S32K348 CANFD normal communication

[youngkin]

hello：

Can you provide a can fd sample(s32k344 or s32k3358), thanks!

[PetrS]

Hi,

you can refer to https://community.nxp.com/t5/S32K-Knowledge-Base/Example-S32K358-FlexCAN-TXRX-ISR-S32DS35-RTD400-500...

BR, Petr

[youngkin]

Hello:

I have studied this example（ https://community.nxp.com/t5/S32K-Knowledge-Base/Example-S32K358-FlexCAN-TXRX-ISR-S32DS35-RTD400-500...）, but I have a question, how do I set up the mailbox and filtering for CAN FD。 Should  I   add the can driver module 

and i  cannot find  the Mode of  can rx and tx （polling or  interrupt）

Also, I would like to inquire about the examples of CAN. can sample use CAN mcal module（Can_43_FLEXCAN）, while Flexcan sample use Drivers module(Flexcan). Can  Flexcan module and  Can_43_FLEXCAN  module appear in the same project at the same time?

[PetrS]

Hi,

if using IP level driver then MB and mask is simply configured within code using respective API

If using mcal level driver, ID and mask is defined in configuration, you outlined.

Flexcan_IP and  Can_43_FLEXCAN  modules can be used in the same project at the same time, but not for same FlexCAN instance.

BR, Petr

[youngkin]

I am sorry, I would like to confirm three questions，

1. i cannot find the Mode of can rx and tx （polling or interrupt）in the sample（Example-S32K358-FlexCAN-TXRX-ISR-S32DS35-RTD400）,   how to set  the mode of rx and tx?

2. about the can clock set，This clock value only needs to be written as one value（Any value）。

the can peripheral clock  need not  Choose a reference clock，as  show

3.  the sample use the can interrupt, but i can not find the interrupt set

[PetrS · Accepted solution]

Hi,

1) Using IP level driver this is set withing code

If FlexCAN_Ip_Send function is called with tx_info.polling=TRUE, then for each MB used you need to periodically call FlexCAN_Ip_MainFunctionWrite with respective MB selected as parameter. This is to process transmitted Tx MB and update driver status variable.

If tx_info.polling=FALSE, FlexCAN_Ip_MainFunctionWrite calling is not needed, but module interrupt must be properly enabled and handler assigned.

For receiving isPolling parameter of Receive function specifies interrupt/polling mode.

Here again if polling is used you need to call FlexCAN_Ip_MainFunctionRead periodically, otherwise module interrupt must be properly enabled and handler assigned.

2) correct

3) either you can assign/enable interrupt in IntCtrl_Ip component and within code just IntCtrl_Ip_Init(&IntCtrlConfig_0) is called or

leave this empty in IntCtrl_Ip component and assign/enable interrupt within code, like

IntCtrl_Ip_Init(&IntCtrlConfig_0);
IntCtrl_Ip_EnableIrq(FlexCAN0_1_IRQn);
IntCtrl_Ip_InstallHandler(FlexCAN0_1_IRQn, CAN0_ORED_0_31_MB_IRQHandler, NULL_PTR);

BR, Petr

[youngkin]

thanks for your help