esp_hal_embassy: Implement timer conversion for some arrays

esp-hal-embassy/CHANGELOG.md

@@ -14,7 +14,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Updated to latest release (`0.6.0`) for `embassy-executor` (#1942)
-- Changed `init` to accept timers of multiple types (#1957)
+- Changed `init` to accept timers of multiple types (#1957, #2012)
 
 ### Fixed
 

esp-hal-embassy/src/lib.rs

@@ -121,6 +121,23 @@ impl<const N: usize> TimerCollection for &'static mut [Timer; N] {
     }
 }
 
+macro_rules! impl_array {
+    ($n:literal) => {
+        impl<T> TimerCollection for [T; $n]
+        where
+            T: IntoErasedTimer,
+        {
+            fn timers(self) -> &'static mut [Timer] {
+                mk_static!([Timer; $n], self.map(|t| Timer::new(t.into())))
+            }
+        }
+    };
+}
+
+impl_array!(2);
+impl_array!(3);
+impl_array!(4);
+
 /// Initialize embassy.
 ///
 /// Call this as soon as possible, before the first timer-related operation.
@@ -133,6 +150,7 @@ impl<const N: usize> TimerCollection for &'static mut [Timer; N] {
 /// - A `OneShotTimer` instance
 /// - A mutable static slice of `OneShotTimer` instances
 /// - A mutable static array of `OneShotTimer` instances
+/// - A 2, 3, 4 element array of `ErasedTimer` instances
 ///
 /// # Examples
 ///

examples/src/bin/embassy_multicore.rs

@@ -25,24 +25,14 @@ use esp_hal::{
     gpio::{AnyOutput, Io, Level},
     peripherals::Peripherals,
     system::SystemControl,
-    timer::{timg::TimerGroup, ErasedTimer, OneShotTimer},
+    timer::{timg::TimerGroup, ErasedTimer},
 };
 use esp_hal_embassy::Executor;
 use esp_println::println;
 use static_cell::StaticCell;
 
 static mut APP_CORE_STACK: Stack<8192> = Stack::new();
 
-// When you are okay with using a nightly compiler it's better to use https://docs.rs/static_cell/2.1.0/static_cell/macro.make_static.html
-macro_rules! mk_static {
-    ($t:ty,$val:expr) => {{
-        static STATIC_CELL: static_cell::StaticCell<$t> = static_cell::StaticCell::new();
-        #[deny(unused_attributes)]
-        let x = STATIC_CELL.uninit().write(($val));
-        x
-    }};
-}
-
 /// Waits for a message that contains a duration, then flashes a led for that
 /// duration of time.
 #[embassy_executor::task]
@@ -73,9 +63,7 @@ async fn main(_spawner: Spawner) {
     let timg0 = TimerGroup::new(peripherals.TIMG0, &clocks);
     let timer0: ErasedTimer = timg0.timer0.into();
     let timer1: ErasedTimer = timg0.timer1.into();
-    let timers = [OneShotTimer::new(timer0), OneShotTimer::new(timer1)];
-    let timers = mk_static!([OneShotTimer<ErasedTimer>; 2], timers);
-    esp_hal_embassy::init(&clocks, timers);
+    esp_hal_embassy::init(&clocks, [timer0, timer1]);
 
     let mut cpu_control = CpuControl::new(peripherals.CPU_CTRL);
 

examples/src/bin/embassy_multicore_interrupt.rs

@@ -26,24 +26,14 @@ use esp_hal::{
     peripherals::Peripherals,
     prelude::*,
     system::SystemControl,
-    timer::{timg::TimerGroup, ErasedTimer, OneShotTimer},
+    timer::{timg::TimerGroup, ErasedTimer},
 };
 use esp_hal_embassy::InterruptExecutor;
 use esp_println::println;
 use static_cell::StaticCell;
 
 static mut APP_CORE_STACK: Stack<8192> = Stack::new();
 
-// When you are okay with using a nightly compiler it's better to use https://docs.rs/static_cell/2.1.0/static_cell/macro.make_static.html
-macro_rules! mk_static {
-    ($t:ty,$val:expr) => {{
-        static STATIC_CELL: static_cell::StaticCell<$t> = static_cell::StaticCell::new();
-        #[deny(unused_attributes)]
-        let x = STATIC_CELL.uninit().write(($val));
-        x
-    }};
-}
-
 /// Waits for a message that contains a duration, then flashes a led for that
 /// duration of time.
 #[embassy_executor::task]
@@ -93,9 +83,7 @@ fn main() -> ! {
     let timg0 = TimerGroup::new(peripherals.TIMG0, &clocks);
     let timer0: ErasedTimer = timg0.timer0.into();
     let timer1: ErasedTimer = timg0.timer1.into();
-    let timers = [OneShotTimer::new(timer0), OneShotTimer::new(timer1)];
-    let timers = mk_static!([OneShotTimer<ErasedTimer>; 2], timers);
-    esp_hal_embassy::init(&clocks, timers);
+    esp_hal_embassy::init(&clocks, [timer0, timer1]);
 
     let mut cpu_control = CpuControl::new(peripherals.CPU_CTRL);
 

examples/src/bin/embassy_multiprio.rs

@@ -28,22 +28,12 @@ use esp_hal::{
     interrupt::Priority,
     peripherals::Peripherals,
     system::SystemControl,
-    timer::{timg::TimerGroup, ErasedTimer, OneShotTimer},
+    timer::{timg::TimerGroup, ErasedTimer},
 };
 use esp_hal_embassy::InterruptExecutor;
 use esp_println::println;
 use static_cell::StaticCell;
 
-// When you are okay with using a nightly compiler it's better to use https://docs.rs/static_cell/2.1.0/static_cell/macro.make_static.html
-macro_rules! mk_static {
-    ($t:ty,$val:expr) => {{
-        static STATIC_CELL: static_cell::StaticCell<$t> = static_cell::StaticCell::new();
-        #[deny(unused_attributes)]
-        let x = STATIC_CELL.uninit().write(($val));
-        x
-    }};
-}
-
 /// Periodically print something.
 #[embassy_executor::task]
 async fn high_prio() {
@@ -89,23 +79,19 @@ async fn main(low_prio_spawner: Spawner) {
 
     let timg0 = TimerGroup::new(peripherals.TIMG0, &clocks);
     let timer0: ErasedTimer = timg0.timer0.into();
-    let timer0 = OneShotTimer::new(timer0);
 
     cfg_if::cfg_if! {
         if #[cfg(feature = "esp32c2")] {
             use esp_hal::timer::systimer::{SystemTimer, Target};
             let systimer = SystemTimer::new(peripherals.SYSTIMER).split::<Target>();
-            let alarm0: ErasedTimer = systimer.alarm0.into();
-            let timer1 = OneShotTimer::new(alarm0);
+            let timer1: ErasedTimer = systimer.alarm0.into();
         } else {
             let timg1 = TimerGroup::new(peripherals.TIMG1, &clocks);
             let timer1: ErasedTimer = timg1.timer0.into();
-            let timer1 = OneShotTimer::new(timer1);
         }
     }
 
-    let timers = mk_static!([OneShotTimer<ErasedTimer>; 2], [timer0, timer1]);
-    esp_hal_embassy::init(&clocks, timers);
+    esp_hal_embassy::init(&clocks, [timer0, timer1]);
 
     static EXECUTOR: StaticCell<InterruptExecutor<2>> = StaticCell::new();
     let executor = InterruptExecutor::new(system.software_interrupt_control.software_interrupt2);

hil-test/tests/gpio.rs

@@ -20,7 +20,7 @@ use esp_hal::{
     macros::handler,
     peripherals::Peripherals,
     system::SystemControl,
-    timer::{timg::TimerGroup, ErasedTimer, OneShotTimer},
+    timer::timg::TimerGroup,
     InterruptConfigurable,
 };
 use hil_test as _;

hil-test/tests/usb_serial_jtag.rs

@@ -12,32 +12,19 @@ mod tests {
         clock::ClockControl,
         peripherals::Peripherals,
         system::SystemControl,
-        timer::{timg::TimerGroup, ErasedTimer, OneShotTimer},
+        timer::timg::TimerGroup,
         usb_serial_jtag::UsbSerialJtag,
     };
     use hil_test as _;
 
-    // When you are okay with using a nightly compiler it's better to use https://docs.rs/static_cell/2.1.0/static_cell/macro.make_static.html
-    macro_rules! mk_static {
-        ($t:ty,$val:expr) => {{
-            static STATIC_CELL: static_cell::StaticCell<$t> = static_cell::StaticCell::new();
-            #[deny(unused_attributes)]
-            let x = STATIC_CELL.uninit().write(($val));
-            x
-        }};
-    }
-
     #[test]
     fn creating_peripheral_does_not_break_debug_connection() {
         let peripherals = Peripherals::take();
         let system = SystemControl::new(peripherals.SYSTEM);
         let clocks = ClockControl::boot_defaults(system.clock_control).freeze();
 
         let timg0 = TimerGroup::new(peripherals.TIMG0, &clocks);
-        let timer0: ErasedTimer = timg0.timer0.into();
-        let timers = [OneShotTimer::new(timer0)];
-        let timers = mk_static!([OneShotTimer<ErasedTimer>; 1], timers);
-        esp_hal_embassy::init(&clocks, timers);
+        esp_hal_embassy::init(&clocks, timg0.timer0);
 
         _ = UsbSerialJtag::new_async(peripherals.USB_DEVICE).split();
     }