topic CAN PAL S32K144EVB in S32 Design Studio

CAN PAL S32K144EVB

Coding_Torque-SDRS — Thu, 21 Mar 2024 13:01:56 GMT

Hello Community Members !

I'm presently working on CAN module in S32K144 EVB and looking for some support to send a dummy message through CAN0 module and sending it via PTE4 and PTE5 pins. And i'm using a CANanalyser to check for CAN messages. But I cant able to read it in Vector CAN box.

Do I've to change the clock configuration in CLOCK_SYS_Init or anything I've to change. My code has been attached for the reference. Please do let me know about any modification in it?

My Code:

#include "sdk_project_config.h"

#include <interrupt_manager.h>

#include <stdint.h>

#include <stdbool.h>

#include "peripherals_can_pal0.h"

#define MASTER

/*#define SLAVE*/

/* Definition of the TX and RX message buffers depending on the bus role */

#if defined(MASTER)

#define TX_MAILBOX (1UL)

#define TX_MSG_ID (1UL)

#define RX_MAILBOX (0UL)

#define RX_MSG_ID (2UL)

void BoardInit(void);

void BoardInit(void)

{

/* Initialize and configure clocks

* - Setup system clocks, dividers

* - Configure FlexCAN clock, GPIO

* - see clock manager component for more details

//CLOCK_DRV_Init(&clockMan1_InitConfig0);

//Clock configuration

CLOCK_SYS_Init(g_clockManConfigsArr, CLOCK_MANAGER_CONFIG_CNT, g_clockManCallbacksArr, CLOCK_MANAGER_CALLBACK_CNT);

CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_AGREEMENT);

/* Initialize pins

* - Init FlexCAN and GPIO pins

* - See PinSettings component for more info

PINS_DRV_Init(NUM_OF_CONFIGURED_PINS0, g_pin_mux_InitConfigArr0);

}

volatile int exit_code = 0;

int main(void)

{

/* Do the initializations required for this application */

BoardInit();

CAN_Init(&can_instance0, &can_config0);

can_buff_config_t buff_config0 = {

.enableFD = false,

.enableBRS = false,

.fdPadding = 0,

.idType = CAN_MSG_ID_STD,

.isRemote = false

};

CAN_ConfigTxBuff(&can_instance0, TX_MAILBOX, &buff_config0);

// Example dummy message

can_message_t dummyMessage;

dummyMessage.id = 0x123; // Example message ID

dummyMessage.length = 8; // Example data length

dummyMessage.data[0] = 0xAA; // Example data bytes

// Populate other data bytes as needed

// Call CAN_Send function to send the message

status_t sendStatus =

CAN_Send(&can_instance0, TX_MAILBOX, &dummyMessage);

if (sendStatus != STATUS_SUCCESS) {

//Handle send error

}

CAN_Deinit(&can_instance0);

while(1) {

CAN_Init(&can_instance0, &can_config0);

CAN_Send(&can_instance0, TX_MAILBOX, &dummyMessage);

}

for(;;) {

if(exit_code != 0) {

break;

}

return exit_code;

}

Re: CAN PAL S32K144EVB

Julián_AragónM — Fri, 22 Mar 2024 19:01:02 GMT

Hi @Coding_Torque-SDRS,

It seems you are using the example for CAN PAL S32K144, is this correct? Have you modified any of the configurations or code?

Do you have EVB board powered by external supply into J16? The SBC chip is powered by this external 12V source. Also, for CAN FD communication to work, another ECU with CAN termination must be connected for proper communication, with standard CAN, you can communicate only between ECU and Vector CAN Box.

Best regards,
Julián

Re: CAN PAL S32K144EVB

Coding_Torque-SDRS — Sat, 23 Mar 2024 15:47:56 GMT

@Julián_AragónM Thanks for the support it really helps. I'll try it out and let you update on the CAN.

Re: CAN PAL S32K144EVB

Coding_Torque-SDRS — Thu, 28 Mar 2024 08:01:51 GMT

@Julián_AragónM

Now I can able to transmit CAN message. Thanks for the support. If you think you can help me with this issue it'll be great - https://community.nxp.com/t5/S32-Design-Studio/CAN-PAL-Example-S32K144/m-p/1837077#M12090

Re: CAN PAL S32K144EVB

Coding_Torque-SDRS — Fri, 05 Apr 2024 06:03:31 GMT

@Julián_AragónM

I've identified a minor oversight on my part that was causing the issue. It turns out that not using the CAN termination resistor was the culprit.

Once I rectified this oversight by implementing the termination resistor, the CAN reception began functioning flawlessly. Thanks for the support.