2011/3/16 Klemen Dovrtel <klemen_dovr...@yahoo.com>: > Hello everybody, > > I would like to measure some analog signals using emc (for PID control). I > think the easiest way would be to measure the pwm signal. > > Is there a hal module/component which could i use or can assemble one from > existing hal modules/components? > > I was thinking i could use two oneshot functions, one to trigger on rising > edge and one to trigger on falling edge. What i need is a function to measure > the time between those two events - is there a hal function for that?
I am not sure, if I understand correctly, what is the goal You want to achieve and what signals do You want to measure, but I think that You can: 1) use voltage-to-frequency converter chip like this: http://www.national.com/mpf/LM/LM231.html#Overview or use already assembled Mesa's THCAD board Both if them take 0-10V on input and outputs frequency signal 2) use encoder module in HAL to treat the frequency signal and provide an input to PID loop. Viesturs ------------------------------------------------------------------------------ Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
