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stm32: fix refcounts for usart, spi, and i2c

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This commit is contained in:
xoviat
2023-09-04 15:47:33 -05:00
parent 3466c9cfa9
commit 274f63a879
7 changed files with 60 additions and 17 deletions
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18
embassy-stm32/build.rs
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@ -347,9 +347,7 @@ fn main() {
TokenStream::new()
};
let ptype = p
.name
.replace(&['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'][..], "");
let ptype = p.name.replace(|c| char::is_numeric(c), "");
let pname = format_ident!("{}", p.name);
let clk = format_ident!("{}", rcc.clock.to_ascii_lowercase());
let en_reg = format_ident!("{}", en.register.to_ascii_lowercase());
@ -363,16 +361,14 @@ fn main() {
(
quote! {
use atomic_polyfill::Ordering;
if refcount_statics::#refcount_static.fetch_add(1, Ordering::SeqCst) > 0 {
unsafe { refcount_statics::#refcount_static += 1 };
if unsafe { refcount_statics::#refcount_static } > 1 {
return;
}
},
quote! {
use atomic_polyfill::Ordering;
if refcount_statics::#refcount_static.fetch_sub(1, Ordering::SeqCst) > 1 {
unsafe { refcount_statics::#refcount_static -= 1 };
if unsafe { refcount_statics::#refcount_static } > 0 {
return;
}
},
@ -416,14 +412,12 @@ fn main() {
let mut refcount_mod = TokenStream::new();
for refcount_static in refcount_statics {
refcount_mod.extend(quote! {
pub(crate) static #refcount_static: AtomicU8 = AtomicU8::new(0);
pub(crate) static mut #refcount_static: u8 = 0;
});
}
g.extend(quote! {
mod refcount_statics {
use atomic_polyfill::AtomicU8;
#refcount_mod
}
});