# Removing the old version and Installing gnuradio 3.7 on USRP E 110 **URL:** \ **Category:** GNU Radio\ **Created:** [May 13, 2014, 11:48am UTC](https://www.ruby-forum.com/t/removing-the-old-version-and-installing-gnuradio-3-7-on-usrp-e-110/241108 "2014-05-13T11:48:57Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![musicdenotation](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ea666f/32.png) [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Post date:** [May 13, 2014, 11:48am UTC](https://www.ruby-forum.com/t/removing-the-old-version-and-installing-gnuradio-3-7-on-usrp-e-110/241108/1 "2014-05-13T11:48:57Z")
Hi, I’m working on USRP E 110 card in order to implement OFDM channel on it. In fact, I would like to remove the old version of gnuradio installed in USRP E 110. Then, I would like to install gnuradio 3.7.4 on USRP E 110(the version that as far as I know contains the different blocks necessary to implement OFDM channel on USRP E 110). Best regards, Wafa HAJ HMIDA ---
**Author:** ![wafa\_e](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/b4bc9f/32.png) [@wafa\_e](https://www.ruby-forum.com/u/wafa_e)\ **Post date:** [May 13, 2014, 2:01pm UTC](https://www.ruby-forum.com/t/removing-the-old-version-and-installing-gnuradio-3-7-on-usrp-e-110/241108/2 "2014-05-13T14:01:16Z")
plz how to proceed ? Thanks a lot 2014-05-13 11:47 GMT+02:00 Wafa E. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid): ---
**Author:** ![wafa\_e](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/b4bc9f/32.png) [@wafa\_e](https://www.ruby-forum.com/u/wafa_e)\ **Post date:** [May 13, 2014, 2:30pm UTC](https://www.ruby-forum.com/t/removing-the-old-version-and-installing-gnuradio-3-7-on-usrp-e-110/241108/3 "2014-05-13T14:30:50Z")
If you Google “USRP E100 update gnuradio” it points to the following instructions: [http://ettus-apps.sourcerepo.com/redmine/ettus/projects/usrpe1xx/wiki/FAQ#How-do-I-install-GNU-Radio-from-source](http://ettus-apps.sourcerepo.com/redmine/ettus/projects/usrpe1xx/wiki/FAQ#How-do-I-install-GNU-Radio-from-source) Mike – Mike J. M0MIK BSc MIET Ettus R. Technical Support Email: removed\_email\_address@domain.invalid Web: [http://ettus.com](http://ettus.com) On Tue, May 13, 2014 at 12:59 PM, Wafa E. \< ---
**Author:** ![wafa\_e](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/b4bc9f/32.png) [@wafa\_e](https://www.ruby-forum.com/u/wafa_e)\ **Post date:** [May 13, 2014, 2:36pm UTC](https://www.ruby-forum.com/t/removing-the-old-version-and-installing-gnuradio-3-7-on-usrp-e-110/241108/4 "2014-05-13T14:36:59Z")
I recommend you spend some time with the OFDM blocks over simulated channels on your PC to become familiar with the basics. Using the E110 is not a simple task, make sure you’ve become fully familiar with that device before you attempt to do something sophisticated. M ---
**Author:** ![wafa\_e](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/b4bc9f/32.png) [@wafa\_e](https://www.ruby-forum.com/u/wafa_e)\ **Post date:** [May 23, 2014, 9:29am UTC](https://www.ruby-forum.com/t/removing-the-old-version-and-installing-gnuradio-3-7-on-usrp-e-110/241108/5 "2014-05-23T09:29:38Z")
Hi, The USRP E 110 is connected to internet. In fact, I followed the different commands described in the FAQ. But when I typed “make” I got this error : [49%] Built target \_filter\_swig\_swig\_tag [49%] Building CXX object gr-filter/swig/CMakeFiles/\_filter\_swig.dir/filter\_swigPYTHON\_wrap.cxx.o g++: Internal error: Killed (program cc1plus) Please submit a full bug report. See \<[GCC Bugs - GNU Project](http://gcc.gnu.org/bugs.html)[https://owa.ece.fr/owa/redir.aspx?C=azMLHeTJTEeJAp-eApYyqBPwd5wXLNEIaWtGtAFgTFNK5I8pwshWTvAb5Aa2cq8hkqcLKU7Jt-8.&URL=](https://owa.ece.fr/owa/redir.aspx?C=azMLHeTJTEeJAp-eApYyqBPwd5wXLNEIaWtGtAFgTFNK5I8pwshWTvAb5Aa2cq8hkqcLKU7Jt-8.&URL=)\> for instructions. make[2]: \*\*\* [gr-filter/swig/CMakeFiles/\_filter\_swig.dir/filter\_swigPYTHON\_wrap.cxx.o] Error 1 make[1]: \*\*\* [gr-filter/swig/CMakeFiles/\_filter\_swig.dir/all] Error 2 make: \*\*\* [all] Error 2 How to fix it in order to update gnuradio embedded on usrp e110? Best regards, Wafa HAJ HMIDA 2014-05-19 16:06 GMT+02:00 Wafa E. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid): ---
**Author:** ![wafa\_e](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/b4bc9f/32.png) [@wafa\_e](https://www.ruby-forum.com/u/wafa_e)\ **Post date:** [May 24, 2014, 4:55am UTC](https://www.ruby-forum.com/t/removing-the-old-version-and-installing-gnuradio-3-7-on-usrp-e-110/241108/6 "2014-05-24T04:55:48Z")
Hi, I have two questions: 1/ I followed the different instructions mentioned in this link: [http://www.cyberciti.biz/faq/linux-add-a-swap-file-howto/](http://www.cyberciti.biz/faq/linux-add-a-swap-file-howto/) But when I typed: root@usrp-e1xx:~# swapon /swapfile1 _swapon: /swapfile1: swapon failed: Device or resource busy_ I got the error above. How to fix this error in order to create swap file in order to update gnuradio ? 2/ For the following instruction , which count shall I put for the swap file in order to update gnuradio on usrp e110 ? dd if=/dev/zero of=/swapfile1 bs=1024 count=524288 Best regards, Wafa HAJ HMIDA 2014-05-22 16:57 GMT+02:00 Philip B. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid): ---
**Author:** ![wafa\_e](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/b4bc9f/32.png) [@wafa\_e](https://www.ruby-forum.com/u/wafa_e)\ **Post date:** [May 24, 2014, 5:30am UTC](https://www.ruby-forum.com/t/removing-the-old-version-and-installing-gnuradio-3-7-on-usrp-e-110/241108/7 "2014-05-24T05:30:53Z")
Hi Wafa, root@usrp-e1xx:~# swapon /swapfile1 _swapon: /swapfile1: swapon failed: Device or resource busy_ The file is still opened; maybe you’re already using it (check with “swapon” without arguments)? Have you been able to run mkswap on the file? Also, you must use an external drive to store the swap file instead of the root folder ( / ), because in the standard image on the standard 4GB flash drive that the E100 uses, there won’t be enough free space for a reasonably large swap file. Regarding question 2: swap can’t be too big. Aim for 3-4GB. Greetings, Marcus ---
**Author:** ![wafa\_e](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/b4bc9f/32.png) [@wafa\_e](https://www.ruby-forum.com/u/wafa_e)\ **Post date:** [May 23, 2014, 9:40am UTC](https://www.ruby-forum.com/t/removing-the-old-version-and-installing-gnuradio-3-7-on-usrp-e-110/241108/8 "2014-05-23T09:40:45Z")
Hi Wafa, to cite an email of Marcus L. (which I saidly can only find myself in citations): > > This particular error comes from GCC running out of virtual memory during > > the compile. You’ll need to attach an external disk, make a swapfile on > > it, and then attach said swapfile to > > the swap pool using “swapon”. Please consult the internet, your administrator or IT helpdesk on how to set up a swap file on linux. But your real question was: > How to fix it in order to update gnuradio embedded on usrp e110? I think the answer here is that I still think it might be a bit early for you to work on the OFDM systems on your embedded device. First, you should get a little more accustomed to doing Software Radio on a PC, using simulations. After all, a simulation can give you a feeling on how much processing power you’ll need to do the real-time transmission – and if what you’re planning to do is really feasible with your specific combination of hardware, system and optimization knowledge. Greetings, Marcus M. ---
**Author:** ![wafa\_e](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/b4bc9f/32.png) [@wafa\_e](https://www.ruby-forum.com/u/wafa_e)\ **Post date:** [May 24, 2014, 6:58am UTC](https://www.ruby-forum.com/t/removing-the-old-version-and-installing-gnuradio-3-7-on-usrp-e-110/241108/9 "2014-05-24T06:58:58Z")
In fact, I retried to type these commands : root@usrp-e1xx:~# swapon Usage: swapon -a [-e] [-v] [-f] enable all swaps from /etc/fstab swapon [-p priority] [-v] [-f] enable given swap swapon -s display swap usage summary swapon -h display help swapon -V display version The parameter: {-L label | LABEL=label} LABEL of device to be used {-U uuid | UUID=uuid} UUID of device to be used name of device to be used name of file to be used root@usrp-e1xx:~# mkswap /swapfile1 Setting up swapspace version 1, size = 524284 KiB no label, UUID=76dccdc9-cb8a-40c6-9e0a-ed58eaa900f8 root@usrp-e1xx:~# chown root:root /swapfile1 root@usrp-e1xx:~# chmod 0600 /swapfile1 _root@usrp-e1xx:~# swapon /swapfile1_ _Adding 524284k swap on /swapfile1. Priority:-1 extents:246 across:1568156k SS_ Now it works. shall I follow to do the different instructions mentioned on this website [http://www.cyberciti.biz/faq/linux-add-a-swap-file-howto/](http://www.cyberciti.biz/faq/linux-add-a-swap-file-howto/) ie making swap file on the root or shall I connect usrp to an external memory ? If yes shall I connect a flash disc to the usrp on its usb host port ? Best regards, Wafa HAJ HMIDA 2014-05-23 12:26 GMT+02:00 Marcus Müller [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):