S32K310 CAN Interrupt Receive

Embedded_novice — Thu, 27 Feb 2025 09:02:15 GMT

我使用CAN以及CANIF配置了S32K310的CAN驱动模块。我知道调用CAN_Write()函数进行报文的发送，但我存有以下的一些问题：

1.我该如何进行报文的接收呢？我看到有一些文章说能够通过CanIf_RxIndication()函数进行接收。但是这个函数在静态代码中的逻辑应当是自动调用，而不是由我在外部主程序中调用。或者说这个函数在触发中断自动执行后将数据进行了存储，那我该如何将这些数据读取出来呢？我是否能用自己编写的回调函数去替换他？（我在MCAL的例程中没有找到使用中断的CAN例程，似乎只有POLLING模式的例程）

2.为什么CAN的接收一定要通过CANIF而发送却可以直接由CAN驱动发出？这是否有一些规范限制我必须这样做。

感谢帮助！！

Re: S32K310 CAN Interrupt Receive

Julián_AragónM — Fri, 28 Feb 2025 21:00:34 GMT

Hi @Embedded_novice,

1. You can look at the following training for some information on how FlexCAN works with the drivers: FLEXCAN WITH RTD AND LOW-LEVEL DRIVERS. In order to receive messages in interrupt mode, you must configure the interrupt driver (IntCtrl) and select polling = FALSE inside the FlexCAN data info structure and use "FlexCAN_Ip_Receive".

You can use this example from community post as guidance: Example S32K344 FlexCAN_Ip TX/RX/EnhanceRXFIFO DMA test S32DS3.5 RTD400 - NXP Community.

2. I imagine you are referring to the CanIf_RxIndication API? As I said in the previous response, you can use FlexCAN_Ip_Receive instead.

Best regards,
Julián

topic S32K310 CAN Interrupt Receive in S32K

S32K310 CAN Interrupt Receive

Re: S32K310 CAN Interrupt Receive