Allow custom `link_section` attributes for late resources

This commit makes RTIC aware of user-provided `link_section` attributes,
letting user override default section mapping.

1 files changed, 8 insertions, 1 deletions

diff --git a/macros/src/codegen/local_resources.rs b/macros/src/codegen/local_resources.rs
index 50621c32..087967f2 100644
--- a/macros/src/codegen/local_resources.rs
+++ b/macros/src/codegen/local_resources.rs
@@ -27,8 +27,15 @@ pub fn codegen(
         let mangled_name = util::static_local_resource_ident(name);
 
         let attrs = &res.attrs;
+
         // late resources in `util::link_section_uninit`
-        let section = util::link_section_uninit();
+        // unless user specifies custom link section
+        let section = if attrs.iter().any(|attr| attr.path.is_ident("link_section")) {
+            None
+        }
+        else {
+            Some(util::link_section_uninit())
+        };
 
         // For future use
         // let doc = format!(" RTIC internal: {}:{}", file!(), line!());