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Now handling SysTick as well

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This commit is contained in:
Emil Fresk 2020-12-13 14:52:16 +01:00
parent 0e134a41b5
commit 6277183906
6 changed files with 61 additions and 17 deletions
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32
macros/src/codegen/pre_init.rs
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@ -8,6 +8,8 @@ use crate::{analyze::Analysis, check::Extra, codegen::util};
pub fn codegen(app: &App, analysis: &Analysis, extra: &Extra) -> Vec<TokenStream2> {
let mut stmts = vec![];
let rt_err = util::rt_err_ident();
// Disable interrupts -- `init` must run with interrupts disabled
stmts.push(quote!(rtic::export::interrupt::disable();));
@ -47,14 +49,14 @@ pub fn codegen(app: &App, analysis: &Analysis, extra: &Extra) -> Vec<TokenStream
let interrupt = util::interrupt_ident();
stmts.push(quote!(
core.NVIC.set_priority(
you_must_enable_the_rt_feature_for_the_pac_in_your_cargo_toml::#interrupt::#name,
#rt_err::#interrupt::#name,
rtic::export::logical2hw(#priority, #nvic_prio_bits),
);
));
// NOTE unmask the interrupt *after* setting its priority: changing the priority of a pended
// interrupt is implementation defined
stmts.push(quote!(rtic::export::NVIC::unmask(you_must_enable_the_rt_feature_for_the_pac_in_your_cargo_toml::#interrupt::#name);));
stmts.push(quote!(rtic::export::NVIC::unmask(#rt_err::#interrupt::#name);));
}
// Set exception priorities
@ -83,14 +85,24 @@ pub fn codegen(app: &App, analysis: &Analysis, extra: &Extra) -> Vec<TokenStream
// Compile time assert that this priority is supported by the device
stmts.push(quote!(let _ = [(); ((1 << #nvic_prio_bits) - #priority as usize)];));
// NOTE this also checks that the interrupt exists in the `Interrupt` enumeration
let interrupt = util::interrupt_ident();
stmts.push(quote!(
core.NVIC.set_priority(
you_must_enable_the_rt_feature_for_the_pac_in_your_cargo_toml::#interrupt::#name,
rtic::export::logical2hw(#priority, #nvic_prio_bits),
);
));
if &*name.to_string() == "SysTick" {
stmts.push(quote!(
core.SCB.set_priority(
rtic::export::SystemHandler::SysTick,
rtic::export::logical2hw(#priority, #nvic_prio_bits),
);
));
} else {
// NOTE this also checks that the interrupt exists in the `Interrupt` enumeration
let interrupt = util::interrupt_ident();
stmts.push(quote!(
core.NVIC.set_priority(
#rt_err::#interrupt::#name,
rtic::export::logical2hw(#priority, #nvic_prio_bits),
);
));
}
// NOTE we do not unmask the interrupt as this is part of the monotonic to keep track of
}