SV: [Discuss-gnuradio] usrp2::rx_samples() failed when switching rx_path using the latest git_trunk

[Patrik Eliardsson]

Hi again,

We have written a small example that triggers this error (see the attached 
files). From what we have figured out so far, the error arise from the result 
of the p->wait_for_completion command in the transmit_cmd_and_wait function in 
the usrp2_impl.cc

Be aware of the center_freq and the interface in the *_path files so it fits 
your configuration.

Does anyone have a clue?

br,
Patrik
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Från: address@hidden address@hidden för Patrik Eliardsson address@hidden
Skickat: den 2 september 2010 15:39
Till: address@hidden
Ämne: [Discuss-gnuradio] usrp2::rx_samples() failed when switching rx_path 
using the latest git_trunk

Hi,

What could be the reason for this error?

"usrp2: channel 0 not receiving
usrp2::rx_samples() failed"

>From some previously post, Johnathan said that this should be fixed in 
>releases after 3.2.2

I'm using the latest git trunk version, I've change the firmware (to 
txrx_raw_eth_20100608.bin) and the fpga image (to u2_rev3-20100603.bin) (I am 
using USRP2 + RFX2400). And the error still occur! Why?

My top_block basically contains a usrp2_sink and a usrp2_source block and a 
rx_path and a tx_path. The rx_path and the tx_path are changed during runtime 
with the following sequence:

top_block.lock()
top_block.disconnect()
top_block.connect()
top_block.unlock()

The error occurs after a random number of switches of the different paths 
(sometimes it works for 30 switches and sometimes just for 3) and the program 
requires a restart to get rid of the problem.

Br,

Patrik Eliardsson

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isolate.py
Description: isolate.py

isolate_rx_path.py
Description: isolate_rx_path.py

isolate_tx_path.py
Description: isolate_tx_path.py