ery first DDC that is halving things.
TIA!
From: USRP-users on behalf of Nick Foster
via USRP-users
Sent: Saturday, June 9, 2018 1:12 PM
To: usrp-users
Subject: Re: [USRP-users] RFNoC Overrun Using Split Stream
It's not necessarily a limitation in RFNoC, or at least it seems to be a
reas
It's not necessarily a limitation in RFNoC, or at least it seems to be a
reasonable one; if the bus is to support 2 full-rate streams on a single
block, why not 3, or even 4? To allow multiple streams at full rate you'd
have to either increase the speed of bus_clk relative to ce_clk, or you'd
have
Thanks Juan and Nick. Do you know if this is something RFNoC plans to
address in the future?
I put a DDC in front of the Split Stream block and now I don't see anymore
overrun errors, but I have 2 new problems. First, I can only run the flow
graph one time like Juan described. If I stop it and try
The same solution that works for E310 won't work for X310. The easiest fix
will be to use a DDC block to reduce the sample rate ahead of the Split
Stream block. The RFNoC bus cannot handle two full-rate streams on a single
NoC port.
Nick
On Thu, Jun 7, 2018, 2:44 AM Juan Francisco via USRP-users
Unfortunately I don't have a fix for this, but I have seen similar
behavior. I have only been able to get the SplitStream block on the first
run after an FPGA reconfiguration (or X310 power cycle). If you try
running the flowgraph a second time, it hangs and nothing gets through the
SplitStream.
Hi All,
I have a RFNoC Receiver --> Split stream --> x2 DDC blocks on the X310.
I see a ton of overrun on chan 0 errors after adding the Split Stream block
and GNU Radio Companion eventually crashes all together.
I read about a similar problem on the E310 and the fix was to change the
ce_clk to
