MQX Software SolutionsのトピックRe: MQX task tick

MQX task tick

Mohsin455 — Sat, 19 May 2012 07:16:44 GMT

Hi,

I am using MQX 3.8 and TWRK60N512. The tick rate is set to 5ms in the mQX. I want to know what happens when the I use _time_delay(1) as the task tick is 5ms.

So what is the minimum delay I can use with _time_delay() when the tick rate is 5ms ?

Thanks,

Mohsin

Re: MQX task tick

c0170 — Sun, 20 May 2012 02:31:11 GMT

Hi Mohsin455,

Minimum resolution is 5ms if it's set to 5ms (BSP ALARM FREQ = 200). When you pass number below 5 as an argument in this case, you'll get the minimum resolution.

Regards,

MartinK

Re: MQX task tick

Mohsin455 — Mon, 21 May 2012 02:00:48 GMT

Hi MartinK,

Thnaks for your reply. So it might be that we get lower than 5ms depending on when we are calling _time_delay(1) i.e. if we call _time_delay(1) just before the next tick then it will occur when the next tick happens.

Also what if we give anything above 5 and below 10 ? Does it work in similar way (i.e. it only delays till the next tick).

PLease confirm ?

Thanks,

Mohsin

Re: MQX task tick

c0170 — Mon, 21 May 2012 17:21:21 GMT

Hi Mohsin455,

I might have not clarified it well enough :smileyhappy:

What you have written is correct.

Regards,

MartinK

Re: MQX task tick

RichardR — Thu, 24 May 2012 22:10:26 GMT

_time_delay will suspend for at least the amount of time you specify.

Re: MQX task tick

Mohsin455 — Fri, 25 May 2012 18:17:42 GMT

Yes,

But only when the tick rate the >= the amount you specify.

Regards,

Mohsin

Re: MQX task tick

RichardR — Fri, 25 May 2012 21:51:01 GMT

It should always delay for AT LEAST as long as you specify in _time_delay, it may well be longer, depending on the system tick, other tasks running, etc.