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-rw-r--r--examples/lock.rs12
1 files changed, 8 insertions, 4 deletions
diff --git a/examples/lock.rs b/examples/lock.rs
index c4930a28..2fbf7608 100644
--- a/examples/lock.rs
+++ b/examples/lock.rs
@@ -52,11 +52,15 @@ mod app {
}
#[task(binds = GPIOB, priority = 2, resources = [shared])]
- fn gpiob(c: gpiob::Context) {
- // the higher priority task does *not* need a critical section
- *c.resources.shared += 1;
+ fn gpiob(mut c: gpiob::Context) {
+ // the higher priority task does still need a critical section
+ let shared = c.resources.shared.lock(|shared| {
+ *shared += 1;
+
+ *shared
+ });
- hprintln!("D - shared = {}", *c.resources.shared).unwrap();
+ hprintln!("D - shared = {}", shared).unwrap();
}
#[task(binds = GPIOC, priority = 3)]