Qibla Mekka Kaaba compass - Revision history

Mr-fix at 11:20, 9 January 2025

2025-01-09T11:20:42Z

← Older revision		Revision as of 13:20, 9 January 2025
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	TODO		TODO

			[[Category:Software]]
			[[Category:Research]]

Mr-fix at 08:49, 9 January 2025

2025-01-09T08:49:56Z

← Older revision		Revision as of 10:49, 9 January 2025
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	There's a function in called Mekka Compass mentioned in Audi MMI User Manual <ref>https://www.paradigital.net/8vfl/ba/page_00546.htm</ref> as well as on Twitter by Audi Middle East <ref>https://x.com/AudiMiddleEast/status/487282678589579264?mx=2</ref>~~. Let's investigate how to enable it in the Audi MHI2 MMI system~~.		There's a function in called Mekka Compass mentioned in Audi MMI User Manual <ref>https://www.paradigital.net/8vfl/ba/page_00546.htm</ref> as well as on Twitter by Audi Middle East <ref>https://x.com/AudiMiddleEast/status/487282678589579264?mx=2</ref>.

	[[File:Mekka compass in Audi MMI.jpg\|frameless\|Audi MMI Navigation display with Mekka Compass]]		[[File:Mekka compass in Audi MMI.jpg\|frameless\|Audi MMI Navigation display with Mekka Compass]]

			Looking at the firmware files, there are <code>.kzb</code> files with GUI assets for this feature.

			[[File:Mekka compass assets from kzb.jpg\|frameless\|alt=Mekka Compass assets extracted from .kzb file\|Mekka Compass assets extracted from .kzb file]]

			I would love to know how to enable this feature. Let's investigate Audi MHI2 MMI system to find some reference to the logic behind it.

	== Basic research ==		== Basic research ==
	First thing that I tried was to enable <code>compass</code> adaptation channels. Sadly, no change.		First thing that I tried was to enable <code>compass</code> adaptation channels. Sadly, no change.

			One of the [[VAG - MIB2 Telegram Group]] users suggested setting the TMC adaptation channel to specific value. But again - no change.

	== Deep research ==		== Deep research ==

Mr-fix at 21:22, 8 January 2025

2025-01-08T21:22:07Z

@@ Line 1: / Line 1: @@
-There's a function in called Mekka Compass mentioned in Audi MMI User Manual. Let's investigate how to enable it in the Audi MHI2 MMI system.
+There's a function in called Mekka Compass mentioned in Audi MMI User Manual <ref>https://www.paradigital.net/8vfl/ba/page_00546.htm</ref> as well as on Twitter by Audi Middle East <ref>https://x.com/AudiMiddleEast/status/487282678589579264?mx=2</ref>. Let's investigate how to enable it in the Audi MHI2 MMI system.
 == Basic research ==
@@ Line 48: / Line 50: @@
 Bingo! <code>12</code> is <code>MEAST</code> - Middle East! So it looks like all is needed is module 5F coding for proper region, and that's it!
 == Effects ==
 TODO

Mr-fix: Created page with "There's a function in called Mekka Compass mentioned in Audi MMI User Manual. Let's investigate how to enable it in the Audi MHI2 MMI system. == Basic research == First thing that I tried was to enable `compass` adaptation channels. Sadly, no change. == Deep research == Since I had access to decompiled LSD.JXE, I started to search for "mekka" reference. I've found `.kzb` references to GUI assets as well as function called `isMekkaCompass..."`


2025-01-08T19:17:02Z
Created page with "There's a function in called Mekka Compass mentioned in Audi MMI User Manual. Let's investigate how to enable it in the Audi MHI2 MMI system.  == Basic research == First thing that I tried was to enable <code>compass</code> adaptation channels. Sadly, no change.  == Deep research == Since I had access to decompiled LSD.JXE, I started to search for "mekka" reference. I've found <code>.kzb</code> references to GUI assets as well as function called <code> isMekkaCompass..."
New page
There's a function in called Mekka Compass mentioned in Audi MMI User Manual. Let's investigate how to enable it in the Audi MHI2 MMI system.



== Basic research ==

First thing that I tried was to enable <code>compass</code> adaptation channels. Sadly, no change.



== Deep research ==

Since I had access to decompiled [[LSD.JXE]], I started to search for "mekka" reference. I've found <code>.kzb</code> references to GUI assets as well as function called <code> isMekkaCompassAvailable</code> in file <code>de/audi/thgu/navi/app/util/Util.java</code>:



    public static final boolean isMekkaCompassAvailable(IFrameworkAccess iFrameworkAccess) {

        return iFrameworkAccess.getSysConst(4396) == 1;

    }



Looks like system constant <code>4396</code> stores information about the availability of the feature. So let's check where and how this value is set.



I've inspected file <code>de/audi/mib/config/AbstractSysConstManager.java</code> and found this:



        boolean bl2 = this.getSysConst(532) == 12;

        this.setSysConstBool(4396, bl2);



Looks simple. It checks if constant <code>532</code> is set to <code>12</code>. If yes, it set's the constant <code>4396</code> to <code>true</code>. So where and how's the constant <code>532</code> set?



In the same file as above, there's part of the code that sets it:



        this.setSysConst(532, coding.getCountry());



I'm not going to dig through the <code>getCountry()</code> function, because I believe I know where it's leading me to. Let's check module <code>0x5F</code> long coding, byte 3 - byte_3_Country_Navigation. Which values can be coded there and if <code>12</code> would mean something?



    "keine" 0

    "EU" 1

    "NAR" 2

    "MSA" 3

    "Korea" 4

    "China" 5

    "Japan" 6

    "AsiaPacific" 7

    "Australia" 8

    "South Africa" 9

    "NEAST" 10

    "NMAfrica" 11

    "MEAST" 12

    "CentralAsia" 13

    "India" 14

    "Israel" 15

    "Taiwan" 16

    "MSA 2 (Chile)" 17

    "China 2" 18

    "China 3" 19 



Bingo! <code>12</code> is <code>MEAST</code> - Middle East! So it looks like all is needed is module 5F coding for proper region, and that's it!



== Effects ==



TODO