Fault overrun detection feature
Techniques are disclosed for a fault monitor to determine that no fault has been lost. The fault monitor may distinguish between critical and non-critical faults without the risk of missing a critical fault. The fault monitor may detect a new fault event from a fault source and may set a fault overrun flag when the new fault event is detected while an existing fault event from the fault source is being processed. When the fault monitor receives a fault acknowledgement to indicate completion of processing of the existing fault event, the fault monitor may generate a request to process the new fault event as an overrun fault based on the fault overrun flag is set. The fault monitor may generate a request to process the new fault event as a non-overrun fault when the new fault event is detected without an existing fault event from the fault source being processed.
1 . A method of fault reporting, comprising:
detecting a new fault event from a fault source;
setting a fault overrun flag when the new fault event is detected while an existing fault event from the fault source is being processed;
receiving a fault acknowledgement to indicate completion of processing of the existing fault event; and
generating a request to process the new fault event as an overrun fault based on the fault overrun flag being set.
2 . The method of claim 1 , further comprising:
transmitting the request to process the new fault event as an overrun fault to a processing unit that processes the existing fault event.
3 . The method of claim 2 , wherein transmitting the request comprises:
transmitting the request with an indication that the new fault event comprises an overrun fault but without additional information associated with the new fault event.
4 . The method of claim 3 , wherein the processing unit is configured to classify the overrun fault as a critical fault based on a predefined rule set stored in memory.
5 . The method of claim 1 , further comprising:
generating a request to process the new fault event as a non-overrun fault when the new fault event is detected without an existing fault event from the fault source being processed.
6 . The method of claim 5 , wherein generating the request to process the new fault event as a non-overrun fault comprises:
capturing information associated with the new fault event; and
transmitting the information captured with the request to a processing unit to indicate that the new fault event comprises a non-overrun fault.
7 . The method of claim 6 , wherein the information comprises predefined diagnostic data fields, and whether the processing unit classifies the new fault event as a critical fault or a non-critical fault based on a comparison of the diagnostic data to one or more threshold values stored in memory.
8 . The method of claim 1 , further comprising:
clearing a fault request associated with the existing fault when the fault acknowledgement for the existing fault is received.
9 . The method of claim 1 , wherein generating the request to process the new fault event as an overrun fault comprises:
clearing the fault overrun flag.
10 . The method of claim 1 , further comprising:
generating a request to process the new fault event as a non-overrun fault when detecting the new fault event while receiving the fault acknowledgement to indicate completion of processing of the existing fault event.
11 . An apparatus comprising:
a processing unit configured to perform operations, the operations comprising:
detect a new fault from a fault source;
set a fault overrun flag when the new fault event is detected while an existing fault event from the fault source is being processed;
receive a fault acknowledgement to indicate completion of processing of the existing fault event; and
generate a request to process the new fault event as an overrun fault based on the fault overrun flag being set.
12 . The apparatus of claim 11 , wherein the processing unit is further configured to perform operations comprising:
transmit the request to process the new fault event as an overrun fault to a second processing unit that processes the existing fault.
13 . The apparatus of claim 12 , wherein to transmit the request, the processing unit is further configured to perform operations comprising:
transmit the request with an indication that the new fault event comprises an overrun fault but without additional information associated with the new fault event.
14 . The apparatus of claim 13 , wherein the second processing unit is configured to classify the overrun fault as a critical fault based on a predefined rule set stored in memory.
15 . The apparatus of claim 11 , wherein the processing unit is further configured to perform operations comprising:
generate a request to process the new fault event as a non-overrun fault when the new fault event is detected without an existing fault event from the fault source being processed.
16 . The method of claim 15 , wherein to generate the request to process the new fault event as a non-overrun fault, the processing unit is configured to perform operations comprising:
capture information associated with the new fault event; and
transmit the information captured with the request to a second processing unit to indicate that the new fault event comprises a non-overrun fault.
17 . The apparatus of claim 16 , wherein the information comprises predefined diagnostic data fields, and whether the processing unit classifies the new fault event as a critical fault or a non-critical fault based on a comparison of the diagnostic data to one or more threshold values stored in memory.
18 . The apparatus of claim 11 , wherein the processing unit is further configured to perform operations comprising:
clear a fault request associated with the existing fault when the fault acknowledgement for the existing fault is received.
19 . The apparatus of claim 11 , wherein to generate the request to process new fault event as an overrun fault, the processing unit is further configured to perform operations comprising:
clear the fault overrun flag.
20 . The apparatus of claim 11 , wherein the processing unit is further configured to perform operations comprising:
generate a request to process the new fault event as a non-overrun fault when the new fault event is detected while the fault acknowledgement to indicate completion of processing of the existing fault event is received.