Subject:
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Re: Built-in IR
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Newsgroups:
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lugnet.robotics.palm
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Date:
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Fri, 3 Dec 1999 22:58:24 GMT
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Viewed:
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2497 times
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Mike,
I've done quite a bit of investigating and I can't find a way to change
the Palm IR transmission frequency. The IR library is supposed to allow
low level configuration of the IR port but I don't see any way to set
the frequency. This seems very odd because different IrDA devices use
different frequencies so there must be a way to set this. The program
OmniRemote can transmit at different frequencies but I think the person
that wrote it is the only one that knows how to write directly to the
hardware registers to make this happen [1]. Even 3COM, on the web site,
says that this is impossible.
Sense OmniRemote is not freeware, I can understand why they would want
to protect this information. Until someone comes along that knows enough
about the Palm hardware, and is willing to share the information, I
think we are stuck.
[1] There is another remote control program that I found at PalmGear
H.Q. written buy a guy in Japan. Supposedly you can train it for new IR
signals but I can't get it to work. It wont even work with my TV or VCR
for that matter. Whatever trick he used, I don't think he is doing what
OmniRemote is.
By the way, I have found that the transmitting portion of OmniRemote to
be very reliable. Its just that the training portion is flaky. Once it
learns the right signal it works consistently. Teaching it the right
signal is the hard part. I did a test were I trained ten buttons with
the same signal under the same conditions (same ambient light and
distance). Looking at the data file, six of the ten trained codes were
different. If we only knew how they were transmitting we could plug the
correct codes into our own programs and I'm sure it would be very
reliable.
Robert Eddings
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Message has 1 Reply:
 | | Re: Built-in IR
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| Robert, you don't need to set the frequency. Just set the baud rate to a high frequency. Like 76K. Then try the things we talked about via email. MIke Robert Eddings <webmake@bellsouth.net> wrote in message news:38484B10.636C8C...uth.net... (...) (25 years ago, 4-Dec-99, to lugnet.robotics.palm)
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Message is in Reply To:
| | Built-in IR
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| The problem with programming the built-in IR in the Palm is that one needs to access and control the hardware directly. You can't use the normal programming interfaces for controlling the IR. This requires an in-depth knowledge of IR protocol and (...) (25 years ago, 12-Nov-99, to lugnet.robotics.palm)
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