It seems like you should be able to use the encoder as the clock source hooked up to a timer (counter mode). Each encoder count would increment the counter.
TOS does use one timer (msp430 has timerA & timer B) so you should be free to use the other for what you want. This also might be helpful (also I would read the msp430 users guide on timers): "MSP430 Timers In-Depth" http://focus.ti.com/lit/ml/slap113/slap113.pdf On Tue, Sep 15, 2009 at 5:50 AM, Jose Araujo <[email protected]> wrote: > Dear All, > > I want to read an encoder that is connected to a motor rotating at a maximum > speed of 4000RPM. I made the calculations and for a 4000RPM motor with a > 1024 CountsPerRevolution encoder resolution I would need 68KHz frequency to > be able to read the speed of the motor. > Assuming this is right and that I would have the external 32KHz oscillator > on my tmote sky, I would like to know if it would be possible to use the > internal 8MHz oscillator, or if I need to place a higher external frequency > oscillator. If I would place an external one, what would I need to change in > terms of software? > > Thank you for the help, > Jose Araujo > > > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
