Timer rising edge

mosine · ‎2013-07-30

Posted on July 31, 2013 at 08:33

Hi,

I'm working with stm32f2. I need example code, to count time between two rising edge of GPIO.

I read somewhere, that is possibile by appropriate timer's configuration without GPIO's interrupt. Can you help me?

Thanks

#pwm-input

Tesla DeLorean · ‎2013-07-31

Posted on July 31, 2013 at 14:37

You'd use a TIM with CHx in ''input capture'' mode, have it interrupt on CCx and compute the delta of values latched in CCRx between one event and the next.

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Tomas DRESLER · ‎2013-07-31

Posted on July 31, 2013 at 17:57

Or, try PWM Input mode, this way you get a 0-based delta.

Examples are in the FW library.

Edison