Pause task

Hello?

I wish to suspend the task to HAVE to change the setting of the sampling, when my customer wants. I used a Boolean value to stop the display of the data acquired on the screen, but in fact it retains the acquisition data while its value is changed by the user. Then just as he tries to apply the new setting, shows me an error message "task is reserved.

How can I stop the task?

Hi, Anarkie.

Unfortunately, there is no way to interrupt a task and then change the sampling frequency.  In order to change the sampling frequency after the sample clock has been set up, you must stop the task, configure a new task and then run the task.  Screenshots (excerpts attached code) show how to do this.

The first screenshot shows the event that occurs when the rate is changed by the user.  When the control of 'rate' has a change in the value, the task is stopped, the sample clock is reconfigured to this new rhythm, and the new task is started.

The second screenshot shows the event that occurs when the rate is unchanged.  If there is no change in the control of the frequency not later than 10ms, data are acquired (as expected) of the previous configuration.

Let me know if you need help most.  I hope that you are having a great day!

Tags: NI Software

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