topic Re: EB: How to add CAN bus off interrupt callback function? in S32K

EB: How to add CAN bus off interrupt callback function?

temp_user — Mon, 18 Nov 2024 10:36:45 GMT

1. I want to add CAN bus off interrupt callback function in EB. I found in CANIf module, there is CanIfDispatchCfg, and if I set callback function name in CanIfDispatchUserCtrlBusOffName, and set "CDD" in CanIfDispatchUserCtrlBusOffUL, then can I set a callback function for bus off interrupt?

2. If not, can I set CAN bus interrupt callback function in EB? Here I use S32K344 and RTD 4.0.0.0.

Actually, when I follow the point 1 to set the bus off interrupt callback function, then after I build the project, some error reported, "CAN bus off callback function is not declared here".

Re: EB: How to add CAN bus off interrupt callback function?

temp_user — Thu, 21 Nov 2024 09:32:31 GMT

Any one can support?

Re: EB: How to add CAN bus off interrupt callback function?

PetrS — Thu, 28 Nov 2024 08:44:30 GMT

Hi,

it would be enough to select interrupt processing in FlexCAN setting and add interrupt handler in Platform setting

Then CanIf_ControllerBusOff callback is called when Bus off happens.

BR, Petr

Re: EB: How to add CAN bus off interrupt callback function?

temp_user — Thu, 28 Nov 2024 08:58:03 GMT

Hi PetrS,

Thank you for your reply.

But we can not modify function CanIf_ControllerBusOff() as it is provided by RTD. Actually I want to perform some action when bus off occured. So I want to know whether there is a bus off interrupt callback function that I can use.

Re: EB: How to add CAN bus off interrupt callback function?

PetrS — Wed, 04 Dec 2024 11:08:33 GMT

Hi,

below is feedback from RTD team...

This way just applied in ASR context. Please follow steps:

1. Create 1 callback function for Bus off in main.c. User defines this function by themselves.

2. Create 1 header file to extern this callback function and this file will be included in Can_Cfg.c. In my case, I created CanIf_Header.h

In this file, extern the function Bus Off Callback.

3. In CanIf configuration, fill header file and Call back function name.

BR, Petr