60
9.6.6
CAN_Status
CAN_Status(Handle)
Function:
Checks the status bits for more specific details when an error occurs.
Parameters:
•
Handle
o
Type: Integer
o
The handle of the CAN channel whose status bits are to be inquired.
o
Format: A numeric value provided by the return value of CAN_Open
o
Example: 2508
•
Return value:
o
Type: Integer
o
Code indicating result of CAN_Status.
o
Result:
Bit [2, 1, 0]
•
0, 0, 0: no error
•
0, 0, 1: stuff error
•
0, 1, 0: form error
•
0, 1, 1: ACK error
•
1, 0, 0: Bit1Error
•
1, 0, 1: Bit0Error
•
1, 1, 0: CRCError
•
1, 1, 1: unused
Bit [3]
•
1: message successfully transmitted
•
0: no message has been transmitted
Bit [4]
•
1: message successfully received
•
0: no message has been received
Bit [5]
•
1: CAN core is in error passive state
•
0: CAN core is in error active state
Bit [6]
•
1: at least one error counter in EML has reached the warning
limit of 96
•
0: both error counters are below the warning limit of 96
Bit [7]
•
1: CAN module is in bus-off state
•
0: CAN module is not in bus-off state
<BELL> = ERROR
