Re: [uracoli-devel] regarding the hif_put_blk() function

[Charles Goyard]

Hi all,

rifo rifo wrote:
> This is my first post to uracoli list.

Me too ;). Welcome !

> why don't we use a sei() at the end of the hif_put_blk() function.

That's a very common pattern in avr code :
- store current status of SREG ;
- disable interrupts, regardless of wether they are enabled or not
  (faster than test && disable) ;
- do uninterruptible stuff ;
- restore the previous state of SREG.

It is done that way so that if interrupts where disabled before calling
the function, we don't enable them.

Hope that helps,

-- 
Charles