timer function is not executing the function i am providing ,please help me with this?

Question

Shivank Anchal 2019-6-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/466284-timer-function-is-not-executing-the-function-i-am-providing-please-help-me-with-this

回答： Steven Lord 2019-6-10

this is in script window:

function ritik

for x=1:10

start(t)

stop(t)

disp(x)

end

this is in command window:

>> global t

>> t=timer('timerfcn',ritik,'startdelay',2)

Error using ritik

Too many output arguments.

>>

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

LO 2019-6-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/466284-timer-function-is-not-executing-the-function-i-am-providing-please-help-me-with-this#answer_378509

编辑：LO 2019-6-10

ritik does not seem to be a matlab function, could you post your code ?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

Answer 2

Shivank Anchal 2019-6-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/466284-timer-function-is-not-executing-the-function-i-am-providing-please-help-me-with-this#answer_378520

在 MATLAB Online 中打开

function ritik
for x=1:10
    start(t)
    stop(t)
    disp(x)
end
>> global t
>> t=timer('timerfcn',ritik,'startdelay',2)

3 个评论
显示 1更早的评论隐藏 1更早的评论

Shivank Anchal 2019-6-10

>> t=timer('timerfcn',@(x,y)disp(rand),'executionmode','fixedrate','period',1)
t = 
   Timer Object: timer-39
   Timer Settings
      ExecutionMode: fixedRate
             Period: 1
           BusyMode: drop
            Running: off
   Callbacks
           TimerFcn: @(x,y)disp(rand)
           ErrorFcn: ''
           StartFcn: ''
            StopFcn: ''
>> start(t)
    0.8147
    0.9058
    0.1270
    0.9134
    0.6324
    0.0975
    0.2785
>> stop(t)

Shivank Anchal 2019-6-10

This code print random numbers,after every one 1 second....NOW i want to print the whole numbers ,each printing one second after printing a number.you can run the above code to understand me.

请先登录，再进行评论。

Answer 3

Steven Lord 2019-6-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/466284-timer-function-is-not-executing-the-function-i-am-providing-please-help-me-with-this#answer_378543

在 MATLAB Online 中打开

t=timer('timerfcn',ritik,'startdelay',2)

This attempts to call the ritik function with 0 input arguments and 1 output argument and use the output argument from that call as the TimerFcn for the timer being created on this line. But your ritik function cannot return any output arguments, so MATLAB throws an error.

If you want MATLAB to call ritik as the TimerFcn for the timer specify it as a function handle.

t=timer('timerfcn',@ritik,'startdelay',2)

However, as stated in the "Creating Callback Functions" section on this documentation page, "When you create a callback function, the first two arguments must be a handle to the timer object and an event structure." Your ritik function does not accept any input arguments, and so does not satisfy the requirements imposed upon a TimerFcn by the timer object. You could use an anonymous function as an "adapter" (see the table in the "Specifying the Value of Callback Function Properties" on the documentation page I linked above) to bridge the gap between the signature the timer object expects its TimerFcn to have and the signature your ritik function actually has.

But looking more closely at your ritik function, I'm not sure what exactly you're trying to do with your timer. It won't have access to the global variable t (and I strongly recommend avoiding global variables!) and all it does is try to start and stop the timer repeatedly.

If you explain why you're trying to use a timer in this situation we may be able to help you achieve that goal.