RESI=B_0x0, LEC=B_0x0, RBRS=B_0x0, ACT=B_0x0, BO=B_0x0, EW=B_0x0, EP=B_0x0, REDL=B_0x0, PXE=B_0x0
FDCAN protocol status register
| LEC | Last error code 0 (B_0x0): No error: No error occurred since LEC has been reset by successful reception or transmission. 1 (B_0x1): Stuff error: More than 5 equal bits in a sequence have occurred in a part of a received message where this is not allowed. 2 (B_0x2): Form error: A fixed format part of a received frame has the wrong format. 3 (B_0x3): AckError: The message transmitted by the FDCAN was not acknowledged by another node. 4 (B_0x4): Bit1Error: During the transmission of a message (with the exception of the arbitration field), the device wanted to send a recessive level (bit of logical value 1), but the monitored bus value was dominant. 5 (B_0x5): Bit0Error: During the transmission of a message (or acknowledge bit, or active error flag, or overload flag), the device wanted to send a dominant level (data or identifier bit logical value 0), but the monitored bus value was recessive. During Bus_Off recovery this status is set each time a sequence of 11 recessive bits has been monitored. This enables the CPU to monitor the proceeding of the Bus_Off recovery sequence (indicating the bus is not stuck at dominant or continuously disturbed). 6 (B_0x6): CRCError: The CRC check sum of a received message was incorrect. The CRC of an incoming message does not match with the CRC calculated from the received data. 7 (B_0x7): NoChange: Any read access to the protocol status register re-initializes the LEC to 7. When the LEC shows the value 7, no CAN bus event was detected since the last CPU read access to the protocol status register. |
| ACT | Activity 0 (B_0x0): Synchronizing: node is synchronizing on CAN communication 1 (B_0x1): Idle: node is neither receiver nor transmitter 2 (B_0x2): Receiver: node is operating as receiver 3 (B_0x3): Transmitter: node is operating as transmitter |
| EP | Error passive 0 (B_0x0): The FDCAN is in the Error_Active state. It normally takes part in bus communication and sends an active error flag when an error has been detected 1 (B_0x1): The FDCAN is in the Error_Passive state |
| EW | Warning status 0 (B_0x0): Both error counters are below the Error_Warning limit of 96 1 (B_0x1): At least one of error counter has reached the Error_Warning limit of 96 |
| BO | Bus_Off status 0 (B_0x0): The FDCAN is not Bus_Off 1 (B_0x1): The FDCAN is in Bus_Off state |
| DLEC | Data last error code |
| RESI | ESI flag of last received FDCAN message 0 (B_0x0): Last received FDCAN message did not ha ve its ESI flag set 1 (B_0x1): Last received FDCAN message had its ESI flag set |
| RBRS | BRS flag of last received FDCAN message 0 (B_0x0): Last received FDCAN message did not have its BRS flag set 1 (B_0x1): Last received FDCAN message had its BRS flag set |
| REDL | Received FDCAN message 0 (B_0x0): Since this bit was reset by the CPU, no FDCAN message has been received 1 (B_0x1): Message in FDCAN format with EDL flag set has been received |
| PXE | Protocol exception event 0 (B_0x0): No protocol exception event occurred since last read access 1 (B_0x1): Protocol exception event occurred |
| TDCV | Transmitter delay compensation value |