S功能的等待时间 [英] Waiting time in S-function

问题描述

我正在尝试使用S函数(C语言)在Simulink中创建一个闪烁过程，我需要发送一些帧，并且连续两个帧之间的时间应该为200毫秒.如何执行此等待时间?有实施的可能性吗?

I am trying to create a flashing procedure in Simulink using a S-function (C language) and I need to send some frames and the time between 2 consecutive frames should be lets say 200 milisconds. How can I implement this waiting time? Is there any possibility of implementing it?

推荐答案

在下面，您可以找到我在函数中遵循的步骤:

Below you can find the steps that I followed in the function:

1.create first frame
2.send first frame
3.save the time when I send first frame
4.if(current_time - time_send_FF == x ms)
    5. calculate nr of consecutive frame
    6. for each consecutive frame
        7. create consecutive frame
        8. send consecutive frame
        9. save the time when I send consecutive frame 
        10. if(current_time - time_send_CF == x ms)
            11. jump to step 6
        else 
            12. check again if(current_time - time_send_CF == x ms)
   else
        13.check again  if(current_time - time_send_FF == x ms)

问题是我无法存储发送第一帧/连续帧的时间，因为即使我使用全局DWOrk/RWork数组，它也会不断递增，并且当我尝试在current_time和time_send_FF之间进行求和时，结果会有所不同始终为0. 我可以使用时钟块作为输入来访问系统时间.我应该尝试其他什么方法... 谢谢！

The problem is that I can't store the time when I send first/consecutive frame because even if I use a global DWOrk/RWork array it is continuously incrementing and when I try to do the difference between current_time and time_send_FF the result is always 0. I have access to the system time using a clock block as input. What other approach should I try... Thanks!

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