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//! This example uses the RP Pico W board Wifi chip (cyw43).
//! Connects to specified Wifi network and creates a TCP endpoint on port 1234.
#![no_std]
#![no_main]
#![allow(async_fn_in_trait)]
use core::str::from_utf8;
use cyw43::JoinOptions;
use cyw43_pio::{DEFAULT_CLOCK_DIVIDER, PioSpi};
use defmt::*;
use embassy_executor::Spawner;
use embassy_net::tcp::TcpSocket;
use embassy_net::{Config, StackResources};
use embassy_rp::bind_interrupts;
use embassy_rp::clocks::RoscRng;
use embassy_rp::gpio::{Level, Output};
use embassy_rp::peripherals::{DMA_CH0, PIO0};
use embassy_rp::pio::{InterruptHandler, Pio};
use embassy_time::Duration;
use embedded_io_async::Write;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
PIO0_IRQ_0 => InterruptHandler<PIO0>;
});
const WIFI_NETWORK: &str = "ssid"; // change to your network SSID
const WIFI_PASSWORD: &str = "pwd"; // change to your network password
#[embassy_executor::task]
async fn cyw43_task(runner: cyw43::Runner<'static, Output<'static>, PioSpi<'static, PIO0, 0, DMA_CH0>>) -> ! {
runner.run().await
}
#[embassy_executor::task]
async fn net_task(mut runner: embassy_net::Runner<'static, cyw43::NetDriver<'static>>) -> ! {
runner.run().await
}
#[embassy_executor::main]
async fn main(spawner: Spawner) {
info!("Hello World!");
let p = embassy_rp::init(Default::default());
let mut rng = RoscRng;
let fw = include_bytes!("../../../../cyw43-firmware/43439A0.bin");
let clm = include_bytes!("../../../../cyw43-firmware/43439A0_clm.bin");
// To make flashing faster for development, you may want to flash the firmwares independently
// at hardcoded addresses, instead of baking them into the program with `include_bytes!`:
// probe-rs download 43439A0.bin --binary-format bin --chip RP2040 --base-address 0x10100000
// probe-rs download 43439A0_clm.bin --binary-format bin --chip RP2040 --base-address 0x10140000
//let fw = unsafe { core::slice::from_raw_parts(0x10100000 as *const u8, 230321) };
//let clm = unsafe { core::slice::from_raw_parts(0x10140000 as *const u8, 4752) };
let pwr = Output::new(p.PIN_23, Level::Low);
let cs = Output::new(p.PIN_25, Level::High);
let mut pio = Pio::new(p.PIO0, Irqs);
let spi = PioSpi::new(
&mut pio.common,
pio.sm0,
DEFAULT_CLOCK_DIVIDER,
pio.irq0,
cs,
p.PIN_24,
p.PIN_29,
p.DMA_CH0,
);
static STATE: StaticCell<cyw43::State> = StaticCell::new();
let state = STATE.init(cyw43::State::new());
let (net_device, mut control, runner) = cyw43::new(state, pwr, spi, fw).await;
spawner.spawn(unwrap!(cyw43_task(runner)));
control.init(clm).await;
control
.set_power_management(cyw43::PowerManagementMode::PowerSave)
.await;
let config = Config::dhcpv4(Default::default());
//let config = embassy_net::Config::ipv4_static(embassy_net::StaticConfigV4 {
// address: Ipv4Cidr::new(Ipv4Address::new(192, 168, 69, 2), 24),
// dns_servers: Vec::new(),
// gateway: Some(Ipv4Address::new(192, 168, 69, 1)),
//});
// Generate random seed
let seed = rng.next_u64();
// Init network stack
static RESOURCES: StaticCell<StackResources<3>> = StaticCell::new();
let (stack, runner) = embassy_net::new(net_device, config, RESOURCES.init(StackResources::new()), seed);
spawner.spawn(unwrap!(net_task(runner)));
while let Err(err) = control
.join(WIFI_NETWORK, JoinOptions::new(WIFI_PASSWORD.as_bytes()))
.await
{
info!("join failed: {:?}", err);
}
info!("waiting for link...");
stack.wait_link_up().await;
info!("waiting for DHCP...");
stack.wait_config_up().await;
// And now we can use it!
info!("Stack is up!");
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(Duration::from_secs(10)));
control.gpio_set(0, false).await;
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());
control.gpio_set(0, true).await;
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 {}", from_utf8(&buf[..n]).unwrap());
match socket.write_all(&buf[..n]).await {
Ok(()) => {}
Err(e) => {
warn!("write error: {:?}", e);
break;
}
};
}
}
}
|
