MacSamba2 (Copyright © 2006 - 2015 Nick Howes) is a command line utility program for downloading code into an Atmel ARM Cortex-M7 CPU via a USB port under Mac OS X. It is released under the GPL. You may use it for free (but donations are gratefully accepted - click on the button below).
I've tested with an AtmelŪ| SMART SAM V71 Xplained Ultra evaluation kit and Mac OS X 10.10 "Yosemite".
There may be bugs in the code that cause malfunctions.
Download the executable, source code and documentation: MacSamba2.zip.
Send comments, questions, suggestions, bug reports to firstname.lastname@example.org