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, 4 insertions, 14 deletions

diff --git a/examples/baseline.rs b/examples/baseline.rs
index 73ef4c9..fdf3683 100644
--- a/examples/baseline.rs
+++ b/examples/baseline.rs
@@ -7,26 +7,16 @@
 
 extern crate panic_semihosting;
 
-use cortex_m_semihosting::debug;
+use cortex_m_semihosting::{debug, hprintln};
 use lm3s6965::Interrupt;
 use rtfm::app;
 
-macro_rules! println {
-    ($($tt:tt)*) => {
-        if let Ok(mut stdout) = cortex_m_semihosting::hio::hstdout() {
-            use core::fmt::Write;
-
-            writeln!(stdout, $($tt)*).ok();
-        }
-    };
-}
-
 // NOTE: does NOT properly work on QEMU
 #[app(device = lm3s6965)]
 const APP: () = {
     #[init(spawn = [foo])]
     fn init() {
-        println!("init(baseline = {:?})", start);
+        hprintln!("init(baseline = {:?})", start).unwrap();
 
         // `foo` inherits the baseline of `init`: `Instant(0)`
         spawn.foo().unwrap();
@@ -36,7 +26,7 @@ const APP: () = {
     fn foo() {
         static mut ONCE: bool = true;
 
-        println!("foo(baseline = {:?})", scheduled);
+        hprintln!("foo(baseline = {:?})", scheduled).unwrap();
 
         if *ONCE {
             *ONCE = false;
@@ -49,7 +39,7 @@ const APP: () = {
 
     #[interrupt(spawn = [foo])]
     fn UART0() {
-        println!("UART0(baseline = {:?})", start);
+        hprintln!("UART0(baseline = {:?})", start).unwrap();
 
         // `foo` inherits the baseline of `UART0`: its `start` time
         spawn.foo().unwrap();