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BITWAIT - Revision history
2026-05-07T21:22:07Z
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Admin: Created page with "= <span class="f_Header">Action</span> = Wait until a bit is set or reset. <span style="font-family: Arial;"> </span> <span style="font-family: Arial;"> </span> ..."
2013-02-07T11:00:41Z
<p>Created page with "= <span class="f_Header">Action</span> = Wait until a bit is set or reset. <span style="font-family: Arial;"> </span> <span style="font-family: Arial;"> </span> ..."</p>
<p><b>New page</b></p><div>= <span class="f_Header">Action</span> =<br />
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Wait until a bit is set or reset.<br />
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= <span class="f_Header">Syntax</span> =<br />
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<span class="f_Syntax">BITWAIT</span>&nbsp;x , SET/RESET<br />
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= <span class="f_Header">Remarks</span> =<br />
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Bit variable or internal register like PORTB.x , where x ranges from 0-7.<br />
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<span style="font-family: Arial;">&nbsp;</span><br />
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When using bit variables make sure that they are set/reset by software otherwise your program will stay in a loop.<br />
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When you use internal registers that can be set/reset by hardware such as PINB.0 this doesn't apply since this state can change as a result from for example a key press.<br />
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= <span class="f_Header">See also</span> =<br />
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NONE<br />
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= <span class="f_Header">ASM</span> =<br />
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Calls: NONE<br />
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Input: NONE<br />
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Output: NONE<br />
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Code&nbsp;: shown for address 0-31<br />
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label1:<br />
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Sbic PINB.0,label2<br />
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Rjmp label1<br />
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Label2:<br />
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= <span class="f_Header">Example</span> =<br />
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<br/><source lang="bascomavr"><br />
$regfile = "m48def.dat" ' specify the used micro<br />
$crystal = 8000000 ' used crystal frequency<br />
$baud = 19200 ' use baud rate<br />
$hwstack = 32 ' default use 32 for the hardware stack<br />
$swstack = 10 ' default use 10 for the SW stack<br />
$framesize = 40 ' default use 40 for the frame space<br />
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Config Com1 = Dummy , Synchrone = 0 , Parity = None , Stopbits = 1 , Databits = 8 , Clockpol = 0<br />
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Dim A As Bit<br />
Bitwait A , Set 'wait until bit a is set<br />
'the code above will loop forever since the bit 'A' is not set in software<br />
'it could be set in an ISR routine<br />
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Bitwait Pinb.7 , Reset 'wait until bit 7 of Port B is 0.<br />
End<br />
</source><br/>{{Languages}}<br />
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[[Category:BASCOM Language Reference]]</div>
Admin