- chuck-users - lists.cs.princeton.edu

chuck serial arduino weirdness
by Scott Smallwood 23 Apr '19

23 Apr '19

Dear chuckians, Not sure how many of you have messed with the serial objects - but I’m having a bit of a head-scratcher and wondered if anyone had any ideas about this. I built a little box with one knob and one switch - which I’m planning to use as a master volume and mute switch for a multichannel audio installation that is running in Chuck. The Arduino code is really basic: — const int SwitchPin = 12; const int VolPin = 0; void setup() { //turn on serial communication Serial.begin(57600); //set switch pin and turn on pullup resistor pinMode (SwitchPin, INPUT); digitalWrite (SwitchPin, HIGH); } void loop() { Serial.print(digitalRead(SwitchPin)); Serial.print(' '); Serial.println(analogRead(VolPin)); delay(50); } — OK - so I first built a little Max patch to test it, which works flawlessly as far as I can tell. I then wrote a little chuck script, based partially on one of Spencer’s examples. It simply grabs the data and prints it to the console. It works great for awhile, but after a few minutes, it always crashes with an array-out-of-bounds exception: NullPointerException: (array access) on line[35] I’m grabbing two ints, and looping through and printing them out. Why is the array size suddenly getting mucked up here? It’s intermittent, and sometimes doesn’t happen for several minutes, but always results in a crash eventually. Any ideas?? (chuck code below) — SerialIO.list() @=> string list[]; SerialIO cereal; //the name of my arduino box's serial port "usbserial-12DP0657" => string port; //number of serial device -1=>int device; //loop through any ports and find the one with the right name for(0=>int i; i < list.cap(); i++) { //check for correct port name if (list[i].find(port) != -1) { //and assign the device number i => device; } else -1 => device; } //open the serial port cereal.open(device, SerialIO.B57600, SerialIO.ASCII); //loop through and grab the serial port data while(true) { cereal.onInts(2) => now; cereal.getInts() @=> int ints[]; //print out to console for(0=>int i; i < ints.cap(); i++) //<- this is where the problem seems to happen { chout <= ints[i] <= " "; } chout <= IO.newline(); } —ss [ - ] Scott Smallwood <http://www.scott-smallwood.com/> - Associate Professor - University of Alberta [ - ]

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Re: [chuck-users] FLOSS Manual update
by Mario Buoninfante 09 Apr '19

09 Apr '19

Sorry Scott :( Anyway, sure let's have a chat in a couple of weeks, in the meanwhile I'll have a look at the tool Spencer shared. Cheers, Mario -- Electronic Musician, Creative Coder, QA Engineer https://vimeo.com/creativecodingsalerno http://mbuoninfante.tumblr.com https://github.com/mariobuoninfante https://bitbucket.org/mariobuoninfante On 9 Apr 2019 17:01, Scott Smallwood <ssmallwo(a)ualberta.ca> wrote: > > I’m Scott S actually… > > But yeah… I am going to admit right now that the next two weeks are hellish for me because I’m at the end of my term and doing lots of grading, installing a show, travelling, etc. > > (Incidentally, while I’ve done lots of ChucK work as a performer, and lots of generative sound installation work in general, this will be my first ever multi-week installation that is done with ChucK instead of Max. Two pieces actually - one plain ChucK and one Chunity!! Woo hoo!!) > > Anyway… once I get the next two weeks off my back, I’m happy to take a closer look at the Floss manual and see where I can be of help. > > And yes I agree - this tool of Spencer’s sounds very cool and promising! > > —ss > > [ - ] Scott Smallwood - Associate Professor - University of Alberta [ - ]

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FLOSS Manual update
by mario buoninfante 09 Apr '19

09 Apr '19

Hi, I just added 2 chapters (and updated an existing one), to the ChucK FLOSS manual (https://en.flossmanuals.net/chuck <https://l.facebook.com/l.php?u=https%3A%2F%2Fen.flossmanuals.net%2Fchuck%3F…>). * Array Object Functions * String Object Functions * Other Objects Reference (added FileIO and SeriaIO) There's still 'some' work to do to make the FLOSS manual really comprehensive, but we'll eventually get there Next step would probably be a bit of text formatting. Especially in the various 'reference' sections, there are too many 'styles'. Just a quick note about the FLOSS manual and ChucK documentation in general. What I always found difficult (especially at the begin of my adventure with ChucK), was the fact the the documentation wasn't centralized. There are plenty of places on the internet where you can find bits and bops, but none is really comprehensive (some are outdated, some just incomplete, and so on). I believe ChucK is now mature enough and needs a fully comprehensive (and official) documentation. The FLOSS manual could help with that (my personal opinion, open for discussions :) ). Wouldn't be easier if there was THE place where all the documentation is? Looking forward to hearing from you. In the meanwhile, give me a shout if you wanna help with the FLOSS manual, there's still plenty to do :P Cheers, Mario -- Electronic Musician, Creative Coder, QA Engineer https://vimeo.com/creativecodingsalerno http://mbuoninfante.tumblr.com/ https://github.com/mariobuoninfante https://bitbucket.org/mariobuoninfante/

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Re: [chuck-users] Date and Time (Mario)
by Perry Cook 07 Apr '19

07 Apr '19

Very interesting question, and I don’t know. In case the answer comes back no tho: I’ve done this by launching with the start time in a command line argument. Then added “now” to that to get current time. Prc Sent from my iPhone > On Apr 3, 2019, at 9:00 AM, chuck-users-request(a)lists.cs.princeton.edu wrote: > > Send chuck-users mailing list submissions to > chuck-users(a)lists.cs.princeton.edu > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users > or, via email, send a message with subject or body 'help' to > chuck-users-request(a)lists.cs.princeton.edu > > You can reach the person managing the list at > chuck-users-owner(a)lists.cs.princeton.edu > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of chuck-users digest..." > > > Today's Topics: > > 1. Get date and time (Mario Buoninfante) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 3 Apr 2019 14:17:32 +0100 > From: Mario Buoninfante <mario.buoninfante(a)gmail.com> > To: ChucK <chuck-users(a)lists.cs.princeton.edu> > Subject: [chuck-users] Get date and time > Message-ID: > <CAHs=M8RWDU89A9Lze1a_MTO1=fE7r0FKV4mio60RFLirnfNFKw(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Hi, > > Is there any way to get date and time in ChucK? I was hoping for something > that's not Std.system(). > > Cheers, > Mario >

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Get date and time
by Mario Buoninfante 03 Apr '19

03 Apr '19

Hi, Is there any way to get date and time in ChucK? I was hoping for something that's not Std.system(). Cheers, Mario

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Re: [chuck-users] Chuck Coding Style (Charlie)
by Perry Cook 01 Apr '19

01 Apr '19

Perhaps the Chuck Book might at least provide good examples. I don’t know of a formal style guide. I think we authors, while differing from each other, generally use OOP conventions we brought from C++, Java, (and myself) Objective C and Smalltalk. Prc Sent from my iPhone > On Apr 1, 2019, at 9:00 AM, chuck-users-request(a)lists.cs.princeton.edu wrote: > > Send chuck-users mailing list submissions to > chuck-users(a)lists.cs.princeton.edu > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.cs.princeton.edu/mailman/listinfo/chuck-users > or, via email, send a message with subject or body 'help' to > chuck-users-request(a)lists.cs.princeton.edu > > You can reach the person managing the list at > chuck-users-owner(a)lists.cs.princeton.edu > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of chuck-users digest..." > > > Today's Topics: > > 1. style manual for coding? (Possibly off topic) (Charlie) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 31 Mar 2019 18:53:29 -0400 > From: Charlie <taos.points(a)gmail.com> > To: chuck-users(a)lists.cs.princeton.edu > Subject: [chuck-users] style manual for coding? (Possibly off topic) > Message-ID: > <CAJVWGib11=E-Wf1p-6HRP-uk4mdhRdgEYg-WRGWddVBwhQLDzA(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > hey all, > > sorry if this is off topic but I'm starting to realize that my haphazard > coding style is becoming a problem, as I build a live coding practice based > in ChucK. I'm wondering if there is a "Strunk and White" for coding > covering stuff like indentation, naming conventions, when to use a function > or class for something, etc etc. My formal training in coding is limited to > a FORTRAN class that I took in the 1980s at the Department of Agriculture > but I've done some stuff in C, so a book oriented around C or C++ would > probably work. Thanks in advance! > > Charlie >

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style manual for coding? (Possibly off topic)
by Charlie 31 Mar '19

31 Mar '19

hey all, sorry if this is off topic but I'm starting to realize that my haphazard coding style is becoming a problem, as I build a live coding practice based in ChucK. I'm wondering if there is a "Strunk and White" for coding covering stuff like indentation, naming conventions, when to use a function or class for something, etc etc. My formal training in coding is limited to a FORTRAN class that I took in the 1980s at the Department of Agriculture but I've done some stuff in C, so a book oriented around C or C++ would probably work. Thanks in advance! Charlie

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issue adding elements to an array
by Mario Buoninfante 28 Mar '19

28 Mar '19

Sorry, this is the right code that shows 'the issue': function static void insert_1( string array[], string x, int pos ) { string mom_arr[0]; if( pos < array.size() && pos >= 0 ) { for( pos => int c; c < array.size(); c++ ) { mom_arr << array[c]; } x => array[ pos ]; array.size( array.size() + 1 ); for( 0 => int c; c < mom_arr.size(); c++ ) { mom_arr[c] => array[ c + pos + 1 ]; } } else if( pos == array.size() ) { array << x; } } function static void insert_2( string array[], string x, int pos ) { string mom_arr[0]; if( pos < array.size() && pos >= 0 ) { for( pos => int c; c < array.size(); c++ ) { mom_arr.size( mom_arr.size() + 1 ); array[c] => mom_arr[ c - pos ]; } x => array[ pos ]; array.size( array.size() + 1 ); for( 0 => int c; c < mom_arr.size(); c++ ) { mom_arr[c] => array[ c + pos + 1 ]; } } else if( pos == array.size() ) { array << x; } } ["a", "b", "c"] @=> string s_1[]; insert_1( s_1, "ONE", 1 ); for( 0 => int c; c < s_1.size(); c++ ) { <<< s_1[c] >>>; } <<< "" >>>; ["a", "b", "c"] @=> string s_2[]; insert_2( s_2, "ONE", 1 ); for( 0 => int c; c < s_2.size(); c++ ) { <<< s_2[c] >>>; }

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issue adding elements to an array
by Mario Buoninfante 28 Mar '19

28 Mar '19

Hi, I suspect I'm probably doing something stupid and just not realizing it, but I don't understand why these 2 functions ("insert_1" and "insert_2") are giving me 2 different results: function static void insert_1( string array[], string x, int pos ) { string mom_arr[0]; if( pos < array.size() - 1 && pos >= 0 ) { for( pos => int c; c < array.size(); c++ ) { mom_arr << array[c]; } x => array[ pos ]; array.size( array.size() + 1 ); for( 0 => int c; c < mom_arr.size(); c++ ) { mom_arr[c] => array[ c + pos + 1 ]; } } else if( pos == array.size() ) { array << x; } } function static void insert_2( string array[], string x, int pos ) { string mom_arr[0]; if( pos < ( array.size() ) && pos >= 0 ) { for( pos => int c; c < array.size(); c++ ) { mom_arr.size( mom_arr.size() + 1 ); array[c] => mom_arr[ c - pos ]; } x => array[ pos ]; array.size( array.size() + 1 ); for( 0 => int c; c < mom_arr.size(); c++ ) { mom_arr[c] => array[ c + pos + 1 ]; } } else if( pos == array.size() ) { array << x; } } ["a", "b", "c"] @=> string s_1[]; insert_1( s_1, "ONE", 1 ); for( 0 => int c; c < s_1.size(); c++ ) { <<< s_1[c] >>>; } <<< "" >>>; ["a", "b", "c"] @=> string s_2[]; insert_2( s_2, "ONE", 1 ); for( 0 => int c; c < s_2.size(); c++ ) { <<< s_2[c] >>>; } It seems like expanding an array with '<<' instead of using .size(int n) is giving me some problem. I'm on MacOS Sierra 10.12.6 Cheers, Mario

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Eval function
by Mario Buoninfante 28 Mar '19

28 Mar '19

Hi, Do we have anything like an 'eval' function in ChucK? Cheers, Mario

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