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This commit is contained in:
Jorge Aparicio 2017-07-20 23:03:45 -05:00
parent c7b9507a57
commit 0788a15a39
6 changed files with 49 additions and 31 deletions
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7
src/examples/_4_nested.rs
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@ -65,6 +65,9 @@
//! fn exti0(t: &mut Threshold, r: EXTI0::Resources) {
//! // because this task has a priority of 1 the preemption threshold is also 1
//!
//! let mut low = r.LOW;
//! let mut high = r.HIGH;
//!
//! // A
//! rtfm::bkpt();
//!
@ -72,7 +75,7 @@
//! rtfm::set_pending(Interrupt::EXTI1); // ~> exti1
//!
//! // a claim creates a critical section
//! r.LOW.claim_mut(t, |_low, t| {
//! low.claim_mut(t, |_low, t| {
//! // this claim increases the preemption threshold to 2
//! // just high enough to not race with task `exti1` for access to the
//! // `LOW` resource
@ -92,7 +95,7 @@
//! rtfm::bkpt();
//!
//! // claims can be nested
//! r.HIGH.claim_mut(t, |_high, _| {
//! high.claim_mut(t, |_high, _| {
//! // This claim increases the preemption threshold to 3
//!
//! // now `exti2` can't preempt this task