In this Instructable we look at how to program registers on Arduino's based on the SAMD21 MCU, like the Zero and MKR1000. To do this we will leverage the Atmel ASF data structures. This is a great way to access capabilities in the SAMD21 that are not covered by Arduino libraries. The link to the ASF documentation is http://asf.atmel.com/docs/3.16.0/samd21/html/annotated.html
You can find the code from the video on my blog at: http://forcetronic.blogspot.com/
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