S32KのトピックNeed help to set Rx FIFO configuration for CAN instance 1 and instance 2 for S32K3xx

Need help to set Rx FIFO configuration for CAN instance 1 and instance 2 for S32K3xx

marotib — Mon, 06 Nov 2023 08:50:21 GMT

Currently in my project : CAN Instance 0 is used for DAQ in normal mode ,CAN Instance 1 is used for PTCAN in normal mode and CAN instance 2 is used for PTCAN in listen only mode.

Now we are able to set CAN HW filters on CAN_0 and everything working as expected but we are unable to set CAN HW filters on instance CAN_1 and CAN_2.

In configuration tool --> enhanced rxfifo configuration option is disable for both the instance 1 & 2 and If I try to do the same through software then init getting fail.

So please let me know the way to set enhanced rxfifo.

Re: Need help to set Rx FIFO configuration for CAN instance 1 and instance 2 for S32K3xx

PetrS — Mon, 06 Nov 2023 11:39:47 GMT

Hi,

you did not specify a device, but most probably an Enhanced RXFIFO is not available for used instances.
Refer to chapter 74.1 Chip-specific FlexCAN information of the device RM for implementation.

BR, Petr

Re: Need help to set Rx FIFO configuration for CAN instance 1 and instance 2 for S32K3xx

marotib — Mon, 06 Nov 2023 12:15:01 GMT

Hello BR, Petr ,

If possible can you suggest solution to achieve below requirement

>configure HW filters with CAN-FD.

I m using S32K344

Re: Need help to set Rx FIFO configuration for CAN instance 1 and instance 2 for S32K3xx

PetrS — Mon, 06 Nov 2023 12:24:16 GMT

Hi,

for enhanced RXFIFO example you can refer to https://community.nxp.com/t5/S32K-Knowledge-Base/Example-S32K344-FlexCAN-Ip-TX-RX-EnhanceRXFIFO-test-S32DS3-4/ta-p/1536225

BR, Petr