© MCS Electronics, 1995-2007

FOURTHLINE

Action

Set LCD cursor to the start of the fourth line.

Syntax

FOURTHLINE

Remarks

Only valid for LCD displays with 4 lines.

See also

HOME , UPPERLINE , LOWERLINE , THIRDLINE, LOCATE

Example

FRAC

Action

Returns the fraction of a single.

Syntax

var = FRAC( single )

Remarks

The fraction is the right side after the decimal point of a single.

See Also

INT

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FREEFILE

Action

Returns a free Filenumber.

Syntax

bFileNumber = FREEFILE()

Remarks

bFileNumber A byte variable , which can be used for opening next file

This function gives you a free file number, which can be used for file – opening statements. In contrast to VB this file numbers start with 128 and goes up to 255. Use range 1 to 127 for user defined file numbers to avoid file number conflicts with the system numbers from FreeFile()

This function is implemented for compatility with VB.

See also

INITFILESYSTEM , OPEN , CLOSE, FLUSH , PRINT, LINE INPUT, LOC, LOF , EOF , FILEATTR , SEEK , BSAVE , BLOAD , KILL , DISKFREE , DISKSIZE , GET , PUT , FILEDATE , FILETIME ,

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© MCS Electronics, 1995-2007

FILEDATETIME , DIR , FILELEN , WRITE , INPUT

ASM

Partial Example

Ff =Freefile() ' get file handle

Open"test.txt" For Input As #ff ' we can use a constant for the file too Print Lof(#ff);" length of file"

Print Fileattr(#ff);" file mode" ' should be 1 for input Do

LineInput #ff , S ' read a line

' line input is used to read a line of text from a file Print S ' print on terminal emulator

Loop UntilEof(ff)<> 0

'The EOF() function returns a non-zero number when the end of the file is reached 'This way we know that there is no more data we can read

Close #ff

FUSING

Action

FUSING returns a formatted string of a single value.

Syntax

target = FUSING(source, "mask")

Remarks

When the single is zero, 0.0 will be returned, no matter how the mask is set up.

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© MCS Electronics, 1995-2007

See also

FORMAT , STR

Example

'-----------------------------------------------------------------------------

------------

Dim S As Single , Z As String * 10

'now assign a value to the single S = 123.45678

'when using str() you can convert a numeric value into a string Z = Str(s)

Print Z 'prints 123.456779477

Z = Fusing(s , "#.##")

'now use some formatting with 2 digits behind the decimal point with rounding Print Fusing(s , "#.##") 'prints 123.46

'now use some formatting with 2 digits behind the decimal point without

GET

Action

Reads a byte from the hardware or software UART.

Reads data from a file opened in BINARY mode.

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© MCS Electronics, 1995-2007

Syntax

GET #channel, var

GET #channel, var , [pos] [, length]

Remarks

GET in combination with the software/hardware UART reads one byte fromthe UART.

GET in combination with the AVR-DOS file system is very flexible and versatile. It works on files opened in BINARY mode and you can reads all data types.

By default you only need to provide the variable name. When the variable is a byte, 1 byte will be read. When the variable is a word or integer, 2 bytes will be read. When the variable is a long or single, 4 bytes will be read. When the variable is a string, the number of bytes that will be read is equal to the dimensioned size of the string. DIM S as string * 10 , would read 10 bytes.

Note that when you specify the length for a string, the maximum length is 254. The maximum length for a non-string array is 65535.

Partial Example:

GET #1 , var ,,2 ' read 2 bytes, start at current position GET #1, var , PS ' start at position stored in long PS

GET #1, var , PS, 2 ' start at position stored in long PS and read 2 bytes

See also

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

ASM

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© MCS Electronics, 1995-2007

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