From a8a02d916210e2cb55152cab5b1af0e6a4ff58b3 Mon Sep 17 00:00:00 2001
From: Jorge Aparicio <jorge@japaric.io>
Date: Fri, 14 Jul 2017 21:53:43 -0500
Subject: [PATCH] v0.2.1

---
 CHANGELOG.md              | 14 ++++++++++
 Cargo.toml                |  4 +--
 src/examples/_5_device.rs | 55 ++++++++++++++++++++++++++++++++-------
 3 files changed, 61 insertions(+), 12 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index dc20855..2392beb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,20 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [v0.2.1] - 2017-07-14
+
+### Added
+
+- Troubleshooting documentation: how to fix the error of overwriting the
+  `.cargo/config` file when you meant to append text to it.
+
+### Changed
+
+- Xargo.toml: Changed the source of the `compiler-builtins` crate from git to
+  the `rust-src` component.
+
+- Expanded the `device` example to do some I/O.
+
 ## [v0.2.0] - 2017-07-07
 
 ### Changed
diff --git a/Cargo.toml b/Cargo.toml
index 4eccd62..5fff40f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ keywords = ["arm", "cortex-m", "template"]
 license = "MIT OR Apache-2.0"
 name = "cortex-m-quickstart"
 repository = "https://github.com/japaric/cortex-m-quickstart"
-version = "0.2.0"
+version = "0.2.1"
 
 [dependencies]
 cortex-m = "0.3.0"
@@ -14,7 +14,7 @@ cortex-m-semihosting = "0.2.0"
 
 [dependencies.cortex-m-rt]
 features = ["abort-on-panic"]
-version = "0.3.2"
+version = "0.3.3"
 
 [profile.release]
 debug = true
diff --git a/src/examples/_5_device.rs b/src/examples/_5_device.rs
index 7a047ff..e0b296a 100644
--- a/src/examples/_5_device.rs
+++ b/src/examples/_5_device.rs
@@ -26,28 +26,57 @@
 //!
 //! ```
 //! 
+//! #![deny(warnings)]
+//! #![feature(const_fn)]
 //! #![no_std]
 //! 
 //! extern crate cortex_m;
+//! extern crate cortex_m_semihosting;
 //! #[macro_use(exception, interrupt)]
 //! extern crate stm32f103xx;
 //! 
-//! use cortex_m::interrupt;
+//! use core::cell::RefCell;
+//! use core::fmt::Write;
+//! 
+//! use cortex_m::interrupt::{self, Mutex};
+//! use cortex_m::peripheral::SystClkSource;
+//! use cortex_m_semihosting::hio::{self, HStdout};
+//! use stm32f103xx::Interrupt;
+//! 
+//! static HSTDOUT: Mutex<RefCell<Option<HStdout>>> =
+//!     Mutex::new(RefCell::new(None));
 //! 
 //! fn main() {
 //!     interrupt::free(|cs| {
-//!         let _gpioa = stm32f103xx::GPIOA.borrow(cs);
-//!         // do something with GPIOA
+//!         let hstdout = HSTDOUT.borrow(cs);
+//!         if let Ok(fd) = hio::hstdout() {
+//!             *hstdout.borrow_mut() = Some(fd);
+//!         }
+//! 
+//!         let nvic = stm32f103xx::NVIC.borrow(cs);
+//!         nvic.enable(Interrupt::TIM2);
+//! 
+//!         let syst = stm32f103xx::SYST.borrow(cs);
+//!         syst.set_clock_source(SystClkSource::Core);
+//!         syst.set_reload(8_000_000); // 1s
+//!         syst.enable_counter();
+//!         syst.enable_interrupt();
 //!     });
 //! }
 //! 
-//! exception!(SYS_TICK, tick, locals: {
-//!     ticks: u32 = 0;
-//! });
+//! exception!(SYS_TICK, tick);
 //! 
-//! fn tick(l: &mut SYS_TICK::Locals) {
-//!     l.ticks += 1;
-//!     // ..
+//! fn tick() {
+//!     interrupt::free(|cs| {
+//!         let hstdout = HSTDOUT.borrow(cs);
+//!         if let Some(hstdout) = hstdout.borrow_mut().as_mut() {
+//!             writeln!(*hstdout, "Tick").ok();
+//!         }
+//! 
+//!         let nvic = stm32f103xx::NVIC.borrow(cs);
+//! 
+//!         nvic.set_pending(Interrupt::TIM2);
+//!     });
 //! }
 //! 
 //! interrupt!(TIM2, tock, locals: {
@@ -56,7 +85,13 @@
 //! 
 //! fn tock(l: &mut TIM2::Locals) {
 //!     l.tocks += 1;
-//!     // ..
+//! 
+//!     interrupt::free(|cs| {
+//!         let hstdout = HSTDOUT.borrow(cs);
+//!         if let Some(hstdout) = hstdout.borrow_mut().as_mut() {
+//!             writeln!(*hstdout, "Tock ({})", l.tocks).ok();
+//!         }
+//!     });
 //! }
 //! ```
 // Auto-generated. Do not modify.