BITS - Revision history

Admin: Created page with "= Action = Set all specified bits to 1. =
2013-02-07T11:30:10Z

Created page with "= <span class="f_Header">Action</span> = Set all specified bits to 1. <span style="font-family: Arial;"> </span> <span style="font-family: Arial;"> </span> = <sp..."

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Set all specified bits to 1.

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= <span class="f_Header">Syntax</span> =

Var = <span class="f_Syntax">Bits</span>( b1 [,bn])

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= <span class="f_Header">Remarks</span> =
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Var

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The BYTE/PORT variable that is assigned with the constant.

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B1 , bn

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A list of bit numbers that must be set to 1.

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While it is simple to assign a value to a byte, and there is special Boolean notation &B for assigning bits, the Bits() function makes it simple to assign a few bits.

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B = &B1000001 : how many zero’s are there?

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This would make it more readable : B = Bits(0, 6)

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You can read from the code that bit 0 and bit 6 are set to 1.

It does not save code space as the effect is the same.

It can only be used on bytes and port registers.

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Valid bits are in range from 0 to 7.

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= <span class="f_Header">See Also</span> =

[[NBITS]]

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= <span class="f_Header">Example</span> =

<br/><source lang="bascomavr">
'--------------------------------------------------------------------------------
'name : bits-nbits.bas
'copyright : (c) 1995-2005, MCS Electronics
'purpose : demo for Bits() AND Nbits()
'micro : Mega48
'suited for demo : yes
'commercial addon needed : no
'use in simulator : possible
'--------------------------------------------------------------------------------

$regfile = "m48def.dat" ' specify the used micro
$crystal = 4000000 ' used crystal frequency
$baud = 19200 ' use baud rate
$hwstack = 32 ' default use 32 for the hardware stack
$swstack = 10 ' default use 10 for the SW stack
$framesize = 40 ' default use 40 for the frame space

Dim B As Byte

'while you can use &B notation for setting bits, like B = &B1000_0111
'there is also an alternative by specifying the bits to set
B = Bits(0 , 1 , 2 , 7) 'set only bit 0,1,2 and 7
Print B

'and while bits() will set all bits specified to 1, there is also Nbits()
'the N is for NOT. Nbits(1,2) means, set all bits except 1 and 2
B = Nbits(7) 'do not set bit 7
Print B
End

</source><br/>{{Languages}}

[[Category:BASCOM Language Reference]]