From c7a9b9f3d4b9e71303c7b988d2bd916c2e4df9bc Mon Sep 17 00:00:00 2001
From: Ian McIntyre <ianpmcintyre@gmail.com>
Date: Tue, 2 Aug 2022 06:21:12 -0400
Subject: First commit

---
 examples/blink-blocking.rs | 18 ++++++++++++++++++
 examples/blink-rtic.rs     | 42 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+)
 create mode 100644 examples/blink-blocking.rs
 create mode 100644 examples/blink-rtic.rs

(limited to 'examples')

diff --git a/examples/blink-blocking.rs b/examples/blink-blocking.rs
new file mode 100644
index 0000000..a3a71b9
--- /dev/null
+++ b/examples/blink-blocking.rs
@@ -0,0 +1,18 @@
+//! Slowly blink an LED while blocking on a timer.
+//!
+//! Use this as the minimum-viable runtime support. You don't
+//! need interrupts for this example.
+
+#![no_std]
+#![no_main]
+
+const PIT_PERIOD_US: u32 = 1_000_000;
+
+#[imxrt_rt::entry]
+fn main() -> ! {
+    let board::Resources { mut pit, led, .. } = board::prepare(PIT_PERIOD_US).unwrap();
+    loop {
+        led.toggle();
+        pit.blocking_delay();
+    }
+}
diff --git a/examples/blink-rtic.rs b/examples/blink-rtic.rs
new file mode 100644
index 0000000..04446e3
--- /dev/null
+++ b/examples/blink-rtic.rs
@@ -0,0 +1,42 @@
+//! Slowly blink an LED when a timer interrupt fires.
+//!
+//! This example is a little more complex, and shows that the
+//! vector table is placed and known to the processor.
+
+#![no_std]
+#![no_main]
+
+use imxrt_rt as _;
+
+/// A static that forces this binary to include a .data section.
+/// This is checked in an automated test.
+static mut DATA: u32 = 5;
+
+#[rtic::app(device = board::rtic_support, peripherals = false)]
+mod app {
+    const PIT_PERIOD_US: u32 = 1_000_000;
+
+    #[local]
+    struct Local {
+        led: board::Led,
+        pit: board::Pit,
+    }
+
+    #[shared]
+    struct Shared {}
+
+    #[init]
+    fn init(_: init::Context) -> (Shared, Local, init::Monotonics) {
+        let board::Resources { mut pit, led, .. } = board::prepare(PIT_PERIOD_US).unwrap();
+        pit.loop_with_interrupts();
+        led.set();
+        (Shared {}, Local { led, pit }, init::Monotonics())
+    }
+
+    #[task(binds = PIT, local = [led, pit])]
+    fn pit(cx: pit::Context) {
+        unsafe { crate::DATA += 1 };
+        cx.local.led.toggle();
+        cx.local.pit.clear_interrupts();
+    }
+}
-- 
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