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WiFi Example

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Avii
2025-07-08 15:53:23 +02:00
parent 093bd5603e
commit 748bd92010
4 changed files with 296 additions and 20 deletions
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2
.cargo/config.toml
View File

@@ -4,6 +4,8 @@ runner = "espflash flash --monitor"
[env]
ESP_LOG = "info"
SSID = "ssid"
PASSWORD = "password"
[build]
rustflags = ["-C", "link-arg=-nostartfiles", "-C", "link-arg=-Wl,-Tlinkall.x"]

115
Cargo.lock generated
View File

@@ -263,6 +263,29 @@ version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1f878075b9794c1e4ac788c95b728f26aa6366d32eeb10c7051389f898f7d067"
[[package]]
name = "embassy-net"
version = "0.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "940c4b9fe5c1375b09a0c6722c0100d6b2ed46a717a34f632f26e8d7327c4383"
dependencies = [
"document-features",
"embassy-net-driver",
"embassy-sync",
"embassy-time",
"embedded-io-async",
"embedded-nal-async",
"heapless",
"managed",
"smoltcp",
]
[[package]]
name = "embassy-net-driver"
version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "524eb3c489760508f71360112bca70f6e53173e6fe48fc5f0efd0f5ab217751d"
[[package]]
name = "embassy-sync"
version = "0.6.2"
@@ -361,6 +384,25 @@ dependencies = [
"embedded-io",
]
[[package]]
name = "embedded-nal"
version = "0.9.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c56a28be191a992f28f178ec338a0bf02f63d7803244add736d026a471e6ed77"
dependencies = [
"nb 1.1.0",
]
[[package]]
name = "embedded-nal-async"
version = "0.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "76959917cd2b86f40a98c28dd5624eddd1fa69d746241c8257eac428d83cb211"
dependencies = [
"embedded-io-async",
"embedded-nal",
]
[[package]]
name = "embedded-storage"
version = "0.3.1"
@@ -601,6 +643,43 @@ dependencies = [
"riscv-rt-macros",
]
[[package]]
name = "esp-wifi"
version = "0.14.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3700028d3d2ee57e6d2a5c5f60544711052f8d394e73a6f534b538fbfb9d058c"
dependencies = [
"allocator-api2",
"cfg-if",
"critical-section",
"document-features",
"embassy-net-driver",
"embedded-io",
"embedded-io-async",
"enumset",
"esp-alloc",
"esp-build",
"esp-config",
"esp-hal",
"esp-metadata",
"esp-wifi-sys",
"num-derive",
"num-traits",
"portable-atomic",
"portable_atomic_enum",
"rand_core 0.9.3",
"xtensa-lx-rt",
]
[[package]]
name = "esp-wifi-sys"
version = "0.7.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c6b5438361891c431970194a733415006fb3d00b6eb70b3dcb66fd58f04d9b39"
dependencies = [
"anyhow",
]
[[package]]
name = "esp32"
version = "0.37.0"
@@ -783,17 +862,21 @@ name = "keypad-rs"
version = "0.1.0"
dependencies = [
"embassy-executor",
"embassy-net",
"embassy-time",
"embedded-io",
"embedded-io-async",
"esp-alloc",
"esp-backtrace",
"esp-bootloader-esp-idf",
"esp-hal",
"esp-hal-embassy",
"esp-println",
"esp-wifi",
"heapless",
"log",
"smoltcp",
"static_cell",
]
[[package]]
@@ -869,6 +952,17 @@ version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8d5439c4ad607c3c23abf66de8c8bf57ba8adcd1f129e699851a6e43935d339d"
[[package]]
name = "num-derive"
version = "0.4.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ed3955f1a9c7c0c15e092f9c887db08b1fc683305fdf6eb6684f22555355e202"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "num-traits"
version = "0.2.19"
@@ -908,6 +1002,27 @@ version = "1.11.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f84267b20a16ea918e43c6a88433c2d54fa145c92a811b5b047ccbe153674483"
[[package]]
name = "portable_atomic_enum"
version = "0.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "30d48f60c43e0120bb2bb48589a16d4bed2f4b911be41e299f2d0fc0e0e20885"
dependencies = [
"portable-atomic",
"portable_atomic_enum_macros",
]
[[package]]
name = "portable_atomic_enum_macros"
version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a33fa6ec7f2047f572d49317cca19c87195de99c6e5b6ee492da701cfe02b053"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "proc-macro-crate"
version = "3.3.0"

12
Cargo.toml
View File

@@ -17,7 +17,8 @@ esp-println = { version = "0.14.0", features = ["esp32", "log-04"] }
log = { version = "0.4.27" }
esp-alloc = { version = "0.8.0" }
embedded-io = "0.6.1"
# esp-wifi = { version = "0.14.1", features = ["esp32", "wifi"] }
embedded-io-async = { version = "0.6.1" }
esp-wifi = { version = "0.14.1", features = ["esp32", "wifi"] }
heapless = { version = "0.8.0", default-features = false }
smoltcp = { version = "0.12.0", default-features = false, features = [
"medium-ethernet",
@@ -30,11 +31,20 @@ smoltcp = { version = "0.12.0", default-features = false, features = [
"socket-udp",
] }
static_cell = { version = "2.1.0", features = ["nightly"] }
embassy-executor = { version = "0.7", features = ["task-arena-size-20480"] }
embassy-time = { version = "0.4" }
embassy-net = { version = "0.7", features = [
"tcp",
"udp",
"dhcpv4",
"medium-ethernet",
] }
esp-hal-embassy = { version = "0.8.1", features = ["esp32", "executors"] }
esp-bootloader-esp-idf = { version = "0.1" }
[profile.dev]
# Rust debug is too slow.
# For debug builds always builds with some optimization

187
src/main.rs
View File

@@ -1,43 +1,192 @@
//! embassy hello world
//! Embassy DHCP Example
//!
//! This is an example of running the embassy executor with multiple tasks
//! concurrently.
//!
//! Set SSID and PASSWORD env variable before running this example.
//!
//! This gets an ip address via DHCP then performs an HTTP get request to some
//! "random" server
//!
//! Because of the huge task-arena size configured this won't work on ESP32-S2
//% CHIPS: esp32 esp32c2 esp32c3 esp32c6 esp32h2 esp32s2 esp32s3
//% FEATURES: embassy esp-hal/unstable
//% FEATURES: embassy esp-wifi esp-wifi/wifi esp-hal/unstable
//% CHIPS: esp32 esp32s2 esp32s3 esp32c2 esp32c3 esp32c6
#![no_std]
#![no_main]
use embassy_executor::Spawner;
use embassy_net::{Runner, StackResources};
use embassy_time::{Duration, Timer};
use esp_alloc as _;
use esp_backtrace as _;
use esp_hal::timer::timg::TimerGroup;
use esp_hal::{clock::CpuClock, rng::Rng, timer::timg::TimerGroup};
use esp_println::println;
use esp_wifi::{
init,
wifi::{ClientConfiguration, Configuration, WifiController, WifiDevice, WifiEvent, WifiState},
EspWifiController,
};
esp_bootloader_esp_idf::esp_app_desc!();
#[embassy_executor::task]
async fn run() {
loop {
esp_println::println!("Hello world from embassy using esp-hal-async!");
Timer::after(Duration::from_millis(1_000)).await;
}
// When you are okay with using a nightly compiler it's better to use https://docs.rs/static_cell/2.1.0/static_cell/macro.make_static.html
macro_rules! mk_static {
($t:ty,$val:expr) => {{
static STATIC_CELL: static_cell::StaticCell<$t> = static_cell::StaticCell::new();
#[deny(unused_attributes)]
let x = STATIC_CELL.uninit().write(($val));
x
}};
}
const SSID: &str = env!("SSID");
const PASSWORD: &str = env!("PASSWORD");
#[esp_hal_embassy::main]
async fn main(spawner: Spawner) {
async fn main(spawner: Spawner) -> ! {
esp_println::logger::init_logger_from_env();
let peripherals = esp_hal::init(esp_hal::Config::default());
let config = esp_hal::Config::default().with_cpu_clock(CpuClock::max());
let peripherals = esp_hal::init(config);
esp_println::println!("Init!");
esp_alloc::heap_allocator!(size: 72 * 1024);
let timg0 = TimerGroup::new(peripherals.TIMG0);
esp_hal_embassy::init(timg0.timer0);
let mut rng = Rng::new(peripherals.RNG);
spawner.spawn(run()).ok();
let esp_wifi_ctrl = &*mk_static!(
EspWifiController<'static>,
init(timg0.timer0, rng, peripherals.RADIO_CLK).unwrap()
);
let (controller, interfaces) = esp_wifi::wifi::new(esp_wifi_ctrl, peripherals.WIFI).unwrap();
let wifi_interface = interfaces.sta;
let timg1 = TimerGroup::new(peripherals.TIMG1);
esp_hal_embassy::init(timg1.timer0);
let config = embassy_net::Config::dhcpv4(Default::default());
let seed = (rng.random() as u64) << 32 | rng.random() as u64;
// Init network stack
let (stack, runner) = embassy_net::new(
wifi_interface,
config,
mk_static!(StackResources<3>, StackResources::<3>::new()),
seed,
);
spawner.spawn(connection(controller)).ok();
spawner.spawn(net_task(runner)).ok();
loop {
esp_println::println!("Bing!");
Timer::after(Duration::from_millis(5_000)).await;
if stack.is_link_up() {
break;
}
Timer::after(Duration::from_millis(500)).await;
}
println!("Waiting to get IP address...");
loop {
if let Some(config) = stack.config_v4() {
println!("Got IP: {}", config.address);
break;
}
Timer::after(Duration::from_millis(500)).await;
}
loop {
Timer::after(Duration::from_millis(1_000)).await;
// do nothing
}
// let mut rx_buffer = [0; 4096];
// let mut tx_buffer = [0; 4096];
// use core::net::Ipv4Addr;
// use embassy_net::tcp::TcpSocket;
// loop {
// Timer::after(Duration::from_millis(1_000)).await;
// 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 = (Ipv4Addr::new(142, 250, 185, 115), 80);
// println!("connecting...");
// let r = socket.connect(remote_endpoint).await;
// if let Err(e) = r {
// println!("connect error: {:?}", e);
// continue;
// }
// println!("connected!");
// let mut buf = [0; 1024];
// loop {
// use embedded_io_async::Write;
// let r = socket
// .write_all(b"GET / HTTP/1.0\r\nHost: www.mobile-j.de\r\n\r\n")
// .await;
// if let Err(e) = r {
// println!("write error: {:?}", e);
// break;
// }
// let n = match socket.read(&mut buf).await {
// Ok(0) => {
// println!("read EOF");
// break;
// }
// Ok(n) => n,
// Err(e) => {
// println!("read error: {:?}", e);
// break;
// }
// };
// println!("{}", core::str::from_utf8(&buf[..n]).unwrap());
// }
// Timer::after(Duration::from_millis(30000)).await;
// }
}
#[embassy_executor::task]
async fn connection(mut controller: WifiController<'static>) {
println!("start connection task");
println!("Device capabilities: {:?}", controller.capabilities());
loop {
if esp_wifi::wifi::wifi_state() == WifiState::StaConnected {
// wait until we're no longer connected
controller.wait_for_event(WifiEvent::StaDisconnected).await;
Timer::after(Duration::from_millis(5000)).await
}
if !matches!(controller.is_started(), Ok(true)) {
let client_config = Configuration::Client(ClientConfiguration {
ssid: SSID.into(),
password: PASSWORD.into(),
..Default::default()
});
controller.set_configuration(&client_config).unwrap();
println!("Starting wifi");
controller.start_async().await.unwrap();
println!("Wifi started!");
println!("Scan");
let result = controller.scan_n_async(10).await.unwrap();
for ap in result {
println!("{:?}", ap);
}
}
println!("About to connect...");
match controller.connect_async().await {
Ok(_) => println!("Wifi connected!"),
Err(e) => {
println!("Failed to connect to wifi: {e:?}");
Timer::after(Duration::from_millis(5000)).await
}
}
}
}
#[embassy_executor::task]
async fn net_task(mut runner: Runner<'static, WifiDevice<'static>>) {
runner.run().await
}