chris@521: #N canvas 736 167 442 1518 10;
chris@521: #X text 32 20 Using Puredata (libpd) on Bela;
chris@521: #X text 32 30 ==============================;
chris@521: #X obj 100 538 osc~ 440;
chris@521: #X obj 100 560 *~ 0.1;
chris@521: #X obj 100 582 dac~;
chris@521: #X text 33 501 Here's how you produce a sine wave out of Bela's stereo
chris@521: output:;
chris@521: #X text 33 611 Similarly \, Bela's stereo input can be addressed as
chris@521: follows:;
chris@521: #X obj 100 642 adc~;
chris@521: #X obj 100 664 dac~;
chris@521: #X text 177 653 Audio pass-through;
chris@521: #X text 33 1581 Supported objects;
chris@521: #X text 33 1591 -----------------;
chris@521: #X text 33 1625 All native pd (vanilla) objects can be used.;
chris@521: #X text 33 1611 By default Bela uses libpd to run puredata patches.
chris@521: ;
chris@521: #X text 33 1645 It is also possible to compile pd objects to optimised
chris@521: ;
chris@521: #X text 33 1658 C code using the Heavy Cloud Compiler \, in which case
chris@521: ;
chris@521: #X text 33 1671 a different set of objects is supported (see below).
chris@521: ;
chris@521: #X text 33 701 Analog I/O;
chris@521: #X text 33 711 ----------;
chris@521: #X text 33 731 Analog inputs and outputs are treated as audio signals
chris@521: and;
chris@521: #X text 33 745 are addressed using the next 8 channels of the [adc~]
chris@521: and;
chris@521: #X text 33 759 [dac~] objects:;
chris@521: #X obj 36 785 adc~ 3 4 5 6 7 8 9 10;
chris@521: #X text 191 785 Analog Inputs 0 \, 1 \, 2 \, 3 \, 4 \, 5 \, 6 \, 7
chris@521: ;
chris@521: #X text 191 815 Analog Outputs 0 \, 1 \, 2 \, 3 \, 4 \, 5 \, 6 \, 7
chris@521: ;
chris@521: #X obj 36 815 dac~ 3 4 5 6 7 8 9 10;
chris@521: #X text 33 853 examples.;
chris@521: #X text 33 891 MIDI;
chris@521: #X text 33 901 ----;
chris@521: #X text 99 921 and;
chris@521: #X obj 36 920 notein;
chris@521: #X obj 125 920 ctlin;
chris@521: #X text 183 921 objects can be used to interface MIDI devices;
chris@521: #X text 33 939 with the patch.;
chris@521: #X text 33 954 Most MIDI devices can be plugged into the Beaglebone's
chris@521: USB;
chris@521: #X text 33 968 port and can be used with these objects.;
chris@521: #X text 33 839 See the 'BasicAnalogIn' and 'BasicAnalogOut' projects
chris@521: for;
chris@521: #X text 33 983 See the 'hello-midi' and 'midi-poly-synth' projects
chris@521: for more;
chris@521: #X text 33 997 for examples.;
chris@521: #X obj 57 1058 print;
chris@521: #X text 33 1058 The;
chris@521: #X text 115 1058 object can be used to log messages directly to Bela's
chris@521: ;
chris@521: #X text 33 1076 terminal output (e.g. as viewable in the browser IDE).
chris@521: ;
chris@521: #X obj 100 1102 loadbang;
chris@521: #X obj 100 1146 print;
chris@521: #X msg 100 1124 Puredata says: 'Hello Bela!';
chris@521: #X text 33 1041 ----------------;
chris@521: #X text 33 1031 Debugging: print;
chris@521: #X text 33 1191 ----------------;
chris@521: #X text 33 1181 Debugging: scope;
chris@521: #X text 33 1208 Any signal can be visualised using Bela's browser-based
chris@521: ;
chris@521: #X text 33 1222 scope. DAC channels 27 \, 28 \, 29 \, 30 address four
chris@521: separate;
chris@521: #X text 33 1236 scope channels.;
chris@521: #X obj 147 1309 dac~ 27 28 29 30;
chris@521: #X obj 79 1261 osc~ 440;
chris@521: #X obj 149 1261 noise~;
chris@521: #X obj 209 1261 osc~ 880;
chris@521: #X obj 209 1283 *~;
chris@521: #X text 33 1364 visualised.;
chris@521: #X text 33 1710 Compiling Puredata patches with Heavy;
chris@521: #X text 33 1720 -------------------------------------;
chris@521: #X text 33 1740 As an alternative to libpd \, Puredata patches can
chris@521: be;
chris@521: #X text 33 1754 converted into optimised C code using the Heavy Cloud
chris@521: ;
chris@521: #X text 33 1768 Compiler by Enzien Audio. The resulting code can result
chris@521: ;
chris@521: #X text 33 1782 in large increases in performance and is therefore
chris@521: well;
chris@521: #X text 33 1796 suited for complex patches and final stages of development.
chris@521: ;
chris@521: #X text 33 1810 We recommend to use libpd for prototyping and less
chris@521: CPU;
chris@521: #X text 33 1824 intensive patches.;
chris@521: #X text 33 1838 See our documentation to learn more about compiling
chris@521: patches;
chris@521: #X text 33 1852 using Heavy \, and visit enzienaudio.com for more info
chris@521: and;
chris@521: #X text 33 1866 a list of currently supported objects.;
chris@521: #X text 33 1401 Combining Pd and C++;
chris@521: #X text 33 1411 --------------------;
chris@521: #X text 33 1428 There are many cases where it is useful to combine
chris@521: Pd;
chris@521: #X text 33 1442 patches with C++ code \, for example when needing to
chris@521: ;
chris@521: #X text 33 1456 incorporate system calls (e.g. networking) or for;
chris@521: #X text 33 1470 sample-accurate dsp processes that are inconvenient
chris@521: ;
chris@521: #X text 33 1484 to program in Puredata.;
chris@521: #X text 33 1517 is used \, which functions as a libpd wrapper. It is
chris@521: ;
chris@521: #X text 33 1504 When running Puredata patches a template render.cpp
chris@521: file;
chris@521: #X text 33 1531 possible to modify this file when starting a new pd
chris@521: project.;
chris@521: #X text 33 1545 See the 'CustomRenderFile' example project for more
chris@521: info.;
chris@521: #X text 177 560 Sine Wave;
chris@521: #X obj 149 1283 *~ 0.1;
chris@521: #X obj 279 1261 osc~ 0.5;
chris@521: #X text 33 1350 click the scope button to see the above signals being
chris@521: ;
chris@521: #X text 33 1336 If you're viewing this patch using the Bela IDE you
chris@521: can;
chris@521: #X text 33 221 Patches can be drag-and-dropped into the browser IDE
chris@521: ;
chris@521: #X text 33 235 and will be added to the current project that is open.
chris@521: ;
chris@521: #X text 33 249 In order for the patch to run you need to fulfill the
chris@521: ;
chris@521: #X text 33 263 following two requirements:;
chris@521: #X text 59 285 a) The top-level patch needs to be named '_main.pd'
chris@521: ;
chris@521: #X text 77 298 (you can still use abstractions);
chris@521: #X text 59 315 b) Make sure there is no 'render.cpp' file inside;
chris@521: #X text 77 328 the project. A template file will be used instead;
chris@521: #X text 77 342 which acts as a wrapper for libpd.;
chris@521: #X text 77 355 Alternatively you can modify this wrapper and place
chris@521: ;
chris@521: #X text 77 368 it inside the project. See below for more information.
chris@521: ;
chris@521: #X text 33 61 Puredata patches can easily be run on Bela. There are
chris@521: two;
chris@521: #X text 33 75 ways of doing this: using libpd (which is compatible
chris@521: with;
chris@521: #X text 33 89 the browser-based IDE) or using the Heavy cloud compiler
chris@521: ;
chris@521: #X text 33 103 by Enzien Audio.;
chris@521: #X text 33 123 This guide focuses mainly on using libpd via the browser
chris@521: \,;
chris@521: #X text 33 137 however most of the functionality is compatible across
chris@521: both;
chris@521: #X text 33 151 solutions.;
chris@521: #X text 33 191 Loading and running patches in the Bela IDE;
chris@521: #X text 33 201 -------------------------------------------;
chris@521: #X text 33 471 Audio I/O;
chris@521: #X text 33 481 ---------;
chris@521: #X text 33 392 If you're viewing this inside the Bela IDE \, then you've
chris@521: ;
chris@521: #X text 33 406 noticed by now that all pd patches can be previewed
chris@521: within;
chris@521: #X text 33 420 the browser. Note \, however \, that patches cannot
chris@521: currently;
chris@521: #X text 33 434 be edited or interacted with inside this preview.;
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chris@521: #X connect 3 0 4 0;
chris@521: #X connect 3 0 4 1;
chris@521: #X connect 7 0 8 0;
chris@521: #X connect 7 1 8 1;
chris@521: #X connect 43 0 45 0;
chris@521: #X connect 45 0 44 0;
chris@521: #X connect 54 0 53 0;
chris@521: #X connect 55 0 83 0;
chris@521: #X connect 56 0 57 0;
chris@521: #X connect 57 0 53 2;
chris@521: #X connect 83 0 53 1;
chris@521: #X connect 84 0 57 1;
chris@521: #X connect 84 0 53 3;