FLUSH

From MCS Wiki AVR
(Difference between revisions)
Jump to: navigation, search
(Created page with "= <span class="f_Header">Action</span> = Write current buffer of File to Card and updates Directory <span style="font-family: Arial;"> </span> <span style="font-family...")
 
 
(One intermediate revision by one user not shown)
Line 36: Line 36:
  
 
When no file number is specified, all open files will be flushed.
 
When no file number is specified, all open files will be flushed.
 +
 +
Flush does not need additional buffers. You could use FLUSH to be absolutely sure that data is written to the disk. For example in a data log application which is updated infrequently. A power failure could result in a problem when there would be data in the buffer.
  
 
<span style="font-family: Arial;">&nbsp;</span>
 
<span style="font-family: Arial;">&nbsp;</span>
Line 43: Line 45:
 
= <span class="f_Header">See also</span> =
 
= <span class="f_Header">See also</span> =
  
−
[http://avrhelp.mcselec.com/initfilesystem.htm INITFILESYSTEM]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/open.htm OPEN]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/close.htm CLOSE],&nbsp;[http://avrhelp.mcselec.com/print.htm PRINT],&nbsp;[http://avrhelp.mcselec.com/line_input.htm LINE INPUT],&nbsp;[http://avrhelp.mcselec.com/loc.htm LOC],&nbsp;[http://avrhelp.mcselec.com/lof.htm LOF]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/eof.htm EOF]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/freefile.htm FREEFILE]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/fileattr.htm FILEATTR]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/seek.htm SEEK]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/bsave.htm BSAVE]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/bload.htm BLOAD]&nbsp;,[http://avrhelp.mcselec.com/kill.htm KILL]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/diskfree.htm DISKFREE]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/disksize.htm DISKSIZE]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/get.htm GET]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/put.htm PUT]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/filedate.htm FILEDATE]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/filetime.htm FILETIME]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/filedatetime.htm FILEDATETIME]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/dir.htm DIR]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/filelen.htm FILELEN]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/write.htm WRITE]&nbsp;,&nbsp;[http://avrhelp.mcselec.com/input.htm INPUT]
+
[[INITFILESYSTEM]] , [[OPEN]] , [[CLOSE]], [[PRINT]], [[LINE INPUT]], [[LOC]], [[LOF]] , [[EOF]] , [[FREEFILE]] , [[FILEATTR]] , [[SEEK]] , [[BSAVE]] , [[BLOAD]] ,[[KILL]] , [[DISKFREE]] , [[DISKSIZE]] , [[GET]] , [[PUT]] , [[FILEDATE]] , [[FILETIME]] , [[FILEDATETIME]] , [[DIR]] , [[FILELEN]] , [[WRITE]] , [[INPUT]]
  
 
<span style="font-family: Arial;">&nbsp;</span>
 
<span style="font-family: Arial;">&nbsp;</span>

Latest revision as of 15:16, 4 February 2014

Contents

Action

Write current buffer of File to Card and updates Directory

 

 

Syntax

FLUSH #bFileNumber

FLUSH

 

 

Remarks

BFileNumber

Filenumber, which identifies an opened file such as #1 or #ff

 

This function writes all information of an open file, which is not saved yet to the Disk. Normally the Card is updated, if a file will be closed or changed to another sector.

 

When no file number is specified, all open files will be flushed.

Flush does not need additional buffers. You could use FLUSH to be absolutely sure that data is written to the disk. For example in a data log application which is updated infrequently. A power failure could result in a problem when there would be data in the buffer.

 

 

See also

INITFILESYSTEM , OPEN , CLOSE, PRINT, LINE INPUT, LOC, LOF , EOF , FREEFILE , FILEATTR , SEEK , BSAVE , BLOAD ,KILL , DISKFREE , DISKSIZE , GET , PUT , FILEDATE , FILETIME , FILEDATETIME , DIR , FILELEN , WRITE , INPUT

 

 

ASM

Calls

_FileFlush

_FilesAllFlush

Input

r24: filenumber

 

Output

r25: Errorcode

C-Flag: Set on Error

 

 

Partial Example 


$include "startup.inc"
 
'open the file in BINARY mode
Open "test.biN" For Binary As #2
Put #2 , B ' write a byte
Put #2 , W ' write a word
Put #2 , L ' write a long
Ltemp = Loc(#2) + 1 ' get the position of the next byte
Print Ltemp ;" LOC"' store the location of the file pointer
Print Lof(#2);" length of file"
Print Fileattr(#2);" file mode"' should be 32 for binary
Put #2 , Sn ' write a single
Put #2 , Stxt ' write a string
 
Flush #2 ' flush to disk
Close #2

Languages   English • Deutsch  
Retrieved from "http://wiki.mcselec.com/bavr/index.php?title=FLUSH&oldid=4686"
Personal tools
Namespaces
Variants
Actions
Navigation
In other languages
Language