TWI657337B - Event recording controller and electronic device - Google Patents

Abstract

An event recording controller for an electronic device. The event recording controller includes an event detection unit and an event recording unit. The event detection unit is configured to continuously detect whether one of a plurality of specific events occurs. In addition, the event detection unit is configured to respond to detecting a specific event occurrence of the plurality of specific events to send a recording instruction corresponding to the specific event that occurred to the event recording unit. The event recording unit is configured to respond to the received recording instruction without automatically controlling the processor of the electronic device, and automatically according to the instruction of the recording instruction, will correspond to the event information of the specific event that occurred. Recording from one or more of a plurality of components of the electronic device to a battery backup memory.

Description

Event recording controller and electronic device

The invention relates to a controller, and in particular to an event recording controller and an electronic device.

When a system (electronic device / computer host / server) generates a fatal error, the most difficult situation to debug is when you do n’t know when it will happen and where (which component) it will happen. Therefore, after the incident, things have often changed, and the main cause of the incident is long gone. At present, the conventional debugging technologies are designed with the processor as the core and the processor's perspective. The processor's control records the footprint of the program and the memory usage history. If there is a problem or error in the processor itself, the cause of the error or related information often cannot be recorded.

In addition, general debugging techniques can only be used at the stage of developing a system or developing related applications, and must cooperate with the processor to execute the debug tool software. However, once a system has been developed and mass production has entered the market, these systems that are out of development (debugging tools are no longer used) may still have errors, and the errors that occur at this time will directly affect the use This results in poor user perception of the system, and also reduces work efficiency.

Based on this, how to efficiently record the errors of the system without the control of the processor is a problem that people in the art are committed to solving.

The invention provides an event recording controller and an electronic device having the event recording controller, which can detect the occurrence of a specific event and send a recording instruction corresponding to the specific event so as not to pass through the processor of the electronic device. Control to record event information corresponding to the specific event.

An embodiment of the present invention provides an event recording controller suitable for an electronic device. The electronic device includes a plurality of elements, wherein the plurality of elements include a processor. The event recording controller includes an event detection unit and an event recording unit. The event detection unit is coupled to the plurality of components of the electronic device, and is configured to continuously detect whether one of a plurality of specific events occurs. The event recording unit is coupled to the event detection unit. In addition, the event detection unit is configured to respond to detecting a specific event occurrence of the plurality of specific events to send a recording instruction corresponding to the specific event that occurred to the event recording unit. The event recording unit is used to automatically receive event information corresponding to the specific event that has occurred from the plurality of elements in response to the received recording instruction without the control of the processor. One or more components indicated by the recording instruction are recorded in the battery backup memory.

An embodiment of the invention provides an electronic device. The electronic device includes a processor, a battery backup memory, and an event recording controller. The event recording controller is coupled to the processor and the battery backup memory. The event recording controller is configured to continuously detect whether one of a plurality of specific events occurs, wherein the processor cannot operate normally when the plurality of specific events occur. The event recording controller is further configured to automatically detect an event corresponding to the specific event that has occurred without detecting the occurrence of a specific event of the plurality of specific events, without the control of the processor. Information is recorded from a component of the electronic device to the battery backup memory

Based on the above, the event recording controller provided by the embodiment of the present invention can automatically respond to the occurrence of a specific event (error event) detected without the control of the processor of the electronic device to which it belongs. Event information of the specific event that occurred is recorded from one or more components of the plurality of components of the electronic device to a battery backup memory so that the processor can still record quickly if the processor fails to operate normally Information related to a specific event, and related personnel can use the recorded information to understand and correct the cause of a specific event, thereby improving the overall performance of the electronic device.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

The spirit of the present invention is that, when a fatal error / error event of a system (electronic device) is detected, this time point is used as a time point for performing a snapshot. Then, corresponding to a variety of fatal errors that occur, perform snapshots to multiple locations (different components of the system / electronic device) to take pictures or photograph images of the location (corresponding to the system / electronic device described in the fatal error) Information about the different components), and store the image in fast-storable memory. It should be noted that, in order to quickly store related information when the specific fatal error / error event occurs, the memory used in this embodiment has a higher access speed than the general non-volatile memory. Memory, and uses (rechargeable) batteries to supply power, so that this volatile memory can store data for a long time.

FIG. 1 is a block diagram illustrating an event recording controller and an electronic device to which the event recording controller belongs according to an embodiment of the present invention.

Referring to FIG. 1, the electronic device 10 having the event recording controller 110 further includes a battery backup memory 120, a processor 130, an interrupt controller 140, a main memory 150 and a peripheral device 160.

In this embodiment, the event recording controller 110 includes an event detection unit 111 and an event recording unit 112. The event detection unit 111 is used to detect the occurrence of a specific event (in the background), and the event recording unit 112 is used to record the event information (in the background) corresponding to the specific event that occurred. The electronic device having the event recording controller 110 may have a function (in the background) of detecting and recording event information corresponding to a specific event that occurs due to the event recording controller. It should be noted that when a fatal error occurs in the system (electronic device), the processor 130 cannot operate normally.

In this embodiment, the battery backup memory 120 includes a battery and a volatile memory coupled to the battery. The volatile memory is, for example, a static random access memory (SRAM) or other volatile memory having the same speed or higher. Because the battery can provide power to the static random access memory, the data recorded by the static random access memory can be stored for a long time and will not disappear because the electronic device stops supplying power. When the electronic device 10 is powered on, the battery can be charged. In other words, the battery backup memory 120 can also be regarded as a high-speed volatile memory that does not require external power and can store data for a long time. The battery is, for example, a rechargeable lithium battery or other suitable rechargeable batteries.

The processor 130 includes a register (register) and circuit units such as execution control and calculation. The processor 130 is hardware (for example, a chipset, a processor, and the like) having computing capabilities, and is used to manage the overall operation of the electronic device 10. In this embodiment, the processor 130 is, for example, a core or multi-core Central Processing Unit (CPU), a microprocessor (micro-processor), or other programmable processor (Programmable processor). ), Digital Signal Processor (DSP), Programmable Controller, Application Specific Integrated Circuits (ASIC), Programmable Logic Device (PLD), or other similar devices . It should be noted that, in this embodiment, the event recording controller 110 can operate independently of the processor 130.

The interrupt controller 140 is used to monitor the exception status of the processor 130 and each of the peripheral devices 160 (1) to 160 (N), and generate an interrupt event according to the different exception status to further process the exception status .

The main memory 150 is used to temporarily store data and instructions from the processor 130, or the main memory 150 may also temporarily store data from the peripheral device 160. The main memory 150 is, for example, a random access memory (random access memory, RAM).

The peripheral device 160 includes a plurality of peripheral devices 160 (1) to 160 (N). The peripheral devices 160 (1) to 160 (N) may be peripheral controls such as analog digital converter (ADC), digital analog converter (DAC), serial peripheral interface (SPI), integrated circuit bus (I2C), etc. The circuit unit may also be, for example, a power management device, a storage device, a communication device, or a sensor.

In this embodiment, the above-mentioned components 110 to 160 can be connected and transmitted through a system bus 170 (system bus) 170.

FIG. 2 is an operation flowchart of the event recording controller according to an embodiment of the present invention. Please refer to FIG. 1 and FIG. 2 at the same time. In step S21, the event detection unit 111 continuously detects whether one or more of a plurality of specific events occur. If the occurrence of one or more specific events is detected, in response to the detection of the occurrence of one or more specific events among the plurality of specific events (step S21àY), in step S23, the event detection unit 111 sends A recording instruction corresponding to the occurrence of the one or more specific events to an event recording unit. Otherwise (step S21 à No), the entire operation flow re-executes step S21, that is, the event detection unit 111 continues to continuously detect whether a specific event occurs. The following uses multiple examples to describe various specific events that can be detected by the event detection unit 111 and corresponding detection methods / standards. That is, a variety of timing points for executing a snapshot (the conditions of steps S21 to S23) are described.

In one embodiment, the event detection unit 111 (or the electronic device 10) includes a counter. After the electronic device 10 is powered on, the counter continues to count from a predetermined value (can be set to count down or count up), wherein when the counter receives an update signal from the processor 130, all counters The counter recounts from a predetermined value, wherein when the counter counts to a target value, the counter sends a reset signal to the processor 130 to reset the electronic device 10 (or the processor 10). Wherein, the processor is programmed via the event detection unit 111 to send the update signal to the counter every time a predetermined period elapses, wherein the predetermined period is smaller than the counter from the predetermined value Time counting to the target value. The counter and related mechanism may also be referred to as a watch dog mechanism.

For example, suppose the predetermined value is 3000, the target value is 0, and the counter counts down the predetermined value to the target value at a rate of 1 countdown every 1 millisecond. The predetermined period may be set (programmed) to 2800 milliseconds, for example. That is, each time before the counter counts down to 0, because the predetermined period is less than the time (3,000 milliseconds) from the countdown to the target value. Therefore, under normal circumstances, the counter will count down continuously according to the update signal from the processor 130. However, in the event that an error occurs in some processors 130, the processor 130 itself may enter an infinite loop or die. At this time, the processor 130 cannot send an update signal to the counter. In this case, the counter counts down to the target value and sends a reset signal to the processor 130 to forcibly reset the processor 130. In another embodiment, when the counter counts to a target value, the counter sends a reset signal to a plurality of predetermined components to enforce the plurality of predetermined components.

In this embodiment, the event detection unit 111 continues to send a reset signal on the background detection counter (ie, the event detection unit 111 continuously listens to the counter). When the event detection unit 111 detects that the counter sends a reset signal, the event detection unit 111 will consider that a fatal error / dead / dead loop occurs in the processor 130, and determine the first specific event among the specific events. occur. Then, in response to detecting the occurrence of the first specific event, the event detection unit 111 sends a first recording instruction corresponding to the first specific event to the event recording unit 112.

Please return to FIG. 2. In step S25, the event recording unit 112 automatically transfers event information corresponding to the one or more specific events that have occurred from a plurality of electronic devices without the control of the processor 130. One or more components indicated by the recording instruction in the component are recorded to the battery backup memory.

For example, the event detection unit 111 automatically generates a corresponding event in the background corresponding to the first specific event without the control of the processor 130 (that is, the processor 130 cannot interfere with or learn the recording operation performed by the event recording controller). The first recording instruction is transmitted to the event recording unit 112, so that the event recording unit 112 performs one or more recording operations according to the first recording instruction in the background.

The content of the first recording instruction includes instructing the event recording unit 112 to perform one or a combination of the following types of snapshot operations (first to eighth recording operations): (1) the first recording operation, from processing The designated data (the event information) is copied to the battery backup memory 120 in the device 130. Specifically, the instruction data may include data / values stored in a register of a specific processor 130. More specifically, the register is, for example, a program counter (PC), and the stored data / values include information used to instruct the processor to execute a sequence of instructions in the next step. Depending on the hardware details of a particular processor, the program counter may hold the instruction being executed or the address of the next instruction to be executed. The program counter is automatically incremented every instruction cycle, so instructions are normally fetched continuously from the register. The registrar may also be a stack pointer, which stores the address requested by the last program in the stack. A stack is a dedicated buffered registrar that stores data from top to bottom. The address of the most recently entered program request resides at the top of the stack. In other words, it is possible to know which programs are executed by the processor 130 by stacking multiple addresses in the index. It should be noted that the present invention is not limited to the contents of the register of the processor copied by the first recording operation. The manufacturer can set different recording instructions according to requirements to set the corresponding destination of the first recording operation (the data of the registrar to be copied).

(2) The second recording operation copies all the data stored in the designated section of the main memory 150 to the battery backup memory 120. Specifically, in the second recording operation, the event recording unit 112 will go to one or more memory locations specified by the corresponding recording instruction in the main memory 150 according to the recording instruction used to instruct the second recording operation. Address section to copy the data (value) stored in the memory section to the battery backup memory 120.

(3) The third recording operation is to copy the data of the register of one or more designated components among the plurality of components (such as components 130, 140, 150, 160) of the electronic device 10 to the battery backup memory 120. Specifically, similar to the first recording operation, in the second recording operation, the event recording unit 112 will copy to the register of the component indicated by the recording instruction according to the recording instruction for instructing the third recording operation to be performed. The data stored in the register is stored in the battery backup memory 120.

(4) A fourth recording operation, recording a plurality of sensing data respectively sensed by a plurality of sensors of the electronic device 10 to the battery backup memory 120. Specifically, the electronic device 10 (or its components) may have multiple sensors, such as sensors that can sense temperature, voltage, current, and the like. The event recording unit 112 can copy the sensing data sensed by the sensor to the battery backup memory 120 to the sensor indicated by the recording instruction according to the recording instruction for instructing the fourth recording operation to be performed.

(5) The fifth recording operation records the current time of the electronic device 10 corresponding to the specific event that has occurred to the battery backup memory 120. Specifically, the recording instruction for instructing the fifth recording operation is performed so that the event recording unit 112 can record the time when the corresponding specific event currently occurs through the internal clock of the electronic device 10.

(6) In a sixth recording operation, an event log of an element corresponding to a specific event that occurred in the plurality of elements of the electronic device 10 is copied to the battery backup memory 120. Specifically, in the sixth recording operation, the event recording unit 112 will go to the component indicated by the recording instruction (or other event log storing the component according to the recording instruction used to instruct the sixth recording operation). The storage unit / storage device) copies the current event log of the component to the battery backup memory 120.

(7) In the seventh recording operation, the information in the recording instruction is copied to the battery backup memory 120. Specifically, the event recording unit 112 directly copies all or part of the specified data / information in the recording instruction to the battery backup memory 120 according to a recording instruction for instructing the seventh recording operation to be performed. For example, the operating system or an application program running in the processor 130 may transmit a recording event instruction with a specific message to the event recording controller 110 at a specific timing point to record the specific message in the battery backup memory 120. After receiving the recording event instruction, the event detection unit 111 forwards the recording event instruction to the event recording unit 112 (as a recording instruction for performing the seventh recording operation for the event recording unit) or generates a content containing the recording event instruction Recording instructions with other recording operations are given to the event recording unit 112.

(8) The eighth recording operation copies the information corresponding to the interruption event to the battery backup memory 120. Specifically, the interrupt controller 140 executes an interrupt event according to the detected exceptional event. At this time, in the eighth recording operation, the event recording unit 112 may record information or data of all or part of the instructions of the interruption event to the battery backup memory 120.

It is worth mentioning that, for example, in response to the first specific event that occurs, the manufacturer can set which recording operations the first recording instruction generated by the event detection unit 111 instructs to perform, or according to the above-mentioned multiple recording operations In a specific order.

It should be noted that the event recording unit 112 executes one or more of the above-mentioned recording operations according to the instructions of different recording instructions, and copies related information from different locations. In addition to the above specific events corresponding to the watchdog mechanism, the following continues to describe a variety of other specific events that can be detected by the event detection unit 111 and corresponding detection methods / standards.

In an embodiment, the event detection unit 111 will continuously detect the respective voltage values and voltage change values of the plurality of components of the electronic device 10, wherein the voltage values of the target components in response to detecting the plurality of components are detected. The change value is greater than a predetermined change threshold, and the event detection unit 111 determines that a second specific event among the plurality of specific events occurs. In response to detecting the occurrence of the second specific event, the event detection unit 111 sends a second recording instruction corresponding to the second specific event to the event recording unit. Specifically, when the event detection unit 111 detects that an element of the electronic device 10 has an abnormal voltage change (the event detection unit 111 can set predetermined change thresholds corresponding to different components for different components), the event detection The measurement unit 111 determines that a second specific event occurs. In particular, for a processor error caused by a voltage drop of the processor 130 to a too low voltage, or a crash of the overall electronic device 10, by detecting whether a second specific event occurs, it can be processed in real time. The device 130 records related information / data to the battery backup memory 120 before an error occurs.

In one embodiment, the event detection unit 111 continuously listens to the interrupt controller 140 to determine whether a third specific event occurs. Specifically, when the interrupt controller 140 sends an interrupt event, the event detection unit 111 may receive the interrupt event, and in response to the interrupt event received from the interrupt controller, the event detection unit 111 determines the multiple A third specific event of the specific events occurs. In response to detecting the occurrence of the third specific event, the event detection unit 111 sends a third recording instruction corresponding to the third specific event to the event recording unit 112. The third recording instruction may be used, for example, to instruct the event recording unit 112 to perform the aforementioned eighth recording operation (or perform other recording operations). That is, by detecting whether a third specific event occurs, the event recording controller 110 can record related information to the battery backup memory 120 while the interrupt event occurs.

In one embodiment, the processor 130 sends a record event instruction to the event detection unit 111 according to the executed application program. In response to the received recording event instruction, the event detection unit 111 determines that a fourth specific event of the plurality of specific events occurs. In response to detecting the occurrence of the fourth specific event, the event detection unit sends a fourth recording instruction corresponding to the fourth specific event to the event recording unit 112. That is, the event recording controller 110 provides a function, so that an application program or software executed in the processor 130 can directly send a recording event instruction to record a specific event / specific message to the event recording controller 110, so that The event recording controller 110 records the specific event / specific message to the battery backup memory 120. In addition, the event recording controller 110 can also record more information related to the specific event / specific message to the battery backup memory 120.

In one embodiment, the event detection unit 111 determines whether the first target address of the main memory 150 is written into a specific value. Specifically, the event detection unit 111 may actively monitor whether a specific section (first target address) of the main memory 150 is written with specific data. If yes, in response to determining that the specific value is written to the first target address, the event detection unit 111 determines that a fifth specific event among the plurality of specific events occurs. In response to detecting the occurrence of the fifth specific event, the event detection unit sends a fifth recording instruction corresponding to the fifth specific event to the event recording unit 112 (if the first target address is written If the value of is not the specific value, a fifth specific event is not determined to have occurred). That is, the manufacturer may set the first target address and the corresponding specific value according to a special event or its own needs, and may also set the content of the fifth recording instruction. Then, by detecting whether or not a fifth specific event has occurred (monitoring that this particular aspect of the event has occurred), the event recording controller 110 can record related information to the battery backup memory 120 according to the set fifth recording instruction. It should be noted that, in another embodiment, the fifth recording instruction may be used to indicate that one or more of the above-mentioned recording operations are performed repeatedly and continuously over time, and the effect similar to the recording of the place where the special event occurs (or vice versa, A recording operation that is performed only once can be regarded as a "photographing effect").

In one embodiment, the event detection unit 111 detects whether the second target address of the main memory 150 is accessed. In response to detecting that the second target address is accessed, the event detection unit 111 determines that a sixth specific event among the plurality of specific events occurs. Similar to the above-mentioned method for judging the occurrence of the sixth specific event, the event detection unit 111 will also detect a specific section (second target address) of the main memory 150, but the difference is that the event detection unit 111 only It is necessary to detect whether the second target address is accessed, and it is not necessary to check whether a specific value is written. In response to detecting the occurrence of the sixth specific event, the event detection unit 111 sends a sixth recording instruction corresponding to the sixth specific event to the event recording unit 112. The manufacturer can set the contents of the second target address and the sixth recording instruction. It should be noted that, in another embodiment, the sixth recording instruction may also be used to instruct the above-mentioned one or more recording operations to be repeatedly performed over time, which has achieved a similar effect to recording the location of a special event.

In one embodiment, the event detection unit 111 detects whether an error occurs in the bus 170. In response to detecting an error in the bus 170, the event detection unit 111 determines that a seventh specific event among the specific events occurs. In response to detecting the occurrence of the seventh specific event, the event detection unit 11 sends a seventh recording instruction corresponding to the seventh specific event to the event recording unit 112. That is, the event detection unit 111 can detect whether an error occurs in the bus 170 used to connect all components of the electronic device. That is, by detecting whether a seventh specific event occurs, the event recording controller 110 can record related information to the battery backup memory 120 at the same time as an error occurs in the bus.

In an embodiment, when the one or more specific events among the multiple specific events occur, the processor 130 may fail to operate normally. That is, in this embodiment, when a specific event occurs or multiple specific events occur simultaneously / in succession, the processor 130 may not operate normally (for example, stop operation or abnormal operation). For example, the processor 130 cannot perform operations or processing according to a program originally executed. As another example, the processor 130 itself crashes or dies. In this case, the event recording controller 110 provided by the embodiment of the present invention can automatically detect the occurrence of the one or more specific events without relying on the processor 130, and can automatically generate corresponding recording instructions. To perform a corresponding recording operation, and further record event information corresponding to the one or more specific events without requiring the processor 130.

It should be noted that, in an embodiment, the event detection unit 111 continuously detects whether a plurality of specific events of the plurality of specific events occur (S21), in response to the detected multiple specific events that occur. When an event occurs, a corresponding recording instruction is sent to the event recording unit 112 (S23), so that the event recording unit 112 can perform one or more of the above-mentioned recording operations according to one or more recording instructions without the control of the processor 130. , Thereby achieving automatic recording of event information corresponding to the plurality of specific events that have occurred from one or more of the components of the electronic device 10 indicated by the recording instruction to the battery backup memory 120 ( S25). In other words, the event detecting unit 111 can continuously detect whether one or more of the first to seventh specific events occur (simultaneously or together within a predetermined period), and generate corresponding recording instructions accordingly. The event recording unit 112 is instructed to record related event information.

It is worth mentioning that, in this embodiment, when the available space of the battery backup memory 120 is insufficient, the oldest data stored will be directly overwritten. In addition, in an embodiment, when the available space of the battery backup memory 120 is insufficient, the least important data in the stored data is directly overwritten (the manufacturer may set the importance of the first to seventh specific events described above) .

However, in another embodiment, the data stored in the battery backup memory 120 is not overwritten. Until the stored data is properly read (for example, backed up by the user or related personnel to other reliable storage devices through the software of the corresponding event recording controller) and a specific reset command is issued, it is stored in the battery backup memory 120 data will be cleared. In another embodiment, when the battery backup memory 120 does not have any available space, the event recording controller 110 may issue a warning notification.

In addition, if the electronic device 10 is idle, the event recording controller 110 can also move (back up) the data stored in the battery backup memory 120 from the old to the new to a hidden area (or a non-hidden area) in the storage device of the electronic device 10 ). A space in the storage device for storing the moved data originally stored in the battery backup memory 120 may be limited.

In addition, in an embodiment, the event recording controller 110 may also upload the recorded data to a cloud server set by the manufacturer through a network connection at a specific timing. The specific timing point is, for example, when the electronic device 10 performs maintenance, actively asks a user and obtains permission, and updates a system (or operating system) used by the electronic device 10.

It is worth mentioning that, in an embodiment, the event recording unit 112 may repeatedly perform one or more recording operations performed during a recording period according to a corresponding recording instruction. Specifically, in order to continuously record relevant information / data at the present and subsequent multiple time points after a specific event occurs, the recording instruction generated by the event detection unit 111 may instruct to repeatedly execute a Or multiple recording operations, or setting the execution times and time points of each recording operation to be performed separately. The recording period may be set to one or more time periods or an unlimited time period.

In this embodiment, the data uploaded to the cloud server, backed up in the storage device, or recorded in the battery backup memory 120 can be used to identify the current one or more components of the electronic device 10 when a corresponding specific event occurs. The hardware status, the contents of the register of various components, the various programs executed and related content (the footprint of the program, the contents of the memory, the programs being executed and executed), the data sensed by the sensor, the time, etc. Relevant information to analyze the causes of specific events, which can then resolve these causes of specific events and improve the overall structure of the electronic device 10 and the functions of each component.

In summary, the event recording controller provided by the embodiment of the present invention can automatically respond to the occurrence of a specific event (error event) detected without automatically controlling the processor of the electronic device to which it belongs. Event information corresponding to the specific event that has occurred is recorded from one or more of the multiple components of the electronic device to a battery backup memory, so that the processor can still quickly respond to the situation that the processor cannot operate normally. The information related to a specific event is recorded, and related personnel can use the recorded information to understand and correct the cause of the specific event, thereby improving the overall performance of the electronic device.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

10‧‧‧ electronic device

110‧‧‧Event Record Controller

111‧‧‧Event Detection Unit

112‧‧‧Event Recording Unit

120‧‧‧ battery backup memory

130‧‧‧ processor

140‧‧‧ Interrupt Controller

150‧‧‧ main memory

160, 160 (1), 160 (2) ~ 160 (N) ‧‧‧ Peripherals

170‧‧‧System Bus / Bus

Operation steps of S21, S23, S25 ‧‧‧ event record controller

FIG. 1 is a block diagram illustrating an event recording controller and an electronic device to which the event recording controller belongs according to an embodiment of the present invention. FIG. 2 is an operation flowchart of the event recording controller according to an embodiment of the present invention.

Claims (10)

An event recording controller is applicable to an electronic device, wherein the electronic device includes a plurality of components, wherein the components include a processor, the event recording controller, and a counter, wherein the processor is used to manage the electronic device. The overall operation, wherein the counter is used to send a reset signal to the processor to reset the electronic device, the event recording controller includes: an event detection unit, coupled to the components of the electronic device and independent It operates outside the processor to continuously detect whether one or more of a plurality of specific events occur; and an event recording unit coupled to the event detection unit, wherein the event detection unit is used In response to detecting the occurrence of the one or more specific events in the specific events, sending a recording instruction corresponding to the one or more specific events that occur to the event recording unit, wherein the event recording unit In response to the received recording instruction, without automatically controlling the processor, an event corresponding to the occurrence of the one or more specific events is automatically performed. One or more elements from the plurality of information elements indicating the recording instruction to record a battery backup memory. The event recording controller according to item 1 of the scope of patent application, wherein after the electronic device is powered on, the counter continues to count from a predetermined value, and when the counter receives an update signal from the processor, the counter Re-counting from the predetermined value, wherein when the counter counts to a target value, the counter sends the reset signal to the processor to reset the electronic device, wherein the processor is programmed by the event detection unit to The update signal is sent to the counter after a predetermined period, wherein the predetermined period is less than the time that the counter counts from the predetermined value to the target value, and in the above-mentioned continuous detection whether one or more of the specific events occur In operation, the event detection unit detects whether the counter sends the reset signal, and in response to the event detection unit detecting that the counter sends the reset signal, the event detection unit determines whether the specific event A first specific event occurs, and in response to detecting that the first specific event occurs, the event detection unit A first recording instruction corresponding to the first specific event is sent to the event recording unit. The event recording controller according to item 2 of the scope of patent application, wherein in the operation of continuously detecting whether one or more of the specific events occur, the event detection unit continuously detects each of the components. The voltage value and the voltage change value, in which the voltage value change value of a target element of the elements is detected to be greater than a predetermined change threshold value, and the event detection unit determines a second specific one of the specific events. An event occurs, in response to detecting the occurrence of the second specific event, the event detection unit sends a second recording instruction corresponding to the second specific event to the event recording unit. The event recording controller according to item 3 of the scope of patent application, wherein the components further include an interrupt controller, and in the above-mentioned operation of continuously detecting whether one or more of the specific events occur, the response is reflected. Based on an interrupt event received from the interrupt controller, the event detection unit determines that a third specific event among the specific events occurs, and in response to detecting that the third specific event occurs, the event detection unit A third recording instruction corresponding to the third specific event is sent to the event recording unit. The event recording controller according to item 4 of the patent application scope, wherein the processor executes an application program, and in the above-mentioned operation of continuously detecting whether one or more of the specific events occur, the processor According to the application program, a record event instruction is sent to the event detection unit, wherein in response to the received record event instruction, the event detection unit determines that a fourth specific event among the specific events occurs, and the response is detected When the fourth specific event is detected, the event detection unit sends a fourth recording instruction corresponding to the fourth specific event to the event recording unit. The event recording controller according to item 5 of the scope of patent application, wherein the components include a main memory, and the event is in the operation of continuously detecting whether one or more of the specific events occur. The detection unit determines whether a first target address of the main memory is written into a specific value, and in response to determining that the specific value is written to the first target address, the event detection unit determines the specific A fifth specific event in the event occurs, and in response to detecting that the fifth specific event occurs, the event detection unit sends a fifth recording instruction corresponding to the fifth specific event to the event recording unit. The event recording controller according to item 6 of the scope of patent application, wherein in the operation of continuously detecting whether one or more of the specific events occur, the event detection unit detects the Whether a second target address is accessed or not is determined in response to detecting that the second target address is accessed or not. The event detection unit determines that a sixth specific event among the specific events occurs and the response is detected. When the sixth specific event is detected, the event detection unit sends a sixth recording instruction corresponding to the sixth specific event to the event recording unit. The event recording controller according to item 7 of the scope of the patent application, wherein the electronic device further includes a bus for connecting the components, and during the above-mentioned continuous detection whether one or more of the specific events are detected During the operation, the event detection unit detects whether the bus has an error. In response to detecting that the bus has an error, the event detection unit determines that a seventh specific event among the specific events occurs, In response to detecting the occurrence of the seventh specific event, the event detection unit sends a seventh recording instruction corresponding to the seventh specific event to the event recording unit. An electronic device includes: a processor to manage the overall operation of the electronic device; a counter to send a reset signal to the processor to reset the electronic device; a battery backup memory; and an event A recording controller coupled to the processor and the battery backup memory and operating independently of the processor; wherein the event recording controller is configured to continuously detect whether one or more of a plurality of specific events occur The event recording controller is further configured to automatically detect the occurrence of the one or more specific events among the specific events without automatically controlling the corresponding one or more of the occurrences without the control of the processor. Event information of a plurality of specific events is recorded from a component of the electronic device to the battery backup memory. The electronic device according to item 9 of the scope of patent application, wherein the processor cannot operate normally when the one or more specific events among the specific events occur.