Fix mag readings being reset when the mag isn't ready.
treec42ff2693de324f7944ea71b2c007bbcd48f7331
-rw-r--r-- 156 .gitattributes
-rw-r--r-- 189 .gitignore
-rwxr-xr-x 2251 .travis.sh
-rwxr-xr-x 1445 .travis.yml
-rw-r--r-- 879 CONTRIBUTING.md
-rwxr-xr-x 542 JLinkSettings.ini
-rw-r--r-- 35147 LICENSE
-rw-r--r-- 28845 Makefile
-rw-r--r-- 397 Notes.md
-rw-r--r-- 6042 README.md
-rw-r--r-- 1219 Vagrantfile
-rwxr-xr-x 1331 build_docs.sh
drwxr-xr-x - docs
-rwxr-xr-x 876 fake_travis_build.sh
drwxr-xr-x - lib
drwxr-xr-x - media
drwxr-xr-x - src
drwxr-xr-x - support