ALIAS - Revision history

Admin: Created page with "= Action = Indicates that the variable can be referenced with another name.
2013-02-06T22:42:25Z

Created page with "= <span class="f_Header">Action</span> = Indicates that the variable can be referenced with another name. <span style="font-family: Arial;"> </span> <span style="font-..."

New page
= <span class="f_Header">Action</span> =

Indicates that the variable can be referenced with another name.

<span style="font-family: Arial;"> </span>

<span style="font-family: Arial;"> </span>

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

newvar <span class="f_Syntax">ALIAS</span> oldvar

<span style="font-family: Arial;"> </span>

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= <span class="f_Header">Remarks</span> =
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{| width="604" cellspacing="0" cellpadding="1" border="1" style="border: 2px solid rgb(0, 0, 0); border-spacing: 0px; border-collapse: collapse;"
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oldvar

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Name of the variable such as PORTB.1

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newvar

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New name of the variable such as direction

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<span style="font-family: Arial;"> </span>

Aliasing port pins can give the pin names a more meaningful name.  For example, when your program uses 4 different pins to control 4 different relays, you could name them portb.1, portb.2, portb.3 and portb.4.

But it would be more convenient to refer to them as relais1, relais2, relais3 and realais4.

<span style="font-family: Arial;"> </span>

When you later on change your PCB and decide that relays 4 must be connected to portD.4 instead of portb.4, you only need to change the ALIAS line, and not your whole program.

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

[[CONST]]

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

<br/><source lang="bascomavr">
'-------------------------------------------------------------------------------
'copyright : (c) 1995-2005, MCS Electronics
'micro : Mega48
'suited for demo : yes
'commercial addon needed : no
'purpose : demonstrates ALIAS

'-------------------------------------------------------------------------------
$regfile = "m48def.dat"
$crystal = 4000000 ' 4 MHz crystal

Const On = 1
Const Off = 0

Config Portb = Output
Relais1 Alias Portb.1
Relais2 Alias Portb.2
Relais3 Alias Portd.5
Relais4 Alias Portd.2

Set Relais1
Relais2 = 0
Relais3 = On
Relais4 = Off

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

[[Category:BASCOM_Language_Reference]]