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ROS custom baud rate on serial port?

asked 2018-06-27 04:31:24 -0500

Hypomania
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updated 2018-06-27 06:00:48 -0500

gvdhoorn
86574 ●283 ●1432 ●1054 http://cor.tudelft.nl/

Hi,

What's the easiest way to set a custom baud rate on Ubuntu 16.04? I am using serial which is based on termios, however it doesn't allow me to use custom baud rates (I just get operation is not supported error). I would like to contain my serial interface within ROS if possible.

I have a sensor that's outputting 128000 baud rate, there is no way to adjust the firmware for that. I have tried using pyserial with 128k baud rate set and it works just fine, is there any way to achieve correct results in ROS?

Thanks!

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answered 2018-06-27 07:37:20 -0500

Hypomania
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If anyone is interested, I managed to fix it (or work around):

Using the same library, the application that's using it has to be run in "sudo" mode to bypass the exception. Alternatively, you can comment out the exception in Unix.cc @ line 331.

So it says "operation not supported" but it works if ran in sudo mode. As to why it says not supported, I don't know, maybe something to do with me using a VM rather than a physical device.

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Asked: 2018-06-27 04:31:24 -0500

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ROS custom baud rate on serial port?