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[Request] RSAP bluetooth protocol

asked 2014-02-10 22:32:49 +0300

SaimenSays gravatar image

updated 2017-09-17 20:57:48 +0300

My car (Volkswagen) has a built in hands-free equipment. This so called "premium" hands-free is also used in Skoda and Seat. There is an external GSM transmitter with better connection to cell tower, and no RF in car. So it has it's claim, but unfortunately not working on all smartphones.

It needs an additional bluetooth protocol, rSAP (Remote Sim Access Protocol)!

I've found this android app from android-rsap.com. Don't think this is working for sailfish, but maybe somewone can tell me the opposite? Don't want to pay for it senseless.

Thanks for helping me out!

Update 2017-09: Still not working on Even the big advertised bluez5 update did not fix anything. Still can't use my onboard handsfree system!

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+1, this was available also in my nokia E52 as remote sim functionality.

c.la ( 2014-02-21 18:38:17 +0300 )edit

Having used Nokia's and their Car Kits with RSAP support I must say this is the best solution to enable a good solid network connection. The current methodology of utilising the phones network connection only has issues especially when you are working in remote areas where the cell towers are running at their maximum spacing. This is very apparent in Australia outside the major city metro areas where utilising the phones network connection only results in time when you have lost connection due to its antenna limitations.

bmwebb ( 2014-05-19 14:28:29 +0300 )edit

rSAP is even standard on my old Nokia 3109c. This is why I keep this phone in the car and have a duplicate SIM card for my Jolla. Samsung S5 has rSAP, too, so it's not completely uncommon with smartphones.

ds1979 ( 2015-06-02 11:42:12 +0300 )edit

4 Answers

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answered 2014-05-19 11:57:55 +0300

harry gravatar image

SailfishOS needs an upgrade to bluez5 to support RSAP. So vote here, too: https://together.jolla.com/question/8574/harbour-api-request-qt5-qtconnectivity-qtbluetooth-bluetooth/

If you are willing to provide bluez5 packages it should happen in mer. See https://wiki.merproject.org/wiki/Nemo/GettingStartedInFixingBugs on how to build a package for mer.

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answered 2015-01-23 17:40:16 +0300

SaimenSays gravatar image

Dear developers, almost one year is gone, since I opened this request. But sadly it still does not work. Please put this on your roadmap as soon as possible!

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Seconded. However, I feel Jolla just has too few employees to even meet the most upvoted demands here (like map navigation). If the development policy was geared more to the community and open source we could already be much further.

rod ( 2015-01-23 22:05:07 +0300 )edit

The bluetooth implementation on Jolla is far from perfection. I had problems connecting the Jolla to my 2007 produced car and so far nothing was improved. My old Nexus One (purchase in 2010 in US) it was working with the same car without any problems. On my new car Jolla connects and can be used with the car audio system, but I still have some remarks how it works. So far I didn't have time to check if this is happening really only on Jolla or not. I also would wish to have more attention on the bluetooth usage. My colleagues old iPhones (4, 4s) are performing much better - using it for playing music even from apps like Spotify on car audio, not only making calls.

alexgs ( 2015-01-24 17:43:46 +0300 )edit

answered 2016-05-13 12:31:07 +0300

Johannes gravatar image

Any News about SAP or rSAP? Will it arrive?

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answered 2014-02-21 14:38:36 +0300

rod gravatar image

The android app probably won't work, haven't tested it though. I'm willing to develop something but can't even find the bluetooth sources.

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I had downloaded some bluetooth code from developer.symbian.org years ago. I tried understanding it, but I'm only an electrical engeneer, not a hardcore programmer:) I'm not firm in bluetooth stack. But maybe you can check it for usability?

SaimenSays ( 2014-02-21 21:38:07 +0300 )edit

I also looked at the code and it's indeed rather convoluted :) Presumably, some functionality can be obtained from it but as Symbian's bluetooth stack is quite different to Jolla's I'm not sure this is worthwhile. There are also iPhone implementations that are much less "bloated" and also seem to work. I'll see what I can do.

rod ( 2014-02-21 22:54:16 +0300 )edit

To add: the bluez site states that they already support PBAP 1.1. My bluetooth knowledge is too limited to draw any conclusions from this and why it doesn't already work, but if someone knowledgeable could point me into the right direction, I'd appreciate it :)

rod ( 2014-02-21 23:18:32 +0300 )edit

Hi rod. The profile is called SAP (Sim Access Profile). See here for the specs. As far as i understood this profile is already implemented in bluez. See this blog entry of Gustavo Padovan. Hope that helps. -edit- checked in mer the version of bluez. It is 4.101. According Gustavo Padovan the SAP profile arrived bluez in version 5. Mer needs an update.

je ( 2014-02-22 09:32:58 +0300 )edit

Hi, yep I investigated a little by myself and found the SAP code in the (bluez git. The code looks neat but apparently there is only a driver included for ST-Ericsson U8500. So even with a newer bluez version it would probably not work without effort from Jolla. The driver itself doesn't look complicated and is <1000 LOCs but I feel there can't be done much without more knowledge :/

rod ( 2014-02-22 12:17:51 +0300 )edit
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Asked: 2014-02-10 22:32:49 +0300

Seen: 2,132 times

Last updated: Sep 17 '17