diff options
Diffstat (limited to 'examples/lock.rs')
| -rw-r--r-- | examples/lock.rs | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/examples/lock.rs b/examples/lock.rs index 17b6a58b..f33a60a4 100644 --- a/examples/lock.rs +++ b/examples/lock.rs @@ -11,7 +11,10 @@ use panic_semihosting as _; #[rtfm::app(device = lm3s6965)] const APP: () = { - static mut SHARED: u32 = 0; + struct Resources { + #[init(0)] + shared: u32, + } #[init] fn init(_: init::Context) { @@ -19,21 +22,21 @@ const APP: () = { } // when omitted priority is assumed to be `1` - #[task(binds = GPIOA, resources = [SHARED])] + #[task(binds = GPIOA, resources = [shared])] fn gpioa(mut c: gpioa::Context) { hprintln!("A").unwrap(); // the lower priority task requires a critical section to access the data - c.resources.SHARED.lock(|shared| { + c.resources.shared.lock(|shared| { // data can only be modified within this critical section (closure) *shared += 1; // GPIOB will *not* run right now due to the critical section rtfm::pend(Interrupt::GPIOB); - hprintln!("B - SHARED = {}", *shared).unwrap(); + hprintln!("B - shared = {}", *shared).unwrap(); - // GPIOC does not contend for `SHARED` so it's allowed to run now + // GPIOC does not contend for `shared` so it's allowed to run now rtfm::pend(Interrupt::GPIOC); }); @@ -44,12 +47,12 @@ const APP: () = { debug::exit(debug::EXIT_SUCCESS); } - #[task(binds = GPIOB, priority = 2, resources = [SHARED])] + #[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; + *c.resources.shared += 1; - hprintln!("D - SHARED = {}", *c.resources.SHARED).unwrap(); + hprintln!("D - shared = {}", *c.resources.shared).unwrap(); } #[task(binds = GPIOC, priority = 3)] |