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I use screen /dev/ttyUSB0 to stream data from some device. This results in a string being printed to the terminal continuously similar to this:
0,0 abc;--------------- def;G;001;
0,0 abc;--------------- def;G;001;
0,0 abc;--------------- def;G;001;
0,0 abc;--------------- def;G;001;
How would I publish this data or some values from it to a topic?
Hey, You can use the pyseriallibrary to read the data coming from USB with Python. You can process it if you want, then put the data into messages according to your needs and then publish it. This should help you : http://wiki.ros.org/roscpp/Overview/P...
In a bash script ? Technically yes it's possible. You can parse your output somehow, with awk for example and then publish your data with the rostopic pub command., for example like that : $ rostopic pub /topic package/msg_type '{x: 1, y: 2, c: a, type: string}' (Example from here). But I wouldn't call this a clean way to do it. Making a python node would be way better.
Asked: 2021-01-22 08:19:55 -0600
Seen: 178 times
Last updated: Jan 22 '21
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