S32 Design StudioのトピックRe: The loopback test of S32K142 using CAN PAL peripheral failed

The loopback test of S32K142 using CAN PAL peripheral failed

RyzeBai — Tue, 18 Apr 2023 04:27:42 GMT

Hi,

Recently, I came into contact with S32K platform. The loopback test using CAN_PAL peripheral failed. It has been several days.Please give me a suggestion.The code is simple, as follows:

In DEBUG, the program gets stuck in "while(CAN_GetTransferStatus(&can_pal1_instance, RX_MAILBOX) == STATUS_BUSY);

CAN_PALPIN_MUX

#include "Cpu.h" #include "callbacks.h" #define TX_MAILBOX (1UL) #define TX_MSG_ID (1UL) #define RX_MAILBOX (0UL) #define RX_MSG_ID (1UL) volatile int exit_code = 0; can_message_t recvMsg; void BoardInit(void) { CLOCK_SYS_Init(g_clockManConfigsArr, CLOCK_MANAGER_CONFIG_CNT,g_clockManCallbacksArr, CLOCK_MANAGER_CALLBACK_CNT); CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_FORCIBLE); PINS_DRV_Init(NUM_OF_CONFIGURED_PINS, g_pin_mux_InitConfigArr); } void CAN1_Init(void) { CAN_Init(&can_pal1_instance, &can_pal1_Config0); can_buff_config_t RX_buffCfg = { .enableFD = false, .enableBRS = false, .fdPadding = 0U, .idType = CAN_MSG_ID_STD, .isRemote = false }; /* Configure RX buffer with index RX_MAILBOX */ CAN_ConfigRxBuff(&can_pal1_instance, RX_MAILBOX, &RX_buffCfg, RX_MSG_ID); can_buff_config_t TX_buffCfg = { .enableFD = false, .enableBRS = false, .fdPadding = 0U, .idType = CAN_MSG_ID_STD, .isRemote = false }; /* Configure RX buffer with index RX_MAILBOX */ CAN_ConfigTxBuff(&can_pal1_instance, TX_MAILBOX, &TX_buffCfg); ); } /* * @brief Function which configures the LEDs and Buttons */ int main(void) { BoardInit(); CAN1_Init(); can_message_t sendMsg = { .cs=0U, .id = RX_MSG_ID, .data[0] = 0x05, .length = 1U }; while(1) { CAN_Send(&can_pal1_instance,TX_MAILBOX,&sendMsg); while(CAN_GetTransferStatus(&can_pal1_instance, TX_MAILBOX) == STATUS_BUSY); CAN_Receive(&can_pal1_instance,RX_MAILBOX,&recvMsg); while(CAN_GetTransferStatus(&can_pal1_instance, RX_MAILBOX) == STATUS_BUSY); }

Re: The loopback test of S32K142 using CAN PAL peripheral failed

PetrS — Wed, 19 Apr 2023 14:31:27 GMT

Hi,

try to move CAN_ConfigTxBuff into main function. But rather reorganize code little bit, e.g as below

void CAN1_Init(void)
{
   CAN_Init(&can_pal1_instance, &can_pal1_Config0);

   can_buff_config_t RX_buffCfg = {
    .enableFD = false,
    .enableBRS = false,
    .fdPadding = 0U,
    .idType = CAN_MSG_ID_STD,
    .isRemote = false
   };
   /* Configure RX buffer with index RX_MAILBOX */
   CAN_ConfigRxBuff(&can_pal1_instance, RX_MAILBOX, &RX_buffCfg, RX_MSG_ID);
}

/*
* @brief Function which configures the LEDs and Buttons
*/

int main(void)
{
   BoardInit();
   CAN1_Init();

   can_message_t sendMsg = {
    .cs=0U,
    .id = RX_MSG_ID,
    .data[0] = 0x05,
    .length = 1U
   };

   CAN_Receive(&can_pal1_instance,RX_MAILBOX,&recvMsg);

   can_buff_config_t TX_buffCfg = {
   .enableFD = false,
   .enableBRS = false,
   .fdPadding = 0U,
   .idType = CAN_MSG_ID_STD,
   .isRemote = false
   };
   /* Configure RX buffer with index RX_MAILBOX */
   CAN_ConfigTxBuff(&can_pal1_instance, TX_MAILBOX, &TX_buffCfg);

   CAN_Send(&can_pal1_instance,TX_MAILBOX,&sendMsg);

   while(1)
   {

       while(CAN_GetTransferStatus(&can_pal1_instance, RX_MAILBOX) == STATUS_BUSY);
       CAN_Receive(&can_pal1_instance,RX_MAILBOX,&recvMsg);

       for(int i=0;i<200000;i++){};

       /* Toggle output value LED0 */
       PINS_DRV_TogglePins(GPIO_PORT, (1 << LED1));

       CAN_Send(&can_pal1_instance,TX_MAILBOX,&sendMsg);
    }

BR, Petr

Re: The loopback test of S32K142 using CAN PAL peripheral failed

RyzeBai — Thu, 20 Apr 2023 02:22:46 GMT

Thanks for your advice! I achieved it after move CAN_ConfigTxBuff into main function!
But I don't understand why.can you tell me? thanks a lot.

Re: The loopback test of S32K142 using CAN PAL peripheral failed

PetrS — Thu, 20 Apr 2023 07:43:48 GMT

Hi,

I only found the TX buffer is not properly filled in Send function then, but don't know exact reason.

BR, Petr

Re: The loopback test of S32K142 using CAN PAL peripheral failed

RyzeBai — Thu, 20 Apr 2023 07:51:04 GMT

Thanks,

Best Regards.