Re: [Discuss-gnuradio] Photo of the Beagle Board and USRP

[Jeff Brower]

Philip-

> >  just being curious :) what are you going to use the
> >
> > combo(beagle+usrp) for? use beagle to replace the usrp
> >  host? they are not connected in your pic.
> 
> They really are connected. I added a note to the picture :)
> 
> Right now, I can load the 8051 and see the LED blink  slow down. Then
> the USB interface comes unglued. Not surprising since this is really
> bleeding edge stuff.
> 
> Long term, I wonder if the ARM NEON instructions are useful for signal
> processing. At the very minimum, this is a cheap system for narrow
> band signals.

You are talking about the ARM9 core on the OMAP device, right?  If so then you 
can
run Linux on the ARM core but overall processing capability will be limited 
compared
to a Xeon or Core2-something PC.  Now if you can migrate signal processing 
tasks to
the C55x DSP core on the OMAP, then you're in business.

For anyone who is wondering, OMAP series devices are widely used in cellphones 
and
other very low power consumption hand-helds -- the chip series is one of TI's 
major
breadwinners.

-Jeff

> Here's the log from a "usrper load_standard_bits" run. I promise the
> cable is connected and I did not fake this :)
> 
> The Angstrom Distribution beagleboard ttyS2
> 
> Angstrom 2008.1-test-20080410 beagleboard ttyS2
> 
> beagleboard login: root
> address@hidden:~# usrper load_standard_bits
> usrper: failed to find usrp[0]
> [TURN ON POWER TO USRP]
> address@hidden:~# <6>usb 1-1: new high speed USB device using
> ehci-omap and address 2
> usb 1-1: new high speed USB device using ehci-omap and address 2
> <6>usb 1-1: configuration #1 chosen from 1 choice
> usb 1-1: configuration #1 chosen from 1 choice
> 
> address@hidden:~# usrper load_standard_bits
> usrper: found unconfigured usrp; needs firmware.
> <6>usb 1-1: USB disconnect, address 2
> usb 1-1: USB disconnect, address 2
> <6>usb 1-1: new high speed USB device using ehci-omap and address 3
> usb 1-1: new high speed USB device using ehci-omap and address 3
> <6>usb 1-1: configuration #1 chosen from 1 choice
> usb 1-1: configuration #1 chosen from 1 choice
> <7>usb 1-1: usbfs: USBDEVFS_CONTROL failed cmd usrper rqt 64 rq 2 len 64 ret 
> -71
> usb_control_msg failed: error se<7>usb 1-1: usbfs: USBDEVFS_CONTROL
> failed cmd usrper rqt 64 rq 9 len 1 ret -71
> nding control message: Protocol <7>usb 1-1: usbfs: USBDEVFS_CONTROL
> failed cmd usrper rqt 64 rq 9 len 1 ret -71
> error
> usb_control_msg failed: e<7>usb 1-1: usbfs: USBDEVFS_CONTROL failed
> cmd usrper rqt 64 rq 9 len 1 ret -71
> rror sending control message: Pr<7>usb 1-1: usbfs: USBDEVFS_CONTROL
> failed cmd usrper rqt 64 rq 9 len 1 ret -71
> otocol error
> usb_control_msg fa<7>usb 1-1: usbfs: USBDEVFS_CONTROL failed cmd
> usrper rqt 64 rq 9 len 1 ret -71
> iled: error sending control mess<7>usb 1-1: usbfs: USBDEVFS_CONTROL
> failed cmd usrper rqt 64 rq 9 len 1 ret -71
> age: Protocol error
> usb_control_msg failed: error sending control message: Protocol error
> usb_control_msg failed: error sending control message: Protocol error
> usb_control_msg failed: error sending control message: Protocol error
> usb_control_msg failed: error sending control message: Protocol error
> usrp: failed to load fpga bitstream /usr/share/usrp/rev4/std_2rxhb_2tx.rbf.
> usrper: failed
> address@hidden:~#
> 
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