Re: [rtl] Floating point in "restricted" code

[Paolo Mantegazza]

Pavel Andris wrote:

> You may consider a problem, FP is not allowed in interrupt service routine
> (ISR).

Who said that?

> The remedy is, write only a short ISR, that wakes up a RT-thread
> (pthread_wakeup_np()) and returns. Having finished the job, the RT-thread
> suspends itself (pthread_suspend_np).

That's your idea for paying more than needed, the task switch cost. 

USE THE HARD FPU IN ISRs, there is no need to have a scheduler around if
you are using a task just as a buddy of an interrupt handler.

Ciao, Paolo.
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