[PIC] How to read pwm signal output

1. i am getting pwm output of one microcontroller like 25% 50% 75% signals
2. i want to given that signal into other pic microcontroller AS:| input and read that pwm signals on Digital IO or PWM
(Read tat Waveforms as 25 % 50% 75%) and i want to store that PWM SIGNALS in internAL eeprom

Hi

for relatively low frequency you could use the capture function.

It is very precise.

There is a counter. running with selectable clock freqency.
The capture function just freezes the counter value at the selected edge of the input signal (PWM)

Read at least three edges:
* rising1
* falling
* rising2

* calculate "rising2 - rising1" to get the period_time of the PWM signal
* calculate "falling - rising1" to get the high_time of the PWM signal
* calculate "high_time / period_time" to get the duty_cycle

(You don´t need to restart the counter. Nor you need to take care about overflow, as long as "PWM_period_time < counter_overflow_time)

The error should be +/- 1 counter tick.

The resolution depends on PWM frequency and counter_clock_frequency

Klaus

I get the feeling that this is an example of the "XY Problem" (https://xyproblem.info/).
What are you trying to do that you think measuring the PWM duty cycle is the solution?
Susan