MPC5xxxのトピックRe: Timer configuration in MPC5744P

Timer configuration in MPC5744P

Jeevan_Kumar — Tue, 03 Nov 2020 07:14:08 GMT

Screenshot 2020-11-03 122856.png

I want measure the execution time of a one function. For that I configure timer for 1ms at that time I get 1ms. I need more accuracy for that I configure timer for 1us at that time I am getting 447us. why I am getting like that. wither my us configuration is wrong.

Re: Timer configuration in MPC5744P

petervlna — Tue, 03 Nov 2020 12:21:39 GMT

Hello,

What is your clock of PIT, 40MHz?

Could you share with me stetting of PIT?

When you perform simple pin toggle in ISR on every PIT expire, do you see the delay?

Have a look at example code:

https://community.nxp.com/t5/MPC5xxx-Knowledge-Base/Example-MPC5744P-PIT-triggering-interrupts/ta-p/1102928

Best regards,

Peter

Re: Timer configuration in MPC5744P

Jeevan_Kumar — Tue, 03 Nov 2020 12:23:59 GMT

No 160MHz