RE: Wake on ANT activity?

David Smoot — Thu, 17 Sep 2015 19:09:56 GMT

You have to receive radio signals to respond to them. Receiving signals means the radio must be on, which burns power.

Unless you have some mechanism to know exactly when to listen, you have no choice in the matter.

If you control both sides, Master and Slave, you can implement some adaptive clocking of transmissions to minimize power. But if you need to respond quickly to a master that is arriving at an unknown time, there is no choice to listen often.

RE: Wake on ANT activity?

Harrison Chin — Thu, 17 Sep 2015 17:39:41 GMT

In order to detect radio activity your slave will need to search.

It may be lower power to instead keep the channel between your master and slave open at the largest possible channel period instead, and then use a message to speed the up the channel or open a faster channel when necessary.