firmware/defmt-itm: Raise compile error on armv6m

knurling-rs · Feb 10, 2021 · b94614a · b94614a
1 parent d317f82
commit b94614a
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/firmware/defmt-itm/src/lib.rs b/firmware/defmt-itm/src/lib.rs
@@ -20,6 +20,9 @@ use core::{
 
 use cortex_m::{interrupt, itm, peripheral::ITM, register};
 
+#[cfg(armv6m)]
+compile_error! {"`defmt-itm` cannot be used on Cortex-M0(+) chips, because it requires an ITM peripheral"}
+
 static ENABLED: AtomicBool = AtomicBool::new(false);
 
 /// Enables defmt logging over the ITM stimulus port 0.