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|
#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_net::tcp::TcpSocket;
use embassy_net::{Ipv4Address, StackResources};
use embassy_stm32::eth::{Ethernet, GenericPhy, PacketQueue};
use embassy_stm32::peripherals::ETH;
use embassy_stm32::rng::Rng;
use embassy_stm32::time::Hertz;
use embassy_stm32::{bind_interrupts, eth, peripherals, rng, Config};
use embassy_time::Timer;
use embedded_io_async::Write;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
ETH => eth::InterruptHandler;
HASH_RNG => rng::InterruptHandler<peripherals::RNG>;
});
type Device = Ethernet<'static, ETH, GenericPhy>;
#[embassy_executor::task]
async fn net_task(mut runner: embassy_net::Runner<'static, Device>) -> ! {
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::MUL216,
divp: Some(PllPDiv::DIV2), // 8mhz / 4 * 216 / 2 = 216Mhz
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];
rng.fill_bytes(&mut seed);
let seed = u64::from_le_bytes(seed);
let mac_addr = [0x00, 0x00, 0xDE, 0xAD, 0xBE, 0xEF];
static PACKETS: StaticCell<PacketQueue<4, 4>> = StaticCell::new();
let device = Ethernet::new(
PACKETS.init(PacketQueue::<4, 4>::new()),
p.ETH,
Irqs,
p.PA1,
p.PA2,
p.PC1,
p.PA7,
p.PC4,
p.PC5,
p.PG13,
p.PB13,
p.PG11,
GenericPhy::new_auto(),
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)),
//});
// Init network stack
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; 4096];
let mut tx_buffer = [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)));
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;
}
}
}
|
