Clock ticks

[Daniel Gustafsson]

I forgot to tell you that I did "make clean" before doing "make all install"
and it still did not work.

I found a line in sparc/shared/start.S that said 10 MHz default. Have
changed this value and done a rebuild. This seams to work fine.

//Daniel
 

>-----Original Message-----
>From: Joel Sherrill <joel at OARcorp.com> 
>[mailto:joel.sherrill at OARcorp.com] 
>Sent: Monday, January 24, 2005 1:16 PM
>To: Daniel Gustafsson
>Cc: rtems-users at rtems.com
>Subject: Re: Clock ticks
>
>Daniel Gustafsson wrote:
>> I tried to change _CLOCK_SPEED in boardinit.S from 14 to 20 
>but nothing
>> happens (have done a "make all install"). The timing is 
>still wrong. Any
>> ideés?
>
>linkcmds is not a dependency on relinking.
>
>cd build
>rm -f `find . -name "*.exe"`
>make all install
>
>--joel
>
>> //Daniel
>> 
>> 
>> 
>> 
>>>-----Original Message-----
>>>From: Joel Sherrill <joel at OARcorp.com> 
>>>[mailto:joel.sherrill at OARcorp.com] 
>>>Sent: Friday, January 21, 2005 2:52 PM
>>>To: Daniel Gustafsson; rtems-users at rtems.com
>>>Subject: Re: Clock ticks
>>>
>>>Daniel Gustafsson wrote:
>>>
>>>>We are using ERC32 with 20Mhz but don't get the right 
>>>
>>>timing. What shall
>>>
>>>>CONFIGURE_MICROSECONDS_PER_TICK be in our system?
>>>
>>>Check the value of _CLOCK_SPEED when it is being set in boardinit.S
>> 
>>>from this BSP.  It appears to default to 14 to indicate 14 Mhz.
>> 
>>>--joel
>>>
>>>
>>>>//Daniel
>>>> 
>>>>
>>>>
>>>>
>>>>>-----Original Message-----
>>>>>From: Joel Sherrill <joel at OARcorp.com> 
>>>>>[mailto:joel.sherrill at OARcorp.com] 
>>>>>Sent: Friday, January 21, 2005 1:21 PM
>>>>>To: Ralf Corsepius
>>>>>Cc: Daniel Gustafsson; RTEMS Users
>>>>>Subject: Re: Clock ticks
>>>>>
>>>>>Ralf Corsepius wrote:
>>>>>
>>>>>
>>>>>>On Fri, 2005-01-21 at 10:52 +0100, Daniel Gustafsson wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>>How do I inform Rtems 4.6.2 that I am running on a 20Mhz CPU.
>>>>>>>
>>>>>>>I've tried to alter MICRO_SECONDS_PER_TICK but i can't 
>>>>>
>>>>>figure out how it is
>>>>>
>>>>>
>>>>>>>done properly (correct value).
>>>>>>
>>>>>>It's highly BSP and target specific. Which target, which 
>BSP are you
>>>>>>using?
>>>>>
>>>>>If memory servers, they are on a SPARC/ERC32.  It should work
>>>>>because the BSP will do math in the clock driver to convert the
>>>>>configured value into the value used to program the timer.
>>>>>
>>>>>The constant you are using should be 
>CONFIGURE_MICROSECONDS_PER_TICK
>>>>>and it should be set BEFORE you include confdefs.h.
>>>>>
>>>>>--joel
>>>>>
>>>>
>>>>
>>>	
>>>
>>>-- 
>>>Joel Sherrill, Ph.D.             Director of Research & Development
>>>joel at OARcorp.com                 On-Line Applications Research
>>>Ask me about RTEMS: a free RTOS  Huntsville AL 35805
>>>   Support Available             (256) 722-9985
>>>
>> 
>>>
>> 
>
>
>-- 
>Joel Sherrill, Ph.D.             Director of Research & Development
>joel at OARcorp.com                 On-Line Applications Research
>Ask me about RTEMS: a free RTOS  Huntsville AL 35805
>    Support Available             (256) 722-9985
>
>