topic Re: S32K344 CAN FD in S32K

S32K344 CAN FD

GuanHong — Mon, 14 Jul 2025 04:59:41 GMT

When I use PCAN-USB pro to recieve 64 bytes data from S32K344.

PCAN-USB pro only recieved the first 8 bytes, and the remaining 56 bytes are missing.

When I use PCAN-USB pro to transemit 64 bytes data to S32K344.

S32K344 recieve 64 bytes data successfully.

Re: S32K344 CAN FD

PetrS — Mon, 14 Jul 2025 09:35:08 GMT

Hi,

have you set the tx_info parameter properly to use CAN FD frame with desired payload size?

BR, Petr

Re: S32K344 CAN FD

GuanHong — Tue, 15 Jul 2025 08:29:58 GMT

I am using MCAL to build this project.
In the previous message, I attached my project.

Re: S32K344 CAN FD

PetrS — Wed, 16 Jul 2025 08:42:18 GMT

Hi,

I am not able to view/download project. So be sure you updated Can_PduInfo as per need.

BR, Petr

Re: S32K344 CAN FD

GuanHong — Wed, 16 Jul 2025 08:53:38 GMT

I upload file again.

Re: S32K344 CAN FD

PetrS — Wed, 16 Jul 2025 11:34:51 GMT

Hi,

try to remove Can_43_FLEXCAN_SetControllerMode calls after sending message. Not sure why you stop/start controller.

BR, Petr

Re: S32K344 CAN FD

GuanHong — Tue, 22 Jul 2025 08:06:19 GMT

Platform:S32DS3.5

SDK:PlatformSDK_S32K3_S32K344_M7-5.0.0
I connected channel 1 of the oscilloscope to the S32K344's CAN H, and channel 2 to the S32K344's CAN L, and obtained the following waveform.

I have already set the CAN payload to 64 bytes, but the DLC shown on the oscilloscope is still 8 instead of 64.

Can_43_FLEXCAN-CanConfigSet-CanControllerCan_43_FLEXCAN-CanConfigSet-TRANSMITCan_43_FLEXCAN-CanConfigSet-RECEIVE