Hi Team,
My customer did CAN bus off and recovery experiment, they connect CANH to ground for 3 second for bus off, and disconnect for 10 seconds for recovery, in normal case everything is ok, but they did the experiment repeatedly, after did several ten thousands time which require several days, there come an issue that stop at CAN initialization mode even they did not connect CANH to ground any more, they connected the device to emulator and see the CAN CCE bit is always 1 and unable to enter normal mode.
Below are the CAN register value when issue occur:
The CANRX is always high and should be in bus idle sequence, but CCE bit is always 1.
they are unable to provide the code, but they say they follow the initialization sequence as below:
Any suggestion for this issue?
