S32K314：How to use ICU to detect PWM cycle and duty cycle?

[H_NXP]

After configuring ICU and MCL, every time I check the IP_EMIOS_1->CH.UC[3].B value in lcuSignalEdgeDetection, it remains 0. Moreover, there is a significant difference in the subtraction of A2-A1 before and after each time. For example, after collecting IP_EMIOS_1->CH.UC[3].A three times, A1, A2, and A3 were obtained, with A3-A2=1000 and A2-A1=50,In theory, there should not be much difference between A3-A2 and A2-A1. May I ask if there are any errors in my configuration or calculation?

[_Leo_]

Thank you for your interest in our products and for contributing to our community.

You could refer to IPWM example project of the following post:

https://community.nxp.com/t5/S32M-Knowledge-Base/S32M27x-S32K3-eMIOS-Usage/ta-p/2129760

I hope this information is helpful.

[H_NXP]

I referred to routine 【S32K311_RTD600_eMIOS_IPWM_Ip_example】, but I noticed that there is a significant difference in the data collected each time.The actual square wave frequency is 50Hz, with a duty cycle of 50%