On 04/23/2012 03:25 PM, Andrey Nechypurenko wrote:
>>> Following my tests with PWM generation using GPIO in user space [1],
>>> I've made the RTDM module [2] to further reduce the jitter. As a
>>> result, jitter was improved, but still under heavy system load the
>>> servo motor I am trying to cont
>> Following my tests with PWM generation using GPIO in user space [1],
>> I've made the RTDM module [2] to further reduce the jitter. As a
>> result, jitter was improved, but still under heavy system load the
>> servo motor I am trying to control starts shaking. Now, I fill stuck
>> and hope to ge
On 04/23/2012 01:56 PM, Andrey Nechypurenko wrote:
> Hi Folks,
>
> Following my tests with PWM generation using GPIO in user space [1],
> I've made the RTDM module [2] to further reduce the jitter. As a
> result, jitter was improved, but still under heavy system load the
> servo motor I am trying
On 04/23/2012 02:57 PM, Andrey Nechypurenko wrote:
retval = rtdm_task_init(&pwm_task[i], // there is currently only one
element in this array
"pwm-task",
pwm_task_proc,
0,
RTDM_TASK_HIGHEST_PRIORITY,
> Another trick, which this time really is a workaround is to program the
> timers to wake up a little bit early, and spin to wait for the exact
> time wanted.
Sounds like the black magic exercise! :-) I would try to stay on the
bright side as long as I can :-)
Thanks Gilles! It is really great t
On 04/23/2012 02:51 PM, Gilles Chanteperdrix wrote:
> On 04/23/2012 02:35 PM, Andrey Nechypurenko wrote:
retval = rtdm_task_init(&pwm_task[i], // there is currently only one
element in this array
"pwm-task",
pwm_task_proc,
retval = rtdm_task_init(&pwm_task[i], // there is currently only one
element in this array
"pwm-task",
pwm_task_proc,
0,
RTDM_TASK_HIGHEST_PRIORITY,
2
On 04/23/2012 02:35 PM, Andrey Nechypurenko wrote:
>>> retval = rtdm_task_init(&pwm_task[i], // there is currently only one
>>> element in this array
>>> "pwm-task",
>>> pwm_task_proc,
>>> 0,
>>> RTDM_TASK_HIGHE
On 04/23/2012 02:27 PM, Gilles Chanteperdrix wrote:
> On 04/23/2012 01:56 PM, Andrey Nechypurenko wrote:
>> Hi Folks,
>>
>> Following my tests with PWM generation using GPIO in user space [1],
>> I've made the RTDM module [2] to further reduce the jitter. As a
>> result, jitter was improved, but st
>> retval = rtdm_task_init(&pwm_task[i], // there is currently only one
>> element in this array
>> "pwm-task",
>> pwm_task_proc,
>> 0,
>> RTDM_TASK_HIGHEST_PRIORITY,
>> 2000); // 20ms
On 04/23/2012 01:56 PM, Andrey Nechypurenko wrote:
> Hi Folks,
>
> Following my tests with PWM generation using GPIO in user space [1],
> I've made the RTDM module [2] to further reduce the jitter. As a
> result, jitter was improved, but still under heavy system load the
> servo motor I am trying
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