SOUND - Revision history

Admin: Created page with "= Action = Sends pulses to a port pin. =
2013-02-12T17:19:31Z

Created page with "= <span class="f_Header">Action</span> = Sends pulses to a port pin. <span style="font-family: Arial;"> </span> <span style="font-family: Arial;"> </span> = <spa..."

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Sends pulses to a port pin.

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

<span class="f_Syntax">SOUND</span> pin, duration, pulses

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

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Any I/O pin such as PORTB.0 etc.

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Duration

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The number of pulses to send. Byte, integer/word or constant.

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Pulses

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The time the pin is pulled low and high.

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This is the value for a loop counter.

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When you connect a speaker or a buzzer to a port pin (see hardware) , you can use the SOUND statement to generate some tones.

The port pin is switched high and low for pulses times.

This loop is executed duration times.

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The SOUND statement is not intended to generate accurate frequencies. Use a TIMER to do that.

 

[[File:Sound.png|center|Sound.png]]

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

NONE

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

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

$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 Pulses As Word , Periods As Word
Pulses = 65535 : Periods = 10000 'set variables
Speaker Alias Portb.1 'define port pin

Sound Speaker , Pulses , Periods 'make some noice
'note that pulses and periods must have a high value for high XTALS
'sound is only intended to make some noise!

'pulses range from 1-65535
'periods range from 1-65535
End
</source><br/>{{Languages}}

[[Category:BASCOM Language Reference]]