We have an MPC5643L connected to an MC33907 SBC.
CAN communication is connected to the controller embedded on the SBC.
We work in the following situation:
1) CAN communication simulated (the MPC5643L sends few messages on CAN bus and receives different ones from Busmaster in order to simulate a very simple bidirectional communication),
2) a bus-off is intentionally caused short circuiting tx and rx pins (FlexCAN_0.ESR.BOFF_INT = 1 as expected),
3) short-circuit is removed and recovered by a w1c operation on FlexCAN_0.ESR.BOFF_INT (which value is 0 as expected),
4) Unfortunately CAN communication is NOT restored on both direction as expected instead.
Attached screen shows ESR content after point 4).
So the question is: is required any other bit clean-up on ESR register or addition action (on SBC CAN controller maybe???) in order to recover CAN communication after removing the bus-off error?
Any suggestion would be very appreciated.
Thank you in advance.