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2012-08-23 23:01:38 -0500 | commented question | iRobot Create and BeagleBoard "Failed to open port /dev/ttyUSB0" I can't do that, because i don't have batteries in my Create. I am powering it from DC power supplier (for now at least). Beside that, the minicom example was brought up to show, that there is a communication between Create and BeagleBoard and there still isn't any when turtlebot_node is launched. |
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2012-08-07 23:06:16 -0500 | asked a question | iRobot Create and BeagleBoard "Failed to open port /dev/ttyUSB0" Hello, I am trying to launch iRobot Create using BeagleBoard xM revC with Ubuntu ARM installed. I downloaded sources of turtlebot stack, fulfilled all needed dependencies for turtlebot_node package and rosmade it. After I run command rosrun turtlebot_node turtlebot_node.py i get following output: My USB-serial cable seems to work fine. Here's output of lsusb: I tried solution presented here. My rule line was: I created group turtlebot, added user ubuntu to it and restarted udev. After ls -la /dev/ttyU* i get following: So the permissions should be fine. I tried minicom to check if I get anything from Create, and some trash pops out on the screen, so data is transfered through the USB-Serial port (what's more, the fact that I can use minicom without sudo prefix indicates that permission to use ttyUSB0 port is granted to user ubuntu). Cables seems to be fine as well, because i can easily connect to Create from my laptop (after proper permissions change). I would greatly appreciate any help. EDIT: I properly set serial port properties (baud rate 57600 8N1, no flow control) and was able to receive clear output from my Create. So the system properties (permissions and stuff) are set correctly. I suppose there has to be something wrong with the package itself. |