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Science Forum Index » Geology - Satellite Navigation Forum » LT-20 commands
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Message |
| HMS Surprise |
 Posted: Sun Mar 04, 2007 1:36 pm |
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Guest
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Greetings,
My employer wants to read the USB data from the device rather than
thru the serial emulator. I wrote a bit of code to read it as an HID
and I am able to read the NMEA sentences for a very brief period. I
was hoping that it worked like some other HIDs I had worked with and
just started blabbing. However, it quits sending if the serial
emulator is not running.
I wondered if anyone was familiar the what the puck is expecting,
getReport requests, or the like to keep it sending.
Thanks,
jh |
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| John |
| Posted: Sun Mar 04, 2007 3:14 pm |
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Guest
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Try using a USB "sniffer" program. You should be able to observe how
the receiver works during emulation, and then you can do the same
thing in your driver.
I haven't used a sniffer in a while, but there are free ones which can
be downloaded off the web.
I'm curious about your reasons for not using the serial emulator. If
it works, the emulator is by far the easiest way to go. In my case, I
only have a Windows driver and I want to run under Linux, so I may
have a similar project in my future.
- John Morris |
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| HMS Surprise |
| Posted: Sun Mar 04, 2007 3:36 pm |
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Guest
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On Mar 4, 1:14 pm, "John" <goo...@coyotebush.net> wrote:
Quote: Try using a USB "sniffer" program. You should be able to observe how
the receiver works during emulation, and then you can do the same
thing in your driver.
I haven't used a sniffer in a while, but there are free ones which can
be downloaded off the web.
I'm curious about your reasons for not using the serial emulator. If
it works, the emulator is by far the easiest way to go. In my case, I
only have a Windows driver and I want to run under Linux, so I may
have a similar project in my future.
- John Morris
Thanks for posting.
Have downloaded Snoopy Pro, now I need to interpret what it is
capturing. Now sure of his motives but then I am not familiar with the
serial emulator's application interface. I was handed the project and
told to grab the sentences, extract the data, and forward it via MySql
inserts. Though not really clean if I just let the emulator run I can
grab all the data now. But that would be pretty low class....
Will post back what I find when I can get back to it later tonight or
tomorrow. |
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