1 files changed, 9 insertions, 2 deletions
diff --git a/macros/src/codegen/assertions.rs b/macros/src/codegen/assertions.rs
index 95268a2c..4a77352f 100644
--- a/macros/src/codegen/assertions.rs
+++ b/macros/src/codegen/assertions.rs
@@ -1,10 +1,10 @@
 use proc_macro2::TokenStream as TokenStream2;
 use quote::quote;
 
-use crate::analyze::Analysis;
+use crate::{analyze::Analysis, check::Extra};
 
 /// Generates compile-time assertions that check that types implement the `Send` / `Sync` traits
-pub fn codegen(core: u8, analysis: &Analysis) -> Vec<TokenStream2> {
+pub fn codegen(core: u8, analysis: &Analysis, extra: &Extra) -> Vec<TokenStream2> {
     let mut stmts = vec![];
 
     // we don't generate *all* assertions on all cores because the user could conditionally import a
@@ -22,5 +22,12 @@ pub fn codegen(core: u8, analysis: &Analysis) -> Vec<TokenStream2> {
         }
     }
 
+    // if the `schedule` API is used in more than one core then we need to check that the
+    // `monotonic` timer can be used in multi-core context
+    if analysis.timer_queues.len() > 1 && analysis.timer_queues.contains_key(&core) {
+        let monotonic = extra.monotonic();
+        stmts.push(quote!(rtfm::export::assert_multicore::<#monotonic>();));
+    }
+
     stmts
 }