S32K中的主题 CAN PAL Dev Assert Issue

CAN PAL Dev Assert Issue

zubizeratta — Tue, 08 Oct 2024 14:09:18 GMT

Hello,

MCU: S32K118

SDK : S32SDK_S32K1XX_RTM_4.0.1

In the CAN Driver, can_pal.c , Can_AllocateState function there's a DEV_ASSERT check which fails:

(NO_OF_FLEXCAN_INSTS_FOR_CAN =1)

for (i = 0; i < NO_OF_FLEXCAN_INSTS_FOR_CAN; i++)
{
if (isAllocated[i] == false)
{
instanceMapping[i] = instance;
isAllocated[i] = true;
break;
}
}

if (i >= NO_OF_FLEXCAN_INSTS_FOR_CAN)
{
/* Should Never Reach Here */
DEV_ASSERT(false);
i = (NO_OF_FLEXCAN_INSTS_FOR_CAN-1U);
}

Even though value of 1 is valid for NO_OF_FLEXCAN_INSTS_FOR_CAN I don't get it exactly why it's checked if it's equal or greated than one. Shouldn't it be just ">1) ?

Re: CAN PAL Dev Assert Issue

Julián_AragónM — Tue, 08 Oct 2024 18:02:46 GMT

Hi @zubizeratta,

The second part of the CAN_AllocateState function should never be reached if the structure selected for allocating is available/correctly defined. It simply checks if the previous for cycle failed to allocate any of the available structures to the instances, hence the break statement in order to exit the function.

Have you correctly configured the instance to initialize in the CAN_Init function? Please refer to the example if needed:

Best regards,
Julián

Re: CAN PAL Dev Assert Issue

zubizeratta — Wed, 09 Oct 2024 06:35:46 GMT

Hi Julián,

It seems to be allocated but I will check again if something is wrong . Thanks.