[casper] SIOCGIFFLAGS: no such devices

[Luca Finazzi]

Dear all,

I'm facing the problem in the object. Today I unplugged my laptop charger
from the same power line of the board..I saw a small spark and everything
rebooted.
So I tried to reconnect the board with mini com, but I get a different IP
and if I type

ifconfig  up

As usually, I get the error:

SIOCGIFFLAGS: no such devices

Can you please help me?
I'm a visiting student, and I'm going to come back to my country next
week..I absolutely need to take the last data.

Thank you so much,
Luca.

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Re: [casper] ROACH2 won't power on

[Jason Manley]

I take it you've got an iStar/Xeal supply? We had so many failures of those 
that we've retrofitted over 100 of our ROACH2s! 

We even contacted the manufacturer, because their quoted MTBF is simply not 
believable with the fitted sleeved fans. They offered to replace the failed 
supplies with the same units and offered no explanation for the early failures 
en-mass, nor how they obtained their MTBF specification.

We now use FSP250-60FAG, and have not had a single failure yet. See Alec's 
email in the mail archive from 6 July 2016.

Jason

On 08 May 2017, at 18:31, G Jones  wrote:

> Hi,
> To follow up on this, I confirmed that the power supply had indeed failed. 
> The fan was completely seized up. I also checked C163 out of an abundance of 
> caution (thanks, Jason, for the notes!) and it seemed fine. Replacing the 
> power supply brought he ROACH2 back to life.
> 
> Thanks,
> Glenn
> 
> On Mon, May 8, 2017 at 8:33 AM, Jason Ray  wrote:
> Hi Glenn,
> 
> A while back, I repaired a roach2 problem that had similar symptoms.  Its 
> probably not terribly likely that yours has the same problem, but I thought 
> I'd share in case...
> 
> The short story is that a capacitor (C163) failed and I could measure 
> ~220ohms across it.  This particular cap is part of the soft reset circuitry 
> associated with switch S1, and was pulling down the signal, holding the 
> roach2 in reset.
> 
> I removed that capacitor and saw pretty major evidence of re-work in that 
> area (missing pads & traces, small wires from nearby vias, etc).  We never 
> use the soft reset switch on the board, so I just removed all of those parts 
> and the roach2 board now functions as it should.
> 
> Good luck!
> Jason
> 
> 
> 
> 
> On 5/5/2017 4:45 PM, G Jones wrote:
>> Hi,
>> Our ROACH2 suddenly failed recently. The symptom is that it won't power on. 
>> The green AUX power LED is on and the red FAULT LED is on. Pressing the 
>> power button and the reset button does nothing. 
>> 
>> Looking back at the archives, I see that the standard ROACH2 power supply is 
>> known to fail after overheating. Is this a symptom of that failure? I will 
>> try another power supply shortly, but I'm curious if others have seen this 
>> symptom before.
>> 
>> Thanks,
>> Glenn
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Re: [casper] ROACH2 won't power on

[G Jones]

Hi,
To follow up on this, I confirmed that the power supply had indeed failed.
The fan was completely seized up. I also checked C163 out of an abundance
of caution (thanks, Jason, for the notes!) and it seemed fine. Replacing
the power supply brought he ROACH2 back to life.

Thanks,
Glenn

On Mon, May 8, 2017 at 8:33 AM, Jason Ray  wrote:

> Hi Glenn,
>
> A while back, I repaired a roach2 problem that had similar symptoms.  Its
> probably not terribly likely that yours has the same problem, but I thought
> I'd share in case...
>
> The short story is that a capacitor (C163) failed and I could measure
> ~220ohms across it.  This particular cap is part of the soft reset
> circuitry associated with switch S1, and was pulling down the signal,
> holding the roach2 in reset.
>
> I removed that capacitor and saw pretty major evidence of re-work in that
> area (missing pads & traces, small wires from nearby vias, etc).  We never
> use the soft reset switch on the board, so I just removed all of those
> parts and the roach2 board now functions as it should.
>
> Good luck!
> Jason
>
>
>
>
> On 5/5/2017 4:45 PM, G Jones wrote:
>
> Hi,
> Our ROACH2 suddenly failed recently. The symptom is that it won't power
> on. The green AUX power LED is on and the red FAULT LED is on. Pressing the
> power button and the reset button does nothing.
>
> Looking back at the archives, I see that the standard ROACH2 power supply
> is known to fail after overheating. Is this a symptom of that failure? I
> will try another power supply shortly, but I'm curious if others have seen
> this symptom before.
>
> Thanks,
> Glenn
> --
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>
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Re: [casper] katadc help in simulink

[James Smith]

Hello Heystek,

It's probably better practice to use software registers (or you could just
use one register for all four inputs and slice it out), but you should also
have been able to use Xilinx constants, that should have compiled.

Regards,
James


On Mon, May 8, 2017 at 3:33 PM, Heystek Grobler 
wrote:

> Hi James
>
> Thanks for the help!! I had to add software registers to en0 and en1 as
> well but know it compiles.
>
> Thanks for the help!!
>
> I really apreciate it
>
> Heystek
>
> On Mon, May 8, 2017 at 2:23 PM, James Smith  wrote:
>
>> Hello Heystek,
>>
>> The KatADC is described here:
>> https://casper.berkeley.edu/wiki/KatADC
>>
>> It's got two channels which you need to enable if you want to use them,
>> and 31.5 dB variable attenuators which you need to set.
>>
>> So if you want them to be on all the time, just hard-wire some 1s into
>> en0 and en1. I'd suggest putting software registers into atten0 and atten1
>> then writing to them from a Python script. You can adjust the attenuation
>> from 0 dB to 31.5 dB in 0.5 dB increments using a 5-bit number.
>>
>> Regards,
>> James
>>
>>
>>
>> On Mon, May 8, 2017 at 2:17 PM, Heystek Grobler > > wrote:
>>
>>> Good day everyone
>>>
>>> I have a ROACH1 board with a katadc. I have located the katadc under the
>>> CAPER XPS Blockset (I am trying to do tut3). I have swapped the iadc for
>>> the katadc.
>>>
>>> The problem is, the katadc has the following inputs:
>>> en0
>>> atten0
>>> en1
>>> atten1
>>>
>>> I need to connect something to those inputs to be able to compile a bof
>>> file. Does anyone perhaps know what inputs I should connect/use?
>>>
>>> Have a great day
>>>
>>> Thanks for the help
>>>
>>> Heystek Grobler
>>>
>>>
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>>>
>>
>>
>

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Re: [casper] katadc help in simulink

[Heystek Grobler]

Hi James

Thanks for the help!! I had to add software registers to en0 and en1 as
well but know it compiles.

Thanks for the help!!

I really apreciate it

Heystek

On Mon, May 8, 2017 at 2:23 PM, James Smith  wrote:

> Hello Heystek,
>
> The KatADC is described here:
> https://casper.berkeley.edu/wiki/KatADC
>
> It's got two channels which you need to enable if you want to use them,
> and 31.5 dB variable attenuators which you need to set.
>
> So if you want them to be on all the time, just hard-wire some 1s into en0
> and en1. I'd suggest putting software registers into atten0 and atten1 then
> writing to them from a Python script. You can adjust the attenuation from 0
> dB to 31.5 dB in 0.5 dB increments using a 5-bit number.
>
> Regards,
> James
>
>
>
> On Mon, May 8, 2017 at 2:17 PM, Heystek Grobler 
> wrote:
>
>> Good day everyone
>>
>> I have a ROACH1 board with a katadc. I have located the katadc under the
>> CAPER XPS Blockset (I am trying to do tut3). I have swapped the iadc for
>> the katadc.
>>
>> The problem is, the katadc has the following inputs:
>> en0
>> atten0
>> en1
>> atten1
>>
>> I need to connect something to those inputs to be able to compile a bof
>> file. Does anyone perhaps know what inputs I should connect/use?
>>
>> Have a great day
>>
>> Thanks for the help
>>
>> Heystek Grobler
>>
>>
>> --
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>> "casper@lists.berkeley.edu" group.
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>> email to casper+unsubscr...@lists.berkeley.edu.
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>>
>
>

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Re: [casper] ROACH2 won't power on

[Jason Ray]

Hi Glenn,

A while back, I repaired a roach2 problem that had similar symptoms.  
Its probably not terribly likely that yours has the same problem, but I 
thought I'd share in case...


The short story is that a capacitor (C163) failed and I could measure 
~220ohms across it.  This particular cap is part of the soft reset 
circuitry associated with switch S1, and was pulling down the signal, 
holding the roach2 in reset.


I removed that capacitor and saw pretty major evidence of re-work in 
that area (missing pads & traces, small wires from nearby vias, etc).  
We never use the soft reset switch on the board, so I just removed all 
of those parts and the roach2 board now functions as it should.


Good luck!
Jason



On 5/5/2017 4:45 PM, G Jones wrote:

Hi,
Our ROACH2 suddenly failed recently. The symptom is that it won't 
power on. The green AUX power LED is on and the red FAULT LED is on. 
Pressing the power button and the reset button does nothing.


Looking back at the archives, I see that the standard ROACH2 power 
supply is known to fail after overheating. Is this a symptom of that 
failure? I will try another power supply shortly, but I'm curious if 
others have seen this symptom before.


Thanks,
Glenn
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Re: [casper] katadc help in simulink

[James Smith]

Hello Heystek,

The KatADC is described here:
https://casper.berkeley.edu/wiki/KatADC

It's got two channels which you need to enable if you want to use them, and
31.5 dB variable attenuators which you need to set.

So if you want them to be on all the time, just hard-wire some 1s into en0
and en1. I'd suggest putting software registers into atten0 and atten1 then
writing to them from a Python script. You can adjust the attenuation from 0
dB to 31.5 dB in 0.5 dB increments using a 5-bit number.

Regards,
James



On Mon, May 8, 2017 at 2:17 PM, Heystek Grobler 
wrote:

> Good day everyone
>
> I have a ROACH1 board with a katadc. I have located the katadc under the
> CAPER XPS Blockset (I am trying to do tut3). I have swapped the iadc for
> the katadc.
>
> The problem is, the katadc has the following inputs:
> en0
> atten0
> en1
> atten1
>
> I need to connect something to those inputs to be able to compile a bof
> file. Does anyone perhaps know what inputs I should connect/use?
>
> Have a great day
>
> Thanks for the help
>
> Heystek Grobler
>
>
> --
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> casper@lists.berkeley.edu" group.
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> email to casper+unsubscr...@lists.berkeley.edu.
> To post to this group, send email to casper@lists.berkeley.edu.
>

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[casper] katadc help in simulink

[Heystek Grobler]

Good day everyone

I have a ROACH1 board with a katadc. I have located the katadc under the
CAPER XPS Blockset (I am trying to do tut3). I have swapped the iadc for
the katadc.

The problem is, the katadc has the following inputs:
en0
atten0
en1
atten1

I need to connect something to those inputs to be able to compile a bof
file. Does anyone perhaps know what inputs I should connect/use?

Have a great day

Thanks for the help

Heystek Grobler

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