{"id":10479,"date":"2014-04-20T19:15:26","date_gmt":"2014-04-20T19:15:26","guid":{"rendered":"http:\/\/zerokidz.com\/ideas\/?p=10479"},"modified":"2014-06-24T03:40:21","modified_gmt":"2014-06-24T07:40:21","slug":"rtlsdr-pd-linux","status":"publish","type":"post","link":"https:\/\/reactivemusic.net\/?p=10479","title":{"rendered":"rtlsdr, Pd, linux"},"content":{"rendered":"
notes<\/h5>\n

Today was able to get the rtlsdr~ object running in Pd on Ubuntu 14.04 on a Macbook pro.<\/p>\n

Audio quality seems rough. The only driver I could get to work was Alsa at 44.1KHz – may be able to get help with this from Pd community.<\/p>\n

Ended up using 64bit libraries for librtlsdr and libusb-1.0 . In fact, needed to using the shared (.so) libraries, not the static ones (.a) due to a weird linker error. Its possible that it happened due to mixing shared and static and I might try again using both static for these 2 libs.<\/p>\n

See notes from previous post about issues with USB capture, and non-root user in Linux – there are 2 flags on the cmake for rtlsdr that might help resolve both of these, but I wasn’t having any luck and needed to use the method described in previous post.<\/p>\n

The source code for linux version is in the \/usr\/lib\/pd-extended\/extra\/rtlsdr~ folder – and the test pd file is in ~\/pd\/rtlSDR-block.pd, along with some abstractions.<\/p>\n

There is also a makefile to build a local version of rtl_fm (rtl_fm3.c) in ~\/rtl-sdr-new\/rtl-sdr\/rtl-fm3\/<\/p>\n

This makefile mixes the static and shared libs with no problem… hmm…?<\/p>\n

\n

next<\/p>\n<\/div>\n

Need to package this stuff up and send it to pdsdr github with source for Max\/Pd on mac and Pd on linux. + instructions… etc.,<\/p>\n

Would like to try running on r-pi – but will need to adapt the test patch to receive Osc messages because there is no gui on r-pi<\/p>\n

Also I am some skeptical about running at low sample rates for audio – we’ll see…<\/p>\n

\n

another note<\/p>\n<\/div>\n

Just thinking, that even if I am not able to run rtlsdr~ on r-pi that we could adapt rtl_fm so it receives control input from Pd using Osc and work that way…<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

notes Today was able to get the rtlsdr~ object running in Pd on Ubuntu 14.04 on a Macbook pro. Audio quality seems rough. The only driver I could get to work was Alsa at 44.1KHz – may be able to get help with this from Pd community. Ended up using 64bit libraries for librtlsdr and … <\/p>\n

Continue reading “rtlsdr, Pd, linux”<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","footnotes":""},"categories":[230,21,249],"tags":[296,128,190,57,254,243],"class_list":["post-10479","post","type-post","status-publish","format-standard","hentry","category-development","category-dsp","category-pd-2","tag-notebook","tag-pd","tag-portfolio","tag-radio","tag-rtl-sdr","tag-software-defined-radio"],"yoast_head":"\nrtlsdr, Pd, linux - reactive music<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/reactivemusic.net\/?p=10479\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"rtlsdr, Pd, linux - reactive music\" \/>\n<meta property=\"og:description\" content=\"notes Today was able to get the rtlsdr~ object running in Pd on Ubuntu 14.04 on a Macbook pro. 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