135 lines
4.5 KiB
Rust
135 lines
4.5 KiB
Rust
#![no_std]
|
|
#![no_main]
|
|
|
|
use defmt::*;
|
|
use embassy_executor::Spawner;
|
|
use embassy_net::tcp::TcpSocket;
|
|
use embassy_net::{Ipv4Address, StackResources};
|
|
use embassy_net_wiznet::chip::W5500;
|
|
use embassy_net_wiznet::{Device, Runner, State};
|
|
use embassy_stm32::exti::ExtiInput;
|
|
use embassy_stm32::gpio::{Level, Output, Pull, Speed};
|
|
use embassy_stm32::mode::Async;
|
|
use embassy_stm32::rng::Rng;
|
|
use embassy_stm32::spi::Spi;
|
|
use embassy_stm32::time::Hertz;
|
|
use embassy_stm32::{bind_interrupts, peripherals, rng, spi, Config};
|
|
use embassy_time::{Delay, Timer};
|
|
use embedded_hal_bus::spi::ExclusiveDevice;
|
|
use embedded_io_async::Write;
|
|
use static_cell::StaticCell;
|
|
use {defmt_rtt as _, panic_probe as _};
|
|
|
|
bind_interrupts!(struct Irqs {
|
|
HASH_RNG => rng::InterruptHandler<peripherals::RNG>;
|
|
});
|
|
|
|
type EthernetSPI = ExclusiveDevice<Spi<'static, Async>, Output<'static>, Delay>;
|
|
#[embassy_executor::task]
|
|
async fn ethernet_task(runner: Runner<'static, W5500, EthernetSPI, ExtiInput<'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 mut config = Config::default();
|
|
{
|
|
use embassy_stm32::rcc::*;
|
|
config.rcc.hse = Some(Hse {
|
|
freq: Hertz(8_000_000),
|
|
mode: HseMode::Bypass,
|
|
});
|
|
config.rcc.pll_src = PllSource::HSE;
|
|
config.rcc.pll = Some(Pll {
|
|
prediv: PllPreDiv::DIV4,
|
|
mul: PllMul::MUL180,
|
|
divp: Some(PllPDiv::DIV2), // 8mhz / 4 * 180 / 2 = 180Mhz.
|
|
divq: None,
|
|
divr: None,
|
|
});
|
|
config.rcc.ahb_pre = AHBPrescaler::DIV1;
|
|
config.rcc.apb1_pre = APBPrescaler::DIV4;
|
|
config.rcc.apb2_pre = APBPrescaler::DIV2;
|
|
config.rcc.sys = Sysclk::PLL1_P;
|
|
}
|
|
let p = embassy_stm32::init(config);
|
|
|
|
info!("Hello World!");
|
|
|
|
// Generate random seed
|
|
let mut rng = Rng::new(p.RNG, Irqs);
|
|
let mut seed = [0; 8];
|
|
unwrap!(rng.async_fill_bytes(&mut seed).await);
|
|
let seed = u64::from_le_bytes(seed);
|
|
|
|
let mut spi_cfg = spi::Config::default();
|
|
spi_cfg.frequency = Hertz(50_000_000); // up to 50m works
|
|
let (miso, mosi, clk) = (p.PA6, p.PA7, p.PA5);
|
|
let spi = Spi::new(p.SPI1, clk, mosi, miso, p.DMA2_CH3, p.DMA2_CH0, spi_cfg);
|
|
let cs = Output::new(p.PA4, Level::High, Speed::VeryHigh);
|
|
let spi = unwrap!(ExclusiveDevice::new(spi, cs, Delay));
|
|
|
|
let w5500_int = ExtiInput::new(p.PB0, p.EXTI0, Pull::Up);
|
|
let w5500_reset = Output::new(p.PB1, Level::High, Speed::VeryHigh);
|
|
|
|
let mac_addr = [0x02, 234, 3, 4, 82, 231];
|
|
static STATE: StaticCell<State<2, 2>> = StaticCell::new();
|
|
let state = STATE.init(State::<2, 2>::new());
|
|
let (device, runner) = embassy_net_wiznet::new(mac_addr, state, spi, w5500_int, w5500_reset)
|
|
.await
|
|
.unwrap();
|
|
unwrap!(spawner.spawn(ethernet_task(runner)));
|
|
|
|
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)),
|
|
//});
|
|
|
|
static RESOURCES: StaticCell<StackResources<3>> = StaticCell::new();
|
|
let (stack, runner) = embassy_net::new(device, config, RESOURCES.init(StackResources::new()), seed);
|
|
|
|
// Launch network task
|
|
unwrap!(spawner.spawn(net_task(runner)));
|
|
|
|
// Ensure DHCP configuration is up before trying connect
|
|
stack.wait_config_up().await;
|
|
|
|
info!("Network task initialized");
|
|
|
|
// Then we can use it!
|
|
let mut rx_buffer = [0; 1024];
|
|
let mut tx_buffer = [0; 1024];
|
|
|
|
loop {
|
|
let mut socket = TcpSocket::new(stack, &mut rx_buffer, &mut tx_buffer);
|
|
|
|
socket.set_timeout(Some(embassy_time::Duration::from_secs(10)));
|
|
|
|
let remote_endpoint = (Ipv4Address::new(10, 42, 0, 1), 8000);
|
|
info!("connecting...");
|
|
let r = socket.connect(remote_endpoint).await;
|
|
if let Err(e) = r {
|
|
info!("connect error: {:?}", e);
|
|
Timer::after_secs(1).await;
|
|
continue;
|
|
}
|
|
info!("connected!");
|
|
let buf = [0; 1024];
|
|
loop {
|
|
let r = socket.write_all(&buf).await;
|
|
if let Err(e) = r {
|
|
info!("write error: {:?}", e);
|
|
break;
|
|
}
|
|
Timer::after_secs(1).await;
|
|
}
|
|
}
|
|
}
|