S32K中的主题 Re: S32K118 CAN RX MB MASK

S32K118 CAN RX MB MASK

Pohsuan — Mon, 05 May 2025 07:24:45 GMT

Hello NXP team,

I'm trying to configure the CAN RX message buffer global mask, based on the reference article in the link below.

https://community.nxp.com/t5/S32K-Knowledge-Base/S32K1xx-FlexCAN-Mask-Setting-Demo/ta-p/1519753

https://community.nxp.com/t5/S32K/S32K344-FlexCAN-How-to-setup-Rx-MB-mask-to-receive-the-CAN-FD/m-p/1523297

However, on my current CAN bus setup, I can only receive messages with IDs 0x300 and 0x400. I’m not able to receive IDs in the ranges 0x301 ~ 0x37F and 0x401 ~ 0x47F.

Am I missing any configuration?

Please check my project as attachment, and provide me some advice, Thank you!

Re: S32K118 CAN RX MB MASK

PetrS — Mon, 05 May 2025 08:59:10 GMT

Hi,

if receiving std ID you need to shift mask accordingly. The API does not do any shifting for mask register setup. So use

FlexCAN_Ip_SetRxMbGlobalMask(INST_FLEXCAN_0, 0x780<<18);

BR, Petr

Re: S32K118 CAN RX MB MASK

Pohsuan — Wed, 07 May 2025 02:15:22 GMT

Hello PetrS,

Thank you for your guidance. I was able to successfully receive the CAN messages.

When I using FlexCAN_Ip_SetRxMbGlobalMask, I needed to left-shift the mask value by 18 bits.
Is this behavior related to the version of the RTD library, or is it due to differences between the S32K118 and S32K344?

For reference, I’m currently using:
S32K1_RTD_2_0_0_P04_D2404_ASR_REL_4_7_REV_0000_20240417