GR-230 USB driver not loading

rick78 · Occasional Visitor Joined: Jan 17, 2004 Posts: 15

Hi Guys,

I am trying to connect the GR-230 to the USB port and both XP and 2000 fail to recognize it. I ran the latest exe driver update from Holux, but it does not help.

Anyone have any recomendations?
I thought this GPS antenna was highly rated. So far it is nothing but headaches.

regards,
Rick

DinAlt · Posted: Sat Jan 17, 2004 6:51 pm Post subject:

Hi rick,

Did you buy the optional data cable ? the one that comes as standard is purely for charging it.

DinAlt

rick78 · Occasional Visitor Joined: Jan 17, 2004 Posts: 15

hehe. I guess they got me there.
Ok, I guess I have to order this data cable.

Thanks.

jimberry · Occasional Visitor Joined: Jan 17, 2004 Posts: 1

Is the data cable a special Holux thing?

Or will any USB-to-mini USB cable (like one for a USB hub or a Sony digital camera) work?

-jim berry

Hamie · Regular Visitor Joined: Dec 30, 2003 Posts: 177

It's a special cable. The holux GR230 interface is actually a TTL level serial port (i.e. 3 wire RS232 with incorrect voltages being 0 to 5V instead of +-3V to 12V).

The reason it uses a mini USB type B connection is probably because it's very small. This produces a bit of confusion because lets face it, you see a USB connector, you expect it to be a USB connection. But it's not.

The cable itself has a Prolific 2302 USB-Serial converter in it (Or something that emulates that device) to do the conversion between a USB connection and the TTL serial port. The USB driver then just provides an emulated serial port (Or in the case of Linux a character device /dev/ttyUSB0 that looks like a normal tty).

DavidW · Posted: Wed Jan 21, 2004 5:12 pm Post subject:

Prolific PL-2302 is a USB/USB network bridge chip (used for those modules that allow you to make a network connection between two machines using a USB port).

The USB/serial chip is Prolific PL-2303. I'm sure this was just a typo, but if people are trying to hunt down Linux drivers, it's worth correcting!

Prolific themselves have a driver download site - it has been at http://tech.prolific.com.tw. At the time of writing I can't get it to work - though maybe there are more up to date Linux drivers there (that don't cause the problem with an Oops that some are reporting).

David

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