Ditch lazy_static use in favor of embassy_sync::once_lock

Cargo.toml

@@ -17,9 +17,6 @@ heapless = { version = "0.7", default-features = false }
 futures = { version = "0.3", default-features = false, features = [
     "async-await",
 ] }
-lazy_static = { version = "1.5.0", default-features = false, features = [
-    "spin_no_std",
-] }
 embassy-sync = { git = "https://github.com/jucr-io/embassy/" }
 embassy-executor = { git = "https://github.com/jucr-io/embassy/", features = [
     "task-arena-size-32768",

README.md

@@ -153,7 +153,6 @@ The `controller` macro will generated the following for you:
 The `controller` macro assumes that you have the following dependencies in your `Cargo.toml`:
 
 * `futures` with `async-await` feature enabled.
-* `lazy_static` with either the default feature or `spin_no_std` feature enabled.
 * `embassy-sync`
 
 ## Known limitations

src/controller/item_impl.rs

@@ -376,17 +376,15 @@ impl Signal {
                     #max_publishers,
                 > = embassy_sync::pubsub::PubSubChannel::new();
 
-            lazy_static::lazy_static! {
-                static ref #args_publisher_name: embassy_sync::pubsub::publisher::Publisher<
-                    'static,
-                    embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex,
-                    #args_struct_name,
-                    #capacity,
-                    #max_subscribers,
-                    #max_publishers,
-                    // Safety: The publisher is only initialized once.
-                > = embassy_sync::pubsub::PubSubChannel::publisher(&#args_channel_name).unwrap();
-            }
+            static #args_publisher_name: embassy_sync::once_lock::OnceLock<embassy_sync::pubsub::publisher::Publisher<
+                'static,
+                embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex,
+                #args_struct_name,
+                #capacity,
+                #max_subscribers,
+                #max_publishers,
+                // Safety: The publisher is only initialized once.
+            >> = embassy_sync::once_lock::OnceLock::new();
 
             #[derive(Debug, Clone)]
             pub struct #args_struct_name {
@@ -426,8 +424,12 @@ impl Signal {
         };
 
         method.block = parse_quote!({
-            embassy_sync::pubsub::publisher::Pub::publish(
+            let publisher = embassy_sync::once_lock::OnceLock::get_or_init(
                 &#args_publisher_name,
+                // Safety: The publisher is only initialized once.
+                || embassy_sync::pubsub::PubSubChannel::publisher(&#args_channel_name).unwrap());
+            embassy_sync::pubsub::publisher::Pub::publish(
+                publisher,
                 #args_struct_name { #(#names),* },
             ).await;
         });