Software for the Maemo OS (N900 tablet)

The Maemo OS (N900 tablet)

Nokia was very early with its Internet tablets N770, N800 and N810, based on the Maemo OS, which is a version of Linux. The software was based on the Debian GNU/Linux system, and most of it was open source. Many excellent applications were written for or ported to Maemo, see the Maemo home page.

Unfortunately, Nokia did not know how to use its lead, and left the initiative to the iPhone. After a long time, and after the release of the iPhone, Nokia released the next version of its tablet, N900, which includes a mobile phone. This course of events put Maemo on a dead end, a fate for which it is far too good.

On this page I offer a modification to two of the Maemo applications.

The Dutch RDS coordinate system

Natural history and other observations in the Netherlands are positioned using the Dutch RDS (RijksDriehoeksStelsel) coordinates, better known as Amersfoort coordinates. The javascript module jgis contains an algorithm to convert GPS coordinates to RDS coordinates. I rewrote the algorithm in C and C++.

On this page I offer versions of Mappero and GPSJinni which include this algorithm.

Software for the Maemo OS (N900 tablet)

Mappero with Dutch RDS coordinates

Mappero is a mapping and navigation application for the Maemo OS (N900 tablet), written by John Costigan, Alberto Mardegan and others. Here I offer a patched version which includes RDS coordinates as an additional degrees format.

With this patch, in Mappero RDS coordinates can be selected as the degrees format. With this selection the GPS position and the coordinates of a tapped point are shown as RDS coordinates.

I present the patched package under the name Mappero-RDS, which in the package system conflicts with Mappero. I believe that this is the best way to avoid problems in the package system. I regret that I have not been able to remove a problem in the renamed package: Sometimes the package does not have an icon on the display, and therefore gets the default blue square icon.

History

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GPSJinni with Dutch RDS coordinates

GPSJinni is a small program that visualizes raw data from the GPS subsystem for the Maemo OS (N900 tablet), written by Tim Teulings. Here I offer a patched version which includes RDS coordinates, also known as Amersfoort coordinates.

With this patch, in the general overview RDS coordinates are shown in addition to and below latitude and longitude.

I present the patched package under the name GPSJinni-RDS, which in the package system conflicts with GPSJinni. I believe that this is the best way to avoid problems in the package system.

History

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