first commit

src/main.rs

@@ -0,0 +1,40 @@
+#![no_std]
+#![no_main]
+
+extern crate alloc;
+use core::mem::MaybeUninit;
+use esp_backtrace as _;
+use esp_println::println;
+use hal::{clock::ClockControl, peripherals::Peripherals, prelude::*, Delay};
+
+#[global_allocator]
+static ALLOCATOR: esp_alloc::EspHeap = esp_alloc::EspHeap::empty();
+
+fn init_heap() {
+    const HEAP_SIZE: usize = 32 * 1024;
+    static mut HEAP: MaybeUninit<[u8; HEAP_SIZE]> = MaybeUninit::uninit();
+
+    unsafe {
+        ALLOCATOR.init(HEAP.as_mut_ptr() as *mut u8, HEAP_SIZE);
+    }
+}
+#[entry]
+fn main() -> ! {
+    init_heap();
+    let peripherals = Peripherals::take();
+    let system = peripherals.DPORT.split();
+    let clocks = ClockControl::max(system.clock_control).freeze();
+    let mut delay = Delay::new(&clocks);
+
+    // setup logger
+    // To change the log_level change the env section in .cargo/config.toml
+    // or remove it and set ESP_LOGLEVEL manually before running cargo run
+    // this requires a clean rebuild because of https://github.com/rust-lang/cargo/issues/10358
+    esp_println::logger::init_logger_from_env();
+    log::info!("Logger is setup");
+    println!("Hello world!");
+    loop {
+        println!("Loop...");
+        delay.delay_ms(500u32);
+    }
+}