render.cpp file disables sound on bela: both microphone and osc pd patches

dywen · Feb 27, 2020

Hi,
When I use a simple mic test example, the electret microphone I use works, with live monitoring and all. When I add the
- render.cpp file, the
- I2C_MPR121.cpp
- I2C_MPR121.h
for the mpr121 Touch chip to this _main.pd patch, my microphone does not come through.

Same for a simple osc patch. No sound when the cpp's and .h files are added.
alt text

In the Console output from Bela I get:
Building project ...
Building render.cpp...
...done
Building I2C_MPR121.cpp...
...done
Extracting dependencies of library Midi
Extracting dependencies of library Scope
Extracting dependencies of library UdpServer
Linking...
...done
Build finished
Running project ...
Running Pd 0.48-2
No MIDI device enabled
bonk version 1.5
fiddle version 1.1 TEST4
pique 0.1 for PD version 23
sigmund~ version 0.07
root@bela ~/Bela#

---> Could it be midi related? I have no idea how to solve this. The render.cpp file for running the mpr121 is full of code around midi, but I don't know how they interact with the chip's being. In fact I have tried to take it out, but that was totally dramatic..
My patches with these files worked in August 2019
Here they are:

giuliomoro · Feb 27, 2020

are these the files you are using?

dywen · Feb 27, 2020

Yes, I was checking the paths to the libraries and they are fine and adapted as said in the instructions for the IDE

dywen · Feb 27, 2020

giuliomoro Yes, they are

giuliomoro · Feb 27, 2020

does the MPR121 example work on its own?

dywen · Feb 27, 2020

I have now reverted to my old render.cpp, and the I2CMPR121 files, adapted the library paths and now I get this error:
no matching function for call to 'sys_doio' column: 3, line: 343
/root/Bela/projects/Electret_test/render.cpp:343:3: error: no matching function for call to 'sys_doio'
sys_doio(pd_that);
^~~~
/usr/local/include/libpd/s_stuff.h:168:6: note: candidate function not viable: requires 0 arguments, but 1 was provided
void sys_doio();
^
1 error generated.

make: *** [/root/Bela/projects/Electret_test/build/render.o] Error 1

Line 343 gives:
#ifdef PD_THREADED_IO
void fdLoop(void arg){
t_pdinstance pd_that = (t_pdinstance)arg;
while(!gShouldStop){
sys_doio(pd_that);
usleep(3000);
}
}
#endif / PD_THREADED_IO */

dywen · Feb 27, 2020

giuliomoro Like a charm
Pretty bangs when touched

dywen · Feb 27, 2020

I do get this in the bela terminal when I run the I2CMPR121 on it's own:
1 mode switch detected on the audio thread.
Bela stopped
Building project ...
Build finished
Running project ...
Running Pd 0.48-2
No MIDI device enabled
bonk version 1.5
fiddle version 1.1 TEST4
pique 0.1 for PD version 23
sigmund~ version 0.07
output~
error: ... couldn't create
verbose(4): ... you might be able to track this down from the Find menu.
0: bang
1: bang

dywen · Feb 27, 2020

Which basically says sound output - could not create
--> What is verbose(4) and the Find menu?

giuliomoro · Feb 27, 2020

dywen --> What is verbose(4) and the Find menu?

those are printouts by Pd

dywen Which basically says sound output - could not create

interesting! you must be screwing something up pretty badly!

dywen I do get this in the bela terminal when I run the I2CMPR121 on it's own:

which project is this?

dywen /root/Bela/projects/Electret_test/render.cpp:343:3: error: no matching function for call to 'sys_doio'
sys_doio(pd_that);

fix this by removing pd_that from sys_doio(pd_that).

dywen · Feb 28, 2020

giuliomoro Which basically says sound output - could not create

interesting! you must be screwing something up pretty badly!

So, I added a |dac~| and the no sound output error disappeared
Late night forum posting
This is the Patch I'm using to test the MPR121

alt text

Output is perfect, a bang each time I touch the sensors:
Bela stopped
Building project ...
Building render.cpp...
...done
Extracting dependencies of library Midi
Extracting dependencies of library Scope
Extracting dependencies of library UdpServer
Linking...
...done
Build finished
Running project ...
Running Pd 0.48-2
No MIDI device enabled
bonk version 1.5
fiddle version 1.1 TEST4
pique 0.1 for PD version 23
sigmund~ version 0.07
0: bang
1: bang
2: bang
3: bang

-----> Back to post 1 in this Forum thread, still using these render.cpp and I2CMPR121 files: https://cloud.constantvzw.org/s/pNc45tZKRx2aRsQ
Which worked fine in August 2019, here's a video: http://www.wvanw.space/?p=322

(yesterday I worked with someone who's really good at pd, we have turned everything outside in)

dywen · Feb 28, 2020

In August 2019 this render.cpp for the mpr121 Touch sensor worked.
--> So I have reverted back to the IDE that was available at that time: v0.3.6b
And guess what, I have sound

So in the rewrite of the IDE something happened that disables sound in the render.cpp I have.

This was a lot of unnecessary misery...

giuliomoro · Feb 29, 2020

so it looks like your render.cpp file from here is missing these lines from the setup() function:

// start DSP:
// [; pd dsp 1(
libpd_start_message(1);
libpd_add_float(1.0f);
libpd_finish_message("pd", "dsp");

which are the equivalent of turning DSP on in Pd (i.e.: they are required to perform any audio processing), so without them it is normal that you won't hear anything.

Here is an attempt at integrating MPR121 into a modern version of Bela. Please try it and let me know how it goes

dywen · Mar 2, 2020

giuliomoro
yes, that did the trick! Very bizarre then that there is audio with the older IDE as it is logical to have to activate the dsp in PD. Non capisco - No lo entiendo - Ik begrijp dit niet - I don't understand.

I compared 'my render.cpp' a bit to the one for Trill (which can replace everything here.. and so it goes..).

Now the other work begins, making the interface and more complex and musical Pure Data Patches..
Thanks!
Ciaooo
w

giuliomoro · Mar 2, 2020

dywen Very bizarre then that there is audio with the older IDE as it is logical to have to activate the dsp in PD.

yes indeed, who knows?