Sensing the High and Low state in PWM

[muskut]

Hi Friends,

I have got a question about the PWM mode. When we use the HPWM command, Is it possible the sensing the High and Low time in the CCP pin? with control a register's bit? I need the sense pwm's High and Low states.

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[Tim]

From what I know its not possible. At least I never found out.

[muskut]

I have got the same idea Thanks Tim

[hadv215]

Why not connect it to a different pin and set that one as input?
Or use Timerx that is used for the PWM?

[muskut]

I don't have any free pins to read

I wonder is it possible or not to sense the states of the pwm, with reading the registers

[hadv215]

Real 'sensing' of course requires a sensor, which could be an input. But since you don't have any pins left that becomes a little difficult.
As I said before, you can use the timer register that is associated with the PWM module.

[fanie]

It may be possible to share an output pin as an input.

Ie if you drive a relay you can make several readings before the relay knows it's power was off. It will depend on the 'type' of output though.