[USRP-users] Receiving IO Block Error when Using RFNoC Split Stream

Jonathan Lockhart jlockhartrt at gmail.com
Fri Nov 8 14:24:20 EST 2019


Jonathon,

I will give that a try and see if it works.


Nick,

If the revert on Split_Stream fails, I will try switching from ce_clk to
bus_clk and give that a try.


Regards,
Jon

On Fri, Nov 8, 2019 at 1:52 PM Nick Foster <bistromath at gmail.com> wrote:

> Jonathon (Pendlum), correct me if I'm wrong, but I think this is the usual
> split-stream-demands-more-bandwidth-than-RFNoC-bus-allows problem.
>
> Jonathan (Lockhart), if I'm right, then in your rfnoc_ce_auto_inst_e310.v,
> if you change the ce_clk/ce_rst in the noc_block_split_stream instantiation
> to bus_clk/bus_rst, this may fix the problem.
>
> Nick
>
> On Fri, Nov 8, 2019 at 10:20 AM Jonathon Pendlum <
> jonathon.pendlum at ettus.com> wrote:
>
>> Hi Jon,
>>
>> Can you try reverting commit e39334fe on the fpga repo and rebuilding
>> your bitstream? Let me know if that makes a difference or not.
>>
>> Jonathon
>>
>> On Sat, Nov 9, 2019 at 12:13 AM Jonathan Lockhart via USRP-users <
>> usrp-users at lists.ettus.com> wrote:
>>
>>> Greetings Nick,
>>>
>>> Here is the screenshot of my GR flow graph, though it shouldn't matter
>>> as the Split_Stream RFNoC Block I believe is a failure of the python or
>>> Verilog but the solutions in the link I sent in my previous email did not
>>> resolve the issue.
>>>
>>> [image: Screenshot from 2019-11-08 10-06-50.png]
>>>
>>> Regards,
>>> Jon
>>>
>>> On Thu, Nov 7, 2019 at 5:33 PM Nick Foster <bistromath at gmail.com> wrote:
>>>
>>>> Can you be more specific about what your flowgraph looks like?
>>>>
>>>> On Thu, Nov 7, 2019 at 2:22 PM Jonathan Lockhart via USRP-users <
>>>> usrp-users at lists.ettus.com> wrote:
>>>>
>>>>> Greetings,
>>>>>
>>>>> I was wondering if anyone had encountered the following error and had
>>>>> a way to fix it?
>>>>>
>>>>> [INFO] [UHD] linux; GNU C++ version 4.9.2; Boost_105700;
>>>>> UHD_3.14.1.HEAD-0-g0347a6d8
>>>>> [INFO] [E300] Loading FPGA image: /home/root/localinstall/e300.bit...
>>>>> [INFO] [E300] FPGA image loaded
>>>>> [INFO] [E300] Detecting internal GPS
>>>>> .... [INFO] [E300] GPSDO found
>>>>> [INFO] [E300] Initializing core control (global registers)...
>>>>>
>>>>> [INFO] [E300] Performing register loopback test...
>>>>> [INFO] [E300] Register loopback test passed
>>>>> [INFO] [0/Radio_0] Initializing block control (NOC ID:
>>>>> 0x12AD100000000000)
>>>>> [WARNING] [RFNOC] Can't find a block controller for key SplitStream,
>>>>> using default block controller!
>>>>> [INFO] [0/SplitStream_0] Initializing block control (NOC ID:
>>>>> 0x5757000000000000)
>>>>> [ERROR] [UHD] Exception caught in safe-call.
>>>>>   in ctrl_iface_impl<_endianness>::~ctrl_iface_impl() [with
>>>>> uhd::endianness_t _endianness = (uhd::endianness_t)1u]
>>>>>   at /home/jon/rfnoc_3.14.1.1/src/uhd/host/lib/rfnoc/ctrl_iface.cpp:52
>>>>> this->send_cmd_pkt(0, 0, true); -> EnvironmentError: IOError: Block
>>>>> ctrl (CE_01_Port_21) no response packet - AssertionError: bool(buff)
>>>>>   in uint64_t ctrl_iface_impl<_endianness>::wait_for_ack(bool, double)
>>>>> [with uhd::endianness_t _endianness = (uhd::endianness_t)1u; uint64_t =
>>>>> long long unsigned int]
>>>>>   at /home/jon/rfnoc_3.14.1.1/src/uhd/host/lib/rfnoc/ctrl_iface.cpp:142
>>>>>
>>>>> Traceback (most recent call last):
>>>>>   File "rfnoc_fosphor_network_usrp.py", line 283, in <module>
>>>>>     main()
>>>>>   File "rfnoc_fosphor_network_usrp.py", line 272, in main
>>>>>     tb = top_block_cls(fft_size=options.fft_size,
>>>>> fpga_path=options.fpga_path, freq=options.freq, gain=options.gain,
>>>>> host_ip_addr=options.host_ip_addr, samp_rate=options.samp_rate,
>>>>> tdecay=options.tdecay, trise=options.trise)
>>>>>   File "rfnoc_fosphor_network_usrp.py", line 43, in __init__
>>>>>     self.device3 = variable_uhd_device3_0 =
>>>>> ettus.device3(uhd.device_addr_t( ",".join(('type=e3x0',
>>>>> "master_clock_rate=%d,fpga=%s" % (samp_rate,fpga_path))) ))
>>>>>   File
>>>>> "/home/root/localinstall/usr/lib/python2.7/site-packages/ettus/ettus_swig.py",
>>>>> line 1307, in make
>>>>>     return _ettus_swig.device3_make(*args, **kwargs)
>>>>> RuntimeError: EnvironmentError: IOError: [0/SplitStream_0] sr_read64()
>>>>> failed: EnvironmentError: IOError: Block ctrl (CE_01_Port_21) no response
>>>>> packet - AssertionError: bool(buff)
>>>>>   in uint64_t ctrl_iface_impl<_endianness>::wait_for_ack(bool, double)
>>>>> [with uhd::endianness_t _endianness = (uhd::endianness_t)1u; uint64_t =
>>>>> long long unsigned int]
>>>>>   at /home/jon/rfnoc_3.14.1.1/src/uhd/host/lib/rfnoc/ctrl_iface.cpp:142
>>>>>
>>>>> This is only occurring when I use the split stream block in RFNoC. I
>>>>> have tried the fixes in [1] but unfortunately they have not helped. Also,
>>>>> fix 1, I can't seem to before b/c I am missing the file
>>>>> rfnoc_ce_auto_inst_<device>.v  as shown from the output when
>>>>> attempting a "find" command in Ubuntu.
>>>>>
>>>>> find: ‘rfnoc_ce_auto_inst_e310.v’: No such file or directory
>>>>>
>>>>> I ran it on both ~/* and /* with no luck.
>>>>>
>>>>> Regards,
>>>>> Jon Lockhart
>>>>>
>>>>> [1]
>>>>> https://kb.ettus.com/RFNoC#Why_do_I_have_a_command_timeout_error.3F
>>>>>
>>>>> _______________________________________________
>>>>> USRP-users mailing list
>>>>> USRP-users at lists.ettus.com
>>>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>>>>>
>>>> _______________________________________________
>>> USRP-users mailing list
>>> USRP-users at lists.ettus.com
>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>>>
>>
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