MPC5643L PWM capture problem

[zcc890406]

Hi sir,

      I am a new to use  the function of FlexPWM capture about  MPC5643L. In  the process of using, I had a promblem.

      I use the PIN of D3 (A[3]) as the input port to capture the signal，but every time signal capture faild. I have  already achieced capture  use the x[n]. who knows what is the difference between capture A/B[n]  and capture  x[n] .Thank you can  provide source code and some information.

Thank you  very much for you hlep.

[PetrS]

Hi,

The PWMA[n] and PWMB[n] are just an outputs. The input capture feature is not implemented on these pins. Also you do not have control registers for capture feature on PWMA[n] and PWMB[n]. Only the PWM[X] can be used for this feature and capture control registers are available for PWM[X] pin.

BR, Petr

[zcc890406]

Hi Petr Stancik，

First of all, thank you very much for your help. 

In the chip reference manual pin function table, I discover that  this pin has a capture function. The following is a screenshot of my list from the chip reference manual .

The chip reference manual shows that flexPWM_0 about A [3] has a capture function. Now I do not know how to do it.

thank you very much for your help.

Tomas