# Modifying gr-air-modes to work with Nutaq's Zepto/Pico **URL:** \ **Category:** GNU Radio\ **Created:** [February 28, 2014, 4:37pm UTC](https://www.ruby-forum.com/t/modifying-gr-air-modes-to-work-with-nutaqs-zepto-pico/239484 "2014-02-28T16:37:04Z")\ **Posts on this page:** 2\ **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:** [February 28, 2014, 4:37pm UTC](https://www.ruby-forum.com/t/modifying-gr-air-modes-to-work-with-nutaqs-zepto-pico/239484/1 "2014-02-28T16:37:04Z")
Hello, I’m currently working on a project where I need to install gr-air-modes on a Zepto then a Pico from Nutaq. The problem is that gr-air-modes is working with UHD/Osmocom. I wondered if somebody had any ideas about how to modify gr-air-modes ? Thank you ! Kind regards, _cid:image001.jpg@01CF20D9.8367E550_cid:image002.jpg@01CF20D9.8367E550 _/linkedin/_ [http://www.linkedin.com/company/laboratoire-de-recherche-lassena](http://www.linkedin.com/company/laboratoire-de-recherche-lassena)_/twitter/_ [http://twitter.com/lassenaets](http://twitter.com/lassenaets)[https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-snc6/224433\_10151269768522857\_381084400\_n.jpg](https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-snc6/224433_10151269768522857_381084400_n.jpg) [http://www.facebook.com/lassena.etsmtl.ca](http://www.facebook.com/lassena.etsmtl.ca) \*Adrien Dubedat \*| Stagiaire Laboratoire LASSENA ?cole de Technologie Sup?rieure | 1100, rue Notre-Dame Ouest | Montr?al (Qc) Canada | H3C 1K3 Tel.:514 430-9342, poste 7750 | Bureau : A-2451 | www.etsmtl.ca [http://www.etsmtl.ca/](http://www.etsmtl.ca/) Email :removed\_email\_address@domain.invalid [mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) LASSENA : lassena.etsmtl.ca [http://lassena.etsmtl.ca/](http://lassena.etsmtl.ca/) -------------------------------------------------------------------------------------------------------------------------------/ L//‘//?TS est une constituante du r?seau de l//’//Universit? du Qu?bec// / Int?ress? ? joindre le laboratoire de recherche, remplir ce formulaire svp : [Jacques-Andre Landry](http://profs.etsmtl.ca/rlandry/landry/avis.asp?lang=fr) Interested to join the research laboratory, please fill this form: \_[Jacques-Andre Landry](http://profs.etsmtl.ca/rlandry/landry/avis.asp?lang=en_) * * * Avis: L’information contenue dans ce courriel est strictement confidentielle. Toute utilisation par une personne autre que le destinataire est ill?gale. Si vous recevez ce courriel par erreur, veuillez svp le d?truire et nous en aviser. ---
**Author:** ![Adrien\_Dubedat](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/da6949/32.png) [@Adrien\_Dubedat](https://www.ruby-forum.com/u/Adrien_Dubedat)\ **Post date:** [March 3, 2014, 1:31pm UTC](https://www.ruby-forum.com/t/modifying-gr-air-modes-to-work-with-nutaqs-zepto-pico/239484/2 "2014-03-03T13:31:33Z")
Hello Adrien, You can simply replace the UHD functions invoked by their Nutaq equivalent. This is very easy and straight forward. There are two blogs on the subject, one for C language, one for GRC flow graphs. [http://nutaq.com/en/blog/comparison-nutaq-api-and-usrp-hardware-driver](http://nutaq.com/en/blog/comparison-nutaq-api-and-usrp-hardware-driver) [http://nutaq.com/en/blog/how-port-existing-gnu-radio-waveform-picosdr-less-2-minutes](http://nutaq.com/en/blog/how-port-existing-gnu-radio-waveform-picosdr-less-2-minutes) I had a quick look to gr-air-modes-master, it doesn’t seem to have a .grc, so you will do the UHD-\>Nutaq replacements in the Python implementation (gr-air-modes-master\python\radio.py). The Nutaq API and FPGA cores come with in-depth documentation that explains each function (“doc” folder). But one quick way to get started is by comparing (using diff or Beyond Compare) the Pyton generated form a basic GRC example (eg: uhd\_rx\_dpsk.uhd.py from basic GR install) where you replace the UHD blocks with Nutaq blocks. The delta obtained is the list of UHD python function along with their Nutaq equivalent. In Radio.py (gr-air-modes-master), copy the UHD implementation starting at line 144 and paste it into a new “elsif” at line 177: elif options.source == “zeptosdr”: #using Nutaq ZeptoSDR Then replace the “from gnuradio import uhd” and “uhd.usrp\_source()” by their Nutaq equivalent: “import Nutaq” and “nutaq.rtdex\_source()” respectively. Repeat with all the RTDEx and Radio420x configuration functions listed earlier with diff or Beyond Compare (set\_center\_freq , set\_samp\_rate, set\_gain, etc…). Then, remake the proper connexions by replacing self.connect((self.uhd\_usrp\_source\_0, 0), (…)) with self.connect((self.nutaq\_rtdex\_source\_0, 0), (…)) Finally, do not hesitate to connect our tech support helpdesk if you run into problems understanding an API function when working on your code. > **[Support | Nutaq Technologies](https://nutaq.com/support)** > > Support / Technical Support > Nutaq is dedicated to offering the best technical support. If you are experiencing problems with one of our products, feel free to let us know by filling the technical support form below. After submitting your request for... Tristan – View this message in context: [http://gnuradio.4.n7.nabble.com/Modifying-gr-air-modes-to-work-with-Nutaq-s-Zepto-Pico-tp46634p46671.html](http://gnuradio.4.n7.nabble.com/Modifying-gr-air-modes-to-work-with-Nutaq-s-Zepto-Pico-tp46634p46671.html) Sent from the GnuRadio mailing list archive at [Nabble.com](http://Nabble.com).