Re: [Discuss-gnuradio] some problems about usrp motherboard that i make by myself

[tonygc]

1 run usrp_benchmark_usb, displays:
    Testing 2MB/sec... uUuUuUuUuUuUuUuUuUuUuUuUuUuUuUuUuUuU
then, nothing goes on.
2 run "usrper load_standard_bits", after seconds, it's finished. no error.
 running all "usrper ..." orders are ok, no error.
3 cyclone is the same as that of USRP. 
thank you for your guide.

Eric Blossom wrote:
> 
> On Fri, Jul 30, 2010 at 12:04:13AM -0700, tonygc wrote:
>> 
>> thank you for your reply, Eric. we tested the motherboard, source code
>> can be
>> loaded into FX2, and usrper can be used to configure something. that
>> means
>> FX2 works well. we use usrp_benchmark_usb to test the board, it doen't
>> work.
> 
> What do you mean by "doesn't work"?  That's very vague.
> 
>> something wrong with FPGA. but the clock of FPGA and ADCs are all OK, and
>> FX2 to FPGA connections are also ok. it seems rbf cann't load to FPGA,
>> why?
>> can you give me some guide? thank you again.
> 
> How do you know that the rbf isn't loaded?
> 
> Does 
> 
>   $ usrper load_standard_bits
> 
> give you some kind of error?
> 
> If you're using a different model of Cyclone, the precompiled rbf
> won't work for you.  You'll need to build one that's appropriate for
> your device.
> 
> Take a look at the Cyclone datasheet and read up on how it's loaded.
> With a logic analyzer, you should be able to watch all the relevant
> signals between the FX2 and Cyclone.  It's been a long time since I
> looked at that datasheet or code, but there's some combination of
> signals that indicates "start loading", "loading completed
> successfully" and "loading failed".
> 
> Eric
> 
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> 

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