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Fix shared resource handling and extend example.

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The extended example tests that this actually works this time.
This commit is contained in:
Jonas Schievink 2017-09-22 18:19:18 +02:00
parent 70e243694d
commit 1556948458
2 changed files with 24 additions and 5 deletions
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16
examples/late-resources.rs
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@ -26,13 +26,24 @@ app! {
// the initializer. Doing that will require `init` to return the values of all "late"
// resources.
static IP_ADDRESS: u32;
// PORT is used by 2 tasks, making it a shared resource. This just tests another internal
// code path and is not important for the example.
static PORT: u16;
},
tasks: {
SYS_TICK: {
priority: 1,
path: sys_tick,
resources: [IP_ADDRESS, ON],
resources: [IP_ADDRESS, PORT, ON],
},
EXTI0: {
priority: 2,
path: exti0,
resources: [PORT],
}
}
}
@ -47,6 +58,7 @@ fn init(_p: init::Peripherals, _r: init::Resources) -> init::LateResourceValues
init::LateResourceValues {
// This struct will contain fields for all resources with omitted initializers.
IP_ADDRESS: ip_address,
PORT: 0,
}
}
@ -57,6 +69,8 @@ fn sys_tick(_t: &mut Threshold, r: SYS_TICK::Resources) {
r.IP_ADDRESS;
}
fn exti0(_t: &mut Threshold, _r: EXTI0::Resources) {}
fn idle() -> ! {
loop {
rtfm::wfi();

13
macros/src/trans.rs
View file

@ -351,6 +351,11 @@ fn resources(app: &App, ownerships: &Ownerships, root: &mut Vec<Tokens>) {
Ownership::Shared { ceiling } => {
if let Some(resource) = app.resources.get(name) {
let ty = &resource.ty;
let res_rvalue = if resource.expr.is_some() {
quote!(#_name)
} else {
quote!(#_name.some)
};
impl_items.push(quote! {
type Data = #ty;
@ -361,7 +366,7 @@ fn resources(app: &App, ownerships: &Ownerships, root: &mut Vec<Tokens>) {
) -> &'cs #krate::Static<#ty> {
assert!(t.value() >= #ceiling);
unsafe { #krate::Static::ref_(&#_name) }
unsafe { #krate::Static::ref_(&#res_rvalue) }
}
fn borrow_mut<'cs>(
@ -371,7 +376,7 @@ fn resources(app: &App, ownerships: &Ownerships, root: &mut Vec<Tokens>) {
assert!(t.value() >= #ceiling);
unsafe {
#krate::Static::ref_mut(&mut #_name)
#krate::Static::ref_mut(&mut #res_rvalue)
}
}
@ -387,7 +392,7 @@ fn resources(app: &App, ownerships: &Ownerships, root: &mut Vec<Tokens>) {
{
unsafe {
#krate::claim(
#krate::Static::ref_(&#_name),
#krate::Static::ref_(&#res_rvalue),
#ceiling,
#device::NVIC_PRIO_BITS,
t,
@ -408,7 +413,7 @@ fn resources(app: &App, ownerships: &Ownerships, root: &mut Vec<Tokens>) {
{
unsafe {
#krate::claim(
#krate::Static::ref_mut(&mut #_name),
#krate::Static::ref_mut(&mut #res_rvalue),
#ceiling,
#device::NVIC_PRIO_BITS,
t,