Thread: Neo900 - finally a successor of N900
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joerg_rw is offline joerg_rw
2014-10-09 , 12:43
Posts: 2,222 | Thanked: 12,651 times | Joined on Mar 2010 @ SOL 3
#2123
Originally Posted by txus View Post
BTW, I was comparing the block diagrams of N900 and Neo900, and noticed the privacy indicador next to the flash LEDs (the red light on the N900) is missing. I also saw there is a LED called "Privacy" attached to the "Basic RGB LED drivers" block, but I assumed this was meant as the privacy "alarm" feature for the modem monitor, because of what I understood how this feature would work and the fact that it is attached to i2c #3 instead of #2. I searched in this thread but found nothing (sorry if I missed something!), so I wondered if this feature is just missing in the diagram for the moment, if it isn't planned at all, or I misread/misunderstood the diagram! I mostly do high-level programming and some sysadmin stuff, so the latter could very much be the case...

Thank you! Nice progress!!
The N900 has a simple red privacy LED which is controlled by same chip as the flashlight. In Neo900 we will replace that by a RGB-LED (called "PRIVACY" which you already spotted) which cannot get controlled by that chip and thus is connected to one of our LED controller chips.
The purpose is to have an additional info channel to user when s/he does some activity in battery compartment, like swapping uSD or battery. In this case a RGB LED comes in convenient for signalling e.g. umount of any swap completed so it's safe to remove uSD - in case you decided to have your swap on uSD rather than eMMC. Or - for battery swap - user might want to know if either suspend-to-disk or charging the "huge buffer capacitor" already finished so it's safe to proceed with battery swap.
If there are still questions regarding this detail, please don't hesitate to ask.

cheers
jOERG
Last edited by joerg_rw; 2014-10-09 at 12:49.
 

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