// Init network stack
let stack = &*singleton!(Stack::new(device, config, singleton!(StackResources::<2>::new()), seed));
// Launch network task
unwrap!(spawner.spawn(net_task(&stack)));
info!("Network task initialized");
// To ensure DHCP configuration before trying connect
Timer::after(Duration::from_secs(20)).await;
static STATE: TcpClientState<1, 1024, 1024> = TcpClientState::new();
let client = TcpClient::new(&stack, &STATE);
loop {
let addr = SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::new(10, 42, 0, 1), 8000));
info!("connecting...");
let r = client.connect(addr).await;
if let Err(e) = r {
info!("connect error: {:?}", e);
Timer::after(Duration::from_secs(1)).await;
continue;
}
let mut connection = r.unwrap();
info!("connected!");
loop {
let r = connection.write_all(b"Hello\n").await;
if let Err(e) = r {
info!("write error: {:?}", e);
continue;
}
Timer::after(Duration::from_secs(1)).await;
}
}
}
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