Here's how:
struct t_myexternal {
t_object x_obj;
t_clock *x_clock;
int x_running;
};
void tick(t_myexternal *x)
{
// do some work
// then reschedule (if not cancelled)
if (x->x_running)
clock_delay(x->x_clock, POLLINTERVAL);
}
void start(t_myexternal *x)
{
clock_delay(x->x_clock, 0);
x->x_running = true;
}
void stop(t_myexternal *x)
{
x->x_running = false;
}
void* myexternal_new(void)
t_myexternal *x = pd_new(myexternal_class);
x->x_clock = clock_new(x, (t_method)tick);
x->x_running = false;
}
Hope this helps!
Christof
On 29.04.2021 18:12, Kyriakos Charalampides via Pd-dev wrote:
I recently started learning how to write some custom pd externals. It has been
quite fun until now, but its been a few days I am stuck in a loop. I want to
read a buffer coming from an external device every 1 ms. I could do that with a
metro but this can cause several issues with this buffer.
My initial though was to use a for loop but this was obviously a horrible idea
since pd will stuck in the for loop and hang. Then I though to use a clock to
execute my reading function but all examples with clock and clock_delay seem to
be based on for and while loops. What I would really like to achieve is to
execute the reading function every 1ms and interrupt this process every time
that a new message is coming from pd.
Any tips or ideas will be highly appreciated.
All best,
Kyr
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