Subject:
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Difficulty Activating Sensors in v0.2.4
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Mon, 6 Nov 2000 20:06:33 GMT
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Viewed:
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1299 times
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I'm using LegOS 0.2.4 on Windows 2000 (Cygwin solution).
I receive errors when I try to compile any code that activates a sensor.
I've looked at both old references and new as well as the old Dave Baum
book. At first, I thought it may just be the rotation sensor but I tried it
with the light sensor and get the same results. Therefore, I now expect the
user. :-)
In Dave Baum's first book he mentioned declaring passive senor too. I tried
to be explicit with the touch sensor and got more errors. If I don't
declare it and just use it, I'm OK.
I include dsensor.h and use commands ( XXX: is the line number )
120: ds_active(&SENSOR_3);
121: ds_rotation_on(&SENSOR_3);
122: ds_rotation_set(&SENSOR_3, 0);
The errors I receive for all three line numbers above are:
parse error before `&'
warning: type defaults to `int' in declaration of [`ds_active',
ds_rotation_on', 'ds_rotation_set']
conflicting types for [`ds_active', etc.]
previous declaration of [`ds_active', etc.] (It also includes the line
number in the header file -- 129, 163, 157 -- where it conflicts)
warning: data definition has no type or storage class
Any thoughts and/or suggestions?
Thank you,
-- Gary Mayer
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Message has 3 Replies:
 | | Re: Difficulty Activating Sensors in v0.2.4
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| (...) Which Cygwin solution? i.e., what version of gcc? (to check, run gcc --version) (...) All that code looks perfectly fine to me. In fact, it looks like it matches line by line that I compiled yesterday with no problem. Could you post the entire (...) (24 years ago, 6-Nov-00, to lugnet.robotics.rcx.legos)
| | | Re: Difficulty Activating Sensors in v0.2.4
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| (...) Warnings tell, that lines 120,etc are the declaration part of the program and you just redeclare ds_active and similiar functions. My advice is to look for a missing or redundant brace before these lines. -- Marek mbrudka@elka.pw.edu.pl (24 years ago, 6-Nov-00, to lugnet.robotics.rcx.legos)
| | | Re: Difficulty Activating Sensors in v0.2.4
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| (...) You have to use the commands inside of a method, e.g. in the main method. I just tried it and get the exactly the same error messages if I don't put these calls inside a method. If you think you put them in a method, make sure that you don't (...) (24 years ago, 7-Nov-00, to lugnet.robotics.rcx.legos)
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