Hello,
There is a 'application Report' form Texes instruments.
Generation and recognition of DTMF Signals with the MSP430"
SLAAE16
Robert Bon
Chris Howard wrote:
> I'm just getting started in the micro controller world.
>
> I now have my msp430-gcc and msp430-gdb working. I can
> run the little led-flashing programs great.
>
> What I want to build is a little card that will
> output three different sub-audible tones, 100hz,
> 123hz, and another similar one. I would like three
> pins as input to select which tone to output,
> then have the appropriate tone appear on the single
> output pin. I'll be putting this into an older kenwood vhf
> 2meter ham radio. So I am trying to match the configuration
> already indicated by the radio's wiring diagram.
>
> I have seen some examples of PIC programming for doing
> telephone DTMF touch tones. I don't need to be that fancy.
> These are only single tones, and much lower frequencies.
>
> I think maybe I want to use timerA to generate my tones?
>
> I'm looking for any advice on example code I can use,
> or general direction I should follow.
>
> Thanks all.
>
> --
> Chris Howard YipYap.Com
> ch...@yipyap.com Estes Park, Colorado USA
> current Estes Park weather -- http://www.yipyap.com/wscurrent.html
>
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