On 2022-02-07 18:22, Rob Kossler wrote:
Hi,
What does the following error mean for an E320? In my application, I
want 1Tx and 2Rx.
[ERROR] [0/Radio#0] Invalid channel configuration: This device does
not support 1 TX x 2 RX or 2 TX x 1 RX configurations!
Error: RuntimeError: Invalid channel configuration: This device does
not support 1 TX x 2 RX or 2 TX x 1 RX configurations!
Does this mean that I simply need an RFNoC graph that is 2x2 to the
radio - even if I don't initiate any streaming to the 2nd un-needed Tx
radio? Or do I also need to actively stream samples (e.g., zeros) to
the 2nd un-needed Tx radio.
Rob
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Since the E320 is based on the AD9361, the TX/RX configs are somewhat
constrained, due to the way the data interface to the AD9361 works.
You'll need to stream zeros--at least that's the way it is with B2xx and
E310 devices, which use the same AD9361 RFFE chip.
Granted, this *could* be taken care of with the drivers and FPGA
cooperating to make it more "beautifully generalized", but the
constraints of the AD9361 chip
data interface are "exposed".
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