feat: init esp32 project

src/bin/main.rs

@@ -0,0 +1,43 @@
+#![no_std]
+#![no_main]
+#![deny(
+    clippy::mem_forget,
+    reason = "mem::forget is generally not safe to do with esp_hal types, especially those \
+    holding buffers for the duration of a data transfer."
+)]
+
+use defmt::info;
+use esp_hal::clock::CpuClock;
+use esp_hal::main;
+use esp_hal::time::{Duration, Instant};
+use esp_hal::timer::timg::TimerGroup;
+use panic_rtt_target as _;
+
+extern crate alloc;
+
+// This creates a default app-descriptor required by the esp-idf bootloader.
+// For more information see: <https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/app_image_format.html#application-description>
+esp_bootloader_esp_idf::esp_app_desc!();
+
+#[main]
+fn main() -> ! {
+    // generator version: 0.5.0
+
+    rtt_target::rtt_init_defmt!();
+
+    let config = esp_hal::Config::default().with_cpu_clock(CpuClock::max());
+    let peripherals = esp_hal::init(config);
+
+    esp_alloc::heap_allocator!(size: 64 * 1024);
+
+    let timg0 = TimerGroup::new(peripherals.TIMG0);
+    let _init = esp_wifi::init(timg0.timer0, esp_hal::rng::Rng::new(peripherals.RNG)).unwrap();
+
+    loop {
+        info!("Hello world!");
+        let delay_start = Instant::now();
+        while delay_start.elapsed() < Duration::from_millis(500) {}
+    }
+
+    // for inspiration have a look at the examples at https://github.com/esp-rs/esp-hal/tree/esp-hal-v1.0.0-rc.0/examples/src/bin
+}

src/lib.rs

@@ -0,0 +1 @@
+#![no_std]

src/main.rs

@@ -1,3 +0,0 @@
-fn main() {
-    println!("Hello, world!");
-}