Merge #99

99: impl Mutex on all shared resources r=japaric a=japaric

document how to write generic code that operates on resources

Co-authored-by: Jorge Aparicio <jorge@japaric.io>

1 files changed, 2 insertions, 11 deletions

diff --git a/examples/periodic.rs b/examples/periodic.rs
index 0fb8bdf..ba2b493 100644
--- a/examples/periodic.rs
+++ b/examples/periodic.rs
@@ -7,18 +7,9 @@
 
 extern crate panic_semihosting;
 
+use cortex_m_semihosting::hprintln;
 use rtfm::{app, Instant};
 
-macro_rules! println {
-    ($($tt:tt)*) => {
-        if let Ok(mut stdout) = cortex_m_semihosting::hio::hstdout() {
-            use core::fmt::Write;
-
-            writeln!(stdout, $($tt)*).ok();
-        }
-    };
-}
-
 const PERIOD: u32 = 8_000_000;
 
 // NOTE: does NOT work on QEMU!
@@ -32,7 +23,7 @@ const APP: () = {
     #[task(schedule = [foo])]
     fn foo() {
         let now = Instant::now();
-        println!("foo(scheduled = {:?}, now = {:?})", scheduled, now);
+        hprintln!("foo(scheduled = {:?}, now = {:?})", scheduled, now).unwrap();
 
         schedule.foo(scheduled + PERIOD.cycles()).unwrap();
     }