topic Re: Can the unit of Task time slice be changed? in MQX Software Solutions

Can the unit of Task time slice be changed?

george — Tue, 25 Dec 2012 10:46:52 GMT

Hi all,

I'm using MQX 3.8.1 on TWR-K60N512.

And, the scheduling of MQX Task uses Round robin.

I want to set the Time slice of Tasks to 100uSec.

Is the setting possible?

If possible, please tell me the way.

Best regards,

George

Re: Can the unit of Task time slice be changed?

Swapnil_Enable — Wed, 26 Dec 2012 06:05:15 GMT

u can set it by changing the Task Templete. Please refer 3.2.20 in MQXRM pdf or 3.2.2 in MQXUG.pdf.

location would be C:\Program Files\Freescale\Freescale MQX 3.8\doc\mqx

ex:

{INIT_TASK, init_Task,

800, 9, "initTask", MQX_AUTO_START_TASK, 0, 100},

the bold on will change the time slice of task.

Re: Can the unit of Task time slice be changed?

george — Thu, 27 Dec 2012 04:01:09 GMT

Hi Katre,

In my understanding, The default time unit of slice is milliseconds.

I want to set time slice fewer than the minimum which can set it.

Plase tell me how to change to microsec from millisec.

Best Regards,

George

Re: Can the unit of Task time slice be changed?

JuroV — Mon, 31 Dec 2012 11:56:52 GMT

Hello,

the default time slice unit is number of ticks. Ticks are set by the frequency of the system timer in the <board>.h file.

Re: Can the unit of Task time slice be changed?

Swapnil_Enable — Wed, 02 Jan 2013 10:41:46 GMT

Thanks Juraj, George i to agree with him, as per my knowledge....the time setting works on ticks so u can make it to microsec....u need to do some calculation to get ur desired number

Re: Can the unit of Task time slice be changed?

george — Mon, 07 Jan 2013 10:06:27 GMT

Thanks Juraj and Swapnil,

Is the parameter which you say the following?

#ifndef BSP_ALARM_FREQUENCY

#define BSP_ALARM_FREQUENCY (200)

#endif

Is my understanding correct?

Best Regards,

George

Re: Can the unit of Task time slice be changed?

JuroV — Mon, 07 Jan 2013 10:24:15 GMT

Yes, that's the parameter.

Re: Can the unit of Task time slice be changed?

george — Mon, 07 Jan 2013 10:28:31 GMT

Thanks Juraj,