[mkgmap-dev] Opening gmapsupp.img with Basecamp?From Andy Allan gravitystorm at gmail.com on Thu Mar 31 12:23:47 BST 2011
On Sun, Mar 20, 2011 at 2:02 PM, Steve Ratcliffe <steve at parabola.me.uk> wrote: > > Hi > >> I've been experimenting with Garmin BaseCamp opening gmapsupp.img >> files that I create. It works fine for some files (even getting the >> .TYP styling correct) but not for others. After a few hours of testing >> it seems that it'll open gmapsupp.img files created from 1-20 .osm >> files but not 30+ .osm files. I'm not certain yet if it's the exact >> number of files, or the combined size that triggers the failure. > > Is the size of the resulting gmapsupp.img around 128M when it goes wrong? > > If so it could be the 'filesystem' parameters in the header, which are > set to allow a size of 128M. This is ignored by devices so isn't > usually a problem. Sorry for the delay. That's exactly the problem, it works for maps up to 128M but not higher than that. I had a little explore in the source code and found the tantalising "gives 128M will try more later" comment, and naively tried a larger number of cylinders. Tried 0x200 but that didn't work. Reading the code below that bit I realise now it might not be so easy :-) I'm happy to do some more experimentation / testing patches etc if you can give me some things to try. Cheers, Andy
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