[Rock-dev] Fwd: Howto get access to properties?
Leif Christensen
leif.christensen at dfki.de
Tue Sep 24 12:15:22 CEST 2013
Am 09.09.2013 14:23, schrieb Alexander Duda:
>> The new async api should be used for gui's
>> however how could be an Async Property be readed or written?
>> http://www.rock-robotics.org/master/documentation/graphical_user_interface/300_displaying_logfiles.html
>> does not explain it
>> example
>>
>> t = some_async_task
>> p = t.property("a")
>>
>> failes:
>> p = 5
> Async objects have the same interface like the corresponding sync ones
> but the possibility to give a callback if the the method shall
> asynchronously be called.
>
> sync call:
> p.write(val)
>
> async call:
> p.write(val) do |result,error|
> if error
> raise
> end
> end
Same problem here:
Just replacing
imu_xsens = TaskContext.get 'imu_xsens' with
imu_xsens = Orocos::Async.proxy("imu_xsens")
is not working when trying to set a property in the same way as before:
imu_xsens.port = "/dev/ttyUSB0"
Orocos[WARN]: killing running task contexts and deployments because of
unhandled exception
Orocos[WARN]:
/home/leifole/dev/rock/smallrock/tools/orocos.rb/lib/orocos/async/task_context_proxy.rb:809:in
`method_missing': undefined method `port=' for
#<Orocos::Async::TaskContextProxy:0x000000039e7200>
Do I have to add something else in the script, e.g. when starting the
task,etc.?
1 require 'orocos'
2 require 'vizkit'
3 include Orocos
4
5 Orocos.initialize
6
7 device_name = "/dev/ttyUSB0"
8
9 Orocos.run 'imu_xsens::Task' => 'imu_xsens' do
10 # imu_xsens = TaskContext.get 'imu_xsens'
11 imu_xsens = Orocos::Async.proxy("imu_xsens")
12 imu_xsens.port = device_name
13 plot = Vizkit.default_loader.Plot2d
14
15 #Orocos.log_all
16
17 imu_xsens.configure
18 imu_xsens.start
19
20 imu_xsens.calibrated_sensors.connect_to do |blub|
21 plot.update blub.mag[0],"Mag X"
22 plot.update blub.mag[1],"Mag Y"
23 plot.update blub.mag[2],"Mag Z"
24 end
25
26 plot.show
27 Vizkit.exec
28 end
LG,
Leif
--
Leif Christensen
DFKI Bremen
Robotics Innovation Center
Robert-Hooke-Straße 5
28359 Bremen, Germany
Phone: +49 (0)421 17845-4149
Fax: +49 (0)421 17845-4150
E-Mail: leif.christensen at dfki.de
Weitere Informationen: http://www.dfki.de/robotik
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