137 lines
3.9 KiB
Rust
137 lines
3.9 KiB
Rust
#![no_std]
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#![no_main]
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use defmt::*;
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use embassy_executor::Spawner;
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use embassy_net::tcp::TcpSocket;
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use embassy_net::{Ipv4Address, Stack, StackResources};
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use embassy_stm32::eth::generic_smi::GenericSMI;
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use embassy_stm32::eth::{Ethernet, 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::time::Hertz;
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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 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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HASH_RNG => rng::InterruptHandler<peripherals::RNG>;
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});
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type Device = Ethernet<'static, ETH, GenericSMI>;
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#[embassy_executor::task]
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async fn net_task(stack: &'static Stack<Device>) -> ! {
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stack.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.hse = Some(Hse {
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freq: Hertz(8_000_000),
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mode: HseMode::Bypass,
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});
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config.rcc.pll_src = PllSource::HSE;
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config.rcc.pll = Some(Pll {
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prediv: PllPreDiv::DIV4,
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mul: PllMul::MUL180,
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divp: Some(PllPDiv::DIV2), // 8mhz / 4 * 180 / 2 = 180Mhz.
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divq: None,
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divr: None,
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});
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config.rcc.ahb_pre = AHBPrescaler::DIV1;
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config.rcc.apb1_pre = APBPrescaler::DIV4;
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config.rcc.apb2_pre = APBPrescaler::DIV2;
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config.rcc.sys = Sysclk::PLL1_P;
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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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let _ = rng.async_fill_bytes(&mut seed).await;
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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<16, 16>> = StaticCell::new();
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let device = Ethernet::new(
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PACKETS.init(PacketQueue::<16, 16>::new()),
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p.ETH,
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Irqs,
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p.PA1,
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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.PG13,
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p.PB13,
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p.PG11,
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GenericSMI::new(0),
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mac_addr,
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);
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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 STACK: StaticCell<Stack<Device>> = StaticCell::new();
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static RESOURCES: StaticCell<StackResources<2>> = StaticCell::new();
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let stack = &*STACK.init(Stack::new(
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device,
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config,
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RESOURCES.init(StackResources::<2>::new()),
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seed,
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));
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// Launch network task
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unwrap!(spawner.spawn(net_task(stack)));
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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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// Then we can use it!
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let mut rx_buffer = [0; 4096];
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let mut tx_buffer = [0; 4096];
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loop {
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let mut socket = TcpSocket::new(&stack, &mut rx_buffer, &mut tx_buffer);
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socket.set_timeout(Some(embassy_time::Duration::from_secs(10)));
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let remote_endpoint = (Ipv4Address::new(10, 42, 0, 1), 8000);
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info!("connecting...");
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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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Timer::after_secs(1).await;
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continue;
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}
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info!("connected!");
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let buf = [0; 1024];
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loop {
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let r = socket.write_all(&buf).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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