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move some interrupt configuration to pre_init

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This commit is contained in:
Jorge Aparicio 2018-12-15 20:34:33 +01:00
parent f7ac71ab22
commit d14e25d72d
1 changed files with 26 additions and 22 deletions
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48
macros/src/codegen.rs
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@ -142,7 +142,7 @@ pub fn app(app: &App, analysis: &Analysis) -> TokenStream {
let timer_queue = timer_queue(&ctxt, app, analysis);
let pre_init = pre_init(&ctxt, analysis);
let pre_init = pre_init(&ctxt, &app, analysis);
let assertions = assertions(app, analysis);
@ -385,16 +385,6 @@ fn post_init(ctxt: &Context, app: &App, analysis: &Analysis) -> proc_macro2::Tok
// the device into compile errors
let device = &app.args.device;
let nvic_prio_bits = quote!(#device::NVIC_PRIO_BITS);
for (name, interrupt) in &app.interrupts {
let priority = interrupt.args.priority;
exprs.push(quote!(p.NVIC.enable(#device::Interrupt::#name)));
exprs.push(quote!(assert!(#priority <= (1 << #nvic_prio_bits))));
exprs.push(quote!(p.NVIC.set_priority(
#device::Interrupt::#name,
((1 << #nvic_prio_bits) - #priority) << (8 - #nvic_prio_bits),
)));
}
for (name, exception) in &app.exceptions {
let priority = exception.args.priority;
exprs.push(quote!(assert!(#priority <= (1 << #nvic_prio_bits))));
@ -413,16 +403,6 @@ fn post_init(ctxt: &Context, app: &App, analysis: &Analysis) -> proc_macro2::Tok
)));
}
for (priority, dispatcher) in &analysis.dispatchers {
let name = &dispatcher.interrupt;
exprs.push(quote!(p.NVIC.enable(#device::Interrupt::#name)));
exprs.push(quote!(assert!(#priority <= (1 << #nvic_prio_bits))));
exprs.push(quote!(p.NVIC.set_priority(
#device::Interrupt::#name,
((1 << #nvic_prio_bits) - #priority) << (8 - #nvic_prio_bits),
)));
}
if app.idle.is_none() {
// Set SLEEPONEXIT bit to enter sleep mode when returning from ISR
exprs.push(quote!(p.SCB.scr.modify(|r| r | 1 << 1)));
@ -1592,7 +1572,7 @@ fn timer_queue(ctxt: &Context, app: &App, analysis: &Analysis) -> proc_macro2::T
quote!(#(#items)*)
}
fn pre_init(ctxt: &Context, analysis: &Analysis) -> proc_macro2::TokenStream {
fn pre_init(ctxt: &Context, app: &App, analysis: &Analysis) -> proc_macro2::TokenStream {
let mut exprs = vec![];
// FIXME(MaybeUninit) Because we are using a fake MaybeUninit we need to set the Option tag to
@ -1642,6 +1622,30 @@ fn pre_init(ctxt: &Context, analysis: &Analysis) -> proc_macro2::TokenStream {
))
}
// TODO turn the assertions that check that the priority is not larger than what's supported by
// the device into compile errors
let device = &app.args.device;
let nvic_prio_bits = quote!(#device::NVIC_PRIO_BITS);
for (name, interrupt) in &app.interrupts {
let priority = interrupt.args.priority;
exprs.push(quote!(p.NVIC.enable(#device::Interrupt::#name);));
exprs.push(quote!(assert!(#priority <= (1 << #nvic_prio_bits));));
exprs.push(quote!(p.NVIC.set_priority(
#device::Interrupt::#name,
((1 << #nvic_prio_bits) - #priority) << (8 - #nvic_prio_bits),
);));
}
for (priority, dispatcher) in &analysis.dispatchers {
let name = &dispatcher.interrupt;
exprs.push(quote!(p.NVIC.enable(#device::Interrupt::#name);));
exprs.push(quote!(assert!(#priority <= (1 << #nvic_prio_bits));));
exprs.push(quote!(p.NVIC.set_priority(
#device::Interrupt::#name,
((1 << #nvic_prio_bits) - #priority) << (8 - #nvic_prio_bits),
);));
}
// Set the cycle count to 0 and disable it while `init` executes
if cfg!(feature = "timer-queue") {
exprs.push(quote!(p.DWT.ctrl.modify(|r| r & !1);));