I am totally new to NIDAQ. I have searched this forum and not found a solution to my problem - everyone works with LabView, not in ANSI C. I use NIDAQmx with ANSI C on WinXP. It is easy to capture data using the ANSI C API provided with the NIDAQ. Data is automatically stored in a buffer, provided by the API. Question: How does one get the information out of the buffer? For instance, if one wanted to sample 1000 samples (let's, say, an analog input channel as well as a digital input channel). At the end of the data collection I wish to print the data that have been logged, e.g. to the stdout device. Just a tiny pointer in the right direction would be immensely helpful! None of the example C files (supplied with the NIDAQ) do file output of the data that have been logged. One needs to know the format in which data are stored in the buffer, as well as the structure of the buffer in order to access the elements of the buffer.

Multifunction DAQ

How does one write NI-DAQ data from buffer to stdout in ANSI C?

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Luke,

Thank you very much for this information and your time. I must say that National Instruments is totally exceptional in that they have staff like you who actually look at fora and answer problem questions, many of which are newby finger prolems. Almost every problem on this forum is covered by a professional staff member - that is impressive. Most other companies leave it to the users to solve the problems on their own. I appreciate your time. willemf