S32K1xx LIN Stack

Francesco_Solito · ‎05-03-2023

Good morning

I tried to setup the lin_slave_s32k118 stack example on my evaluation board and I see the LIN traffic correctly.

What I'm not able to do is:

1) get a slave response to a diagnostic service like 0xB2 (that is included into the example); please note that NAD, PID and FID are ok;

2) change the LDF reference file to a different folder than the SDK installation folder (I would like to use my project folder)

Could you please help me in particular on point 1?

Thank you and kind regards,

Francesco

nxf78987 · ‎05-17-2023

Hi @Francesco_Solito,

1) get a slave response to a diagnostic service like 0xB2 (that is included into the example); please note that NAD, PID and FID are ok;

=> As far as know, you can use the ld_receive_message() to receive one diagnostic message and store it in the buffer pointed to by user data.

Please refer to chapter 7.4.4.2 of LIN_Specification_2.2A.pdf for more detail.

2) change the LDF reference file to a different folder than the SDK installation folder (I would like to use my project folder)

=> Please share with me the software version that you are using. I will recheck this problem on my side.

Best regards,

Dan

Francesco_Solito · ‎05-17-2023

Hello and thank you for your reply.

As regards my point 1: I solved it simply calling ld_init(LI0) before l_ifc_init(LI0). ld_init(LI0) was not present in the main.c of the example project "lin_slave_s32k118".

What I found now is that initial_NAD seems to be used only in 0xB0 service, while for all the other services configured_NAD is used. So, with a CANoe simulation, if I don't perform 0xB0 service at the beginning (in order to switch from initial_NAD to configured_ND), I'm not able to access diagnostic service (because CANoe uses initial_NAD while the lin stack uses configured_NAD). If I use 0xB0 at the beginning everything works correctly then. Is that correct considering the LIN specifications?

As regards my point 2: I'm using

S32DS for S32 Platform v3.5 Build id: 230226 (Update 2)

S32SDK_S32K1XX_RTM_4.0.1

Thank you in advance and kind regards,

Francesco

nxf78987 · ‎05-23-2023

Hi @Francesco_Solito,

What I found now is that initial_NAD seems to be used only in 0xB0 service, while for all the other services configured_NAD is used. So, with a CANoe simulation, if I don't perform 0xB0 service at the beginning (in order to switch from initial_NAD to configured_ND), I'm not able to access diagnostic service (because CANoe uses initial_NAD while the lin stack uses configured_NAD). If I use 0xB0 at the beginning everything works correctly then. Is that correct considering the LIN specifications?

=> You are right. As far as I know, the initial_NAD is only used in 0xB0 service and configured_NAD is used for other services.

You can refer to chapter 4.2.5 of LIN_Specification_2.2A.pdf for more detail.

As regards my point 2: I'm using S32DS for S32 Platform v3.5 Build id: 230226 (Update 2)

S32SDK_S32K1XX_RTM_4.0.1

=> The feature as you would expect is not supported in this version of the software. However, this feature has been supported in S32SDK_S32K1XX_RTM_4.0.2. So please update your software version if you need to use this feature.

Best regards,

Dan