Dear "J. William Campbell", In message <4ddac866.1050...@comcast.net> you wrote: > > > Is there any reason why we cannot silently perform a reset_timer() any time > > set_timer() is called with a parameter of 0? > Hi All, > I assume you mean get_timer(0)? In principle, you cannot do this > because it could be inside another get_timer(0) loop that has already > some time elapsed before you hit the inner get_timer(0). I think what > needs to happen on the old NIOS with 10 ms resolution on the interrupt > times is that all timer intervals must have 10 ms added and then rounded > up to the nearest multiple of 10. Thus, if you wanted to wait for 1 > millisecond, you must use an argument of 20 ms to be sure you wait at > all! If you use an argument of 10, it won't help because you could get > an interrupt right away and exit. If these routines are nios2 specific, > you could add a local reset_timer, but I assume they are generic. . Note > that if these routines are not nios2 specific, is there any harm in > waiting "too long"?
I think in the context of this rework get_timer() should be changed to take no argumen. Actually noe is needed, and if used as is now it can only cuse harm. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de Hindsight is an exact science. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
