[ros-users] hokuyo_node error

[Geoffrey Biggs]

I have encountered people who have URG-04LX's that only speak SCIP 1.
They were able to apply a firmware upgrade available from the Hokuyo
website to make them speak SCIP 2.

Geoff

On 29/06/10 01:25, Blaise Gassend wrote:
> Hi Vinay,
> 
> I believe that URG-04LX comes in multiple versions. I know that there
> are ones that do SCIP 2.0. I have one on my desk that defaults to SCIP
> 1.0, but that you can switch to 2.0 by sending a command. I suspect (but
> do not know) that there may be older ones that only do SCIP 1.0.
> 
> I just had a quick look at the SCIP 1.0 spec
> http://www.hokuyo-aut.jp/02sensor/07scanner/download/data/URG_SCIP11.pdf
> and it looks like the command to get the firmware is just "V" instead of
> "VV". Could you try redoing the picocom test and just typing V and then
> return?
> 
> I think that player actually supports SCIP 1.0, so that could explain
> why this works with player. Unfortunately the ROS hokuyo_node does not
> support SCIP 1.0.
> 
> You should be able to upgrade your firmware by contacting Hokuyo if you
> want your laser to be able to talk SCIP 2.0.
> 
> Cheers,
> Blaise
> 
> On Fri, 2010-06-25 at 17:56 -0700, Vinay K wrote:
>> Hi Blaise,
>>
>> Hokuyo model is : URG-04LX. I installed picocom, but after executing
>>  $ picocom /dev/ttyACM0
>>  ...........................................
>> Terminal ready
>>
>> Now if I type VV [or vv] it reply with "C" . So don't know what the
>> firmware version is. from URG-04LX specifications it seems that it
>> follows SCIP version 2.
>>
>> I have tested laser with player program and its working. Because of
>> modularity and distributed system I switched to ROS and just trying to
>> make an interface with powerbot [Pioneer]. I have tested p2os node
>> [from USC] and found it working. Expecting your help in this regards.
>>
>> Vinay
>>
>> On Fri, Jun 25, 2010 at 12:23 AM, Vinay K <vinay.csir at gmail.com>
>> wrote:
>>         Hi,
>>         
>>         I was trying to run hokuyo_node to test my hokuyo laser. below
>>         is the error while execution...., I have set /dev/ttyACM0 port
>>         and also permission to access ttyACM0. Getting this error and
>>         also checked the troubleshooting. Seems that I am missing
>>         something very trivial. Help from your side 'll be greatly
>>         appreciated.
>>         .......................................Error......................................................
>>         vros at powerbot:~$ rosrun hokuyo_node hokuyo_node 
>>         [ERROR] 1277434561.027264000: Exception thrown while opening
>>         Hokuyo.
>>         Checksum failed on status code. (in hokuyo::laser::sendCmd)
>>         You may find further details at
>>         http://www.ros.org/wiki/hokuyo_node/Troubleshooting
>>         .................................................................................................
>>         
>>         Thanks,
>>         
>>         Vinay
>>         
>>
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> 
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