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Re: [Discuss-gnuradio] Can't set center frequency of USRP2 w/DBSRX
From: |
Moeller |
Subject: |
Re: [Discuss-gnuradio] Can't set center frequency of USRP2 w/DBSRX |
Date: |
Thu, 12 Aug 2010 07:28:24 +0200 |
User-agent: |
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2 |
On 11.08.2010 23:11, Marcus D. Leech wrote:
> In Linux, I/O to "disk-like devices" uses write-behind caching. Which
> means that although your application has sent the data to the
> kernel, and it has been accepted, it may not actually get written out
> to disk. This improves performance in many types of
I was aware of this problem, but ...
> Using the "sync" command generally arranges for all pending writes to
> disk-like devices to get flushed to the hardware, so I generally
> do a "sync" before pulling the SD card. The script that does the
> flashing should probably issue a "sync" when it's done.
the SD-usrp2_card_burner had a 2-stage process: first writing the image,
second verifying if the SD-card was correctly written.
In usrp2_card_burner.py you fill find this line:
if platform.system() == 'Linux': command('sync')
So, it should have been in sync after burning.
But it's too late now, I can't reconstruct all exactly any more.
At least the DBSRX is working now.
Moeller