topic Re: How to use ld_receive_message() ? in S32K

How to use ld_receive_message() ?

pankajprasad100 — Fri, 04 Feb 2022 08:42:17 GMT

Hi,

I am working on a project where there are two ECUS master and slave.

I have implemented a code where I send the Lin-Diagnostics request 3C and the slave is responding by sending the positive response which can be seen on the LIN bus.

But while using the ld_receive_message() function, I am not getting the values which are seen on the LIN bus.

Re: How to use ld_receive_message() ?

namnguyenviet — Thu, 24 Feb 2022 11:20:10 GMT

Hello @pankajprasad100,

I would like to share with you an example project (Attach) about to use the ld_receive_message():

Hardware: S32K118
SDK release version: S32SDK_S32K1xx_RTM_3.0.0
PEx: S32 Design Studio v2.2

The Master node send a UDS frame with NAD = 0x02, PCI = 0x06, SID = 0x23, data = {0x03, 0x04, 0x05, 0x06, 0x07}

The Slave node use ld_receive_message() function to receive request message and then responded with PSID = 0x63 (Value = SID + 0x40).

Hope it helps.

Best Regards,

Nam

Re: How to use ld_receive_message() ?

pankajprasad100 — Mon, 28 Feb 2022 04:09:33 GMT

Hello @namnguyenviet

I have used the ld_receive_message() function and its working, but when I use to take the seed given by the slave the length buffer is updating but the data buffer is not updating. I can see the seed on the LIN bus but not in the buffer.

Is there anything i need to do to obtain the data?

MCU-S32K116

COMPILER-1AR

LIN ANALYZER-CANOe

Re: How to use ld_receive_message() ?

namnguyenviet — Mon, 28 Feb 2022 04:14:30 GMT

Hello,

Did you try out with the example I shared with you?

Best Regards,

Nam