Merge pull request #56 from rust-embedded/ch-interrupts

Finished interrupts chapter

Author: BartMassey

Cargo.toml

@@ -4,13 +4,15 @@ members = [
   "mdbook/src/03-setup",
   "mdbook/src/05-meet-your-software",
   "mdbook/src/06-hello-world",
-  "mdbook/src/07-registers",
-  "mdbook/src/08-led-roulette",
-  "mdbook/src/10-uart",
-  "mdbook/src/11-i2c",
-  "mdbook/src/12-led-compass",
-  "mdbook/src/13-punch-o-meter",
-  "mdbook/src/14-snake-game",
+  "mdbook/src/07-led-roulette",
+  "mdbook/src/08-inputs-and-outputs",
+  "mdbook/src/09-registers",
+  "mdbook/src/11-uart",
+  "mdbook/src/12-i2c",
+  "mdbook/src/13-led-compass",
+  "mdbook/src/14-punch-o-meter",
+  "mdbook/src/15-interrupts",
+  "mdbook/src/16-snake-game",
   "mdbook/src/appendix/3-mag-calibration",
   "mdbook/src/serial-setup",
 ]

mdbook/src/05-meet-your-software/examples/delay-print.rs

@@ -3,7 +3,6 @@
 #![no_std]
 
 use cortex_m_rt::entry;
-use embedded_hal::delay::DelayNs;
 use microbit::board::Board;
 use microbit::hal::timer::Timer;
 use panic_rtt_target as _;