March 2018
Intermediate to advanced
1396 pages
42h 14m
English
book
ROS Programming: Building Powerful Robots
by Anil Mahtani, Luis Sanchez, Enrique Fernandez, Aaron Martinez, Lentin Joseph
Content preview from ROS Programming: Building Powerful Robots
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Parameter Server
Parameter Server is a shared, multivariable dictionary that is accessible via a network. Nodes use this server to store and retrieve parameters at runtime.
Parameter Server is implemented using XMLRPC and runs inside the ROS master, which means that its API is accessible via normal XMLRPC libraries. XMLRPC is a Remote Procedure Call (RPC) protocol that uses XML to encode its calls and HTTP as a transport mechanism.
Parameter Server uses XMLRPC data types for parameter values, which include the following:
- 32-bit integers
- Booleans
- Strings
- Doubles
- ISO8601 dates
- Lists
- Base64-encoded binary data
ROS has the rosparam tool to work with Parameter Server. The supported parameters are as follows:
- rosparam list: This lists all the ...