S32K3 CANFD support 8Mbps Demo example code?

[CherryDeng]

Could you help share the 8Mbps CANFD Demo example code in S32K3? Thanks.

[PetrS]

Hi,

as far as I know there is no such example directly, but you can reuse any existed one, let say https://community.nxp.com/t5/S32K-Knowledge-Base/Example-S32K344-FlexCAN-Ip-TX-RX-EnhanceRXFIFO-test... and modify CAN bitrate accordingly using below tool:
https://community.nxp.com/t5/MPC5xxx-Knowledge-Base/MPC5xxx-S32Kxx-LPCxxxx-CAN-CAN-FD-bit-timing-cal...
However question could be, do you have CAN transceiver which is capable to run on such rates? What is a board you have?

BR, Petr

[CherryDeng]

Petr,

We use S32K358+ TJA1462 CANFD.

[PetrS]

Hi

ok, do not have such combination, but I modified my old demo for MRCANHUB344, which have TJA1463. So I added test code for FlexCAN2 using 1M/8M bitrate and it is working well with PCAN USB Pro FD connected.

You can refer to that code.

BR, Petr

[CherryDeng]

Petr：

Another question, how many S32K3 CANFD frames can be sent and received per second by PCAN View?

[PetrS]

Hi,

this is my measurement on CAN TX line, I see expected signal

Single pulse in data phase is 125ns, that corresponds to 8Mbps rate.
If you see timing issues, check CAN PE clock and CAN bit timing setting.

How many S32K3 CANFD frames can be sent and received per second by PCAN View?
An answer requires to have more inputs, bitrates for both nominal/data phases, payload.
You can see above a message with 1M/8M and 64byte payload take about 110us.

BR, Petr

[CherryDeng]

Petr,

Thanks for your demo, we test the CANFD data bit waveform, but it is not 8Mbps, it is 3.205Mbps. Could you help check it?