[Ovmsdev] CAN-3 broken again?

[Michael Balzer]

Mark,

Am 11.01.2018 um 01:35 schrieb Mark Webb-Johnson:
> Every other task is created on core #1. Supposedly our App runs on core #1, and wifi/bluetooth run on core #0. Why is can::can CAN_rxtask
> running on core #0?

See my post "can1 TX performance solved" (Dec 31):

> Turned out this was no hardware issue but a scheduler problem: the CAN rx and vehicle rx tasks were not scheduled often & fast enough to
> consistently keep up with the 10 ms period.
>
> After assigning the CAN RX task to core 0 and raising the vehicle task priority to 10, there are no more TX overflows, and my charge control
> override works perfectly.

It's just a first attempt to optimize core & priority assignment to better utilize the dual core system. We sure can do some more optimization
on this.

Core #0 is called the "protocol core" by Espressif, from my understanding it's the preferred core for communication processes & driver tasks.
The cores are identical, we can also use another assignment scheme:

https://dl.espressif.com/doc/esp-idf/latest/api-guides/freertos-smp.html

Regards,
Michael

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