b1245858f3
We shouldn't use `unsafe` to mark merely "dangerous" actions, only actions that actually cause UB.
138 lines
4.1 KiB
Rust
138 lines
4.1 KiB
Rust
#![no_std]
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#![no_main]
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use core::net::{Ipv4Addr, SocketAddr, SocketAddrV4};
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use defmt::*;
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use embassy_executor::Spawner;
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use embassy_net::tcp::client::{TcpClient, TcpClientState};
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use embassy_net::StackResources;
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use embassy_stm32::eth::{Ethernet, GenericPhy, PacketQueue};
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use embassy_stm32::peripherals::ETH;
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use embassy_stm32::rng::Rng;
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use embassy_stm32::{bind_interrupts, eth, peripherals, rng, Config};
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use embassy_time::Timer;
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use embedded_io_async::Write;
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use embedded_nal_async::TcpConnect;
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use rand_core::RngCore;
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use static_cell::StaticCell;
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use {defmt_rtt as _, panic_probe as _};
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bind_interrupts!(struct Irqs {
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ETH => eth::InterruptHandler;
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RNG => rng::InterruptHandler<peripherals::RNG>;
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});
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type Device = Ethernet<'static, ETH, GenericPhy>;
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#[embassy_executor::task]
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async fn net_task(mut runner: embassy_net::Runner<'static, Device>) -> ! {
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runner.run().await
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}
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#[embassy_executor::main]
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async fn main(spawner: Spawner) -> ! {
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let mut config = Config::default();
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{
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use embassy_stm32::rcc::*;
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config.rcc.hsi = Some(HSIPrescaler::DIV1);
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config.rcc.csi = true;
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config.rcc.hsi48 = Some(Default::default()); // needed for RNG
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config.rcc.pll1 = Some(Pll {
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source: PllSource::HSI,
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prediv: PllPreDiv::DIV4,
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mul: PllMul::MUL50,
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divp: Some(PllDiv::DIV2),
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divq: None,
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divr: None,
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});
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config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
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config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
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config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
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config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz
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config.rcc.apb3_pre = APBPrescaler::DIV2; // 100 Mhz
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config.rcc.apb4_pre = APBPrescaler::DIV2; // 100 Mhz
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config.rcc.voltage_scale = VoltageScale::Scale1;
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}
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let p = embassy_stm32::init(config);
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info!("Hello World!");
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// Generate random seed.
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let mut rng = Rng::new(p.RNG, Irqs);
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let mut seed = [0; 8];
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rng.fill_bytes(&mut seed);
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let seed = u64::from_le_bytes(seed);
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let mac_addr = [0x00, 0x00, 0xDE, 0xAD, 0xBE, 0xEF];
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static PACKETS: StaticCell<PacketQueue<4, 4>> = StaticCell::new();
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let device = Ethernet::new_mii(
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PACKETS.init(PacketQueue::<4, 4>::new()),
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p.ETH,
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Irqs,
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p.PA1,
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p.PC3,
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p.PA2,
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p.PC1,
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p.PA7,
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p.PC4,
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p.PC5,
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p.PB0,
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p.PB1,
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p.PG13,
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p.PG12,
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p.PC2,
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p.PE2,
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p.PG11,
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GenericPhy::new_auto(),
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mac_addr,
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);
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info!("Device created");
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let config = embassy_net::Config::dhcpv4(Default::default());
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//let config = embassy_net::Config::ipv4_static(embassy_net::StaticConfigV4 {
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// address: Ipv4Cidr::new(Ipv4Address::new(10, 42, 0, 61), 24),
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// dns_servers: Vec::new(),
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// gateway: Some(Ipv4Address::new(10, 42, 0, 1)),
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//});
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// Init network stack
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static RESOURCES: StaticCell<StackResources<3>> = StaticCell::new();
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let (stack, runner) = embassy_net::new(device, config, RESOURCES.init(StackResources::new()), seed);
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// Launch network task
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unwrap!(spawner.spawn(net_task(runner)));
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// Ensure DHCP configuration is up before trying connect
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stack.wait_config_up().await;
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info!("Network task initialized");
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let state: TcpClientState<1, 1024, 1024> = TcpClientState::new();
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let client = TcpClient::new(stack, &state);
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loop {
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// You need to start a server on the host machine, for example: `nc -l 8000`
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let addr = SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::new(192, 168, 100, 1), 8000));
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info!("connecting...");
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let r = client.connect(addr).await;
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if let Err(e) = r {
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info!("connect error: {:?}", e);
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Timer::after_secs(1).await;
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continue;
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}
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let mut connection = r.unwrap();
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info!("connected!");
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loop {
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let r = connection.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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break;
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}
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Timer::after_secs(1).await;
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}
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}
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}
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