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[sensors] What if requested polling frequency is > time it takes to read data out of the sensor?

From: Tobie Langel via GitHub <sysbot+gh@w3.org>
Date: Wed, 03 Jun 2015 18:32:50 +0000
To: public-device-apis@w3.org
Message-ID: <issues.opened-84707825-1433356368-sysbot+gh@w3.org>
tobie has just created a new issue for https://github.com/w3c/sensors:

== What if requested polling frequency is > time it takes to read data
 out of the sensor? ==
For example, getting the temp and humidity readings out of certain 
cheap sensors can take up to 0.25 seconds.

Should this be reflected in `Sensor.frequency`? i.e. should: 
`Sensor.Temp({ frequency: 60 }).frequency` return `60` or `4` (4 Hz ==
 0.25s intervals)?

My feeling is that in shouldn't given that it's not observable by 
consumers if the only thing exposed is `onchanged` events.

It becomes very different if `ondata` events are exposed.

Either way, that might warrant a note in the spec, no?




See https://github.com/w3c/sensors/issues/23
Received on Wednesday, 3 June 2015 18:32:51 UTC

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