K20‘ s Can bus can not normally start

[songtao8940]

As shown in the figure, now can bus program can not normally start, what is the requirement for the clock，plese help me

[Hui_Ma]

Hi

It need to enable the FlexCAN module clock at SIM_SCGC6[FLEXCAN0] bit or SIM_SCGC3[FLEXCAN1] bit at first.

Wish it helps.

Have a great day,
Ma Hui
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[songtao8940]

Thank you, now come to the conclusion that indeed the clock problem