From 78976718e7a380656cc04cf00e83861f486083aa Mon Sep 17 00:00:00 2001
From: Emil Kitti <emil.kitti@outlook.com>
Date: Fri, 26 Jan 2018 18:36:23 +0100
Subject: [PATCH] bare0_2
---
examples/bare0.rs | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/examples/bare0.rs b/examples/bare0.rs
index 80ac35a..4ab8495 100644
--- a/examples/bare0.rs
+++ b/examples/bare0.rs
@@ -6,10 +6,12 @@
// build without the Rust standard library
#![no_std]
+use core::u32;
+
// Minimal runtime / startup for Cortex-M microcontrollers
extern crate cortex_m_rt;
-const X_INIT: u32 = 10;
+const X_INIT: u32 = u32::MAX;
static mut X: u32 = X_INIT;
static mut Y: u32 = 0;
@@ -52,7 +54,16 @@ fn main() {
//
// 2. alter the constant X_INIT so that line 22 directly causes the x to wrap
// what happens when x wraps
-// ** your answer here **
+//
+// (gdb) print x
+// $1 = 4294967295
+// (gdb) next
+//
+// Program received signal SIGTRAP, Trace/breakpoint trap.
+// cortex_m_rt::default_handler (ef=0x20017e68) at /home/kitzin/.cargo/registry/src/github.com-1ecc6299db9ec823/cortex-m-rt-0.3.12/src/lib.rs:454
+// 454 asm::bkpt();
+//
+// An interrupt is triggered!
//
// commit your answers (bare0_2)
//
--
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