Setting priority of interrupt using attachInterrupt()

[hemsy]

Is there an easy way to set the priority of an interrupt that was set up using the attachInterrupt() function? A better way?

Thanks!

 

[hemsy]

Aha, I found Paul's video.
https://www.pjrc.com/fast-pulse-counting-with-interrupts-and-why-nested-priority-really-helps/
Just need to figure out the port number, I think port 6 should be IRQ_PORTG, will see if this works.

 

[hemsy]

And... solved. Looks like the IRQ's for all of the pins are lumped together under one roof, and can be set up with:

NVIC_SET_PRIORITY(IRQ_GPIO6789, 0);

 

[defragster]

That is true for the 1062 MCU based Teensy units. The MCU design for fast I/O implemented in PJRC startup puts port 6789 I/O on that single interrupt handler.

That is not the case for T_3.x or T_LC. It is important to note what Teensy is in use.

 

[hemsy]

Thanks. I'm using Teensy 4.0, so I'm good. I only need to handle about 800 kHz, and I also discovered in this process that my ISR was overrunning that time period, not a good thing.