padenot

Hi future travelers. I have also got the grid working although it took me a bit. I'm going to leave some notes here in case it might be useful.

This script is a total success for me: https://github.com/giuliomoro/bela-utils/blob/master/bela-setup-monome.sh (thank you @giuliomoro and @padenot !!)

You also need to generate a monome config file. You can generate this config file by following these instructions. Just make sure that you can use those instructions to generate the file in ~/.config/serialosc/.

Once you have the config file, you need to change one line in the /lib/systemd/system/serialoscd.service to use it:

ExecStart=/usr/local/bin/serialoscd -c ~/.config/serialosc/

That will make sure that it uses the config you generated and serialoscd doesn't switch ports everytime the Bela turns on.

Then

systemctl daemon-reload
systemctl restart serialoscd

will get it going.

Using monome in code is pretty easy. Here's basically what I did in render.cpp(full code: https://github.com/schollz/palms/blob/53a85b62d11be26054f162b30342bb01b6c967e4/render.cpp#L12):

...
#include <monome.h>

// monome
monome_t* monome;
unsigned int grid[16][16] = {[0 ... 15][0 ... 15] = 0};
#define MONOME_DEVICE "osc.udp://127.0.0.1:14656/monome"

void handle_press(const monome_event_t* e, void* data) {
    unsigned int x, y;

    x = e->grid.x;
    y = e->grid.y;

    /* toggle the button */
    grid[x][y] = !grid[x][y];
    monome_led_set(e->monome, x, y, grid[x][y]);
}

static void monome_loop(void*) { // monome_event_loop(monome);
    while (!Bela_stopRequested()) {
        monome_event_handle_next(monome);
    }
    monome_close(monome);
}



bool setup(BelaContext* context, void* userData) {
    /* open the monome device */
    if (!(monome = monome_open(MONOME_DEVICE, "8000")))
        return -1;
    monome_led_all(monome, 0);
    /* register our button press callback */
    monome_register_handler(monome, MONOME_BUTTON_DOWN, handle_press, NULL);
    Bela_runAuxiliaryTask(monome_loop);
    ...

One important note is that the port you use for #define MONOME_DEVICE "osc.udp://127.0.0.1:14656/monome" needs to have the port (mine is 14656) match what is in your config file. You can find your port by running cat ~/.config/serialosc/*, for example it gives me:

server {                  
  port = 14656            
}                         
application {             
  osc_prefix = "/monome"  
  host = "127.0.0.1"      
  port = 8000             
}                         
device {                  
  rotation = 0            
}                         

So you can see that I use port 14656 for everything and define that in my render.cpp

Thanks @giuliomoro and @padenot - much appreciated. I'l report back when I have taken some more action! :-)

The above setup should work reliably, but I don't have a Monome so I couldn't try it out. @padenot may also be able to say something about how it worked for him. Because of how the BBG + Bela cape are mounted in Salt, you will need to solder some wires to the back of your BeagleBone to break out the UART signals.

giuliomoro yes, I removed them as the fields didn't appear to exist anymore in the new BelaInitSettings struct. I assume

int unused1;
char unused2[MAX_UNUSED2_LENGTH];

is where they used to be? Since @andrewcsmith 's bela-sys generates the Rust structs directly from the header, binary compatibility wasn't helpful. It may work with @padenot 's bela-sys since that one doesn't auto-generate the Rust code, in that case I could add them back in (but everything would have to be binary compatible and it could silently break in the future).