125 lines
3.6 KiB
Rust
125 lines
3.6 KiB
Rust
#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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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::{Stack, StackResources};
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use embassy_net_enc28j60::Enc28j60;
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use embassy_nrf::gpio::{Level, Output, OutputDrive};
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use embassy_nrf::rng::Rng;
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use embassy_nrf::spim::Spim;
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use embassy_nrf::{bind_interrupts, peripherals, spim};
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use embassy_time::Delay;
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use embedded_hal_bus::spi::ExclusiveDevice;
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use embedded_io_async::Write;
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use static_cell::make_static;
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use {defmt_rtt as _, panic_probe as _};
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bind_interrupts!(struct Irqs {
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SPIM3 => spim::InterruptHandler<peripherals::SPI3>;
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RNG => embassy_nrf::rng::InterruptHandler<peripherals::RNG>;
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});
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#[embassy_executor::task]
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async fn net_task(
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stack: &'static Stack<
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Enc28j60<
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ExclusiveDevice<Spim<'static, peripherals::SPI3>, Output<'static, peripherals::P0_15>, Delay>,
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Output<'static, peripherals::P0_13>,
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>,
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>,
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) -> ! {
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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 p = embassy_nrf::init(Default::default());
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info!("running!");
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let eth_sck = p.P0_20;
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let eth_mosi = p.P0_22;
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let eth_miso = p.P0_24;
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let eth_cs = p.P0_15;
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let eth_rst = p.P0_13;
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let _eth_irq = p.P0_12;
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let mut config = spim::Config::default();
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config.frequency = spim::Frequency::M16;
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let spi = spim::Spim::new(p.SPI3, Irqs, eth_sck, eth_miso, eth_mosi, config);
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let cs = Output::new(eth_cs, Level::High, OutputDrive::Standard);
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let spi = ExclusiveDevice::new(spi, cs, Delay);
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let rst = Output::new(eth_rst, Level::High, OutputDrive::Standard);
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let mac_addr = [2, 3, 4, 5, 6, 7];
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let device = Enc28j60::new(spi, Some(rst), mac_addr);
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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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// 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.blocking_fill_bytes(&mut seed);
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let seed = u64::from_le_bytes(seed);
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// Init network stack
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let stack = &*make_static!(Stack::new(
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device,
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config,
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make_static!(StackResources::<2>::new()),
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seed
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));
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unwrap!(spawner.spawn(net_task(stack)));
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// And now 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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let mut buf = [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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info!("Listening on TCP:1234...");
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if let Err(e) = socket.accept(1234).await {
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warn!("accept error: {:?}", e);
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continue;
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}
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info!("Received connection from {:?}", socket.remote_endpoint());
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loop {
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let n = match socket.read(&mut buf).await {
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Ok(0) => {
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warn!("read EOF");
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break;
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}
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Ok(n) => n,
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Err(e) => {
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warn!("read error: {:?}", e);
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break;
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}
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};
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info!("rxd {:02x}", &buf[..n]);
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match socket.write_all(&buf[..n]).await {
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Ok(()) => {}
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Err(e) => {
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warn!("write error: {:?}", e);
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break;
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}
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};
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}
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}
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}
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