Tried to publish before configured, topic id 13x

asked 2016-10-21 03:42:23 -0600

Zero gravatar image

Hi everyone,

I'm trying to use the rosserial to communicate with the mbed. It will be able to run the example blink the LED but when I try to run my own testing program it will shows me following errors: ubuntu@ubuntu-desktop:~$ rosrun rosserial_python serial_node.py _port:=/dev/ttyACM0 _baud:=115200

[INFO] [WallTime: 1477038872.792745] ROS Serial Python Node
[INFO] [WallTime: 1477038872.798014] Connecting to /dev/ttyACM0 at 115200 baud
[INFO] [WallTime: 1477038875.007757] wrong checksum for topic id and msg
[INFO] [WallTime: 1477038875.025293] Note: subscribe buffer size is 512 bytes
[INFO] [WallTime: 1477038875.025679] Setup subscriber on reset_all_encoders [std_msgs/Empty]
[ERROR] [WallTime: 1477038875.305424] Tried to publish before configured, topic id 134
[ERROR] [WallTime: 1477038875.307353] Tried to publish before configured, topic id 125
[ERROR] [WallTime: 1477038875.309200] Tried to publish before configured, topic id 126
[ERROR] [WallTime: 1477038875.311065] Tried to publish before configured, topic id 127
[ERROR] [WallTime: 1477038875.312732] Tried to publish before configured, topic id 128
[ERROR] [WallTime: 1477038875.314407] Tried to publish before configured, topic id 129

Why am I getting this error? please help. Thank you so much!

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Comments

I think you'll get a bit more response if you include the source that is running on your mbed platform. Please use the Preformatted Text button for that (it's the one with 101010 on it).

gvdhoorn gravatar image gvdhoorn  ( 2016-10-21 04:22:46 -0600 )edit
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