davorin
Posts: 167
Joined: Tue Sep 11, 2012 2:07 pm
Location: Switzerland
Contact: Website

Re: Compute module not talking

Wed Aug 20, 2014 2:38 pm

Got the two replacement boards now...

Both look the same when plugging in....not enumerated when plugging them in....

Now trying with an RPi as host...but I assume it won't succeed....

davorin
Posts: 167
Joined: Tue Sep 11, 2012 2:07 pm
Location: Switzerland
Contact: Website

Re: Compute module not talking

Wed Aug 20, 2014 3:57 pm

Weird....though it also complained about read errors when plugging in the compute module on RPi the "dd" went fine this time:

Code: Select all

[email protected]:/home/pi# time dd if=2014-06-20-wheezy-raspbian.img of=/dev/sda bs=4MiB
706+1 records in
706+1 records out
2962227200 bytes (3.0 GB) copied, 504.884 s, 5.9 MB/s

real	8m24.926s
user	0m0.050s
sys	1m3.290s

davorin
Posts: 167
Joined: Tue Sep 11, 2012 2:07 pm
Location: Switzerland
Contact: Website

Re: Compute module not talking

Wed Aug 20, 2014 7:38 pm

First one passed the test :-)

Quite impressed about low current consumption with plugged in ethernet adapter and playing back a h264 movie via NFS...
not much difference between playing with omxplayer and being idle...

The current consumption was measured with GPIB from a 6632B, which also powers the dev kit...
Attachments
rpidevkit_cpu.png
rpidevkit_cpu.png (22.03 KiB) Viewed 777 times
rpidevkit_traffic.png
rpidevkit_traffic.png (19.93 KiB) Viewed 777 times
rpidevkit_current.png
rpidevkit_current.png (13.36 KiB) Viewed 778 times

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