topic Re: Kinetis K22 CANBus in Kinetis Microcontrollers

Kinetis K22 CANBus

kentgu — Thu, 05 Nov 2015 06:22:28 GMT

hi,

Now I am using FRDM-K22, the Mico chip is MK22F51212. Now I need CAN bus function? I want to know if MK22F51212 have CAN bus contrroller? So I just add CAN tranceiver, and then can simulate CAN bus communication.

TKS~

Kent

Re: Kinetis K22 CANBus

kentgu — Fri, 06 Nov 2015 01:20:16 GMT

Hi,

I think I get the Pin28 and Pin 29 of MK22Fx512 64pins are for CANTX and CANRX. And which is FlexCAN bus demo SW example?

TKS~

Kent

Re: Kinetis K22 CANBus

kentgu — Fri, 06 Nov 2015 02:46:00 GMT

Update the above information, seems that FRDM-K22F use MK22FN512LVH12, MK22FN512LVH12 doesn't have CANbus pins, but MK22FX512LVH12 have CAN bus pins. My question is that:

#1, Which difference between 2 chipsets? Just CAN bus pins different?

#2, In the P220 of "K22P64M120SF5V2RM" and P61 of "K22P121M120SF7-Datasheet, there are different pinout defintion. which one I should refer if use MK22FX512LVH12?

#3, If I want to use FlexCAN bus , there are CAN example demo SW with MK22FX512LVH12? Is there CAN library for MK22FX512LVH12?

Thanks,

Kent

Re: Kinetis K22 CANBus

Hui_Ma — Fri, 25 Dec 2015 02:37:08 GMT

Hi,

First of all, sorry for the so later reply.

For the K22_120MHz product has different device version, which original from different Kinetis product family.

That's why some K22_120MHz product has FlexCAN module, while another without.

Please check here for the detailed info.

About FlexCAN example code, please refer attached FlexCAN module validation code.

Wish it helps.

best regards,

Ma Hui

BTW: Merry Christmas and Happy New Year!