[mkgmap-dev] Feedback: Searchable Addresses (using r991)

Wed Apr 8 18:36:09 BST 2009

Hi Carlos,

yes I can confirm this behavior on the nuvi. It looks like the nuvi 
needs the MDR file for the address search option.

Is there anybody who wants to join me in understanding the MDR file ?  I 
did already some research on the MDR file. Most of the sections I have 
not decoded until now. The MDR file has about 20 mysterious sections. 
What I found out so far is that we need at least 7 sections to enable 
the Nuvi address search. I found this out by removing section by section 
out of the header of a working MDR file. I have added some code to 
libgarmin to display some sections of the MDR. I'm able to decode some 
parts of the city, street and region index.
I also started implementing some prototype to write this MDR blocks in 
mkgmap. Until know I didn't managed to generate a file that would open 
at least the country select dialog on the nuvi. I think it will be a 
long way. But I think it is doable since there are working examples e.g. 
generated by cgpsmapper that are not encrypted.

First of all I think we need a site to collect information ?  I'm not so 
sure if the OSM wiki is the right location to collect garmin file 
information ?

Thanks
Berni.
> Some more feedback about address search, in nüvi:
> When you select the Address option you're prompted for a State and a
> button to spell state is presented. If you push it a list of states is
> shown, but it's empty. Pushing "back" button leads you to a keyboard to
> enter state name, but any letter you push sends you back to the empty
> list with "No results found" message. The map I'm using to test is
> generated with the option --country-name=ESPAÑA.
> Can anyone with a nuvi confirm this behavior