Kinetis Microcontrollers中的主题 Re: KDS, Kinetis KE06, Hard Fault when Tx and Rx CAN data

KDS, Kinetis KE06, Hard Fault when Tx and Rx CAN data

bitjockey — Thu, 07 Aug 2014 19:39:04 GMT

Erich,

I am developing on a FRDM-KE06 board using KDS and also using PE to generate low level code for a design I am working on. I have the MSCAN module set up to interrupt for CAN Receives, but not Transmits. I currently have the CAN filters set to receive all messages. If I just receive CAN messages everything seems fine. If I add code to periodically Transmit a CAN message then I get a Hard Fault and it looks like the PE generated read of the receive frame is where it is exiting via the hard fault. I don't remember having any such issues when coding on a HCS12 part. I looks to me like the MSCAN hardware is the same for both. Any ideas??

Brian

Re: KDS, Kinetis KE06, Hard Fault when Tx and Rx CAN data

BlackNight — Fri, 08 Aug 2014 07:50:18 GMT

Hi Brian,

last time when I was dealing with CAN was probably three years ago, and I have never used it on any Kinetis devices. So not sure if I can be of any help for your here :-(

Erich

Re: KDS, Kinetis KE06, Hard Fault when Tx and Rx CAN data

bitjockey — Fri, 08 Aug 2014 13:48:29 GMT

Erich,

Figured out my issue, in my CAN Rx interrupt the structure pointer passed into CAN1_Read was pointing at the CAN Tx Structure which was caused a fault when CAN1_Read was writing to the structure.....

Regards,