stm32: add gpio HIL test

tests/stm32/src/bin/gpio.rs

@@ -0,0 +1,79 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+#[path = "../example_common.rs"]
+mod example_common;
+use defmt::assert;
+use embassy::executor::Spawner;
+use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
+use embassy_stm32::Peripherals;
+use embedded_hal::digital::v2::{InputPin, OutputPin};
+use example_common::*;
+
+#[embassy::main]
+async fn main(_spawner: Spawner, p: Peripherals) {
+    info!("Hello World!");
+
+    let (mut a, mut b) = (p.PG14, p.PG9);
+
+    // Test initial output
+    {
+        let b = Input::new(&mut b, Pull::None);
+
+        {
+            let _a = Output::new(&mut a, Level::Low, Speed::Low);
+            cortex_m::asm::delay(1000);
+            assert!(b.is_low().unwrap());
+        }
+        {
+            let _a = Output::new(&mut a, Level::High, Speed::Low);
+            cortex_m::asm::delay(1000);
+            assert!(b.is_high().unwrap());
+        }
+    }
+
+    // Test input no pull
+    {
+        let b = Input::new(&mut b, Pull::None);
+        // no pull, the status is undefined
+
+        let mut a = Output::new(&mut a, Level::Low, Speed::Low);
+        cortex_m::asm::delay(1000);
+        assert!(b.is_low().unwrap());
+        a.set_high().unwrap();
+        cortex_m::asm::delay(1000);
+        assert!(b.is_high().unwrap());
+    }
+
+    // Test input pulldown
+    {
+        let b = Input::new(&mut b, Pull::Down);
+        cortex_m::asm::delay(1000);
+        assert!(b.is_low().unwrap());
+
+        let mut a = Output::new(&mut a, Level::Low, Speed::Low);
+        cortex_m::asm::delay(1000);
+        assert!(b.is_low().unwrap());
+        a.set_high().unwrap();
+        cortex_m::asm::delay(1000);
+        assert!(b.is_high().unwrap());
+    }
+
+    // Test input pullup
+    {
+        let b = Input::new(&mut b, Pull::Up);
+        cortex_m::asm::delay(1000);
+        assert!(b.is_high().unwrap());
+
+        let mut a = Output::new(&mut a, Level::Low, Speed::Low);
+        cortex_m::asm::delay(1000);
+        assert!(b.is_low().unwrap());
+        a.set_high().unwrap();
+        cortex_m::asm::delay(1000);
+        assert!(b.is_high().unwrap());
+    }
+
+    info!("Test OK");
+    cortex_m::asm::bkpt();
+}

tests/stm32/src/example_common.rs

@@ -0,0 +1,17 @@
+#![macro_use]
+
+use defmt_rtt as _; // global logger
+use panic_probe as _;
+
+pub use defmt::*;
+
+use core::sync::atomic::{AtomicUsize, Ordering};
+
+defmt::timestamp! {"{=u64}", {
+        static COUNT: AtomicUsize = AtomicUsize::new(0);
+        // NOTE(no-CAS) `timestamps` runs with interrupts disabled
+        let n = COUNT.load(Ordering::Relaxed);
+        COUNT.store(n + 1, Ordering::Relaxed);
+        n as u64
+    }
+}