Initial commit

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

hp-core/src/main.rs

@@ -0,0 +1,52 @@
+//! This shows a very basic example of running code on the LP core.
+//!
+//! Code on LP core increments a counter and continuously toggles LED. The
+//! current value is printed by the HP core.
+//!
+//! Make sure to first compile the `esp-lp-hal/examples/blinky.rs` example
+//!
+//! The following wiring is assumed:
+//! - LED => GPIO1
+
+//% CHIPS: esp32c6
+//% FEATURES: esp-hal/unstable
+
+#![no_std]
+#![no_main]
+
+use esp_backtrace as _;
+use esp_hal::{
+    gpio::lp_io::LowPowerOutput,
+    load_lp_code,
+    lp_core::{LpCore, LpCoreWakeupSource},
+    main,
+};
+use esp_println::{print, println};
+
+#[main]
+fn main() -> ! {
+    let peripherals = esp_hal::init(esp_hal::Config::default());
+
+    // configure GPIO 1 as LP output pin
+
+    let lp_pin = LowPowerOutput::new(peripherals.GPIO1);
+
+    let mut lp_core = LpCore::new(peripherals.LP_CORE);
+    lp_core.stop();
+    println!("lp core stopped");
+
+    // load code to LP core
+    let lp_core_code =
+        load_lp_code!("./target/riscv32imac-unknown-none-elf/release/lp-core");
+
+    // start LP core
+    lp_core_code.run(&mut lp_core, LpCoreWakeupSource::HpCpu, lp_pin);
+    println!("lpcore run");
+
+    let data = (0x5000_2000) as *mut u32;
+    loop {
+        print!("Current {:x}           \u{000d}", unsafe {
+            data.read_volatile()
+        });
+    }
+}