LowPowerLab Forum

Hardware support => Moteino => Topic started by: WhiteHare on August 27, 2015, 04:43:41 AM

Title: Does RFM69 have a "low battery indicator" the same as the SX1231?
Post by: WhiteHare on August 27, 2015, 04:43:41 AM
I see references to it in the SX1231 datasheet as "low battery indicator" and "low battery detector."   http://www.semtech.com/images/datasheet/sx1231.pdf
However, I don't see any similar references in the RFM69 datasheet.

Is it worth exploring?  If so, has anyone done any  exploring of it?
Title: Re: Does RFM69 have a "low battery indicator" the same as the SX1231?
Post by: emjay on August 27, 2015, 07:49:21 AM
The RFM69 does not support RegLowBat and related commands.  Are you sure you are looking at the right chip specification?
Title: Re: Does RFM69 have a "low battery indicator" the same as the SX1231?
Post by: Felix on August 27, 2015, 08:05:41 AM
Yes it does. The chip in the RFM69 Hope modules is the SX1231H. Check the datasheets.
Title: Re: Does RFM69 have a "low battery indicator" the same as the SX1231?
Post by: TomWS on August 27, 2015, 08:55:32 AM
Quote from: WhiteHare on August 27, 2015, 04:43:41 AM
I see references to it in the SX1231 datasheet as "low battery indicator" and "low battery detector."   http://www.semtech.com/images/datasheet/sx1231.pdf
However, I don't see any similar references in the RFM69 datasheet.

Is it worth exploring?  If so, has anyone done any  exploring of it?
Good catch!  I won't be able to test this right away, but would be interested in any results anyone else finds.

Tom
Title: Re: Does RFM69 have a "low battery indicator" the same as the SX1231?
Post by: emjay on August 27, 2015, 10:14:58 AM
The RegLowBat, related commands and corresponding DIO0 interrupt mappings were removed on the SX1231H variant.
Title: Re: Does RFM69 have a "low battery indicator" the same as the SX1231?
Post by: Felix on August 27, 2015, 12:15:36 PM
Quote from: emjay on August 27, 2015, 10:14:58 AM
The RegLowBat, related commands and DIO0 interrupt mappings were removed on the SX1231H variant.
Yes the RegLowBat was, my bad. On the H chip the register is still there and it's "Reserved0C".
About the DIO0 mappings, i see them on page 48 (http://www.semtech.com/images/datasheet/sx1231h.pdf).