Bus-Off Status.

0x0 = The CAN controller is not in bus-off state.

0x1 = The CAN controller is in bus-off state.

Warning Status.

0x0 = Both error counters are below the error warning limit of 96.

0x1 = At least one of the error counters has reached the error warning limit of 96.

Error Passive.

0x0 = The CAN module is in the Error Active state, that is, the receive or transmit error count is less than or equal to 127.

0x1 = The CAN module is in the Error Passive state, that is, the receive or transmit error count is greater than 127.

Received a Message Successfully. This bit must be cleared by writing a 0 to it.

0x0 = Since this bit was last cleared, no message has been successfully received.

0x1 = Since this bit was last cleared, a message has been successfully received, independent of the result of the acceptance filtering.

Transmitted a Message Successfully. This bit must be cleared by writing a 0 to it.

0x0 = Since this bit was last cleared, no message has been successfully transmitted.

0x1 = Since this bit was last cleared, a message has been successfully transmitted error-free and acknowledged by at least one other node.

Last Error Code. This is the type of the last error to occur on the CAN bus.

0x0 = No Error

0x1 = Stuff ErrorMore than 5 equal bits in a sequence have occurred in a part of a received message where this is not allowed.

0x2 = Format ErrorA fixed format part of the received frame has the wrong format.

0x3 = ACK ErrorThe message transmitted was not acknowledged by another node.

0x4 = Bit 1 ErrorWhen a message is transmitted, the CAN controller monitors the data lines to detect any conflicts. When the arbitration field is transmitted, data conflicts are a part of the arbitration protocol. When other frame fields are transmitted, data conflicts are considered errors.A Bit 1 Error indicates that the device wanted to send a High level (logical 1) but the monitored bus value was Low (logical 0).

0x5 = Bit 0 ErrorA Bit 0 Error indicates that the device wanted to send a Low level (logical 0), but the monitored bus value was High (logical 1).During bus-off recovery, this status is set each time a sequence of 11 High bits has been monitored. By checking for this status, software can monitor the proceeding of the bus-off recovery sequence without any disturbances to the bus.

0x6 = CRC ErrorThe CRC checksum was incorrect in the received message, indicating that the calculated value received did not match the calculated CRC of the data.

0x7 = No EventWhen the LEC bit shows this value, no CAN bus event was detected since this value was written to the LEC field.