Difference between revisions of "DevGuide/Settings"
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The solution used in Paparazzi consist in describing the variables in a high level xml file, which is then processed to generate embedded code and used by the graphical user interface to display the suitable controls. | The solution used in Paparazzi consist in describing the variables in a high level xml file, which is then processed to generate embedded code and used by the graphical user interface to display the suitable controls. | ||
[[File:settings_overview.png|800px]] | [[File:settings_overview.png|frame|800px]] | ||
==Persistent Settings== | ==Persistent Settings== | ||
Revision as of 17:46, 7 June 2012
Settings is the generic mechanism that allows to get/set the value of any variable of the embedded code.
Overview
Problem Statement
Given an embedded program in C, we want a way to set/get the value of any variable without having to write any ad-hoc code.
- The variable can be of any base type (e.g. uint16, int32, float) or a structured type (not implemented yet).
- The variable can be directly accessed (declared in a header) or used through a pair of accessors (e.g. SetVar/GetVar).
- Typically the variable is manipulated through a graphical user interface on the ground station.
- The graphical interface can manipulate the variable in a different unit (e.g. the embedded code uses a binary fixed point representation)
Solution
The solution used in Paparazzi consist in describing the variables in a high level xml file, which is then processed to generate embedded code and used by the graphical user interface to display the suitable controls.
