At 09:03 AM 9/14/2005 -0700, Eric Blossom wrote:
On Wed, Sep 14, 2005 at 10:47:01AM -0400, cswiger wrote:
> Two channels input (mux = 0xf0f0f1f0) - can the two
> DDC be phase locked or sync'd ? The phase between them
> appears to jump about at random after a
>
> chan0.set_rx_freq(0,-freq)
> chan1.set_rx_freq(1,-freq)
>
>
>
The phase changes because the two set_rx_freq are not atomic with
respect to each other. It might be possible to disable the given Rx
or Tx side of the USRP, set both of them, and then reenable.
A quick look at usrp_basic.h reveals that I have not exported the
(currently) protected methods set_rx_enable, rx_enable, disable_rx and
restore_rx or the corresponding methods on the tx side. Let me take
a look at that.
Ok, if src = usrp.source_c(0, 128) ) then is the above what src.start()
and src.stop() are? I see usrp_basic_rx::start () has references to
set_rx_enable, etc. It seems to be working.
--Chuck
self.dut_out.stop()
self.dut_out.set_rx_freq(0, -self.frequency)
self.dut_out.set_rx_freq(1, -self.frequency)
self.dut_out.start()
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