MIO 6601 Counter, Perform Buffered Read and Simple Read

I have an application written in C++ where I would like to use the 6601 as the time base for all of the boards, so I would like to be able to query the current value of the counter. I also have a external signal that I want time tagged in the buffer. I have used example programs for the Simple Read and the Buffered read and they both work successfully individually.
If I try and combine them by setting up the counter with the following statement:
iStatus = GPCTR_Set_Application(iDevice, ND_COUNTER_3, ND_BUFFERED_EVENT_CNT);
and try to read the current value of the counter with:
iStatus = GPCTR_Watch (iDevice, ND_COUNTER_3, ND_COUNT, puiCurrentTime);
I always return a 0 for puiCurrentTime.
Can
I do both with a single counter? If not can I synchronize two counters one setup for the buffered read the other for the simple read.
Thanks

The second NIDAQ function call (GPCTR_Watch) will not work with Buffered Acquisition, because it is designed for simple read only. That might be the reason why puiCurrentTime always returns a zero.
Regarding the second issue, you can do both tasks with a single counter, by configuring it as buffered first, and completing the operation, and then configuring it as single, and completing also the operation. Nevertheless, there is no way to configure it as buffered and work with it as single reader, or viceversa. You must use two for performing an operation such as that. Thus, if you want to synchronize both of them, I would suggest you to read the following document which talks about it.
Well, I hope all of this info is helpful for you.
Aguila
Attachments:
Multicounter_Synchronization_App_Note.doc ‏55 KB

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MIO 6601 Counter, Perform Buffered Read and Simple Read

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