From 89160b7cb9b3623e0a50f6745296d470fa7ea79d Mon Sep 17 00:00:00 2001
From: Finomnis <Finomnis@users.noreply.github.com>
Date: Wed, 6 Dec 2023 08:49:38 +0100
Subject: Fix nrf monotonics (#852)

* Fix nrf::timer

* Bootstrap nrf52840-blinky example

* More work on nrf blinky example

* Fix README

* Add asserts for correct timer functionality

* Add correctness check to other monotonics as well

* Update Changelog

* Fix potential timing issues

* Fix race condition in nrf::rtc

* Add changelog

* Add rtc blinky example

* Change rtc example to RC lf clock source

* Add changelog to rtic-time

* Add changelog

* Attempt to fix CI

* Update teensy4-blinky Cargo.lock
---
 examples/nrf52840_blinky/src/bin/blinky_timer.rs | 66 ++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 examples/nrf52840_blinky/src/bin/blinky_timer.rs

(limited to 'examples/nrf52840_blinky/src/bin/blinky_timer.rs')

diff --git a/examples/nrf52840_blinky/src/bin/blinky_timer.rs b/examples/nrf52840_blinky/src/bin/blinky_timer.rs
new file mode 100644
index 0000000..53ccf4e
--- /dev/null
+++ b/examples/nrf52840_blinky/src/bin/blinky_timer.rs
@@ -0,0 +1,66 @@
+#![deny(unsafe_code)]
+#![deny(warnings)]
+#![no_main]
+#![no_std]
+#![feature(type_alias_impl_trait)]
+
+use nrf52840_blinky::hal;
+
+#[rtic::app(device = hal::pac, dispatchers = [SWI0_EGU0])]
+mod app {
+    use super::*;
+
+    use hal::gpio::{Level, Output, Pin, PushPull};
+    use hal::prelude::*;
+
+    use rtic_monotonics::nrf::timer::Timer0 as Mono;
+    use rtic_monotonics::nrf::timer::*;
+    use rtic_monotonics::Monotonic;
+
+    #[shared]
+    struct Shared {}
+
+    #[local]
+    struct Local {
+        led: Pin<Output<PushPull>>,
+    }
+
+    #[init]
+    fn init(cx: init::Context) -> (Shared, Local) {
+        // Initialize Monotonic
+        let token = rtic_monotonics::create_nrf_timer0_monotonic_token!();
+        Mono::start(cx.device.TIMER0, token);
+
+        // Setup LED
+        let port0 = hal::gpio::p0::Parts::new(cx.device.P0);
+        let led = port0.p0_06.into_push_pull_output(Level::Low).degrade();
+
+        // Schedule the blinking task
+        blink::spawn().ok();
+
+        (Shared {}, Local { led })
+    }
+
+    #[task(local = [led])]
+    async fn blink(cx: blink::Context) {
+        let blink::LocalResources { led, .. } = cx.local;
+
+        let mut next_tick = Mono::now();
+        let mut blink_on = false;
+        loop {
+            let now = Mono::now();
+            let now_ms: fugit::SecsDurationU64 = now.duration_since_epoch().convert();
+            defmt::println!("Timer {} ({})", now_ms, now.ticks());
+
+            blink_on = !blink_on;
+            if blink_on {
+                led.set_high().unwrap();
+            } else {
+                led.set_low().unwrap();
+            }
+
+            next_tick += 1000.millis();
+            Mono::delay_until(next_tick).await;
+        }
+    }
+}
-- 
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