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Discussion Groups | Freescale DSPs | Use Button at ADC???

Technical discussions about Freescale (Motorola) DSPs (including the DSP56000, DSP56300, DSP56600, 56800 DSPs).

  

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Use Button at ADC??? - wpethe - Jan 16 17:36:00 2002

Hi,

has anybody ever used the ADC to drive a button?

Now we are going to use 4 ADC ports to connect them with buttons.
Has anybody got an Example?

Thanks

w. Pethe

PS: Then I can use some GPIO Pins for output.






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RE: Use Button at ADC??? - Haile, David - Jan 16 19:43:00 2002

Why not? Use a pullup resistor and ground with a button press. That should
be easy to do.

-----Original Message-----
From: wpethe [mailto:]
Sent: Wednesday, January 16, 2002 10:36 AM
To:
Subject: [motoroladsp] Use Button at ADC??? Hi,

has anybody ever used the ADC to drive a button?

Now we are going to use 4 ADC ports to connect them with buttons.
Has anybody got an Example?

Thanks

w. Pethe

PS: Then I can use some GPIO Pins for output.
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Re: Use Button at ADC??? - MW Ron - Jan 16 19:59:00 2002

> has anybody ever used the ADC to drive a button?
>
> Now we are going to use 4 ADC ports to connect them with buttons.
> Has anybody got an Example?

You might try looking at the FAQ's regarding the DSP56800's ADC unit for
ideas.  Simply goto:

http://e-www.motorola.com/cgi-bin/faq.cgi

Simply select DSP56800 under the 16-bit path DSP's and then do a search for
the category "A/D Converter Module".  The FAQ's contain several examples of
using the ADC in its different modes.

That might help,

Ron
--
TOP PICK HandHeld Computing - issue 4.5
"The best overall development tool for the Palm OS"

Metrowerks, maker of CodeWarrior - "Software Starts Here"
Ron Liechty - - http://www.metrowerks.com





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