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How to read Swich value

 
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appiah212

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Joined: 11 Mar 2009
Posts: 23

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PostPosted: Wed Aug 12, 2009 3:38 pm    Post subject: How to read Swich value Reply with quote

Hi everyone

I need help on how to connect swicth to AVR MCU and read wheather the swicth is close or open. Thanks
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Evert :-)

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Joined: 18 Feb 2005
Posts: 2132

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PostPosted: Wed Aug 12, 2009 6:28 pm    Post subject: Reply with quote

Hi,

Check the help for DEBOUNCE, there's all you need to know.

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appiah212

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Joined: 11 Mar 2009
Posts: 23

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PostPosted: Tue Aug 18, 2009 9:41 pm    Post subject: Reply with quote

Please kindly show me a circuit diagram of how to connect a switch to AVR input pins. Thank you.
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Rick-S

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Joined: 08 Jan 2009
Posts: 50

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PostPosted: Wed Aug 19, 2009 1:20 am    Post subject: Reply with quote

Go to the main page of MCS Electronics and check out all the examples in the Application Notes section. There are many, many examples of sample programs with supporting schematic drawings. Many of which use switches. Most of the time a switch is simply placed between the pin of the port you plan to use and ground.

Rick
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kimmi

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Joined: 24 Feb 2006
Posts: 1922
Location: Denmark

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PostPosted: Wed Aug 19, 2009 1:24 am    Post subject: Reply with quote

See help search for : Newbie problems
Code:
Config Portb = Input
Portb.0 = 1                                                 'pullup we use button to gnd (=0)

Do
 If Pinb.0 = 0 Then
  'what you like to do ehen you push
 Waitms 200
 End If
Loop
End

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