Monome Grid / OSC / Bela

txarliema so, I thought it was properly installed and running, but it seems like actually it wasn't.

That's expected: we wouldn't necessarily install on our image everything that is reported to be working with Bela.

txarliema But (silly enough) I still don't know if I have to run serialoscd in order to make the monome connection active or serialoscd is just a program to monitor if the monome is connected.

I know nothing about it, but I would guess that serialoscd is a bridge between OSC and the monome: my guess is that it receives OSC messages from the user application and passes them over to the monome over serial, and also receives serial from the monome and passes it on as OSC to the user application. So, I guess it has to stay open throughout for the program to work!

txarliema or how to combine the C++ program to run serialoscd and my puredata patch.

that C++ program is really just doing the equivalent of starting serialoscd. You can replace it by starting serialoscd manually in a separate terminal (or in the console at the bottom of the IDE). These lines in padenot's script set serialoscd as a systemd service that will run automatically every time you start the board.

txarliema I also tried to change in my puredata patch the ports to [listen 17395( - [netreceive-u -b] and/or [connect localhost 17395( - [netsend -u -b] ... and didn't work neither

Judging from your log, serialoscd seems to use 17395 by default, so that is what you should have in Pd. But again, for this to work you need serialoscd to be running at the same time, either manually starting it in a separate terminal (or in the IDE), or by setting it up as a systemd process.

This is my understanding, judging from the information you provided and padenot's post, but without knowing anything about the specific program / hardware.

In every Bela program, there is a default main() function that takes care of parsing the command-line options and initializing and starting the audio engine. The user normally does not need to see this, however they can override if they so wish (for instance in order to parse custom command-line options).

txarliema I tried to add at the beginning of the render.ccp program of 08-PureData/customRender/ those lines:
#include <Bela.h>
#include <cstdlib>
int main() {
std::system("/root/serialosc/build/bin/serialoscd");
return 0;
}

this effectively replaces the default main() function in the Bela code, so that the only thing that gets executed is this function of yours (as it contains no calls to the Bela_...() functions).

systemd on the board manages which programs run at startup. For instance, it manages when and how to start the networking between the board and your computer, and it manages the Bela program that runs at startup. In order to enable a program to run at startup, you need to create a bespoke systemd "unit". This is achieved by placing a file in /lib/systemd/system with the appropriate name and content, and then enabling it (either by calling systemctl enable or by creating a symlink to it into /etc/systemd/....

As mentioned earlier, padenot's script does exactly this.

giuliomoro These lines in padenot's script set serialoscd as a systemd service that will run automatically every time you start the board.

The lines I linked to above are copy/pasted below for your convenience:

cat << EOF > serialoscd.service
[Unit]
Description=simple
[Service]
Type=forking
ExecStart=serialoscd
PIDFile=/var/run/serialoscd.pid
RemainAfterExit=no
Restart=on-failure
RestartSec=5s
[Install]
WantedBy=multi-user.target
EOF

chmod 777 serialoscd.service
mv serialoscd.service /lib/systemd/system/serialoscd.service
ln -s /lib/systemd/system/serialoscd.service /etc/systemd/system/multi-user.target.wants/serialoscd.service

this is the equivalent of:
- creating a file serialoscd.service with this content:

[Unit]
Description=simple
[Service]
Type=forking
ExecStart=serialoscd
PIDFile=/var/run/serialoscd.pid
RemainAfterExit=no
Restart=on-failure
RestartSec=5s
[Install]
WantedBy=multi-user.target

making it executable and moving it to /lib/systemd/system/, and then calling systemctl enable serialoscd. Run the above lines once, and reboot: you should find out that serialoscd has already been started. To check its log, run: journalctl -fu serialoscd.