Questions Regarding RTD Version and FLEXCAN_RXFIFO Index Behavior

Manjunath2025 — Thu, 10 Apr 2025 11:47:10 GMT

Hello NXP Community,

We are currently using the following RTD version in our existing project:

NXP RTD AUTOSAR 4.7
Build version: S32K1_RTD_2_0_0_D2308_ASR_REL_4_7_REV_0000_20230804

We have encountered a few questions related to the RTD implementation and would appreciate your insights:

As shown in the image below, we noticed that the "FLEXCAN_IP_MB_HANDLE_RXFIFO" index is always 0 for Rx FIFO management. Based on our analysis, data seems to be consistently written to the 0th index. Could you confirm if our understanding is correct?
If our understanding is correct, could you clarify how the buffer management works in this case, given that the FIFO only appears to reference the 0th index? We are experiencing an issue where data is being overwritten, as shown in the image below.

If possible, we would appreciate it if you could share your email address so we can provide additional data and logs for further investigation. We are unable to share the log files here due to confidentiality concerns.

S32K中的主题 Questions Regarding RTD Version and FLEXCAN_RXFIFO Index Behavior

Questions Regarding RTD Version and FLEXCAN_RXFIFO Index Behavior