Hi, > On Fri, 4/24/09, Tony Naggs <tony.na...@googlemail.com> wrote: > > The short answer is that the PIC 18F4550 processor will not help. > USB needs a "host" (typically a PC) that times & controls each data > packet and a "device" to talk to. Optionally a hub is both a device > and relay of timing & data to further devices. Both the PIC processor > and the USRP are devices, and cannot talk to each other.
So USB device can only talk to USB Hub.Thanks for this clarification. > Also the USRP documentation says it needs "USB2", which I > think means it needs the "High Speed" data transfer of USB2. Whereas > the PIC 18F4550 only supports the lower transfer speeds of USB1.1 I mentioned PIC16F4550 as an example for mcu that has a USB port. Actually, I didn't checked whether it supports HS or FS (Sorry for bad example). > An easier path would be to look small processor boards such as those > that support embedded Linux. For instance the web page for the > Gumstix Overo Earth says it has a "USB HS Host" and a micro SD slot. > (Not micro SDHC - so you are limited to, I think, 4Gb cards.) > See: > http://gumstix.com/store/catalog/product_info.php?cPath=31&roducts_id=211 Thank you for your suggestion, but I'm looking for cheep and simple method to load USRP firmware. Best Regards, Firas _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
