From 4af1cf88d29f29df52f8c9e7928409e60a91ffbc Mon Sep 17 00:00:00 2001 From: Dario Nieuwenhuis Date: Sat, 5 Aug 2023 19:10:45 +0200 Subject: [PATCH] net-enc28j60: add example. --- examples/nrf52840/Cargo.toml | 4 + .../nrf52840/src/bin/ethernet_enc28j60.rs | 124 ++++++++++++++++++ 2 files changed, 128 insertions(+) create mode 100644 examples/nrf52840/src/bin/ethernet_enc28j60.rs diff --git a/examples/nrf52840/Cargo.toml b/examples/nrf52840/Cargo.toml index 15fe22d3..8c6f6bcc 100644 --- a/examples/nrf52840/Cargo.toml +++ b/examples/nrf52840/Cargo.toml @@ -12,6 +12,7 @@ nightly = [ "embassy-nrf/nightly", "embassy-net/nightly", "embassy-net-esp-hosted", + "embassy-net-enc28j60", "embassy-nrf/unstable-traits", "embassy-time/nightly", "embassy-time/unstable-traits", @@ -40,6 +41,7 @@ lora-phy = { version = "1", optional = true } lorawan-device = { version = "0.10.0", default-features = false, features = ["async", "external-lora-phy"], optional = true } lorawan = { version = "0.7.3", default-features = false, features = ["default-crypto"], optional = true } embassy-net-esp-hosted = { version = "0.1.0", path = "../../embassy-net-esp-hosted", features = ["defmt"], optional = true } +embassy-net-enc28j60 = { version = "0.1.0", path = "../../embassy-net-enc28j60", features = ["defmt"], optional = true } defmt = "0.3" defmt-rtt = "0.4" @@ -54,7 +56,9 @@ rand = { version = "0.8.4", default-features = false } embedded-storage = "0.3.0" usbd-hid = "0.6.0" serde = { version = "1.0.136", default-features = false } +embedded-hal = { version = "1.0.0-alpha.11" } embedded-hal-async = { version = "0.2.0-alpha.2", optional = true } +embedded-hal-bus = { version = "0.1.0-alpha.3" } num-integer = { version = "0.1.45", default-features = false } microfft = "0.5.0" diff --git a/examples/nrf52840/src/bin/ethernet_enc28j60.rs b/examples/nrf52840/src/bin/ethernet_enc28j60.rs new file mode 100644 index 00000000..d1b796fa --- /dev/null +++ b/examples/nrf52840/src/bin/ethernet_enc28j60.rs @@ -0,0 +1,124 @@ +#![no_std] +#![no_main] +#![feature(type_alias_impl_trait)] + +use defmt::*; +use embassy_executor::Spawner; +use embassy_net::tcp::TcpSocket; +use embassy_net::{Stack, StackResources}; +use embassy_net_enc28j60::Enc28j60; +use embassy_nrf::gpio::{Level, Output, OutputDrive}; +use embassy_nrf::rng::Rng; +use embassy_nrf::spim::Spim; +use embassy_nrf::{bind_interrupts, peripherals, spim}; +use embassy_time::Delay; +use embedded_hal_bus::spi::ExclusiveDevice; +use embedded_io_async::Write; +use static_cell::make_static; +use {defmt_rtt as _, panic_probe as _}; + +bind_interrupts!(struct Irqs { + SPIM3 => spim::InterruptHandler; + RNG => embassy_nrf::rng::InterruptHandler; +}); + +#[embassy_executor::task] +async fn net_task( + stack: &'static Stack< + Enc28j60< + ExclusiveDevice, Output<'static, peripherals::P0_15>, Delay>, + Output<'static, peripherals::P0_13>, + >, + >, +) -> ! { + stack.run().await +} + +#[embassy_executor::main] +async fn main(spawner: Spawner) { + let p = embassy_nrf::init(Default::default()); + info!("running!"); + + let eth_sck = p.P0_20; + let eth_mosi = p.P0_22; + let eth_miso = p.P0_24; + let eth_cs = p.P0_15; + let eth_rst = p.P0_13; + let _eth_irq = p.P0_12; + + let mut config = spim::Config::default(); + config.frequency = spim::Frequency::M16; + let spi = spim::Spim::new(p.SPI3, Irqs, eth_sck, eth_miso, eth_mosi, config); + let cs = Output::new(eth_cs, Level::High, OutputDrive::Standard); + let spi = ExclusiveDevice::new(spi, cs, Delay); + + let rst = Output::new(eth_rst, Level::High, OutputDrive::Standard); + let mac_addr = [2, 3, 4, 5, 6, 7]; + let device = Enc28j60::new(spi, Some(rst), mac_addr); + + let config = embassy_net::Config::dhcpv4(Default::default()); + // let config = embassy_net::Config::ipv4_static(embassy_net::StaticConfigV4 { + // address: Ipv4Cidr::new(Ipv4Address::new(10, 42, 0, 61), 24), + // dns_servers: Vec::new(), + // gateway: Some(Ipv4Address::new(10, 42, 0, 1)), + // }); + + // Generate random seed + let mut rng = Rng::new(p.RNG, Irqs); + let mut seed = [0; 8]; + rng.blocking_fill_bytes(&mut seed); + let seed = u64::from_le_bytes(seed); + + // Init network stack + let stack = &*make_static!(Stack::new( + device, + config, + make_static!(StackResources::<2>::new()), + seed + )); + + unwrap!(spawner.spawn(net_task(stack))); + + // And now we can use it! + + let mut rx_buffer = [0; 4096]; + let mut tx_buffer = [0; 4096]; + let mut buf = [0; 4096]; + + loop { + let mut socket = TcpSocket::new(stack, &mut rx_buffer, &mut tx_buffer); + socket.set_timeout(Some(embassy_time::Duration::from_secs(10))); + + 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()); + + loop { + let n = match socket.read(&mut buf).await { + Ok(0) => { + warn!("read EOF"); + break; + } + Ok(n) => n, + Err(e) => { + warn!("read error: {:?}", e); + break; + } + }; + + info!("rxd {:02x}", &buf[..n]); + + match socket.write_all(&buf[..n]).await { + Ok(()) => {} + Err(e) => { + warn!("write error: {:?}", e); + break; + } + }; + } + } +}