S32KのトピックPWM duty cycle varies in free run mode of micro controller

PWM duty cycle varies in free run mode of micro controller

nitinverma — Tue, 08 Nov 2016 13:08:04 GMT

Dear Support Team,

I am working on s32k144(kinetis) eval board.I configure PWM for 50 % duty cycle when i connect debugger and run the code it is not showing 50 % duty cycle on MSO but when i stop the code or execution stopped @break points it shows the 50% duty cycle.When i remove the debugger and run in free execution mode then also duty cycle is not 50%. Kindly help me to resolve the issue.

Thanks

Nitin verma

Re: PWM duty cycle varies in free run mode of micro controller

PetrS — Wed, 09 Nov 2016 11:09:09 GMT

Hi Nitin,

can you share the code you have so we can check it on the board?

BR, Petr

Re: PWM duty cycle varies in free run mode of micro controller

nitinverma — Mon, 14 Nov 2016 09:20:02 GMT

Hi petr,

AlwaysThanks for you prompt reply.

That issue has been resolved.I was configuring FTM every time in scheduler tick so whenever CPU executing the code it configure FTM @ every tick and take significant time to configure hence the duty cycle affects.