Merge branch 'main' into nrf54l15-wdt

embassy-nrf/src/chips/nrf54l15_app.rs

@@ -201,7 +201,9 @@ pub mod pac {
 pub const EASY_DMA_SIZE: usize = (1 << 16) - 1;
 //pub const FORCE_COPY_BUFFER_SIZE: usize = 1024;
 
-//pub const FLASH_SIZE: usize = 1024 * 1024;
+// 1.5 MB NVM
+#[allow(unused)]
+pub const FLASH_SIZE: usize = 1536 * 1024;
 
 embassy_hal_internal::peripherals! {
     // WDT
@@ -212,6 +214,10 @@ embassy_hal_internal::peripherals! {
     #[cfg(feature = "_s")]
     WDT1,
 
+    #[cfg(feature = "_s")]
+    // RRAMC
+    RRAMC,
+
     // GPIO port 0
     P0_00,
     P0_01,

embassy-nrf/src/lib.rs

@@ -98,8 +98,12 @@ pub mod ipc;
     feature = "_nrf5340-app"
 ))]
 pub mod nfct;
-#[cfg(not(feature = "_nrf54l"))] // TODO
+#[cfg(not(feature = "_nrf54l"))]
 pub mod nvmc;
+#[cfg(feature = "nrf54l15-app-s")]
+pub mod rramc;
+#[cfg(feature = "nrf54l15-app-s")]
+pub use rramc as nvmc;
 #[cfg(not(feature = "_nrf54l"))] // TODO
 #[cfg(any(
     feature = "nrf52810",

embassy-nrf/src/rramc.rs

@@ -0,0 +1,176 @@
+//! Resistive Random-Access Memory Controller driver.
+
+use core::{ptr, slice};
+
+use embedded_storage::nor_flash::{
+    ErrorType, MultiwriteNorFlash, NorFlash, NorFlashError, NorFlashErrorKind, ReadNorFlash,
+};
+
+use crate::peripherals::RRAMC;
+use crate::{pac, Peri};
+
+//
+// Export Nvmc alias and page size for downstream compatibility
+//
+/// RRAM-backed `Nvmc` compatibile driver.
+pub type Nvmc<'d> = Rramc<'d>;
+/// Emulated page size.  RRAM does not use pages. This exists only for downstream compatibility.
+pub const PAGE_SIZE: usize = 4096;
+
+// In bytes, one line is 128 bits
+const WRITE_LINE_SIZE: usize = 16;
+
+/// Size of RRAM flash in bytes.
+pub const FLASH_SIZE: usize = crate::chip::FLASH_SIZE;
+
+/// Error type for RRAMC operations.
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
+pub enum Error {
+    /// Operation using a location not in flash.
+    OutOfBounds,
+    /// Unaligned operation or using unaligned buffers.
+    Unaligned,
+}
+
+impl NorFlashError for Error {
+    fn kind(&self) -> NorFlashErrorKind {
+        match self {
+            Self::OutOfBounds => NorFlashErrorKind::OutOfBounds,
+            Self::Unaligned => NorFlashErrorKind::NotAligned,
+        }
+    }
+}
+
+/// Resistive Random-Access Memory Controller (RRAMC) that implements the `embedded-storage`
+/// traits.
+pub struct Rramc<'d> {
+    _p: Peri<'d, RRAMC>,
+}
+
+impl<'d> Rramc<'d> {
+    /// Create Rramc driver.
+    pub fn new(_p: Peri<'d, RRAMC>) -> Self {
+        Self { _p }
+    }
+
+    fn regs() -> pac::rramc::Rramc {
+        pac::RRAMC
+    }
+
+    fn wait_ready(&mut self) {
+        let p = Self::regs();
+        while !p.ready().read().ready() {}
+    }
+
+    fn wait_ready_write(&mut self) {
+        let p = Self::regs();
+        while !p.readynext().read().readynext() {}
+        while !p.bufstatus().writebufempty().read().empty() {}
+    }
+
+    fn enable_read(&self) {
+        Self::regs().config().write(|w| w.set_wen(false));
+    }
+
+    fn enable_write(&self) {
+        Self::regs().config().write(|w| w.set_wen(true));
+    }
+}
+
+//
+// RRAM is not NOR flash, but many crates require embedded-storage NorFlash traits. We therefore
+// implement the traits for downstream compatibility.
+//
+
+impl<'d> MultiwriteNorFlash for Rramc<'d> {}
+
+impl<'d> ErrorType for Rramc<'d> {
+    type Error = Error;
+}
+
+impl<'d> ReadNorFlash for Rramc<'d> {
+    const READ_SIZE: usize = 1;
+
+    fn read(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), Self::Error> {
+        if offset as usize >= FLASH_SIZE || offset as usize + bytes.len() > FLASH_SIZE {
+            return Err(Error::OutOfBounds);
+        }
+
+        let flash_data = unsafe { slice::from_raw_parts(offset as *const u8, bytes.len()) };
+        bytes.copy_from_slice(flash_data);
+        Ok(())
+    }
+
+    fn capacity(&self) -> usize {
+        FLASH_SIZE
+    }
+}
+
+impl<'d> NorFlash for Rramc<'d> {
+    const WRITE_SIZE: usize = WRITE_LINE_SIZE;
+    const ERASE_SIZE: usize = PAGE_SIZE;
+
+    // RRAM can overwrite in-place, so emulate page erases by overwriting the page bytes with 0xFF.
+    fn erase(&mut self, from: u32, to: u32) -> Result<(), Self::Error> {
+        if to < from || to as usize > FLASH_SIZE {
+            return Err(Error::OutOfBounds);
+        }
+        if from as usize % Self::ERASE_SIZE != 0 || to as usize % Self::ERASE_SIZE != 0 {
+            return Err(Error::Unaligned);
+        }
+
+        self.enable_write();
+        self.wait_ready();
+
+        // Treat each emulated page separately so callers can rely on post‑erase read‑back
+        // returning 0xFF just like on real NOR flash.
+        let buf = [0xFFu8; Self::WRITE_SIZE];
+        for page_addr in (from..to).step_by(Self::ERASE_SIZE) {
+            let page_end = page_addr + Self::ERASE_SIZE as u32;
+            for line_addr in (page_addr..page_end).step_by(Self::WRITE_SIZE) {
+                unsafe {
+                    let src = buf.as_ptr() as *const u32;
+                    let dst = line_addr as *mut u32;
+                    for i in 0..(Self::WRITE_SIZE / 4) {
+                        core::ptr::write_volatile(dst.add(i), core::ptr::read_unaligned(src.add(i)));
+                    }
+                }
+                self.wait_ready_write();
+            }
+        }
+
+        self.enable_read();
+        self.wait_ready();
+        Ok(())
+    }
+
+    fn write(&mut self, offset: u32, bytes: &[u8]) -> Result<(), Self::Error> {
+        if offset as usize + bytes.len() > FLASH_SIZE {
+            return Err(Error::OutOfBounds);
+        }
+        if offset as usize % Self::WRITE_SIZE != 0 || bytes.len() % Self::WRITE_SIZE != 0 {
+            return Err(Error::Unaligned);
+        }
+
+        self.enable_write();
+        self.wait_ready();
+
+        unsafe {
+            let p_src = bytes.as_ptr() as *const u32;
+            let p_dst = offset as *mut u32;
+            let words = bytes.len() / 4;
+            for i in 0..words {
+                let w = ptr::read_unaligned(p_src.add(i));
+                ptr::write_volatile(p_dst.add(i), w);
+                if (i + 1) % (Self::WRITE_SIZE / 4) == 0 {
+                    self.wait_ready_write();
+                }
+            }
+        }
+
+        self.enable_read();
+        self.wait_ready();
+        Ok(())
+    }
+}

examples/nrf54l15/Cargo.toml

@@ -16,5 +16,7 @@ panic-probe = { version = "1.0.0", features = ["print-defmt"] }
 cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
 cortex-m-rt = "0.7.0"
 
+embedded-storage = "0.3.1"
+
 [profile.release]
 debug = 2

examples/nrf54l15/src/bin/nvmc.rs

@@ -0,0 +1,44 @@
+#![no_std]
+#![no_main]
+
+use defmt::{info, unwrap};
+use embassy_executor::Spawner;
+use embassy_nrf::nvmc::{Nvmc, PAGE_SIZE};
+use embedded_storage::nor_flash::{NorFlash, ReadNorFlash};
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let p = embassy_nrf::init(Default::default());
+    info!("Hello RRAMC NVMC!");
+
+    let mut f = Nvmc::new(p.RRAMC);
+
+    const ADDR: u32 = 0x80000;
+    let mut buf = [0u8; 4];
+
+    info!("Reading...");
+    unwrap!(f.read(ADDR, &mut buf));
+    info!("Read: {=[u8]:x}", buf);
+
+    info!("Erasing...");
+    unwrap!(f.erase(ADDR, ADDR + PAGE_SIZE as u32));
+
+    info!("Reading...");
+    unwrap!(f.read(ADDR, &mut buf));
+    info!("Read: {=[u8]:x}", buf);
+
+    info!("Writing...");
+    // 16 B (128-bit) write minimum
+    let out: [u8; 16] = [
+        0xaa, 0xaa, 0xaa, 0xaa, 0xbb, 0xbb, 0xbb, 0xbb, 0xcc, 0xcc, 0xcc, 0xcc, 0xdd, 0xdd, 0xdd, 0xdd,
+    ];
+    unwrap!(f.write(ADDR, &out));
+
+    info!("Reading...");
+    // Can read arbitrary sizes
+    for addr in (ADDR..ADDR + 16).step_by(4) {
+        unwrap!(f.read(addr, &mut buf));
+        info!("Read: {=[u8]:x}", buf);
+    }
+}

examples/rp235x/Cargo.toml

@@ -12,7 +12,7 @@ embassy-executor = { version = "0.8.0", path = "../../embassy-executor", feature
 embassy-time = { version = "0.4.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-rp = { version = "0.7.0", path = "../../embassy-rp", features = ["defmt", "unstable-pac", "time-driver", "critical-section-impl", "rp235xa", "binary-info"] }
 embassy-usb = { version = "0.5.0", path = "../../embassy-usb", features = ["defmt"] }
-embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt", "tcp", "udp", "raw", "dhcpv4", "medium-ethernet", "dns"] }
+embassy-net = { version = "0.7.0", path = "../../embassy-net", features = ["defmt", "icmp", "tcp", "udp", "raw", "dhcpv4", "medium-ethernet", "dns"] }
 embassy-net-wiznet = { version = "0.2.0", path = "../../embassy-net-wiznet", features = ["defmt"] }
 embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }
 embassy-usb-logger = { version = "0.5.0", path = "../../embassy-usb-logger" }

examples/rp235x/src/bin/ethernet_w5500_icmp.rs

@@ -0,0 +1,143 @@
+//! This example implements an echo (ping) with an ICMP Socket and using defmt to report the results.
+//!
+//! Although there is a better way to execute pings using the child module ping of the icmp module,
+//! this example allows for other icmp messages like `Destination unreachable` to be sent aswell.
+//!
+//! Example written for the [`WIZnet W5500-EVB-Pico2`](https://docs.wiznet.io/Product/iEthernet/W5500/w5500-evb-pico2) board.
+
+#![no_std]
+#![no_main]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_futures::yield_now;
+use embassy_net::icmp::{ChecksumCapabilities, IcmpEndpoint, IcmpSocket, Icmpv4Packet, Icmpv4Repr, PacketMetadata};
+use embassy_net::{Stack, StackResources};
+use embassy_net_wiznet::chip::W5500;
+use embassy_net_wiznet::*;
+use embassy_rp::clocks::RoscRng;
+use embassy_rp::gpio::{Input, Level, Output, Pull};
+use embassy_rp::peripherals::SPI0;
+use embassy_rp::spi::{Async, Config as SpiConfig, Spi};
+use embassy_time::{Delay, Instant, Timer};
+use embedded_hal_bus::spi::ExclusiveDevice;
+use static_cell::StaticCell;
+use {defmt_rtt as _, panic_probe as _};
+
+type ExclusiveSpiDevice = ExclusiveDevice<Spi<'static, SPI0, Async>, Output<'static>, Delay>;
+
+#[embassy_executor::task]
+async fn ethernet_task(runner: Runner<'static, W5500, ExclusiveSpiDevice, Input<'static>, Output<'static>>) -> ! {
+    runner.run().await
+}
+
+#[embassy_executor::task]
+async fn net_task(mut runner: embassy_net::Runner<'static, Device<'static>>) -> ! {
+    runner.run().await
+}
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    let p = embassy_rp::init(Default::default());
+    let mut rng = RoscRng;
+
+    let mut spi_cfg = SpiConfig::default();
+    spi_cfg.frequency = 50_000_000;
+    let (miso, mosi, clk) = (p.PIN_16, p.PIN_19, p.PIN_18);
+    let spi = Spi::new(p.SPI0, clk, mosi, miso, p.DMA_CH0, p.DMA_CH1, spi_cfg);
+    let cs = Output::new(p.PIN_17, Level::High);
+    let w5500_int = Input::new(p.PIN_21, Pull::Up);
+    let w5500_reset = Output::new(p.PIN_20, Level::High);
+
+    let mac_addr = [0x02, 0x00, 0x00, 0x00, 0x00, 0x00];
+    static STATE: StaticCell<State<8, 8>> = StaticCell::new();
+    let state = STATE.init(State::<8, 8>::new());
+    let (device, runner) = embassy_net_wiznet::new(
+        mac_addr,
+        state,
+        ExclusiveDevice::new(spi, cs, Delay),
+        w5500_int,
+        w5500_reset,
+    )
+    .await
+    .unwrap();
+    unwrap!(spawner.spawn(ethernet_task(runner)));
+
+    // Generate random seed
+    let seed = rng.next_u64();
+
+    // Init network stack
+    static RESOURCES: StaticCell<StackResources<3>> = StaticCell::new();
+    let (stack, runner) = embassy_net::new(
+        device,
+        embassy_net::Config::dhcpv4(Default::default()),
+        RESOURCES.init(StackResources::new()),
+        seed,
+    );
+
+    // Launch network task
+    unwrap!(spawner.spawn(net_task(runner)));
+
+    info!("Waiting for DHCP...");
+    let cfg = wait_for_config(stack).await;
+    let local_addr = cfg.address.address();
+    info!("IP address: {:?}", local_addr);
+
+    // Then we can use it!
+    let mut rx_buffer = [0; 256];
+    let mut tx_buffer = [0; 256];
+    let mut rx_meta = [PacketMetadata::EMPTY];
+    let mut tx_meta = [PacketMetadata::EMPTY];
+
+    // Identifier used for the ICMP socket
+    let ident = 42;
+
+    // Create and bind the socket
+    let mut socket = IcmpSocket::new(stack, &mut rx_meta, &mut rx_buffer, &mut tx_meta, &mut tx_buffer);
+    socket.bind(IcmpEndpoint::Ident(ident)).unwrap();
+
+    // Create the repr for the packet
+    let icmp_repr = Icmpv4Repr::EchoRequest {
+        ident,
+        seq_no: 0,
+        data: b"Hello, icmp!",
+    };
+
+    // Send the packet and store the starting instant to mesure latency later
+    let start = socket
+        .send_to_with(icmp_repr.buffer_len(), cfg.gateway.unwrap(), |buf| {
+            // Create and populate the packet buffer allocated by `send_to_with`
+            let mut icmp_packet = Icmpv4Packet::new_unchecked(buf);
+            icmp_repr.emit(&mut icmp_packet, &ChecksumCapabilities::default());
+            Instant::now() // Return the instant where the packet was sent
+        })
+        .await
+        .unwrap();
+
+    // Recieve and log the data of the reply
+    socket
+        .recv_from_with(|(buf, addr)| {
+            let packet = Icmpv4Packet::new_checked(buf).unwrap();
+            info!(
+                "Recieved {:?} from {} in {}ms",
+                packet.data(),
+                addr,
+                start.elapsed().as_millis()
+            );
+        })
+        .await
+        .unwrap();
+
+    loop {
+        Timer::after_secs(10).await;
+    }
+}
+
+async fn wait_for_config(stack: Stack<'static>) -> embassy_net::StaticConfigV4 {
+    loop {
+        if let Some(config) = stack.config_v4() {
+            return config.clone();
+        }
+        yield_now().await;
+    }
+}

examples/rp235x/src/bin/ethernet_w5500_icmp_ping.rs

@@ -0,0 +1,134 @@
+//! This example implements a LAN ping scan with the ping utilities in the icmp module of embassy-net.
+//!
+//! Example written for the [`WIZnet W5500-EVB-Pico2`](https://docs.wiznet.io/Product/iEthernet/W5500/w5500-evb-pico2) board.
+
+#![no_std]
+#![no_main]
+
+use core::net::Ipv4Addr;
+use core::ops::Not;
+use core::str::FromStr;
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_futures::yield_now;
+use embassy_net::icmp::ping::{PingManager, PingParams};
+use embassy_net::icmp::PacketMetadata;
+use embassy_net::{Ipv4Cidr, Stack, StackResources};
+use embassy_net_wiznet::chip::W5500;
+use embassy_net_wiznet::*;
+use embassy_rp::clocks::RoscRng;
+use embassy_rp::gpio::{Input, Level, Output, Pull};
+use embassy_rp::peripherals::SPI0;
+use embassy_rp::spi::{Async, Config as SpiConfig, Spi};
+use embassy_time::{Delay, Duration};
+use embedded_hal_bus::spi::ExclusiveDevice;
+use static_cell::StaticCell;
+use {defmt_rtt as _, panic_probe as _};
+
+type ExclusiveSpiDevice = ExclusiveDevice<Spi<'static, SPI0, Async>, Output<'static>, Delay>;
+
+#[embassy_executor::task]
+async fn ethernet_task(runner: Runner<'static, W5500, ExclusiveSpiDevice, Input<'static>, Output<'static>>) -> ! {
+    runner.run().await
+}
+
+#[embassy_executor::task]
+async fn net_task(mut runner: embassy_net::Runner<'static, Device<'static>>) -> ! {
+    runner.run().await
+}
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    let p = embassy_rp::init(Default::default());
+    let mut rng = RoscRng;
+
+    let mut spi_cfg = SpiConfig::default();
+    spi_cfg.frequency = 50_000_000;
+    let (miso, mosi, clk) = (p.PIN_16, p.PIN_19, p.PIN_18);
+    let spi = Spi::new(p.SPI0, clk, mosi, miso, p.DMA_CH0, p.DMA_CH1, spi_cfg);
+    let cs = Output::new(p.PIN_17, Level::High);
+    let w5500_int = Input::new(p.PIN_21, Pull::Up);
+    let w5500_reset = Output::new(p.PIN_20, Level::High);
+
+    let mac_addr = [0x02, 0x00, 0x00, 0x00, 0x00, 0x00];
+    static STATE: StaticCell<State<8, 8>> = StaticCell::new();
+    let state = STATE.init(State::<8, 8>::new());
+    let (device, runner) = embassy_net_wiznet::new(
+        mac_addr,
+        state,
+        ExclusiveDevice::new(spi, cs, Delay),
+        w5500_int,
+        w5500_reset,
+    )
+    .await
+    .unwrap();
+    unwrap!(spawner.spawn(ethernet_task(runner)));
+
+    // Generate random seed
+    let seed = rng.next_u64();
+
+    // Init network stack
+    static RESOURCES: StaticCell<StackResources<3>> = StaticCell::new();
+    let (stack, runner) = embassy_net::new(
+        device,
+        embassy_net::Config::dhcpv4(Default::default()),
+        RESOURCES.init(StackResources::new()),
+        seed,
+    );
+
+    // Launch network task
+    unwrap!(spawner.spawn(net_task(runner)));
+
+    info!("Waiting for DHCP...");
+    let cfg = wait_for_config(stack).await;
+    let local_addr = cfg.address.address();
+    info!("IP address: {:?}", local_addr);
+    let gateway = cfg.gateway.unwrap();
+    let mask = cfg.address.netmask();
+    let lower_bound = (gateway.to_bits() & mask.to_bits()) + 1;
+    let upper_bound = gateway.to_bits() | mask.to_bits().not();
+    let addr_range = lower_bound..=upper_bound;
+
+    // Then we can use it!
+    let mut rx_buffer = [0; 256];
+    let mut tx_buffer = [0; 256];
+    let mut rx_meta = [PacketMetadata::EMPTY];
+    let mut tx_meta = [PacketMetadata::EMPTY];
+
+    // Create the ping manager instance
+    let mut ping_manager = PingManager::new(stack, &mut rx_meta, &mut rx_buffer, &mut tx_meta, &mut tx_buffer);
+    let addr = "192.168.8.1"; // Address to ping to
+                              // Create the PingParams with the target address
+    let mut ping_params = PingParams::new(Ipv4Addr::from_str(addr).unwrap());
+    // (optional) Set custom properties of the ping
+    ping_params.set_payload(b"Hello, Ping!"); // custom payload
+    ping_params.set_count(1); // ping 1 times per ping call
+    ping_params.set_timeout(Duration::from_millis(500)); // wait .5 seconds instead of 4
+
+    info!("Online hosts in {}:", Ipv4Cidr::from_netmask(gateway, mask).unwrap());
+    let mut total_online_hosts = 0u32;
+    for addr in addr_range {
+        let ip_addr = Ipv4Addr::from_bits(addr);
+        // Set the target address in the ping params
+        ping_params.set_target(ip_addr);
+        // Execute the ping with the given parameters and wait for the reply
+        match ping_manager.ping(&ping_params).await {
+            Ok(time) => {
+                info!("{} is online\n- latency: {}ms\n", ip_addr, time.as_millis());
+                total_online_hosts += 1;
+            }
+            _ => continue,
+        }
+    }
+    info!("Ping scan complete, total online hosts: {}", total_online_hosts);
+}
+
+async fn wait_for_config(stack: Stack<'static>) -> embassy_net::StaticConfigV4 {
+    loop {
+        if let Some(config) = stack.config_v4() {
+            return config.clone();
+        }
+        yield_now().await;
+    }
+}

examples/rp235x/src/bin/ethernet_w5500_multisocket.rs

@@ -0,0 +1,139 @@
+//! This example shows how you can allow multiple simultaneous TCP connections, by having multiple sockets listening on the same port.
+//!
+//! Example written for the [`WIZnet W5500-EVB-Pico2`](https://docs.wiznet.io/Product/iEthernet/W5500/w5500-evb-pico2) board.
+
+#![no_std]
+#![no_main]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_futures::yield_now;
+use embassy_net::{Stack, StackResources};
+use embassy_net_wiznet::chip::W5500;
+use embassy_net_wiznet::*;
+use embassy_rp::clocks::RoscRng;
+use embassy_rp::gpio::{Input, Level, Output, Pull};
+use embassy_rp::peripherals::SPI0;
+use embassy_rp::spi::{Async, Config as SpiConfig, Spi};
+use embassy_time::{Delay, Duration};
+use embedded_hal_bus::spi::ExclusiveDevice;
+use embedded_io_async::Write;
+use static_cell::StaticCell;
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::task]
+async fn ethernet_task(
+    runner: Runner<
+        'static,
+        W5500,
+        ExclusiveDevice<Spi<'static, SPI0, Async>, Output<'static>, Delay>,
+        Input<'static>,
+        Output<'static>,
+    >,
+) -> ! {
+    runner.run().await
+}
+
+#[embassy_executor::task]
+async fn net_task(mut runner: embassy_net::Runner<'static, Device<'static>>) -> ! {
+    runner.run().await
+}
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    let p = embassy_rp::init(Default::default());
+    let mut rng = RoscRng;
+
+    let mut spi_cfg = SpiConfig::default();
+    spi_cfg.frequency = 50_000_000;
+    let (miso, mosi, clk) = (p.PIN_16, p.PIN_19, p.PIN_18);
+    let spi = Spi::new(p.SPI0, clk, mosi, miso, p.DMA_CH0, p.DMA_CH1, spi_cfg);
+    let cs = Output::new(p.PIN_17, Level::High);
+    let w5500_int = Input::new(p.PIN_21, Pull::Up);
+    let w5500_reset = Output::new(p.PIN_20, Level::High);
+
+    let mac_addr = [0x02, 0x00, 0x00, 0x00, 0x00, 0x00];
+    static STATE: StaticCell<State<8, 8>> = StaticCell::new();
+    let state = STATE.init(State::<8, 8>::new());
+    let (device, runner) = embassy_net_wiznet::new(
+        mac_addr,
+        state,
+        ExclusiveDevice::new(spi, cs, Delay),
+        w5500_int,
+        w5500_reset,
+    )
+    .await
+    .unwrap();
+    unwrap!(spawner.spawn(ethernet_task(runner)));
+
+    // Generate random seed
+    let seed = rng.next_u64();
+
+    // Init network stack
+    static RESOURCES: StaticCell<StackResources<3>> = StaticCell::new();
+    let (stack, runner) = embassy_net::new(
+        device,
+        embassy_net::Config::dhcpv4(Default::default()),
+        RESOURCES.init(StackResources::new()),
+        seed,
+    );
+
+    // Launch network task
+    unwrap!(spawner.spawn(net_task(runner)));
+
+    info!("Waiting for DHCP...");
+    let cfg = wait_for_config(stack).await;
+    let local_addr = cfg.address.address();
+    info!("IP address: {:?}", local_addr);
+
+    // Create two sockets listening to the same port, to handle simultaneous connections
+    unwrap!(spawner.spawn(listen_task(stack, 0, 1234)));
+    unwrap!(spawner.spawn(listen_task(stack, 1, 1234)));
+}
+
+#[embassy_executor::task(pool_size = 2)]
+async fn listen_task(stack: Stack<'static>, id: u8, port: u16) {
+    let mut rx_buffer = [0; 4096];
+    let mut tx_buffer = [0; 4096];
+    let mut buf = [0; 4096];
+    loop {
+        let mut socket = embassy_net::tcp::TcpSocket::new(stack, &mut rx_buffer, &mut tx_buffer);
+        socket.set_timeout(Some(Duration::from_secs(10)));
+
+        info!("SOCKET {}: Listening on TCP:{}...", id, port);
+        if let Err(e) = socket.accept(port).await {
+            warn!("accept error: {:?}", e);
+            continue;
+        }
+        info!("SOCKET {}: Received connection from {:?}", id, socket.remote_endpoint());
+
+        loop {
+            let n = match socket.read(&mut buf).await {
+                Ok(0) => {
+                    warn!("read EOF");
+                    break;
+                }
+                Ok(n) => n,
+                Err(e) => {
+                    warn!("SOCKET {}: {:?}", id, e);
+                    break;
+                }
+            };
+            info!("SOCKET {}: rxd {}", id, core::str::from_utf8(&buf[..n]).unwrap());
+
+            if let Err(e) = socket.write_all(&buf[..n]).await {
+                warn!("write error: {:?}", e);
+                break;
+            }
+        }
+    }
+}
+
+async fn wait_for_config(stack: Stack<'static>) -> embassy_net::StaticConfigV4 {
+    loop {
+        if let Some(config) = stack.config_v4() {
+            return config.clone();
+        }
+        yield_now().await;
+    }
+}

examples/rp235x/src/bin/ethernet_w5500_tcp_client.rs

@@ -0,0 +1,127 @@
+//! This example implements a TCP client that attempts to connect to a host on port 1234 and send it some data once per second.
+//!
+//! Example written for the [`WIZnet W5500-EVB-Pico2`](https://docs.wiznet.io/Product/iEthernet/W5500/w5500-evb-pico2) board.
+
+#![no_std]
+#![no_main]
+
+use core::str::FromStr;
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_futures::yield_now;
+use embassy_net::{Stack, StackResources};
+use embassy_net_wiznet::chip::W5500;
+use embassy_net_wiznet::*;
+use embassy_rp::clocks::RoscRng;
+use embassy_rp::gpio::{Input, Level, Output, Pull};
+use embassy_rp::peripherals::SPI0;
+use embassy_rp::spi::{Async, Config as SpiConfig, Spi};
+use embassy_time::{Delay, Duration, Timer};
+use embedded_hal_bus::spi::ExclusiveDevice;
+use embedded_io_async::Write;
+use static_cell::StaticCell;
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::task]
+async fn ethernet_task(
+    runner: Runner<
+        'static,
+        W5500,
+        ExclusiveDevice<Spi<'static, SPI0, Async>, Output<'static>, Delay>,
+        Input<'static>,
+        Output<'static>,
+    >,
+) -> ! {
+    runner.run().await
+}
+
+#[embassy_executor::task]
+async fn net_task(mut runner: embassy_net::Runner<'static, Device<'static>>) -> ! {
+    runner.run().await
+}
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    let p = embassy_rp::init(Default::default());
+    let mut rng = RoscRng;
+    let mut led = Output::new(p.PIN_25, Level::Low);
+
+    let mut spi_cfg = SpiConfig::default();
+    spi_cfg.frequency = 50_000_000;
+    let (miso, mosi, clk) = (p.PIN_16, p.PIN_19, p.PIN_18);
+    let spi = Spi::new(p.SPI0, clk, mosi, miso, p.DMA_CH0, p.DMA_CH1, spi_cfg);
+    let cs = Output::new(p.PIN_17, Level::High);
+    let w5500_int = Input::new(p.PIN_21, Pull::Up);
+    let w5500_reset = Output::new(p.PIN_20, Level::High);
+
+    let mac_addr = [0x02, 0x00, 0x00, 0x00, 0x00, 0x00];
+    static STATE: StaticCell<State<8, 8>> = StaticCell::new();
+    let state = STATE.init(State::<8, 8>::new());
+    let (device, runner) = embassy_net_wiznet::new(
+        mac_addr,
+        state,
+        ExclusiveDevice::new(spi, cs, Delay),
+        w5500_int,
+        w5500_reset,
+    )
+    .await
+    .unwrap();
+    unwrap!(spawner.spawn(ethernet_task(runner)));
+
+    // Generate random seed
+    let seed = rng.next_u64();
+
+    // Init network stack
+    static RESOURCES: StaticCell<StackResources<3>> = StaticCell::new();
+    let (stack, runner) = embassy_net::new(
+        device,
+        embassy_net::Config::dhcpv4(Default::default()),
+        RESOURCES.init(StackResources::new()),
+        seed,
+    );
+
+    // Launch network task
+    unwrap!(spawner.spawn(net_task(runner)));
+
+    info!("Waiting for DHCP...");
+    let cfg = wait_for_config(stack).await;
+    let local_addr = cfg.address.address();
+    info!("IP address: {:?}", local_addr);
+
+    let mut rx_buffer = [0; 4096];
+    let mut tx_buffer = [0; 4096];
+    loop {
+        let mut socket = embassy_net::tcp::TcpSocket::new(stack, &mut rx_buffer, &mut tx_buffer);
+        socket.set_timeout(Some(Duration::from_secs(10)));
+
+        led.set_low();
+        info!("Connecting...");
+        let host_addr = embassy_net::Ipv4Address::from_str("192.168.0.118").unwrap();
+        if let Err(e) = socket.connect((host_addr, 1234)).await {
+            warn!("connect error: {:?}", e);
+            continue;
+        }
+        info!("Connected to {:?}", socket.remote_endpoint());
+        led.set_high();
+
+        let msg = b"Hello world!\n";
+        loop {
+            if let Err(e) = socket.write_all(msg).await {
+                warn!("write error: {:?}", e);
+                break;
+            }
+            info!("txd: {}", core::str::from_utf8(msg).unwrap());
+            Timer::after_secs(1).await;
+        }
+    }
+}
+
+async fn wait_for_config(stack: Stack<'static>) -> embassy_net::StaticConfigV4 {
+    loop {
+        if let Some(config) = stack.config_v4() {
+            return config.clone();
+        }
+        yield_now().await;
+    }
+}

examples/rp235x/src/bin/ethernet_w5500_tcp_server.rs

@@ -0,0 +1,136 @@
+//! This example implements a TCP echo server on port 1234 and using DHCP.
+//! Send it some data, you should see it echoed back and printed in the console.
+//!
+//! Example written for the [`WIZnet W5500-EVB-Pico2`](https://docs.wiznet.io/Product/iEthernet/W5500/w5500-evb-pico2) board.
+
+#![no_std]
+#![no_main]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_futures::yield_now;
+use embassy_net::{Stack, StackResources};
+use embassy_net_wiznet::chip::W5500;
+use embassy_net_wiznet::*;
+use embassy_rp::clocks::RoscRng;
+use embassy_rp::gpio::{Input, Level, Output, Pull};
+use embassy_rp::peripherals::SPI0;
+use embassy_rp::spi::{Async, Config as SpiConfig, Spi};
+use embassy_time::{Delay, Duration};
+use embedded_hal_bus::spi::ExclusiveDevice;
+use embedded_io_async::Write;
+use static_cell::StaticCell;
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::task]
+async fn ethernet_task(
+    runner: Runner<
+        'static,
+        W5500,
+        ExclusiveDevice<Spi<'static, SPI0, Async>, Output<'static>, Delay>,
+        Input<'static>,
+        Output<'static>,
+    >,
+) -> ! {
+    runner.run().await
+}
+
+#[embassy_executor::task]
+async fn net_task(mut runner: embassy_net::Runner<'static, Device<'static>>) -> ! {
+    runner.run().await
+}
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    let p = embassy_rp::init(Default::default());
+    let mut rng = RoscRng;
+    let mut led = Output::new(p.PIN_25, Level::Low);
+
+    let mut spi_cfg = SpiConfig::default();
+    spi_cfg.frequency = 50_000_000;
+    let (miso, mosi, clk) = (p.PIN_16, p.PIN_19, p.PIN_18);
+    let spi = Spi::new(p.SPI0, clk, mosi, miso, p.DMA_CH0, p.DMA_CH1, spi_cfg);
+    let cs = Output::new(p.PIN_17, Level::High);
+    let w5500_int = Input::new(p.PIN_21, Pull::Up);
+    let w5500_reset = Output::new(p.PIN_20, Level::High);
+
+    let mac_addr = [0x02, 0x00, 0x00, 0x00, 0x00, 0x00];
+    static STATE: StaticCell<State<8, 8>> = StaticCell::new();
+    let state = STATE.init(State::<8, 8>::new());
+    let (device, runner) = embassy_net_wiznet::new(
+        mac_addr,
+        state,
+        ExclusiveDevice::new(spi, cs, Delay),
+        w5500_int,
+        w5500_reset,
+    )
+    .await
+    .unwrap();
+    unwrap!(spawner.spawn(ethernet_task(runner)));
+
+    // Generate random seed
+    let seed = rng.next_u64();
+
+    // Init network stack
+    static RESOURCES: StaticCell<StackResources<3>> = StaticCell::new();
+    let (stack, runner) = embassy_net::new(
+        device,
+        embassy_net::Config::dhcpv4(Default::default()),
+        RESOURCES.init(StackResources::new()),
+        seed,
+    );
+
+    // Launch network task
+    unwrap!(spawner.spawn(net_task(runner)));
+
+    info!("Waiting for DHCP...");
+    let cfg = wait_for_config(stack).await;
+    let local_addr = cfg.address.address();
+    info!("IP address: {:?}", local_addr);
+
+    let mut rx_buffer = [0; 4096];
+    let mut tx_buffer = [0; 4096];
+    let mut buf = [0; 4096];
+    loop {
+        let mut socket = embassy_net::tcp::TcpSocket::new(stack, &mut rx_buffer, &mut tx_buffer);
+        socket.set_timeout(Some(Duration::from_secs(10)));
+
+        led.set_low();
+        info!("Listening on TCP:1234...");
+        if let Err(e) = socket.accept(1234).await {
+            warn!("accept error: {:?}", e);
+            continue;
+        }
+        info!("Received connection from {:?}", socket.remote_endpoint());
+        led.set_high();
+
+        loop {
+            let n = match socket.read(&mut buf).await {
+                Ok(0) => {
+                    warn!("read EOF");
+                    break;
+                }
+                Ok(n) => n,
+                Err(e) => {
+                    warn!("{:?}", e);
+                    break;
+                }
+            };
+            info!("rxd {}", core::str::from_utf8(&buf[..n]).unwrap());
+
+            if let Err(e) = socket.write_all(&buf[..n]).await {
+                warn!("write error: {:?}", e);
+                break;
+            }
+        }
+    }
+}
+
+async fn wait_for_config(stack: Stack<'static>) -> embassy_net::StaticConfigV4 {
+    loop {
+        if let Some(config) = stack.config_v4() {
+            return config.clone();
+        }
+        yield_now().await;
+    }
+}

examples/rp235x/src/bin/ethernet_w5500_udp.rs

@@ -0,0 +1,116 @@
+//! This example implements a UDP server listening on port 1234 and echoing back the data.
+//!
+//! Example written for the [`WIZnet W5500-EVB-Pico2`](https://docs.wiznet.io/Product/iEthernet/W5500/w5500-evb-pico2) board.
+
+#![no_std]
+#![no_main]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_futures::yield_now;
+use embassy_net::udp::{PacketMetadata, UdpSocket};
+use embassy_net::{Stack, StackResources};
+use embassy_net_wiznet::chip::W5500;
+use embassy_net_wiznet::*;
+use embassy_rp::clocks::RoscRng;
+use embassy_rp::gpio::{Input, Level, Output, Pull};
+use embassy_rp::peripherals::SPI0;
+use embassy_rp::spi::{Async, Config as SpiConfig, Spi};
+use embassy_time::Delay;
+use embedded_hal_bus::spi::ExclusiveDevice;
+use static_cell::StaticCell;
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::task]
+async fn ethernet_task(
+    runner: Runner<
+        'static,
+        W5500,
+        ExclusiveDevice<Spi<'static, SPI0, Async>, Output<'static>, Delay>,
+        Input<'static>,
+        Output<'static>,
+    >,
+) -> ! {
+    runner.run().await
+}
+
+#[embassy_executor::task]
+async fn net_task(mut runner: embassy_net::Runner<'static, Device<'static>>) -> ! {
+    runner.run().await
+}
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    let p = embassy_rp::init(Default::default());
+    let mut rng = RoscRng;
+
+    let mut spi_cfg = SpiConfig::default();
+    spi_cfg.frequency = 50_000_000;
+    let (miso, mosi, clk) = (p.PIN_16, p.PIN_19, p.PIN_18);
+    let spi = Spi::new(p.SPI0, clk, mosi, miso, p.DMA_CH0, p.DMA_CH1, spi_cfg);
+    let cs = Output::new(p.PIN_17, Level::High);
+    let w5500_int = Input::new(p.PIN_21, Pull::Up);
+    let w5500_reset = Output::new(p.PIN_20, Level::High);
+
+    let mac_addr = [0x02, 0x00, 0x00, 0x00, 0x00, 0x00];
+    static STATE: StaticCell<State<8, 8>> = StaticCell::new();
+    let state = STATE.init(State::<8, 8>::new());
+    let (device, runner) = embassy_net_wiznet::new(
+        mac_addr,
+        state,
+        ExclusiveDevice::new(spi, cs, Delay),
+        w5500_int,
+        w5500_reset,
+    )
+    .await
+    .unwrap();
+    unwrap!(spawner.spawn(ethernet_task(runner)));
+
+    // Generate random seed
+    let seed = rng.next_u64();
+
+    // Init network stack
+    static RESOURCES: StaticCell<StackResources<3>> = StaticCell::new();
+    let (stack, runner) = embassy_net::new(
+        device,
+        embassy_net::Config::dhcpv4(Default::default()),
+        RESOURCES.init(StackResources::new()),
+        seed,
+    );
+
+    // Launch network task
+    unwrap!(spawner.spawn(net_task(runner)));
+
+    info!("Waiting for DHCP...");
+    let cfg = wait_for_config(stack).await;
+    let local_addr = cfg.address.address();
+    info!("IP address: {:?}", local_addr);
+
+    // Then we can use it!
+    let mut rx_buffer = [0; 4096];
+    let mut tx_buffer = [0; 4096];
+    let mut rx_meta = [PacketMetadata::EMPTY; 16];
+    let mut tx_meta = [PacketMetadata::EMPTY; 16];
+    let mut buf = [0; 4096];
+    loop {
+        let mut socket = UdpSocket::new(stack, &mut rx_meta, &mut rx_buffer, &mut tx_meta, &mut tx_buffer);
+        socket.bind(1234).unwrap();
+
+        loop {
+            let (n, ep) = socket.recv_from(&mut buf).await.unwrap();
+            if let Ok(s) = core::str::from_utf8(&buf[..n]) {
+                info!("rxd from {}: {}", ep, s);
+            }
+            socket.send_to(&buf[..n], ep).await.unwrap();
+        }
+    }
+}
+
+async fn wait_for_config(stack: Stack<'static>) -> embassy_net::StaticConfigV4 {
+    loop {
+        if let Some(config) = stack.config_v4() {
+            return config.clone();
+        }
+        yield_now().await;
+    }
+}