S32K3 PWM measure

[kjy106906]

Hello. I have a question.

I want to measure odd number of data waveforms.

I hope to measure the waveform through the EMIOS ICU.
The values I set are as follows.
Measurement mode: ICU Mode Signal Measurement
Measurement property: ICU Duty Cycle

When the measurement is carried out, the duty and period in the red square box are measured.

(400 ticks, 600 ticks) (active time, period)
However, the last data is not measurable.

Is there any way to measure that data?
For example:

(400,400),(0,200), (300,300) 

Thank you

[PetrS]

Hi,

as far as I understand driver code, in this mode it does not return 3rd and 4th edge, active time duration (first 2 edgess) in tics is returned and a period is calculated from 2nd and 4th edge. You will probably need to select edge detect mode and read value for each edge.

BR, Petr

[kjy106906]

Thanks for the reply @PetrS 
Is it possible to measure duty and period even in edge detect mode?
(I think duty and period can only be measured in ICU_MODE_SIGNAL_MEASUREMENT.)
Is there a way to measure the duty and period of odd number of data as in the question above?

[PetrS]

Hi,

if having captured values for each edge you can calculate duty cycle/period yourself. 
ICU_MODE_SIGNAL_MEASUREMENT does not return values for bunch of 2 edges you outlined.

BR, Petr 

[kjy106906]

Thanks for the reply @PetrS 

sorry. I didn't understand
Please explain in more detail about "if having captured values for each edge you can calculate duty cycle/period yourself"

Best Regards

[PetrS]

Hi,

in edge mode, you should get a notification for each edge and you can read captured value of the timer and save it for later. Collecting all four edges you can calculate signal parameters.

BR, Petr