Pavel Andris wrote:
> So, Victor, Paolo could you please make things clear for us? By the
> way, in my application would ISR last several milliseconds (robot's
> sample period computations, heavy use of FPU) that's why I tend to
> "pay more than needed".
My opinion is not a must, is just an opinion. Take into account that all
techinical solution are a tradeoff between conflicting needs.
My statement is that, if there is just one timed hard real time task
I'll do what I need in the timer interrupt handler. If I want to be
undisturbed I keep inturrupt disabled. If I want to let Linux others
interrupt to at least register I enable interrupt and ack the PIC
controller. In the latter case it is as being in a task but it will be
simpler and more effective.
You can do it as you want, my attitude is that Linux constraints are not
mine. When I'm working in real time Linux must be my stupid servant and
hardware is just mine.
Ciao, Paolo.
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