Hello,
> Seems ok, but not sure how you access those pins. How did you verified
> that your code does not work? You cannot be sure that these pins are
> available on the 51-pins.
I am using a MDA100 sensor board connected to my IRIS mote. I can see the
signals in OC3A, OC3B and OC3C using an oscilloscope. You can see the pines in
the 51-pin connector of the IRIS mote.
> > TCCR3A=0x57;
>
> COM3A = 1: toggle pin on compare match
> COM3B = 1: toggle pin on compare match
> COM3C = 2: clear pin on compare match
> WGM3:10 = 1
> > TCCR3B=0x19;
>
> ICNC3 = 0: input capture noise canceler disabled
> ICES1 = 0: input capture falling edge
> CS3 = 1: clock running with no prescaling
> WGM3:32 = 3, therefore WGM3 = 0xD: reserved.
This is not OK COM3C=1: toggle pin on compare match.
WGM3=0x0F; Fast PWM mode with OC3A as TOP value.
I think that the configuration is OK. Can I use this Fast PWM and to use the
tree output compares?
Or do I need to use the CTC mode?
> By the way, the Atmega1281 has timer 4 and 5 as well! If possible, I
> suggest you to use Timer/Counter 4 or 5, as no other code uses that
> (Timer3 was used instead of Timer1 on the MicaZ and Mica2 motes ,so
> there could be codes that uses that)
I did not know, but the problem is that I do not have these pines available in
the MDA sensor board (or in the IRIS connector).
Thank you very much.
Sofia
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