timer with varying periods
显示 更早的评论
Hi all!
I am running a test setup where I need to take measurements at varying intervals that are between the values of 47 < T < 53 seconds.
By this I mean, the period between executions of TimerFcn is not a constant value, rather a random value between 47 and 53.
Do you guys know if this is possible with the timer function?
I checked the 'Period' property of Timer(), and it takes a double value, not a function.
This is how I have my code set up right now.
getMeasurementsTimer = timer();
set(getMeasurementsTimer, 'executionmode', 'fixedRate', 'period', data);
set(getMeasurementsTimer, 'StartFcn', {'startTest', hObject});
set(getMeasurementsTimer, 'TimerFcn', {'getTemp', hObject});
3 个评论
Jan
2012-12-19
What are "varying intervals"? Do you want to start the timer at time=47 sec and stop it 6 seconds later?
Daniel Shub
2012-12-19
There currently is not enough information to answer this question. Please edit the question and reopen.
采纳的回答
Sean de Wolski
2012-12-19
0 个投票
I don't know of this being possible, but it is certainly a good idea for an enhancement request.
Here is how I would tackle this:
- Have the timer only execute once, i.e. 'TasksToExecute' = 1.
- In the 'TimerFcn' have it start a new timer with a StartDelay equivalent to your new period.
- Finally at the end of the 'TimerFcn', have it delete the timer calling it so you don't end up with hundreds of timers
2 个评论
Dan
2017-5-15
Would be nice to be able to dynamically change the timer period 'on the fly' ...
desire is 'fixed rate' timer within the callback of which I'd like to modify the period to be used for the current period. While changing the period of the current interval is desired, changing the period of the next interval would be acceptable.
In lieu of this enhancement, I'll have to use the 'startat' feature to restart the timer at the appropriate time given the time passed to the callback in the current callback.
Amira chriki
2020-4-16
Can you please give me more details about how to change the timer's period inside the same timer timerFcn?
更多回答（1 个）
Martin Grden
2020-10-7
TimerFcn(objh,event)
...
% at the end of your TimerFcn:
stop(opjh);
opjh.Period=newPeriod;
opjh.StartDelay=newPeriod;
start(opjh);
类别
在 帮助中心 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息
产品
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
