Initial commit

Signed-off-by: Thomas Klaehn <thomas.klaehn@perinet.io>

lp-core/src/main.rs

@@ -0,0 +1,35 @@
+//! Counts a 32 bit value at a known point in memory, and blink GPIO1.
+//!
+//! When using the ESP32-C6's LP core, this address in memory is `0x5000_2000`.
+//!
+//! Make sure the LP RAM is cleared before loading the code.
+
+#![no_std]
+#![no_main]
+
+use embedded_hal::{delay::DelayNs, digital::OutputPin};
+use esp_lp_hal::{delay::Delay, gpio::Output, prelude::*};
+use panic_halt as _;
+
+const ADDRESS: u32 = 0x5000_2000;
+
+
+#[entry]
+fn main(mut gpio1: Output<1>) -> ! {
+    let mut i: u32 = 0;
+
+    let ptr = ADDRESS as *mut u32;
+
+    loop {
+        i = i.wrapping_add(1u32);
+        unsafe {
+            ptr.write_volatile(i);
+        }
+
+        gpio1.set_high().unwrap();
+        Delay.delay_ms(500);
+
+        gpio1.set_low().unwrap();
+        Delay.delay_ms(500);
+    }
+}