Re: [Discuss-gnuradio] GRC problems, saving data to files

[Adeel Anwar]

Baier,

For ur file-sink, what was the setting of "unbuffered" flag?
If unbuffered=off, file-sink will first buffer specified no. of items before writing them to file, so there is a chance that when FG is stopped some items at the end gets lost.

if unbuffered=on, file-sink will write items in file immediately but this is slightly inefficient (takes more CPU cycles)

-Adeel

 

On Tue, Jul 9, 2013 at 1:10 PM, Baier <address@hidden> wrote:

Dear all,

I generated random data with random source block and saved it to rhe file data_1k(File sink). After that I modulated the random data (ofdmmod block, fft size 256, occupied tones 100, cyclic prefix 128) and then demodulated them (ofdmdem block). Then I saved data to the file data_dem_1k (File sink block). But the first file data_1k has 4 kB, and the second file data_dem_1k 3,1 kB. I compared the files with the hex editor and realised the files are the same. Only the second files doesn't have the  last 10 percent of data at the end of file.
Is it a bug or I'm doing something wrong?
Thank you very much for the answers!


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