Subject:
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Re: failure in communicaton between RCX & IR Tower
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Newsgroups:
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lugnet.robotics.rcx.robolab
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Date:
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Fri, 17 Oct 2003 02:07:52 GMT
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Viewed:
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8761 times
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I tested with the same installation, IR tower & rcx module with another
laptop (by Dell) built with infrared port, wireless network card, but with
no bluetooth built in. They work fine... The problem is more and more
leaning over to hardware specific problem... ie. something different about
toshiba Satellite P25-series!!!???
Since the device manager claims the usb device (the tower) is working
properly, I can't get support help from Toshiba... But then, I called up the
Pitsco tech support, no use there either!
Does anyone know of any utlity that I can use to further debug this?
As the tower tries to interact with the rcx, it even hangs even I picked the
"usb#1" from the selection. (note that pitso stated that only selecting
"autoselect" would cause the hanging problem)
Then, I hooked a usb-to-serial converter targus hub and tested with a serial
IR Tower. Again, according to device manager, the device is working
properly. Then, as I selected the proper com port to download the firmware,
it at least did not hang my box. The tower's green light was on, but still
fail to communicate with the rcx. Error Response said ..."NO RCX RESPONSE
(7 bytes read on port 2)... 7 bytes read? It probably is somekind of
initail handshaking protocol. I just wish the robolab would tell me more
technical details, or provide some utilities for lower level debugging...
As always, suggestion and comment will be greatly appreciated!
--
EM
"Elizabeth Mabrey" <emabrey@storming-robots.com> wrote in message
news:HMux2o.19np@lugnet.com...
> PC: toshiba - P25 series model with four usb 2.0 ports, an • bluetooth/wi-fi
> capability, w/ infrared port built in as well.
> IR Tower : usb
> RCX : 1.0
>
> Symptom:
> - communication between the ir tower & laptop is fine... verified with the
> device manager
> - in the administrator/robolab screen, I selected usb#1 and attempted to
> download the firmware. The IR Tower's green light is on for a while; I
> assume it is attempting to communicate with the rcx. But no response.
> - tested the identical tower and rcx with my other 3 boxes (one XP/laptop,
> one XP/desktop, one Win2003/desktop). Communication between the tower and
> rcx works just fine. These boxes have usb1.1 ports and have NO
> bluetooth/wi-fi capability, havce NO infrared port built in.
>
> Trouble Shooting:
> - definitely not the tower, nor the rcx because they work fine with other
> boxes;
> - definitely not the external environment; because I even isolated them in • a
> black box during the test.
> - definitely not power as both my laptop and the rcx connected to AC
> adapter.
> - not the usb compatibility problem because ir tower communicates fine • with
> the laptop, as indicated by the device manager, as well as the green light
> from the tower as it attempted to download firmware.
> - does not seem to be because of the bluetooth because I disabled the
> bluetooth device thru the device manager.
>
> pondered problem:
> - what cause the rcx failing to communicate properly back to the tower?
>
> Comments and suggestions will be greatly appreciated!
>
> --
> thanks
> EM
>
>
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