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Write the flag sooner with a known value

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This commit is contained in:
Dion Dokter 2024-12-25 22:54:48 +01:00
parent 92a489b6a1
commit 595ce48eb2
1 changed files with 5 additions and 0 deletions
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5
embassy-stm32/src/lib.rs
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@ -350,6 +350,11 @@ mod dual_core {
pub fn init_primary(config: Config, shared_data: &'static MaybeUninit<SharedData>) -> Peripherals {
let shared_data = unsafe { shared_data.assume_init_ref() };
// Write the flag as soon as possible. Reading this flag uninitialized in the `init_secondary`
// is maybe unsound? Unclear. If it is indeed unsound, writing it sooner doesn't fix it all,
// but improves the odds of it going right
shared_data.init_flag.store(0, Ordering::SeqCst);
rcc::set_freqs_ptr(shared_data.clocks.get());
let p = init_hw(config);