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GPS receiver on Exynos model

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By cr2, Senior Member on 12th February 2018, 10:38 PM
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4th May 2018, 06:24 AM |#121  
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Quote:
Originally Posted by kriss3

On these settings also GPS
does not work at all

Kriss, did you use all this lines simultaneously ?
Probably there should be one line, like:

MultiCarrRFMode = {
GL_MULTI_CARR_RF_MODE_L1_L5
}

MultiCarrLnaMask = {
L5_EXT_ON
}

???
 
 
4th May 2018, 07:45 AM |#122  
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Yes all lines and no gps.

Now, I've only been editing this:
MultiCarrRFMode = {
GL_MULTI_CARR_RF_MODE_L1_L5
}

MultiCarrLnaMask = {
L5_EXT_ON
}

And then GPS does not work






Quote:
Originally Posted by PMPaul

Kriss, did you use all this lines simultaneously ?
Probably there should be one line, like:

MultiCarrRFMode = {
GL_MULTI_CARR_RF_MODE_L1_L5
}

MultiCarrLnaMask = {
L5_EXT_ON
}

???

7th May 2018, 02:30 PM |#123  
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Well, looks like we need to wait for software update from Samsung or probably for Samsung Galaxy Note 9.....
10th May 2018, 05:57 PM |#124  
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The Google GNSS Android team just finished their presentation on submeter phone GNSS at Google IO 2018. Their talk can currently be seen by following the link to the livestream at https://events.google.com/io/live which may require starting with the link at https://events.google.com/io/live and then backing up the video to their talk (the outdoor part which is the only relevant part for us is midway through - timestamp in a livestream is relative to the end/now which is changing so not useful). The recording may or may not be saved as something like Day 3 Channel 5 on youtube (I will add a link later)

My vague understanding is that getting dual frequency data may require developer mode in Android P and possibly also activating some permissions. (PS a much earlier promise of mine of relevant information has not yet panned out)

---------- Post added at 04:57 PM ---------- Previous post was at 04:44 PM ----------

try this URL https://youtu.be/yF35XaQavlg
11th May 2018, 01:40 AM |#125  
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Here's the direct link to the Google I/O session "How to get one-meter location-accuracy from Android devices":
https://youtu.be/vywGgSrGODU

I haven't had a chance to watch it yet but will report back once I do...
11th May 2018, 03:46 AM |#126  
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There is a lot of possibly unfamiliar terminology in the video. There are many techniques besides L1L5 multiband for achieving submeter accuracy (summarized by this PowerPoint: https://www.u-blox.com/sites/default..._webinarII.pdf). Two techniques mentioned in the video, RTK and correction services, may be what requires Android P (not clear to me if multiband does as well).
11th May 2018, 12:08 PM |#127  
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If someone wrote me instructions how to do it.

I can test these new settings
android that runs l5.

text info gps 1m android
http://www.yousubtitles.com/download...s-Google-IO-18

aplikacje zwiekszajace dokladnosc gps
do 1m

1

https://play.google.com/store/apps/d...cs.fr.gnss_ppp

2

https://play.google.com/store/apps/d...fr.gnss_tortcm
11th May 2018, 04:12 PM |#128  
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Quote:
Originally Posted by mkstowegnv

There is a lot of possibly unfamiliar terminology in the video. There are many techniques besides L1L5 multiband for achieving submeter accuracy (summarized by this PowerPoint: https://www.u-blox.com/sites/default..._webinarII.pdf). Two techniques mentioned in the video, RTK and correction services, may be what requires Android P (not clear to me if multiband does as well).

I just finished watching presentation. So while there is some cool stuff in the video (Wi-Fi RTT and ability to do GNSS RTK by turning off duty cycling in Android P), it unfortunately don't shed any more light on the availability of dual-frequency support in devices. L5 signals should be visible in GPSTest if the hardware supports it and the device has Android O or later (same as I originally wrote in https://medium.com/@sjbarbeau/dual-f...es-152b8826e1c).

The developer menu option (changed by the device user) to turn off GNSS duty cycling is only available on Android P, but, as described by Frank van Diggelen, this only matters if as a developer you're trying to do RTK positioning - in other words, to do RTK the GPS chipset needs to constantly stay on (which reduces battery life), and when this option is enabled it forces the GPS chipset to stay on. There is a screenshot of this developer option at 31:48, and while the video is a bit grainy the option seems to say "Force full GNSS measurements - Track all GNSS constellations and frequencies with no duty cycling". I do NOT interpret this as meaning that "L5 signals are hidden unless you flip this switch", because a) that's not how Frank described it, b) this same logic doesn't apply to seeing multiple constellations (we know we can already see all GNSS constellations on devices w/ Android O) and c) the GnssStatus object to get carrier frequency is independent of the GNSS measurements callback, and it seems this option specifically targets GNSS measurements as related to doing RTK positioning.

So, the hunt continues...
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17th May 2018, 06:23 AM |#129  
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I just come back from phone shop. Tested both S9 and S9+ with *#0*#. Both show MCU name: BCM47752KUBG1
17th May 2018, 06:54 AM |#130  
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Quote:
Originally Posted by trungthanh1288

I just come back from phone shop. Tested both S9 and S9+ with *#0*#. Both show MCU name: BCM47752KUBG1

Waiting for Galaxy Note 9...….
17th May 2018, 09:25 AM |#131  
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Maybe Oneplus 6 ?
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