Serial to USB converter

[jrt4fun]

Hello,

I'm having some problems with an HP pocketpc.
I want to connect a serial GPS to a HP 1915, now here comes the problem this type of pocket pc does not have a serial connection but only a USB one.

I was wondering whether it is possible to use a pic to create a Serial to USB converter for this pocketpc???
Taken into account that the pocket pc is no host on USB level!
Is this possible to make the pic act as a host for USB?

Thank you

Best regards

[Melanie]

The PIC can't normally act as a Host. Not saying you can't do it, but you'll have to write all the software from the ground up. Easier to invest $20 and buy an off-the-shelf Serial/USB adaptor and see if it'll work (you may need to write a driver on the HP for it). You'll end up investing a hundred times that amount in labour and hassle if you go the PIC route.

[jrt4fun]

Hi Melanie,

Thank you for your quick reply.
I will go for the second option it seems easier that way.

Best regards,

[Luciano]

- The HP 1915 can only connect to a host USB like what is on a PC or laptop.
- There is no SDIO support with the HP 1915 SD card slot.

Buy a new Pocket PC!

Luciano

[NavMicroSystems]

jrt4fun

the hp 1915 will not act as an USB-Host,
so save the money for the serial-USB connector,
it will NOT work on the hp.

But you could link the serial GPS via IR.

[jrt4fun]

I've also been thinking in the direction of using the IR port.
Now what puzzles me is it IRDA or just some common IR signal that should be used?

This might sound quite blunt but do you happen to have a schematic for this?
I tried already to hook up a IR led via a transistor to the serial output op the GPS without any luck I must admit (see attached schematic).
I suspect that this is to be used with the Irda connection on the mainboard of a pc instead of the serial port.

Best regards

[ardhuru]

Hi,

Check up the site www.sirpic.com

Ravi has a number of very useful pics programmed for IRDA connectivity. Also, he's very helpful and will guide you as well.

Regards,

Anand