Fixed so examples do not crash in release mode

examples/binds.rs

@@ -27,7 +27,9 @@ const APP: () = {
 
         debug::exit(debug::EXIT_SUCCESS);
 
-        loop {}
+        loop {
+            cortex_m::asm::nop();
+        }
     }
 
     #[task(binds = UART0)]

examples/cfg.rs

@@ -28,7 +28,9 @@ const APP: () = {
     fn idle(_: idle::Context) -> ! {
         debug::exit(debug::EXIT_SUCCESS);
 
-        loop {}
+        loop {
+            cortex_m::asm::nop();
+        }
     }
 
     #[task(capacity = 2, resources = [count], spawn = [log])]

examples/hardware.rs

@@ -30,7 +30,9 @@ const APP: () = {
 
         debug::exit(debug::EXIT_SUCCESS);
 
-        loop {}
+        loop {
+            cortex_m::asm::nop();
+        }
     }
 
     #[task(binds = UART0)]

examples/idle.rs

@@ -26,6 +26,8 @@ const APP: () = {
 
         debug::exit(debug::EXIT_SUCCESS);
 
-        loop {}
+        loop {
+            cortex_m::asm::nop();
+        }
     }
 };

examples/resource.rs

@@ -31,7 +31,9 @@ const APP: () = {
         // error: no `resources` field in `idle::Context`
         // _cx.resources.shared += 1;
 
-        loop {}
+        loop {
+            cortex_m::asm::nop();
+        }
     }
 
     // `shared` can be accessed from this context

examples/t-cfg-resources.rs

@@ -31,6 +31,8 @@ const APP: () = {
 
     #[idle]
     fn idle(_cx: idle::Context) -> ! {
-        loop {}
+        loop {
+            cortex_m::asm::nop();
+        }
     }
 };

examples/t-cfg.rs

@@ -24,7 +24,9 @@ const APP: () = {
         #[cfg(never)]
         static mut BAR: u32 = 0;
 
-        loop {}
+        loop {
+            cortex_m::asm::nop();
+        }
     }
 
     #[task(resources = [foo], schedule = [quux], spawn = [quux])]

examples/t-idle-main.rs

@@ -14,6 +14,8 @@ const APP: () = {
     #[idle]
     fn main(_: main::Context) -> ! {
         debug::exit(debug::EXIT_SUCCESS);
-        loop {}
+        loop {
+            cortex_m::asm::nop();
+        }
     }
 };

examples/t-late-not-send.rs

@@ -31,6 +31,8 @@ const APP: () = {
 
     #[idle(resources = [x, y])]
     fn idle(_: idle::Context) -> ! {
-        loop {}
+        loop {
+            cortex_m::asm::nop();
+        }
     }
 };

examples/t-resource.rs

@@ -58,7 +58,9 @@ const APP: () = {
         // `&` if read-only
         let _: &u32 = c.resources.s3;
 
-        loop {}
+        loop {
+            cortex_m::asm::nop();
+        }
     }
 
     #[task(binds = UART0, resources = [o3, s1, s2, &s3])]

examples/t-schedule.rs

@@ -23,7 +23,9 @@ const APP: () = {
         let _: Result<(), u32> = c.schedule.bar(Instant::now() + 50.cycles(), 0);
         let _: Result<(), (u32, u32)> = c.schedule.baz(Instant::now() + 60.cycles(), 0, 1);
 
-        loop {}
+        loop {
+            cortex_m::asm::nop();
+        }
     }
 
     #[task(binds = SVCall, schedule = [foo, bar, baz])]

examples/t-spawn.rs

@@ -22,7 +22,9 @@ const APP: () = {
         let _: Result<(), u32> = c.spawn.bar(0);
         let _: Result<(), (u32, u32)> = c.spawn.baz(0, 1);
 
-        loop {}
+        loop {
+            cortex_m::asm::nop();
+        }
     }
 
     #[task(binds = SVCall, spawn = [foo, bar, baz])]

examples/types.rs

@@ -32,7 +32,9 @@ const APP: () = {
         let _: idle::Schedule = cx.schedule;
         let _: idle::Spawn = cx.spawn;
 
-        loop {}
+        loop {
+            cortex_m::asm::nop();
+        }
     }
 
     #[task(binds = UART0, resources = [shared], schedule = [foo], spawn = [foo])]