Serial Data Logging to new .txt file after every 30mins

[awaisfarooqi]

Hi,

I have written a program that serial reads from arduino the Dallas DS18B20 two sensors data as well as the stepper motor position data. I ran my setup for 24 hours but end up having a 70GB .txt file which I cannot open easily. What i ask help here that if possible someone can help me with how can I generate a new .txt file after every 30mins. So my log files are still able to open easily by any test editor. 

Please find my .VI attached. 

Thanks.

[crossrulz]

The simple way is to use the Elapsed Time express VI in the Timing palette.  When the time has passed, close your current file and create a new one.  If you dig into the File IO->Advanced File Functions, you will find a VI in there called Create File With Incrementing Suffix.  That will help keep unique file names.

[awaisfarooqi]

thank for the reply.

I able to get new files but they are empty , i want my serial data captured it to be in it as well. is there any example to use this feature. Thanks. 

[crossrulz]

Are you storing your file reference in a shift register?

[Mark_Yedinak]

First question, do you need to save that much data? Second thought would be if you do, you should be using a database and not files.

If you must use files that you need to open/close/create your file within your loop. In your current code you are opening the file outside your loop so you end up with  a single file. I would recommend that you look at using a state machine or a producer/consumer pattern for your application.

[awaisfarooqi]

Hi,

No I guess, I am not familiar with this technique. please find in attachment the .VI i did, its incomplete coz i am not getting any idea how to use it in line with my codes. It runs but goes to False.