diff options
Diffstat (limited to 'cortex-m-rt')
| -rw-r--r-- | cortex-m-rt/macros/src/lib.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/cortex-m-rt/macros/src/lib.rs b/cortex-m-rt/macros/src/lib.rs index fe0264f..817e9a1 100644 --- a/cortex-m-rt/macros/src/lib.rs +++ b/cortex-m-rt/macros/src/lib.rs @@ -227,7 +227,7 @@ pub fn exception(args: TokenStream, input: TokenStream) -> TokenStream { const SCB_ICSR: *const u32 = 0xE000_ED04 as *const u32; - let irqn = unsafe { core::ptr::read(SCB_ICSR) as u8 as i16 - 16 }; + let irqn = unsafe { (core::ptr::read_volatile(SCB_ICSR) & 0x1FF) as i16 - 16 }; #ident(irqn) } |