Merge #694

694: RTIC 2 r=AfoHT a=korken89



Co-authored-by: Emil Fresk <emil.fresk@gmail.com>
Co-authored-by: Per Lindgren <per.lindgren@ltu.se>

1 files changed, 47 insertions, 0 deletions

diff --git a/rtic-macros/src/codegen/post_init.rs b/rtic-macros/src/codegen/post_init.rs
new file mode 100644
index 00000000..c4e53837
--- /dev/null
+++ b/rtic-macros/src/codegen/post_init.rs
@@ -0,0 +1,47 @@
+use crate::{analyze::Analysis, codegen::util, syntax::ast::App};
+use proc_macro2::TokenStream as TokenStream2;
+use quote::quote;
+
+/// Generates code that runs after `#[init]` returns
+pub fn codegen(app: &App, analysis: &Analysis) -> Vec<TokenStream2> {
+    let mut stmts = vec![];
+
+    // Initialize shared resources
+    for (name, res) in &app.shared_resources {
+        let mangled_name = util::static_shared_resource_ident(name);
+        // If it's live
+        let cfgs = res.cfgs.clone();
+        if analysis.shared_resources.get(name).is_some() {
+            stmts.push(quote!(
+                // We include the cfgs
+                #(#cfgs)*
+                // Resource is a RacyCell<MaybeUninit<T>>
+                // - `get_mut` to obtain a raw pointer to `MaybeUninit<T>`
+                // - `write` the defined value for the late resource T
+                #mangled_name.get_mut().write(core::mem::MaybeUninit::new(shared_resources.#name));
+            ));
+        }
+    }
+
+    // Initialize local resources
+    for (name, res) in &app.local_resources {
+        let mangled_name = util::static_local_resource_ident(name);
+        // If it's live
+        let cfgs = res.cfgs.clone();
+        if analysis.local_resources.get(name).is_some() {
+            stmts.push(quote!(
+                // We include the cfgs
+                #(#cfgs)*
+                // Resource is a RacyCell<MaybeUninit<T>>
+                // - `get_mut` to obtain a raw pointer to `MaybeUninit<T>`
+                // - `write` the defined value for the late resource T
+                #mangled_name.get_mut().write(core::mem::MaybeUninit::new(local_resources.#name));
+            ));
+        }
+    }
+
+    // Enable the interrupts -- this completes the `init`-ialization phase
+    stmts.push(quote!(rtic::export::interrupt::enable();));
+
+    stmts
+}