Why RTEMS timeslice is not as configured.

[Fernando Nicodemos]

Guys,

Problem solved.
I forgot to configure the register in the right way, exactly with the
correct oscillator value. In this case our board use a 24MHz external
oscilator. ERC32 core and system runs at 12MHz with this oscillator. So the
function the configure this is:

#include <stdint.h>
#include "hardware.h"
#include <bsp.h>

void hardware_setup(void)
{

  CLOCK_SPEED =
12
; // <---- use the right ERC32 core clock value here
(half from external oscilator)

  /* approximately 1 us per countdown */
  ERC32_MEC.Real_Time_Clock_Scalar  = CLOCK_SPEED - 1;
  ERC32_MEC.Real_Time_Clock_Counter =
      rtems_configuration_get_microseconds_per_tick();

  ERC32_MEC_Set_Real_Time_Clock_Timer_Control(
      ERC32_MEC_TIMER_COUNTER_ENABLE_COUNTING |
        ERC32_MEC_TIMER_COUNTER_LOAD_SCALER |
            ERC32_MEC_TIMER_COUNTER_LOAD_COUNTER
    );

    ERC32_MEC_Set_Real_Time_Clock_Timer_Control(
      ERC32_MEC_TIMER_COUNTER_ENABLE_COUNTING |
            ERC32_MEC_TIMER_COUNTER_RELOAD_AT_ZERO);

}


Thanks to all

Regards
>
>
> *Fernando G. Nicodemos*
> *Diretor de Pesquisa e Desenvolvimento
>
> ***®*NCB - Sistemas **Embarcados Ltda.*
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> 2013/8/14 Chris Johns <chrisj at rtems.org>
>
>> Fernando Nicodemos wrote:
>>
>>> Guys, problems solved.
>>>
>>> We forgot to change the right clock value in linkcomands.
>>> Our board works on 12MHz in the core.
>>>
>>>
>> Well done. It may pay to post to the list this.
>>
>> Chris
>>
>
>
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