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jeremywilson

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Joined: 11 Jul 2011
Posts: 79
Location: United States
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PostPosted: Sun Aug 18, 2013 11:16 pm    Post subject: flush Reply with quote
How many bytes can be written between flushes when writing data to the SD card? Can/will the buffer flush itself when it gets full?
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oe9vfj

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Joined: 17 Jun 2004
Posts: 269
Location: Austria, Hard
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PostPosted: Sat Oct 26, 2013 6:28 am    Post subject: Reply with quote
FLUSH do not need additional buffer.
AVR-DOS write the Data to the card, if the Data sector with 512 Bytes is full. IF you close the file, AVR-DOS writes the data sector to the card in all condition and update the Dirctory information for the file like size and date/time.

FLUSH only updates all information to the card like CLOSE, but do not really close the file, so you can go on to write data to the file.
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regards Josef

DOS - File System for BASCOM-AVR on http://members.aon.at/voegel
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