diff options
Diffstat (limited to 'src/macros.rs')
| -rw-r--r-- | src/macros.rs | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/macros.rs b/src/macros.rs index 512c932..2cf4f89 100644 --- a/src/macros.rs +++ b/src/macros.rs @@ -31,7 +31,10 @@ macro_rules! iprintln { /// at most once in the whole lifetime of the program. /// /// # Notes -/// This macro is unsound on multi core systems. +/// +/// This macro requires a `critical-section` implementation to be set. For most single core systems, +/// you can enable the `critical-section-single-core` feature for this crate. For other systems, you +/// have to provide one from elsewhere, typically your chip's HAL crate. /// /// For debuggability, you can set an explicit name for a singleton. This name only shows up the /// the debugger and is not referencable from other code. See example below. @@ -62,7 +65,7 @@ macro_rules! iprintln { #[macro_export] macro_rules! singleton { ($name:ident: $ty:ty = $expr:expr) => { - $crate::interrupt::free(|_| { + $crate::_export::critical_section::with(|_| { // this is a tuple of a MaybeUninit and a bool because using an Option here is // problematic: Due to niche-optimization, an Option could end up producing a non-zero // initializer value which would move the entire static from `.bss` into `.data`... |