CAN Rx Notification MCAL & CAN2 Enhanced Rx FIFO not available

noobsplzwin — Thu, 08 Aug 2024 22:59:32 GMT

Hi, NXP forum,

1. I am trying to use the CAN MCAL in the configuration tool to meet AutoSar requirements. But I couldn't find the CAN Rx Notification Callback like the FlexCan driver.

I only found one API - void Can_43_FLEXCAN_MainFunction_Read(void), which can only receive the CAN message in polling.

May I know what the alternative is for CAN Rx Callback in MCAL?

2. I noticed to use Can_43_FLEXCAN_MainFunction_Read(), I need to configure the RxFifo. However, for CAN2, only legacy FIFO is available, and the HW Filter code must be multiple of 8. But the CAN ID I am trying to read is 0x784. Is the enhanced FIFO only available on CAN0?

Thanks ahead for any help.

Connor

Re: CAN Rx Notification MCAL & CAN2 Enhanced Rx FIFO not available

PetrS — Fri, 09 Aug 2024 09:52:13 GMT

Hi,

1) use CanIf_TxConfirmation and CanIf_RxIndication functions which are called upon successful transmission and reception. Refer to RTD demo showing polling mode.

2) yes, enhanced RXFIFO is only available on CAN0 on most S32K3 devices, see Table 476. FlexCAN configuration and instances of the device Reference Manual for more info

BR, Petr

topic CAN Rx Notification MCAL & CAN2 Enhanced Rx FIFO not available in S32K

CAN Rx Notification MCAL & CAN2 Enhanced Rx FIFO not available

Re: CAN Rx Notification MCAL & CAN2 Enhanced Rx FIFO not available