Add timer test, add g0, g4 tests.

tests/stm32/src/bin/gpio.rs

@@ -15,6 +15,13 @@ use example_common::*;
 async fn main(_spawner: Spawner, p: Peripherals) {
     info!("Hello World!");
 
+    // Arduino pins D0 and D1
+    // They're connected together with a 1K resistor.
+    #[cfg(feature = "stm32g491re")]
+    let (mut a, mut b) = (p.PC4, p.PC5);
+    #[cfg(feature = "stm32g071rb")]
+    let (mut a, mut b) = (p.PC4, p.PC5);
+    #[cfg(feature = "stm32f429zi")]
     let (mut a, mut b) = (p.PG14, p.PG9);
 
     // Test initial output

tests/stm32/src/bin/timer.rs

@@ -0,0 +1,27 @@
+#![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::time::{Duration, Instant, Timer};
+use embassy_stm32::Peripherals;
+use example_common::*;
+
+#[embassy::main]
+async fn main(_spawner: Spawner, _p: Peripherals) {
+    info!("Hello World!");
+
+    let start = Instant::now();
+    Timer::after(Duration::from_millis(100)).await;
+    let end = Instant::now();
+    let ms = (end - start).as_millis();
+    info!("slept for {} ms", ms);
+    assert!(ms >= 99);
+    assert!(ms < 110);
+
+    info!("Test OK");
+    cortex_m::asm::bkpt();
+}