Hi,
Try this :
in moduleC :
module BlablaC {
uses interface Boot;
uses interface GeneralIO as DigitalInputPin;
// etc..
}
implementation {
event void Boot.booted()
{
DigitalIOPin.makeInput(); // DDRx &= ~(1 << x)
DigitalIOPin.set(); // PORTx |= (1 << x)
}
task void readInput() {
bool digitalInput = call DigitalIOPin.get();
}
// the rest of your program
// ....
}
in configurationAppC :
configuration BlablaAppC {
}
implementation {
components BlablaC,MainC;
BlablaC.Boot -> MainC;
components HplAtm128GeneralIOC as ATMega128Pin;
BlablaC.DigitalInputPin -> ATMega128Pin.PortA4;
}
I think it's quite portable, since you can replace the
HplAtm128GeneralIOC with the MSP's component
( sorry I don't know what's the counter part for the MSP).
Regards,
-daniel
-------- Original Message --------
> From: "Tom Apker" <[EMAIL PROTECTED]>
> Sent: Wednesday, July 25, 2007 6:38 AM
> To: [email protected]
> Subject: [Tinyos-help] Quadrature encoder
>
> Good day eveyone,
>
> I've just started working on a quadrature encoder program for a mica2
> mote, and I'm having some trouble figuring out how to access the individual
> external pins. It looks like I should be using the Get interface to get the
> value of (I think) Port A pins 4&5, which I will sample at a fairly high
> rate using one of the timers.
>
> Two questions:
>
> (1) How do I wire the external pins so that I can sample them with a Get
> (or similar) command? (example code would be helpful here)
>
> (2) Is it possible to make this more general than just the mica2, or
> even atm chips? I figure I won't be the last guy to do this, so I'd rather
> do it right the first time.
>
> Many thanks,
>
> -tba
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