I need help how to measure pwm pulse

[Jean_Paul_Talledo]

Hi everyone

I'm new with the ccs compiler, I want to interface a pic with a accelerometer chip which send as output a pwm signal . this signal change the pwm width depending of the sensor.

Also I want to transmit by rs-232 to a pc the digital signal.

please give me suggestions how to implement the pwm width measure and the transmitter by rs-232 without losing performance..

thanks
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Jean Paul Talledo Vilela
PACE Laboratory
Tec de Monterrey

[mvaraujo]

Jean,

I don't know if understood your question, but you can use CCP module to measure PWM signal. If you need to measure frequency, you can detect every rising edge, for example. If you need to measure width and period, you should detect rising edge as period start, change for falling edge to detect width, change for rising edge again to detect period end.

Let me know if this explanation makes sense to you.

Marcus