[ros-users] rosserial and custom message: cannot load package error

[brice rebsamen]

Hi and thanks for the quick reply.
I did rosmake lowlevel.
I think a proof is that loading the package manually in ipython works.

On Fri, Aug 26, 2011 at 11:25 AM, Adam Stambler <adasta at gmail.com> wrote:
> Hi Brice,
>
> You still need to make your custom message package (rosmake lowlevel).  You
> generated the Arduino code but you still need to make the message package in
> order to build the python/cpp message code that the rest of ros uses.
>
> In the future, please use answers.ros.org for these kinds of questions.
>
> Regards,
> Adam
>
> On Thu, Aug 25, 2011 at 11:21 PM, brice rebsamen <brice.rebsamen at gmail.com>
> wrote:
>>
>> Hi
>>
>> I am trying to set an arduino node. Here is the short version of the
>> story.
>>
>> I defined a custom message ("lowlevel/Arduino") and generated the
>> appropriate header using the script for that. The arduino code
>> compiles alright. However, I am having a problem on the python_node
>> side: it cannot load my package 'lowlevel':
>>
>> [ERROR] [WallTime: 1314328569.317936] Cannot import package : lowlevel
>> [ERROR] [WallTime: 1314328569.318390] Failed to parse subscriber.
>>
>> However, if I run the following commands in ipython, it seems to work:
>>
>> In [1]: import roslib; roslib.load_manifest("rosserial_python")
>> In [2]: import rospy
>> In [3]: roslib.load_manifest('lowlevel')
>> In [4]: m=__import__('lowlevel.msg')
>> In [5]: m.msg.Arduino
>> Out[5]: <class 'lowlevel.msg._Arduino.Arduino'>
>>
>> What am I doing wrong?
>>
>> Brice
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>
>
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