topic Re: KEAZ128 MSCAN_Deinit failed in Other NXP Products

KEAZ128 MSCAN_Deinit failed

alai1 — Tue, 22 Aug 2023 07:09:19 GMT

Hi,

The mscan module initial by setting CANE bit of register CANCTL1 to 1, after that, if I try to deinit the mscan with setting CANE to 0, but fail. I try SDK function or act as datasheet said by setting mscan to initial mode, the two way can't set CANE to 0, I debugging by keil S32DS IDE. The only way that can set CANE bit to 0 is reset mcu. My question is that my operation is wrong or not? How can I set the CANE bit to 0 while it already is 1?

Re: KEAZ128 MSCAN_Deinit failed

Robin_Shen — Tue, 22 Aug 2023 15:33:43 GMT

The CANE bit can only be written once.

How about disable the clock of CAN module? SIM_SCGC &=~(uint32_t)(SIM_SCGC_MSCAN_MASK); //disable clock

Can power consumption be reduced?

Best Regards,
Robin

Re: KEAZ128 MSCAN_Deinit failed

alai1 — Wed, 23 Aug 2023 03:03:01 GMT

My point is disable can module then release the TX and RX pin. After that set the RX pin as kbi pin and use the kbi interrupt to wake up the mcu. The point you said disable clock of can module I already try, but the RX pin interrupt can't wake up can module.