Error Codes

Error Codes

This chapter contains the description of all error codes.

Error Code

The error code indicates, that ...

CAN_ERR_NONE

no error is detected.

CAN_ERR_NULLPTR

a parameter pointer is NULL

CAN_ERR_BUSID

the bus identifier is out of range

CAN_ERR_FRMSIZE

the buffer size (CAN frame size) is invalid

CAN_ERR_OPEN

the driver indicates, that the CAN bus cant be opened

CAN_ERR_ENABLE

the CAN bus cant be enabled

CAN_ERR_IOCTRLFUNC

the I/O function code is out of range

CAN_ERR_NULLMSG

the given message identifier is not found

CAN_ERR_MSGID

the message identifier is out of range

CAN_ERR_MSGUNUSED

unused signals are linked to the message

CAN_ERR_MSGCREATE

the message cant be created

CAN_ERR_SIGID

the signal identifier is out of range

CAN_ERR_NULLSIGCFG

the signal is not configured

CAN_ERR_CANSIZE

the given signal size is invalid, e.g. is not 1, 2 or 4

CAN_ERR_SIGCREATE

the signal cant be created

CAN_ERR_FRMWIDTH

the given frame width is not 1, 2 or 4

CAN_ERR_OSFREE

the CAN frame cant be released to the memory pool

CAN_ERR_OSQUEUE

the CAN frame cant be set into the RX or TX queue

CAN_ERR_OSALLOC

the CAN frame cant be allocated from the memory pool

CAN_ERR_OSSEM

the CAN semaphore(s) cant be created

CAN_ERR_OSQPEND

the CAN RX queue is empty and timeout error is detected

CAN_ERR_NOFRM

the CAN RX queue is empty

CAN_ERR_OSSEMPEND

the CAN semaphore pending timeout error is detected

CAN_ERR_OSSEMPOST

the CAN semaphore posting timeout error is detected

CAN_ERR_OSQACCEPT

the CAN TX queue is empty

Note: the global variable CPU_INT16S can_errnum holds the last detected error code.