Question about ATSAMD21G18 (Chip used on Zero boards)

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1

Hi,
A query to see if anyone has tried to use the onboard RTC on these chips, I’ve checked the specs here:

http://www.atmel.com/devices/ATSAMD21G18.aspx?tab=overview

and it has an onboard RTC so I am wondering if an RTC wing is necessary as I am trying to keep my package volume as small as possible.

EDIT: To add to this, Arduino site has an example that states the Arduino Zero or MKRZero or MKR1000 boards have built in RTC.

https://www.arduino.cc/en/Tutorial/SimpleRTC

Is the Adalogger M0 a clone of the MKRZero? Do you know if this code would work?

Thanks
Christian

2

Hi Christian,
If it states an onboard RTC then you should be able to use that, bear in mind you’ll need a small battery to power the RTC when power is removed.

Here is a link to the Arduino website detailing how you can do it:

https://www.arduino.cc/en/Reference/RTC