Re: power saving when BLE app running in background
Re: power saving when BLE app running in background
- Subject: Re: power saving when BLE app running in background
- From: Joakim Linde <email@hidden>
- Date: Mon, 04 Jun 2012 10:07:55 -0700
Hi zz_zhang,
If you need the RSSI every 200ms you will never let the Application Processor go to sleep. Even if the screen is off, the AP will draw lots of current.
Another way would be for you to take a more event driven approach. The App will get notified on connect and disconnect. So, a question you have to ask yourself is do you really need to see the RSSI value every 200ms or is it enough to know that the device is within range?
Thanks, Joakim
Hi, I have designed an app for BLE device. And keep it running in background to read RSSI with 200ms period. I found that my iphone 4s battery reduces quickly. (5 hours reduces in percent 10). Someone said that update the iOS to v5.1 will saving power consumption. But my Xcode is 4.2 and my computer is 32bit. Can not update to 64bit Mac os lion. Could Xcode 4.2 debug with iphone which has iSO5.1. Did I read the RSSI frequently? But I need to get a accurate RSSI value. Is there any way to deal with power saving in programming? Thanks!
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