[USRP-users] E312 - Migrating OOT Modules to the USRP

Jonathan Lockhart jlockhartrt at gmail.com
Fri Nov 22 14:52:28 EST 2019


Well that did do the trick, can't believe I missed that earlier, thanks for
spotting that EJ.

Now I got a new error. The check for the value of gain is failing, yet the
default valued loaded should be 1.0 if you look at the XML file. Here is
the error.

[TRACE] [RFNOC] [NocScript] Executing and asserting code: GE($gain, 0.0)
AND LE($gain, 32767.0)
Traceback (most recent call last):
  File "rfnoc_myGain_usrp.py", line 223, in <module>
    main()
  File "rfnoc_myGain_usrp.py", line 212, in main
    tb = top_block_cls(fpga_path=options.fpga_path,
host_ip_addr=options.host_ip_addr, rx_digital_gain=options.rx_digital_gain,
rx_freq=options.rx_freq, rx_gain=options.rx_gain)
  File "rfnoc_myGain_usrp.py", line 117, in __init__
    self.tutorial_gain_0.set_arg("gain", rx_digital_gain)
  File
"/home/root/newinstall/usr/lib/python2.7/site-packages/tutorial/tutorial_swig.py",
line 315, in set_arg
    return _tutorial_swig.gain_sptr_set_arg(self, *args)
RuntimeError: RuntimeError: [NocScript] Error: Invalid Gain!

So the check message is firing b/c it failed the check, from my
understanding, but 1.0 as a double is GE to 0.0 and LE to 32767.0. In
running the alternate bit file with the "digital gain" RFNoC block from the
gr-ettus files, it also gives the same failure.


On Fri, Nov 22, 2019 at 2:05 PM Jonathan Lockhart <jlockhartrt at gmail.com>
wrote:

> Well then, ran right over that in my troubleshooting. I am building a new
> bit file now to validate the change to the XML as I had moved on to
> something else.
>
> I will reply with the results.
>
> -Jon
>
> On Fri, Nov 22, 2019 at 1:12 PM EJ Kreinar <ejkreinar at gmail.com> wrote:
>
>> Oh!
>>
>> I suspect you want...
>>
>> <args>
>>   <arg>
>>     ...
>>   </arg>
>> </args>
>>
>> (Rather than two nested "args")
>>
>> That ought to do it...
>> EJ
>>
>> On Fri, Nov 22, 2019, 11:55 AM Jonathan Lockhart <jlockhartrt at gmail.com>
>> wrote:
>>
>>> So here is the trace for the gain block, and it certainly is loading the
>>> right XML file it seems. 🤔
>>>
>>> [DEBUG] [RFNOC] Reading XML file
>>> /home/root/newinstall/usr/share/uhd/rfnoc/blocks/gain.xml for NOC ID
>>> 0xB7DD64941A952AAC
>>> [TRACE] [RFNOC] [RFNoC Factory] block_ctrl_base::make()
>>> [DEBUG] [RFNOC] Reading XML file
>>> /home/root/newinstall/usr/share/uhd/rfnoc/blocks/gain.xml for NOC ID
>>> 0xB7DD64941A952AAC
>>> [TRACE] [RFNOC] [RFNoC Factory] Using controller key 'gain' and block
>>> name 'gain'
>>> [DEBUG] [RFNOC] Reading XML file
>>> /home/root/newinstall/usr/share/uhd/rfnoc/blocks/gain.xml for NOC ID
>>> 0xB7DD64941A952AAC
>>> [INFO] [0/gain_0] Initializing block control (NOC ID: 0xB7DD64941A952AAC)
>>> [DEBUG] [0/gain_0] Checking compat number for FPGA component
>>> `noc_shell': Expecting 5.1, actual: 5.1.
>>> [TRACE] [0/gain_0] Adding port definition at xbar/gain_0/ports/in/0:
>>> type = 'sc16' pkt_size = '0' vlen = '0'
>>> [TRACE] [0/gain_0] Adding port definition at xbar/gain_0/ports/out/0:
>>> type = 'sc16' pkt_size = '0' vlen = '0'
>>> [DEBUG] [E300] [E300] Setting up dest map for host ep 112 to be stream 3
>>>
>>> However I don't show it instantiating any of the args. I did vim the
>>> file and it appears correct (output below).
>>>
>>> <?xml version="1.0"?>
>>> <!--Default XML file-->
>>> <nocblock>
>>>   <name>gain</name>
>>>   <blockname>gain</blockname>
>>>   <ids>
>>>     <id revision="0">B7DD64941A952AAC</id>
>>>   </ids>
>>>   <!-- Registers -->
>>>   <registers>
>>>     <setreg>
>>>       <name>GAIN</name>
>>>       <address>128</address>
>>>     </setreg>
>>>   </registers>
>>>   <!-- Args -->
>>>   <args>
>>>     <args>
>>>       <name>gain</name>
>>>       <type>double</type>
>>>       <value>1.0</value>
>>>       <check>GE($gain, 0.0) AND LE($gain, 32767.0)</check>
>>>       <check_message>Invalid Gain!</check_message>
>>>       <action>
>>>         SR_WRITE("GAIN", IROUND($gain))
>>>       </action>
>>>     </args>
>>>   </args>
>>>   <!--One input, one output. If this is used, better have all the info
>>> the C++ file.-->
>>>   <ports>
>>>     <sink>
>>>       <name>in0</name>
>>>       <type>sc16</type>
>>>     </sink>
>>>     <source>
>>>       <name>out0</name>
>>>       <type>sc16</type>
>>>     </source>
>>>   </ports>
>>> </nocblock>
>>>
>>>
>>> Regards,
>>> Jon
>>>
>>>
>>>
>>> On Fri, Nov 22, 2019 at 10:51 AM Jonathan Lockhart <
>>> jlockhartrt at gmail.com> wrote:
>>>
>>>> NVM, I got it set. I am teasing through the long console output now.
>>>> Might of wanted to set the file log instead. Live and learn.
>>>>
>>>> On Fri, Nov 22, 2019 at 10:20 AM EJ Kreinar <ejkreinar at gmail.com>
>>>> wrote:
>>>>
>>>>> Good progress, agreed it looks like the gain arg isn't getting created
>>>>> here...
>>>>>
>>>>> If you run with log level trace, rfnoc should (might?) indicate the
>>>>> xml file it loaded. I'd try to find that xml and confirm it looks like what
>>>>> you expect, with the gain arg entry.
>>>>>
>>>>> Also, perhaps grep your prefix and share directories on the embedded
>>>>> device to search for any other xml files that might match the noc id or
>>>>> provide the same "gain" block... I've definitely fought with conflicting
>>>>> xml definitions before, you might be seeing that here.
>>>>>
>>>>> EJ
>>>>>
>>>>> On Fri, Nov 22, 2019, 9:36 AM Jonathan Lockhart <jlockhartrt at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> Hey EJ,
>>>>>>
>>>>>> Sorry for being slow I had to dig around to set that UHD Log
>>>>>> variable, which easy enough it was just a simple export. I then ran
>>>>>> uhd_usrp_probe with the --tree and setting the fpga to my bit file. Here is
>>>>>> the output from the probe.
>>>>>>
>>>>>> root at ettus-e3xx-sg3:~# uhd_usrp_probe
>>>>>> --args="fpga=./newinstall/e300.bit" --tree
>>>>>> [INFO] [UHD] linux; GNU C++ version 4.9.2; Boost_105700;
>>>>>> UHD_3.14.1.HEAD-0-g0347a6d8
>>>>>> [INFO] [E300] Loading FPGA image: ./newinstall/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 gain, using
>>>>>> default block controller!
>>>>>> [INFO] [0/gain_0] Initializing block control (NOC ID:
>>>>>> 0xB7DD64941A952AAC)
>>>>>> [INFO] [0/DDC_0] Initializing block control (NOC ID:
>>>>>> 0xDDC0000000000000)
>>>>>> [WARNING] [RFNOC] Can't find a block controller for key FFT, using
>>>>>> default block controller!
>>>>>> [INFO] [0/FFT_0] Initializing block control (NOC ID:
>>>>>> 0xFF70000000000000)
>>>>>> /
>>>>>> /name
>>>>>> /mboards
>>>>>> /mboards/0
>>>>>> /mboards/0/name
>>>>>> /mboards/0/codename
>>>>>> /mboards/0/fpga_version
>>>>>> /mboards/0/fpga_version_hash
>>>>>> /mboards/0/clock_source
>>>>>> /mboards/0/clock_source/value
>>>>>> /mboards/0/clock_source/options
>>>>>> /mboards/0/sensors
>>>>>> /mboards/0/sensors/temp
>>>>>> /mboards/0/sensors/ref_locked
>>>>>> /mboards/0/sensors/gps_locked
>>>>>> /mboards/0/sensors/gps_time
>>>>>> /mboards/0/sensors/gps_position
>>>>>> /mboards/0/sensors/gps_gpgga
>>>>>> /mboards/0/sensors/gps_gprmc
>>>>>> /mboards/0/eeprom
>>>>>> /mboards/0/dboards
>>>>>> /mboards/0/dboards/A
>>>>>> /mboards/0/dboards/A/rx_eeprom
>>>>>> /mboards/0/dboards/A/tx_eeprom
>>>>>> /mboards/0/dboards/A/gdb_eeprom
>>>>>> /mboards/0/dboards/A/rx_frontends
>>>>>> /mboards/0/dboards/A/rx_frontends/A
>>>>>> /mboards/0/dboards/A/rx_frontends/A/name
>>>>>> /mboards/0/dboards/A/rx_frontends/A/sensors
>>>>>> /mboards/0/dboards/A/rx_frontends/A/sensors/temp
>>>>>> /mboards/0/dboards/A/rx_frontends/A/sensors/rssi
>>>>>> /mboards/0/dboards/A/rx_frontends/A/sensors/lo_locked
>>>>>> /mboards/0/dboards/A/rx_frontends/A/gains
>>>>>> /mboards/0/dboards/A/rx_frontends/A/gains/PGA
>>>>>> /mboards/0/dboards/A/rx_frontends/A/gains/PGA/range
>>>>>> /mboards/0/dboards/A/rx_frontends/A/gains/PGA/value
>>>>>> /mboards/0/dboards/A/rx_frontends/A/connection
>>>>>> /mboards/0/dboards/A/rx_frontends/A/enabled
>>>>>> /mboards/0/dboards/A/rx_frontends/A/use_lo_offset
>>>>>> /mboards/0/dboards/A/rx_frontends/A/bandwidth
>>>>>> /mboards/0/dboards/A/rx_frontends/A/bandwidth/value
>>>>>> /mboards/0/dboards/A/rx_frontends/A/bandwidth/range
>>>>>> /mboards/0/dboards/A/rx_frontends/A/freq
>>>>>> /mboards/0/dboards/A/rx_frontends/A/freq/range
>>>>>> /mboards/0/dboards/A/rx_frontends/A/freq/value
>>>>>> /mboards/0/dboards/A/rx_frontends/A/dc_offset
>>>>>> /mboards/0/dboards/A/rx_frontends/A/dc_offset/enable
>>>>>> /mboards/0/dboards/A/rx_frontends/A/iq_balance
>>>>>> /mboards/0/dboards/A/rx_frontends/A/iq_balance/enable
>>>>>> /mboards/0/dboards/A/rx_frontends/A/gain
>>>>>> /mboards/0/dboards/A/rx_frontends/A/gain/agc
>>>>>> /mboards/0/dboards/A/rx_frontends/A/gain/agc/enable
>>>>>> /mboards/0/dboards/A/rx_frontends/A/gain/agc/mode
>>>>>> /mboards/0/dboards/A/rx_frontends/A/gain/agc/mode/value
>>>>>> /mboards/0/dboards/A/rx_frontends/A/gain/agc/mode/options
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters/DEC_3
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters/DEC_3/value
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters/FIR_1
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters/FIR_1/value
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters/HB_1
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters/HB_1/value
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters/HB_2
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters/HB_2/value
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters/HB_3
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters/HB_3/value
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters/LPF_BB
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters/LPF_BB/value
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters/LPF_TIA
>>>>>> /mboards/0/dboards/A/rx_frontends/A/filters/LPF_TIA/value
>>>>>> /mboards/0/dboards/A/rx_frontends/A/antenna
>>>>>> /mboards/0/dboards/A/rx_frontends/A/antenna/options
>>>>>> /mboards/0/dboards/A/rx_frontends/A/antenna/value
>>>>>> /mboards/0/dboards/A/rx_frontends/B
>>>>>> /mboards/0/dboards/A/rx_frontends/B/name
>>>>>> /mboards/0/dboards/A/rx_frontends/B/sensors
>>>>>> /mboards/0/dboards/A/rx_frontends/B/sensors/temp
>>>>>> /mboards/0/dboards/A/rx_frontends/B/sensors/rssi
>>>>>> /mboards/0/dboards/A/rx_frontends/B/sensors/lo_locked
>>>>>> /mboards/0/dboards/A/rx_frontends/B/gains
>>>>>> /mboards/0/dboards/A/rx_frontends/B/gains/PGA
>>>>>> /mboards/0/dboards/A/rx_frontends/B/gains/PGA/range
>>>>>> /mboards/0/dboards/A/rx_frontends/B/gains/PGA/value
>>>>>> /mboards/0/dboards/A/rx_frontends/B/connection
>>>>>> /mboards/0/dboards/A/rx_frontends/B/enabled
>>>>>> /mboards/0/dboards/A/rx_frontends/B/use_lo_offset
>>>>>> /mboards/0/dboards/A/rx_frontends/B/bandwidth
>>>>>> /mboards/0/dboards/A/rx_frontends/B/bandwidth/value
>>>>>> /mboards/0/dboards/A/rx_frontends/B/bandwidth/range
>>>>>> /mboards/0/dboards/A/rx_frontends/B/freq
>>>>>> /mboards/0/dboards/A/rx_frontends/B/freq/range
>>>>>> /mboards/0/dboards/A/rx_frontends/B/freq/value
>>>>>> /mboards/0/dboards/A/rx_frontends/B/dc_offset
>>>>>> /mboards/0/dboards/A/rx_frontends/B/dc_offset/enable
>>>>>> /mboards/0/dboards/A/rx_frontends/B/iq_balance
>>>>>> /mboards/0/dboards/A/rx_frontends/B/iq_balance/enable
>>>>>> /mboards/0/dboards/A/rx_frontends/B/gain
>>>>>> /mboards/0/dboards/A/rx_frontends/B/gain/agc
>>>>>> /mboards/0/dboards/A/rx_frontends/B/gain/agc/enable
>>>>>> /mboards/0/dboards/A/rx_frontends/B/gain/agc/mode
>>>>>> /mboards/0/dboards/A/rx_frontends/B/gain/agc/mode/value
>>>>>> /mboards/0/dboards/A/rx_frontends/B/gain/agc/mode/options
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters/DEC_3
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters/DEC_3/value
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters/FIR_1
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters/FIR_1/value
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters/HB_1
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters/HB_1/value
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters/HB_2
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters/HB_2/value
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters/HB_3
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters/HB_3/value
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters/LPF_BB
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters/LPF_BB/value
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters/LPF_TIA
>>>>>> /mboards/0/dboards/A/rx_frontends/B/filters/LPF_TIA/value
>>>>>> /mboards/0/dboards/A/rx_frontends/B/antenna
>>>>>> /mboards/0/dboards/A/rx_frontends/B/antenna/options
>>>>>> /mboards/0/dboards/A/rx_frontends/B/antenna/value
>>>>>> /mboards/0/dboards/A/tx_frontends
>>>>>> /mboards/0/dboards/A/tx_frontends/A
>>>>>> /mboards/0/dboards/A/tx_frontends/A/name
>>>>>> /mboards/0/dboards/A/tx_frontends/A/sensors
>>>>>> /mboards/0/dboards/A/tx_frontends/A/sensors/temp
>>>>>> /mboards/0/dboards/A/tx_frontends/A/sensors/lo_locked
>>>>>> /mboards/0/dboards/A/tx_frontends/A/gains
>>>>>> /mboards/0/dboards/A/tx_frontends/A/gains/PGA
>>>>>> /mboards/0/dboards/A/tx_frontends/A/gains/PGA/range
>>>>>> /mboards/0/dboards/A/tx_frontends/A/gains/PGA/value
>>>>>> /mboards/0/dboards/A/tx_frontends/A/connection
>>>>>> /mboards/0/dboards/A/tx_frontends/A/enabled
>>>>>> /mboards/0/dboards/A/tx_frontends/A/use_lo_offset
>>>>>> /mboards/0/dboards/A/tx_frontends/A/bandwidth
>>>>>> /mboards/0/dboards/A/tx_frontends/A/bandwidth/value
>>>>>> /mboards/0/dboards/A/tx_frontends/A/bandwidth/range
>>>>>> /mboards/0/dboards/A/tx_frontends/A/freq
>>>>>> /mboards/0/dboards/A/tx_frontends/A/freq/range
>>>>>> /mboards/0/dboards/A/tx_frontends/A/freq/value
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters/FIR_1
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters/FIR_1/value
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters/HB_1
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters/HB_1/value
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters/HB_2
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters/HB_2/value
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters/HB_3
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters/HB_3/value
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters/INT_3
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters/INT_3/value
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters/LPF_BB
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters/LPF_BB/value
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters/LPF_SECONDARY
>>>>>> /mboards/0/dboards/A/tx_frontends/A/filters/LPF_SECONDARY/value
>>>>>> /mboards/0/dboards/A/tx_frontends/A/antenna
>>>>>> /mboards/0/dboards/A/tx_frontends/A/antenna/options
>>>>>> /mboards/0/dboards/A/tx_frontends/A/antenna/value
>>>>>> /mboards/0/dboards/A/tx_frontends/B
>>>>>> /mboards/0/dboards/A/tx_frontends/B/name
>>>>>> /mboards/0/dboards/A/tx_frontends/B/sensors
>>>>>> /mboards/0/dboards/A/tx_frontends/B/sensors/temp
>>>>>> /mboards/0/dboards/A/tx_frontends/B/sensors/lo_locked
>>>>>> /mboards/0/dboards/A/tx_frontends/B/gains
>>>>>> /mboards/0/dboards/A/tx_frontends/B/gains/PGA
>>>>>> /mboards/0/dboards/A/tx_frontends/B/gains/PGA/range
>>>>>> /mboards/0/dboards/A/tx_frontends/B/gains/PGA/value
>>>>>> /mboards/0/dboards/A/tx_frontends/B/connection
>>>>>> /mboards/0/dboards/A/tx_frontends/B/enabled
>>>>>> /mboards/0/dboards/A/tx_frontends/B/use_lo_offset
>>>>>> /mboards/0/dboards/A/tx_frontends/B/bandwidth
>>>>>> /mboards/0/dboards/A/tx_frontends/B/bandwidth/value
>>>>>> /mboards/0/dboards/A/tx_frontends/B/bandwidth/range
>>>>>> /mboards/0/dboards/A/tx_frontends/B/freq
>>>>>> /mboards/0/dboards/A/tx_frontends/B/freq/range
>>>>>> /mboards/0/dboards/A/tx_frontends/B/freq/value
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters/FIR_1
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters/FIR_1/value
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters/HB_1
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters/HB_1/value
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters/HB_2
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters/HB_2/value
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters/HB_3
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters/HB_3/value
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters/INT_3
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters/INT_3/value
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters/LPF_BB
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters/LPF_BB/value
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters/LPF_SECONDARY
>>>>>> /mboards/0/dboards/A/tx_frontends/B/filters/LPF_SECONDARY/value
>>>>>> /mboards/0/dboards/A/tx_frontends/B/antenna
>>>>>> /mboards/0/dboards/A/tx_frontends/B/antenna/options
>>>>>> /mboards/0/dboards/A/tx_frontends/B/antenna/value
>>>>>> /mboards/0/global_regs
>>>>>> /mboards/0/global_regs/misc
>>>>>> /mboards/0/global_regs/pll
>>>>>> /mboards/0/tick_rate
>>>>>> /mboards/0/xbar
>>>>>> /mboards/0/xbar/Radio_0
>>>>>> /mboards/0/xbar/Radio_0/noc_id
>>>>>> /mboards/0/xbar/Radio_0/input_buffer_size
>>>>>> /mboards/0/xbar/Radio_0/input_buffer_size/0
>>>>>> /mboards/0/xbar/Radio_0/input_buffer_size/1
>>>>>> /mboards/0/xbar/Radio_0/mtu
>>>>>> /mboards/0/xbar/Radio_0/mtu/0
>>>>>> /mboards/0/xbar/Radio_0/mtu/1
>>>>>> /mboards/0/xbar/Radio_0/ports
>>>>>> /mboards/0/xbar/Radio_0/ports/in
>>>>>> /mboards/0/xbar/Radio_0/ports/in/0
>>>>>> /mboards/0/xbar/Radio_0/ports/in/1
>>>>>> /mboards/0/xbar/Radio_0/ports/out
>>>>>> /mboards/0/xbar/Radio_0/ports/out/0
>>>>>> /mboards/0/xbar/Radio_0/ports/out/1
>>>>>> /mboards/0/xbar/Radio_0/args
>>>>>> /mboards/0/xbar/Radio_0/args/0
>>>>>> /mboards/0/xbar/Radio_0/args/0/spp
>>>>>> /mboards/0/xbar/Radio_0/args/0/spp/type
>>>>>> /mboards/0/xbar/Radio_0/args/0/spp/value
>>>>>> /mboards/0/xbar/Radio_0/args/1
>>>>>> /mboards/0/xbar/gain_0
>>>>>> /mboards/0/xbar/gain_0/noc_id
>>>>>> /mboards/0/xbar/gain_0/input_buffer_size
>>>>>> /mboards/0/xbar/gain_0/input_buffer_size/0
>>>>>> /mboards/0/xbar/gain_0/mtu
>>>>>> /mboards/0/xbar/gain_0/mtu/0
>>>>>> /mboards/0/xbar/gain_0/registers
>>>>>> /mboards/0/xbar/gain_0/registers/sr
>>>>>> /mboards/0/xbar/gain_0/registers/sr/Gain
>>>>>> /mboards/0/xbar/gain_0/ports
>>>>>> /mboards/0/xbar/gain_0/ports/in
>>>>>> /mboards/0/xbar/gain_0/ports/in/0
>>>>>> /mboards/0/xbar/gain_0/ports/out
>>>>>> /mboards/0/xbar/gain_0/ports/out/0
>>>>>> /mboards/0/xbar/gain_0/args
>>>>>> /mboards/0/xbar/gain_0/args/0
>>>>>> /mboards/0/xbar/DDC_0
>>>>>> /mboards/0/xbar/DDC_0/noc_id
>>>>>> /mboards/0/xbar/DDC_0/input_buffer_size
>>>>>> /mboards/0/xbar/DDC_0/input_buffer_size/0
>>>>>> /mboards/0/xbar/DDC_0/input_buffer_size/1
>>>>>> /mboards/0/xbar/DDC_0/mtu
>>>>>> /mboards/0/xbar/DDC_0/mtu/0
>>>>>> /mboards/0/xbar/DDC_0/mtu/1
>>>>>> /mboards/0/xbar/DDC_0/registers
>>>>>> /mboards/0/xbar/DDC_0/registers/sr
>>>>>> /mboards/0/xbar/DDC_0/registers/sr/N
>>>>>> /mboards/0/xbar/DDC_0/registers/sr/M
>>>>>> /mboards/0/xbar/DDC_0/registers/sr/CONFIG
>>>>>> /mboards/0/xbar/DDC_0/registers/sr/DDS_FREQ
>>>>>> /mboards/0/xbar/DDC_0/registers/sr/SCALE_IQ
>>>>>> /mboards/0/xbar/DDC_0/registers/sr/DECIM_WORD
>>>>>> /mboards/0/xbar/DDC_0/registers/sr/MODE
>>>>>> /mboards/0/xbar/DDC_0/registers/sr/RELOAD
>>>>>> /mboards/0/xbar/DDC_0/ports
>>>>>> /mboards/0/xbar/DDC_0/ports/in
>>>>>> /mboards/0/xbar/DDC_0/ports/in/0
>>>>>> /mboards/0/xbar/DDC_0/ports/in/1
>>>>>> /mboards/0/xbar/DDC_0/ports/out
>>>>>> /mboards/0/xbar/DDC_0/ports/out/0
>>>>>> /mboards/0/xbar/DDC_0/ports/out/1
>>>>>> /mboards/0/xbar/DDC_0/args
>>>>>> /mboards/0/xbar/DDC_0/args/0
>>>>>> /mboards/0/xbar/DDC_0/args/0/freq
>>>>>> /mboards/0/xbar/DDC_0/args/0/freq/type
>>>>>> /mboards/0/xbar/DDC_0/args/0/freq/value
>>>>>> /mboards/0/xbar/DDC_0/args/0/input_rate
>>>>>> /mboards/0/xbar/DDC_0/args/0/input_rate/type
>>>>>> /mboards/0/xbar/DDC_0/args/0/input_rate/value
>>>>>> /mboards/0/xbar/DDC_0/args/0/output_rate
>>>>>> /mboards/0/xbar/DDC_0/args/0/output_rate/type
>>>>>> /mboards/0/xbar/DDC_0/args/0/output_rate/value
>>>>>> /mboards/0/xbar/DDC_0/args/0/fullscale
>>>>>> /mboards/0/xbar/DDC_0/args/0/fullscale/type
>>>>>> /mboards/0/xbar/DDC_0/args/0/fullscale/value
>>>>>> /mboards/0/xbar/DDC_0/args/0/scalar_correction
>>>>>> /mboards/0/xbar/DDC_0/args/0/scalar_correction/type
>>>>>> /mboards/0/xbar/DDC_0/args/0/scalar_correction/value
>>>>>> /mboards/0/xbar/DDC_0/args/1
>>>>>> /mboards/0/xbar/DDC_0/args/1/freq
>>>>>> /mboards/0/xbar/DDC_0/args/1/freq/type
>>>>>> /mboards/0/xbar/DDC_0/args/1/freq/value
>>>>>> /mboards/0/xbar/DDC_0/args/1/input_rate
>>>>>> /mboards/0/xbar/DDC_0/args/1/input_rate/type
>>>>>> /mboards/0/xbar/DDC_0/args/1/input_rate/value
>>>>>> /mboards/0/xbar/DDC_0/args/1/output_rate
>>>>>> /mboards/0/xbar/DDC_0/args/1/output_rate/type
>>>>>> /mboards/0/xbar/DDC_0/args/1/output_rate/value
>>>>>> /mboards/0/xbar/DDC_0/args/1/fullscale
>>>>>> /mboards/0/xbar/DDC_0/args/1/fullscale/type
>>>>>> /mboards/0/xbar/DDC_0/args/1/fullscale/value
>>>>>> /mboards/0/xbar/DDC_0/args/1/scalar_correction
>>>>>> /mboards/0/xbar/DDC_0/args/1/scalar_correction/type
>>>>>> /mboards/0/xbar/DDC_0/args/1/scalar_correction/value
>>>>>> /mboards/0/xbar/DDC_0/legacy_api
>>>>>> /mboards/0/xbar/DDC_0/legacy_api/0
>>>>>> /mboards/0/xbar/DDC_0/legacy_api/0/rate
>>>>>> /mboards/0/xbar/DDC_0/legacy_api/0/rate/value
>>>>>> /mboards/0/xbar/DDC_0/legacy_api/0/rate/range
>>>>>> /mboards/0/xbar/DDC_0/legacy_api/0/freq
>>>>>> /mboards/0/xbar/DDC_0/legacy_api/0/freq/value
>>>>>> /mboards/0/xbar/DDC_0/legacy_api/0/freq/range
>>>>>> /mboards/0/xbar/DDC_0/legacy_api/1
>>>>>> /mboards/0/xbar/DDC_0/legacy_api/1/rate
>>>>>> /mboards/0/xbar/DDC_0/legacy_api/1/rate/value
>>>>>> /mboards/0/xbar/DDC_0/legacy_api/1/rate/range
>>>>>> /mboards/0/xbar/DDC_0/legacy_api/1/freq
>>>>>> /mboards/0/xbar/DDC_0/legacy_api/1/freq/value
>>>>>> /mboards/0/xbar/DDC_0/legacy_api/1/freq/range
>>>>>> /mboards/0/xbar/FFT_0
>>>>>> /mboards/0/xbar/FFT_0/noc_id
>>>>>> /mboards/0/xbar/FFT_0/input_buffer_size
>>>>>> /mboards/0/xbar/FFT_0/input_buffer_size/0
>>>>>> /mboards/0/xbar/FFT_0/mtu
>>>>>> /mboards/0/xbar/FFT_0/mtu/0
>>>>>> /mboards/0/xbar/FFT_0/registers
>>>>>> /mboards/0/xbar/FFT_0/registers/sr
>>>>>> /mboards/0/xbar/FFT_0/registers/sr/FFT_RESET
>>>>>> /mboards/0/xbar/FFT_0/registers/sr/FFT_SIZE_LOG2
>>>>>> /mboards/0/xbar/FFT_0/registers/sr/MAGNITUDE_OUT
>>>>>> /mboards/0/xbar/FFT_0/registers/sr/FFT_DIRECTION
>>>>>> /mboards/0/xbar/FFT_0/registers/sr/FFT_SCALING
>>>>>> /mboards/0/xbar/FFT_0/registers/sr/FFT_SHIFT_CONFIG
>>>>>> /mboards/0/xbar/FFT_0/registers/rb
>>>>>> /mboards/0/xbar/FFT_0/registers/rb/RB_FFT_RESET
>>>>>> /mboards/0/xbar/FFT_0/registers/rb/RB_MAGNITUDE_OUT
>>>>>> /mboards/0/xbar/FFT_0/registers/rb/RB_FFT_SIZE_LOG2
>>>>>> /mboards/0/xbar/FFT_0/registers/rb/RB_FFT_DIRECTION
>>>>>> /mboards/0/xbar/FFT_0/registers/rb/RB_FFT_SCALING
>>>>>> /mboards/0/xbar/FFT_0/registers/rb/RB_FFT_SHIFT_CONFIG
>>>>>> /mboards/0/xbar/FFT_0/ports
>>>>>> /mboards/0/xbar/FFT_0/ports/in
>>>>>> /mboards/0/xbar/FFT_0/ports/in/0
>>>>>> /mboards/0/xbar/FFT_0/ports/out
>>>>>> /mboards/0/xbar/FFT_0/ports/out/0
>>>>>> /mboards/0/xbar/FFT_0/args
>>>>>> /mboards/0/xbar/FFT_0/args/0
>>>>>> /mboards/0/xbar/FFT_0/args/0/spp
>>>>>> /mboards/0/xbar/FFT_0/args/0/spp/type
>>>>>> /mboards/0/xbar/FFT_0/args/0/spp/value
>>>>>> /mboards/0/xbar/FFT_0/args/0/shift
>>>>>> /mboards/0/xbar/FFT_0/args/0/shift/type
>>>>>> /mboards/0/xbar/FFT_0/args/0/shift/value
>>>>>> /mboards/0/xbar/FFT_0/args/0/direction
>>>>>> /mboards/0/xbar/FFT_0/args/0/direction/type
>>>>>> /mboards/0/xbar/FFT_0/args/0/direction/value
>>>>>> /mboards/0/xbar/FFT_0/args/0/scaling
>>>>>> /mboards/0/xbar/FFT_0/args/0/scaling/type
>>>>>> /mboards/0/xbar/FFT_0/args/0/scaling/value
>>>>>> /mboards/0/xbar/FFT_0/args/0/otype
>>>>>> /mboards/0/xbar/FFT_0/args/0/otype/type
>>>>>> /mboards/0/xbar/FFT_0/args/0/otype/value
>>>>>> /mboards/0/xbar/FFT_0/args/0/reset
>>>>>> /mboards/0/xbar/FFT_0/args/0/reset/type
>>>>>> /mboards/0/xbar/FFT_0/args/0/reset/value
>>>>>> /mboards/0/xbar/FFT_0/args/0/magnitude_out
>>>>>> /mboards/0/xbar/FFT_0/args/0/magnitude_out/type
>>>>>> /mboards/0/xbar/FFT_0/args/0/magnitude_out/value
>>>>>> /mboards/0/time
>>>>>> /mboards/0/time/now
>>>>>> /mboards/0/time/pps
>>>>>> /mboards/0/time/cmd
>>>>>> /mboards/0/time_source
>>>>>> /mboards/0/time_source/value
>>>>>> /mboards/0/time_source/options
>>>>>> /mboards/0/rx_codecs
>>>>>> /mboards/0/rx_codecs/A
>>>>>> /mboards/0/rx_codecs/A/name
>>>>>> /mboards/0/rx_codecs/A/gains
>>>>>> /mboards/0/tx_codecs
>>>>>> /mboards/0/tx_codecs/A
>>>>>> /mboards/0/tx_codecs/A/name
>>>>>> /mboards/0/tx_codecs/A/gains
>>>>>> /mboards/0/gpio
>>>>>> /mboards/0/gpio/INT0
>>>>>> /mboards/0/gpio/INT0/SRC
>>>>>> /mboards/0/gpio/INT0/CTRL
>>>>>> /mboards/0/gpio/INT0/DDR
>>>>>> /mboards/0/gpio/INT0/OUT
>>>>>> /mboards/0/gpio/INT0/ATR_0X
>>>>>> /mboards/0/gpio/INT0/ATR_RX
>>>>>> /mboards/0/gpio/INT0/ATR_TX
>>>>>> /mboards/0/gpio/INT0/ATR_XX
>>>>>> /mboards/0/gpio/INT0/READBACK
>>>>>> /mboards/0/rx_dsps
>>>>>> /mboards/0/rx_dsps/0
>>>>>> /mboards/0/rx_dsps/0/stream_cmd
>>>>>> /mboards/0/rx_dsps/0/freq
>>>>>> /mboards/0/rx_dsps/0/freq/value
>>>>>> /mboards/0/rx_dsps/0/freq/range
>>>>>> /mboards/0/rx_dsps/0/rate
>>>>>> /mboards/0/rx_dsps/0/rate/value
>>>>>> /mboards/0/rx_dsps/1
>>>>>> /mboards/0/rx_dsps/1/stream_cmd
>>>>>> /mboards/0/rx_dsps/1/freq
>>>>>> /mboards/0/rx_dsps/1/freq/value
>>>>>> /mboards/0/rx_dsps/1/freq/range
>>>>>> /mboards/0/rx_dsps/1/rate
>>>>>> /mboards/0/rx_dsps/1/rate/value
>>>>>> /mboards/0/tx_dsps
>>>>>> /mboards/0/tx_dsps/0
>>>>>> /mboards/0/tx_dsps/0/freq
>>>>>> /mboards/0/tx_dsps/0/freq/value
>>>>>> /mboards/0/tx_dsps/0/freq/range
>>>>>> /mboards/0/tx_dsps/0/rate
>>>>>> /mboards/0/tx_dsps/0/rate/value
>>>>>> /mboards/0/tx_dsps/1
>>>>>> /mboards/0/tx_dsps/1/freq
>>>>>> /mboards/0/tx_dsps/1/freq/value
>>>>>> /mboards/0/tx_dsps/1/freq/range
>>>>>> /mboards/0/tx_dsps/1/rate
>>>>>> /mboards/0/tx_dsps/1/rate/value
>>>>>> /mboards/0/rx_subdev_spec
>>>>>> /mboards/0/tx_subdev_spec
>>>>>> [INFO] [E300] Loading FPGA image:
>>>>>> /home/root/newinstall/usr/share/uhd/images/usrp_e3xx_fpga_idle_sg3.bit...
>>>>>> [INFO] [E300] FPGA image loaded
>>>>>>
>>>>>> The failure output I got from running the python script shows that it
>>>>>> can't find "/mboards/0/xbar/gain_0/args/0/gain/value" and when I look at
>>>>>> the tree, there is no value instantiated by the probe. It only looks like
>>>>>> the furthest that the probe goes down in the mboards is
>>>>>> "/mboards/0/xbar/gain_0/args/0". I am assuming its something in the
>>>>>> arguments file not getting loaded, but everything appears ok to me on
>>>>>> glance in that XML file.
>>>>>>
>>>>>> Regards,
>>>>>> Jon
>>>>>>
>>>>>> On Thu, Nov 21, 2019 at 4:49 PM EJ Kreinar <ejkreinar at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Okay, great...
>>>>>>>
>>>>>>> You might want to try increasing the log level. Export
>>>>>>> UHD_LOG_CONSOLE_LEVEL=trace or debug and try to make sure the correct xml
>>>>>>> file is getting applied to the block correctly.
>>>>>>>
>>>>>>> There's also something like a "--tree" parameter in the
>>>>>>> uhd_usrp_probe so try running the probe with the tree option to print out
>>>>>>> the device tree and look for the arguments assigned to your new block.
>>>>>>>
>>>>>>> Let's see if any of that helps figure out what's going on...
>>>>>>> EJ
>>>>>>>
>>>>>>> On Thu, Nov 21, 2019, 4:01 PM Jonathan Lockhart <
>>>>>>> jlockhartrt at gmail.com> wrote:
>>>>>>>
>>>>>>>> Also, when I compiled from the OOT directory for ARM, I used this
>>>>>>>> command, which I pieced together from the RFNoC build guide, and the
>>>>>>>> release-4 guide for cross-compiling gr-ettus.
>>>>>>>>
>>>>>>>> cmake
>>>>>>>> -DCMAKE_TOOLCHAIN_FILE=~/rfnoc/src/gnuradio/cmake/Toolchains/oe-sdk_cross.cmake
>>>>>>>> -DCMAKE_INSTALL_PREFIX=/usr
>>>>>>>> -DUHD_FPGA_DIR="/home/jon/rfnoc/src/uhd/fpga-src/" ../
>>>>>>>>
>>>>>>>> Regards,
>>>>>>>> Jon
>>>>>>>>
>>>>>>>> On Thu, Nov 21, 2019 at 3:48 PM Jonathan Lockhart <
>>>>>>>> jlockhartrt at gmail.com> wrote:
>>>>>>>>
>>>>>>>>> Greetings EJ,
>>>>>>>>>
>>>>>>>>> So, from the tutorial, they have you edit the gain.xml file, and
>>>>>>>>> this is what I have for it.
>>>>>>>>>
>>>>>>>>> <?xml version="1.0"?>
>>>>>>>>> <!--Default XML file-->
>>>>>>>>> <nocblock>
>>>>>>>>>   <name>gain</name>
>>>>>>>>>   <blockname>gain</blockname>
>>>>>>>>>   <ids>
>>>>>>>>>     <id revision="0">B7DD64941A952AAC</id>
>>>>>>>>>   </ids>
>>>>>>>>>   <!-- Registers -->
>>>>>>>>>   <registers>
>>>>>>>>>     <setreg>
>>>>>>>>>       <name>Gain</name>
>>>>>>>>>       <address>128</address>
>>>>>>>>>     </setreg>
>>>>>>>>>   </registers>
>>>>>>>>>   <!-- Args -->
>>>>>>>>>   <args>
>>>>>>>>>     <args>
>>>>>>>>>       <name>gain</name>
>>>>>>>>>       <type>double</type>
>>>>>>>>>       <value>1.0</value>
>>>>>>>>>       <check>GE($gain, 0.0) AND LE($gain, 32767.0)</check>
>>>>>>>>>       <check_message>Invalid Gain!</check_message>
>>>>>>>>>       <action>
>>>>>>>>>         SR_WRITE("GAIN", IROUND($gain))
>>>>>>>>>       </action>
>>>>>>>>>     </args>
>>>>>>>>>   </args>
>>>>>>>>>   <!--One input, one output. If this is used, better have all the
>>>>>>>>> info the C++ file.-->
>>>>>>>>>   <ports>
>>>>>>>>>     <sink>
>>>>>>>>>       <name>in0</name>
>>>>>>>>>       <type>sc16</name>
>>>>>>>>>     </sink>
>>>>>>>>>     <source>
>>>>>>>>>       <name>out0</name>
>>>>>>>>>       <type>sc16</name>
>>>>>>>>>     </source>
>>>>>>>>>   </ports>
>>>>>>>>> </nocblock>
>>>>>>>>>
>>>>>>>>> There is an args value and it is declared as gain.
>>>>>>>>>
>>>>>>>>> So from there, I followed your second suggestion and tried to find
>>>>>>>>> where it was installed when I did the cross compile. It was not placed in
>>>>>>>>> the "GRC_BLOCKS_PATH" of "/share/gnuradio/grc/blocks" like the default
>>>>>>>>> RFNoC blocks. It was instead placed in "/share/uhd/rfnoc/bocks" so I added
>>>>>>>>> that to the setup.env file, included below.
>>>>>>>>>
>>>>>>>>> LOCALPREFIX=~/newinstall/usr
>>>>>>>>> export PATH=$LOCALPREFIX/bin:$PATH
>>>>>>>>> export LD_LOAD_LIBRARY=$LOCALPREFIX/lib:$LD_LOAD_LIBRARY
>>>>>>>>> export LD_LIBRARY_PATH=$LOCALPREFIX/lib:$LD_LIBRARY_PATH
>>>>>>>>> export
>>>>>>>>> PYTHONPATH=$LOCALPREFIX/lib/python2.7/site-packages:$PYTHONPATH
>>>>>>>>> export PKG_CONFIG_PATH=$LOCALPREFIX/lib/pkgconfig:$PKG_CONFIG_PATH
>>>>>>>>> export
>>>>>>>>> GRC_BLOCKS_PATH=$LOCALPREFIX/share/gnuradio/grc/blocks:$GRC_BLOCKS_PATH
>>>>>>>>> export UHD_RFNOC_DIR=$LOCALPREFIX/share/uhd/rfnoc/
>>>>>>>>> export UHD_IMAGES_DIR=$LOCALPREFIX/share/uhd/images
>>>>>>>>> export
>>>>>>>>> GRC_BLOCKS_PATH=$LOCALPREFIX/share/uhd/rfnoc/blocks:$GRC_BLOCKS_PATH
>>>>>>>>>
>>>>>>>>> Unfortunately, after re-sourcing the setup.env, I still get the
>>>>>>>>> same message.
>>>>>>>>>
>>>>>>>>>   File "rfnoc_myGain_usrp.py", line 223, in <module>
>>>>>>>>>     main()
>>>>>>>>>   File "rfnoc_myGain_usrp.py", line 212, in main
>>>>>>>>>     tb = top_block_cls(fpga_path=options.fpga_path,
>>>>>>>>> rx_gain=options.rx_gain, rx_digital_gain=options.rx_digital_gain,
>>>>>>>>> rx_freq=options.rx_freq, host_ip_addr=options.host_ip_addr)
>>>>>>>>>   File "rfnoc_myGain_usrp.py", line 117, in __init__
>>>>>>>>>     self.tutorial_gain_0.set_arg("gain", rx_digital_gain)
>>>>>>>>>   File
>>>>>>>>> "/home/root/newinstall/usr/lib/python2.7/site-packages/tutorial/tutorial_swig.py",
>>>>>>>>> line 315, in set_arg
>>>>>>>>>     return _tutorial_swig.gain_sptr_set_arg(self, *args)
>>>>>>>>> RuntimeError: LookupError: Path not found in tree:
>>>>>>>>> /mboards/0/xbar/gain_0/args/0/gain/value
>>>>>>>>>
>>>>>>>>> I looked at some of your examples (which have been very helpful to
>>>>>>>>> get me this far) from what I believe is your github someone linked me.
>>>>>>>>> Everything appears to match what it should, for what gain is trying to
>>>>>>>>> accomplish.
>>>>>>>>>
>>>>>>>>> Regards,
>>>>>>>>> Jon
>>>>>>>>>
>>>>>>>>> On Thu, Nov 21, 2019 at 3:27 PM EJ Kreinar <ejkreinar at gmail.com>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> Hi Jon,
>>>>>>>>>>
>>>>>>>>>> The rfnoc "nocscript" xml definition can create arguments and
>>>>>>>>>> attach to the device tree like you are trying to set there (it's not
>>>>>>>>>> compiled directly, but rather created dynamically from the xml definition)
>>>>>>>>>>
>>>>>>>>>> Recommended debugging...
>>>>>>>>>> 1. Check your OOT gain block xml (in rfnoc/blocks) and make sure
>>>>>>>>>> it has a "gain" field in the "args" list. You'll also want to make sure it
>>>>>>>>>> writes your desired register, but I don't think you're even getting that far
>>>>>>>>>> 2. Make sure the block xml is installed on the e310 embedded
>>>>>>>>>> prefix and is found at run time during uhd_usrp_probe and when running your
>>>>>>>>>> application. If it's not in the right place or not attaching to your block
>>>>>>>>>> then it won't create the gain argument
>>>>>>>>>>
>>>>>>>>>> I'm guessing it's one of those two possibilities...
>>>>>>>>>> EJ
>>>>>>>>>>
>>>>>>>>>> On Thu, Nov 21, 2019, 3:19 PM Jonathan Lockhart via USRP-users <
>>>>>>>>>> usrp-users at lists.ettus.com> wrote:
>>>>>>>>>>
>>>>>>>>>>> Greetings,
>>>>>>>>>>>
>>>>>>>>>>> I was able to get the ARM cross compile working. I removed the
>>>>>>>>>>> build directory and re-sourced the dev environment and then the
>>>>>>>>>>> cross-compile used the -mfloar=hard flag. Not sure what caused the issue
>>>>>>>>>>> earlier and why it wasn't picking it up.
>>>>>>>>>>>
>>>>>>>>>>> Now I have a different issue. So I have completed this guide:
>>>>>>>>>>> https://kb.ettus.com/Getting_Started_with_RFNoC_Development
>>>>>>>>>>>
>>>>>>>>>>> I modified the GNURadio just a bit so that the output from gain
>>>>>>>>>>> was placed on a ZMQ push, and the graphics were on the host to graph the
>>>>>>>>>>> signal (seen in the screenshots below).
>>>>>>>>>>>
>>>>>>>>>>> [image: Screenshot from 2019-11-21 15-06-33.jpg]
>>>>>>>>>>>
>>>>>>>>>>> [image: Screenshot from 2019-11-21 15-010-44.jpg]
>>>>>>>>>>>
>>>>>>>>>>> However, when I run the top file for the USRP, I am running into
>>>>>>>>>>> this error.
>>>>>>>>>>>
>>>>>>>>>>> Traceback (most recent call last):
>>>>>>>>>>>   File "rfnoc_myGain_usrp.py", line 223, in <module>
>>>>>>>>>>>     main()
>>>>>>>>>>>   File "rfnoc_myGain_usrp.py", line 212, in main
>>>>>>>>>>>     tb = top_block_cls(fpga_path=options.fpga_path,
>>>>>>>>>>> rx_gain=options.rx_gain, rx_digital_gain=options.rx_digital_gain,
>>>>>>>>>>> rx_freq=options.rx_freq, host_ip_addr=options.host_ip_addr)
>>>>>>>>>>>   File "rfnoc_myGain_usrp.py", line 117, in __init__
>>>>>>>>>>>     self.tutorial_gain_0.set_arg("gain", rx_digital_gain)
>>>>>>>>>>>   File
>>>>>>>>>>> "/home/root/newinstall/usr/lib/python2.7/site-packages/tutorial/tutorial_swig.py",
>>>>>>>>>>> line 315, in set_arg
>>>>>>>>>>>     return _tutorial_swig.gain_sptr_set_arg(self, *args)
>>>>>>>>>>> RuntimeError: LookupError: Path not found in tree:
>>>>>>>>>>> /mboards/0/xbar/gain_0/args/0/gain/value
>>>>>>>>>>>
>>>>>>>>>>> No where else in building GNURadio scripts and .bit files does
>>>>>>>>>>> this "/mboards" arise, and I have looked through my verilog file for gain
>>>>>>>>>>> (gain.v) and it is correct per the instructions in the linked guide, and I
>>>>>>>>>>> built the python and gnuradio hook exactly as the instructions stated to.
>>>>>>>>>>>
>>>>>>>>>>> Anyone have an troubleshooting ideas b/c I am currently at a
>>>>>>>>>>> loss. It did past the test bench they have you build with no issues.
>>>>>>>>>>>
>>>>>>>>>>> Regards,
>>>>>>>>>>> Jon
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> On Wed, Nov 20, 2019 at 3:21 PM Jonathan Lockhart <
>>>>>>>>>>> jlockhartrt at gmail.com> wrote:
>>>>>>>>>>>
>>>>>>>>>>>> Greetings,
>>>>>>>>>>>>
>>>>>>>>>>>> I am having some issues completing the RFNOC build tutorial on
>>>>>>>>>>>> the Ettus E312. The reference documentation is using an X3xx series radio,
>>>>>>>>>>>> and from the final python script it appears to be running the GNR script
>>>>>>>>>>>> natively on the host. I built the exact script from the KB but when running
>>>>>>>>>>>> on the radio it fails stating it can't "import tutorial." I realized all
>>>>>>>>>>>> the files that were installed were placed on the host but not cross
>>>>>>>>>>>> compiled for the E3xx using the SDK and ARM cross compile tool. I tried to
>>>>>>>>>>>> complete this task, but unfortunately the compilation dies here.
>>>>>>>>>>>>
>>>>>>>>>>>> /home/jon/rfnoc/oe/sysroots/armv7ahf-vfp-neon-oe-linux-gnueabi/usr/include/gnu/stubs.h:7:11:
>>>>>>>>>>>> fatal error: gnu/stubs-soft.h: No such file or directory
>>>>>>>>>>>>  # include <gnu/stubs-soft.h>
>>>>>>>>>>>>            ^~~~~~~~~~~~~~~~~~
>>>>>>>>>>>> compilation terminated.
>>>>>>>>>>>>
>>>>>>>>>>>> Now I did find the stubs-soft.h file in the
>>>>>>>>>>>> libc6-dev-armel-cross in the apt repo. I installed it and tried to cp the
>>>>>>>>>>>> file into the
>>>>>>>>>>>> /home/jon/rfnoc/oe/sysroots/armv7ahf-vfp-neon-oe-linux-gnueabi/usr/include/gnu/
>>>>>>>>>>>> location but it still doesn't like that. I verified that on my echo $CC
>>>>>>>>>>>> that the -mfloat is set to hard as shown here.
>>>>>>>>>>>>
>>>>>>>>>>>> jon at jon-OptiPlex-9020:~/rfnoc/src/rfnoc-tutorial$ echo $CC
>>>>>>>>>>>> arm-oe-linux-gnueabi-gcc -march=armv7-a -mfloat-abi=hard
>>>>>>>>>>>> -mfpu=neon
>>>>>>>>>>>> --sysroot=/home/jon/rfnoc/oe/sysroots/armv7ahf-vfp-neon-oe-linux-gnueabi
>>>>>>>>>>>>
>>>>>>>>>>>> So I am not sure why the gain module in the tutorial is looking
>>>>>>>>>>>> for the soft file.
>>>>>>>>>>>>
>>>>>>>>>>>> If anyone has experience in porting their OOT modules over to
>>>>>>>>>>>> the E-series of radios I would appreciate the help.
>>>>>>>>>>>>
>>>>>>>>>>>> Regards,
>>>>>>>>>>>> Jon
>>>>>>>>>>>>
>>>>>>>>>>> _______________________________________________
>>>>>>>>>>> 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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