embassy hal

hal_test/src/bin/main.rs

@@ -0,0 +1,30 @@
+// src/bin/main.rs
+
+#![no_std]
+#![no_main]
+
+use defmt_rtt as _;
+use embassy_stm32::gpio::{Level, Output, Speed};
+use embassy_stm32::Config;
+use embassy_time::Delay;
+use embedded_hal::delay::DelayNs;
+use panic_probe as _;
+
+#[cortex_m_rt::entry]
+fn main() -> ! {
+    defmt::info!("Starting blinky on STM32U575ZI-Q...");
+
+    // Initialize peripherals with the default clock tree for STM32U5.
+    let p = embassy_stm32::init(Config::default());
+
+    // On‑board LED (PB7 on NUCLEO‑U575ZI‑Q)
+    let mut led = Output::new(p.PB7, Level::Low, Speed::Low);
+    let mut delay = Delay;
+
+    loop {
+        led.set_high();
+        delay.delay_ms(500); // needs embedded_hal::delay::DelayNs in scope
+        led.set_low();
+        delay.delay_ms(500);
+    }
+}

hal_test/src/lib.rs

@@ -0,0 +1,46 @@
+#![no_main]
+#![no_std]
+
+use defmt_rtt as _; // global logger
+
+// TODO(5) adjust HAL import
+// use some_hal as _; // memory layout
+
+use panic_probe as _;
+
+// same panicking *behavior* as `panic-probe` but doesn't print a panic message
+// this prevents the panic message being printed *twice* when `defmt::panic` is invoked
+#[defmt::panic_handler]
+fn panic() -> ! {
+    cortex_m::asm::udf()
+}
+
+/// Terminates the application and makes a semihosting-capable debug tool exit
+/// with status code 0.
+pub fn exit() -> ! {
+    semihosting::process::exit(0);
+}
+
+/// Hardfault handler.
+///
+/// Terminates the application and makes a semihosting-capable debug tool exit
+/// with an error. This seems better than the default, which is to spin in a
+/// loop.
+#[cortex_m_rt::exception]
+unsafe fn HardFault(_frame: &cortex_m_rt::ExceptionFrame) -> ! {
+    semihosting::process::exit(1);
+}
+
+// defmt-test 0.3.0 has the limitation that this `#[tests]` attribute can only be used
+// once within a crate. the module can be in any file but there can only be at most
+// one `#[tests]` module in this library crate
+#[cfg(test)]
+#[defmt_test::tests]
+mod unit_tests {
+    use defmt::assert;
+
+    #[test]
+    fn it_works() {
+        assert!(true)
+    }
+}