S32KのトピックRe: Problem with CAN s32k344 - JA1043

Problem with CAN s32k344 - JA1043

Miki849 — Mon, 13 Dec 2021 14:32:38 GMT

Good evening!

I have two question about can communication.

First:

I have a one evaluation board with s32k344 and the transceiver chip for can is JA1043.

I understand that the transceiver working similar to TJA1153 , so i will need activate the pins for can if i want that the example work, is it correct ?

My second question is :

I activate the pins with RTD but the IDE told me that It couldnt find the Siul2_Port_Ip_Defines.h file.

Do i something wrong with the RTD ? Maybe i need activate another option that i dont see ?

Thank you in advance.

Re: Problem with CAN s32k344 - JA1043

Senlent — Tue, 14 Dec 2021 03:21:31 GMT

Hi@Miki849

Q1.yes, you need to activate the pins for CAN transceiver(JTA1043).

please refer to JAT1043.fm for details.seems that you need to set STB_N & EN pins to high.

Q2. Have you added Siul2_Port to your Components?

BR!

Jim,

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Re: Problem with CAN s32k344 - JA1043

Miki849 — Thu, 16 Dec 2021 10:12:06 GMT

Thank you for you answer.

Where i could find the JAT1043.fm ?

on the other hand :

I activated this pins but I continue without send or received anything.

I checked with the oscilloscope and the micro send data by tx pin , but the can signal never change..

I attach my code, if you could give me some clue.

Thank you very much in advance.

Re: Problem with CAN s32k344 - JA1043

Senlent — Fri, 17 Dec 2021 02:22:56 GMT

Hi@Miki849

you can find TJA1043 datasheet on this link.

https://www.nxp.com/products/interfaces/can-transceivers/can-with-flexible-data-rate/high-speed-can-transceiver-with-standby-and-sleep-mode:TJA1043

also,I checked your example code,some configurations should be changed.

First.wrong PE clock setting.

and keep sending messages in while-loop

then test PAT6 & PTA7 waves.

BR!

Jim,

Re: Problem with CAN s32k344 - JA1043

Miki849 — Fri, 17 Dec 2021 09:19:47 GMT

Thank you very much Jim.

Sadly, i find another problem. I changed the clocks and i tested the two can, but I received the same data in tx and rx. and never send it by can . I imagine that it is the behavior for loopback mode , but in my case i configure with RTD the normal mode so it is strange.

I am using a peak usb with this parameters:

8MHz and 500kbit/s

Do you have any idea?

The code is the same but i added your changes.

Kind regards .

Miguel

Re: Problem with CAN s32k344 - JA1043

Senlent — Fri, 17 Dec 2021 10:09:11 GMT

Hi@Mike849

It seems you did not configure TJA1043 properly

BR!

Jim，

Re: Problem with CAN s32k344 - JA1043

Miki849 — Fri, 17 Dec 2021 10:54:41 GMT

Hi Jim.

I discovered the problem, the JA1153 do a tx-rxd shortcircuit, if the transceiver detect a error.

I thought that the configuration for the transceiver JA1043 and JA1153 was the same, because i have the both eval board model : S32K3X4EVBQ257ND and S32K3X4EVB-Q257 . I thought that the unique difference between the boards was the debugger part.

Then , i resolved the problem with JA1043 , the code is working, I need to try more with the library for can.

So thank you very much !

But , if i want configure the JA1153 , where can i find the information for configure this transceiver ?

I try to look for in the google and the nxp website , but i found nothing.

Thank you very much for your help !

Re: Problem with CAN s32k344 - JA1043

Senlent — Mon, 20 Dec 2021 01:33:37 GMT

Hi@Miki849

Happy to see the problem was solved,

Regarding the TJA1153 informations,it seems that you must sign the NDA ,and I have no right to provide these documents.

https://www.nxp.com/products/interfaces/can-transceivers/secure-can-transceivers/secure-hs-can-transceiver-with-sleep-mode:TJA1153?fpsp=1&tab=Documentation_Tab

BR!

Jim,