topic CMU flag in MPC5xxx

CMU flag

mehmetkaradag — Wed, 24 May 2023 15:33:10 GMT

Hi NXP engineers,

I'm using mpc5777c.

jumping to FCCU ISR when SDADC clock is damaged. Interrupt source is CMU. But I cannot clear the FHHI flag. That's why i'm receiveing interrupt continously.

below code is in FCCU interrupt.

what could be the error?

thanks for helps.

Re: CMU flag

petervlna — Thu, 25 May 2023 04:44:32 GMT

Hello,

Well,not sure what is your issue but I see 2 scenarios:

1. you are not writing 1 to clear the flag. w1c = write 1 to clear

2. your clock is not correct and as soon as you clear CMU flag, it is set back immediately.

Best regards,

Peter