How to Configure fifo bytes in s32k144 CAN UDS Bootloader

[y_rohit]

Hi,

Following code i took from "multi_cyc_fifo.h" file in S32K144 UDS CAN Bootloader.

"""

#define FIFO_NUM (3u)

#define TOTAL_FIFO_BYTES (500u+99u)

"""

My question is that , from where did the value (500u + 99u) come??

What is the calculation to find TOTAL_FIFO_BYTES??

Thanks

[nxf10035]

Hi，

     #define FIFO_NUM (3u)

     #define TOTAL_FIFO_BYTES (500u+99u)

    The FIFO_NUM is the max FIFO channels. The TOTAL_FIFO_BYTES is the total size for the FIFO. The size including max message data size + manage header data. It means that:

TOTAL_FIFO_BYTES = FIFO_NUM * (manage header data) + every FIFO channels max data length

Best Regards!