[aprssig] USB GPS receiver
Stephen H. Smith
wa8lmf2 at aol.com
Thu Oct 27 13:55:09 CDT 2005
wa7nwp at jnos.org wrote:
>> USB devices WILL ONLY WORK WITH A PC! USB is a totally "PC-centric"
>> protocol. There is NO PRACTICAL WAY to make an external USB device
>> work with a serial port on TNCs, TinyTraks, D700s, or anything else
>> OTHER than a USB port on a PC.
> It's not an absolute. They can build a USB reader in a mini-fm
> transmitter and sell it for $25 at Costco. Not the one in the link
> but similar.
> No doubt a thumb drive is simpler then a serial port but still it
> proves that it is possible to build embedded devices that do USB.
I bet this device has the generic "mass storage class" USB device driver
hard-coded into it's firmware (rather than the vendor/model-specific USB
device ids that virtual serial port devices require.)
(Flash drives normally don't normally require vendor-specific drivers;
just plug 'em into any Win2K or XP machine and they automagically work
using the existing generic mass-storage device driver that also
accomodates external hard disks, some digicams, USB-interface external
floppies, etc. )
Stephen H. Smith wa8lmf (at) aol.com
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