From 777260cf214c573e8a88492f2240964480a051e7 Mon Sep 17 00:00:00 2001
From: Camil Staps
Date: Mon, 23 Aug 2021 10:40:59 +0200
Subject: Add links to relevant code to article about testing Arduino code with
 QuickCheck

---
 ...-09-07-testing-arduino-code-with-haskell-quickcheck.md | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/resources/md/2021-09-07-testing-arduino-code-with-haskell-quickcheck.md b/resources/md/2021-09-07-testing-arduino-code-with-haskell-quickcheck.md
index 647da97..6598aed 100644
--- a/resources/md/2021-09-07-testing-arduino-code-with-haskell-quickcheck.md
+++ b/resources/md/2021-09-07-testing-arduino-code-with-haskell-quickcheck.md
@@ -4,14 +4,17 @@ computer, and used [Haskell][] [QuickCheck][] to run automated property tests
 against it. With that set up, fixing the bug was a matter of minutes. This
 article assumes basic knowledge of both Arduino and Haskell.*
 
+The Arduino code is [on GitHub][ATSAMF-source], and here is [the comparison of
+the changes made for this article][diff].
+
 [[toc]]
 
 # Background
 
-A friend of mine (Rick PA5NN) built a morse code transceiver, the [ATSAMF][],
-and I wrote the Arduino software for it. Part of the software is the keyer
-routine, which translates the input of a [dual-lever paddle][] to a stream of
-dots and dashes:
+A friend of mine (Rick PA5NN) built a morse code transceiver, the [ATSAMF][]
+(Dutch), and I wrote the [Arduino software][ATSAMF-source] for it. Part of the
+software is the keyer routine, which translates the input of a [dual-lever
+paddle][] to a stream of dots and dashes:
 
 ![Electronic dual paddle keyer (public domain; from the Wikipedia page).](/assets/img/dual-lever-paddle.jpg)
 
@@ -437,9 +440,13 @@ reproduce bug. However, it is clearly most usable when the code you want to
 test is not very Arduino-specific. It remains to be seen at what point you hit
 the limit of how much you can mock.
 
+The Arduino code is [on GitHub][ATSAMF-source], and here is [the comparison of
+the changes made for this article][diff].
+
 [Arduino]: https://www.arduino.cc/
 [ATSAMF]: https://a03.veron.nl/projectvoorstel-pa5nn-zelfbouw-qrp-hf-cw-transceiver/
 [ATSAMF-source]: https://github.com/camilstaps/ATSAMF-source/
+[diff]: https://github.com/camilstaps/ATSAMF-source/compare/1f0242cc283019f02f96a43b4271079b307e5a1d..174cb89c1706f2f2222ce72b3fff0591e88e9e43
 [dual-lever paddle]: https://en.wikipedia.org/wiki/Telegraph_key#Dual-lever_paddles
 [Haskell]: https://haskell.org/
 [QuickCheck]: https://hackage.haskell.org/package/QuickCheck/
-- 
cgit v1.2.3