CN104657228B - A kind of system exception processing method and processing device of mobile terminal - Google Patents

Abstract

The present invention is applied to technical field of mobile terminals, there is provided a kind of system exception processing method and processing device of mobile terminal, including：By the subsystem of mobile terminal described in watch dog monitoring with the presence or absence of abnormal；If watch dog monitoring will report the application processor of the mobile terminal extremely to the presence of subsystem exception；The application processor sends instruction of restarting to the subsystem, restarts the subsystem.The present invention can constantly monitor and find the subsystem unusual condition of mobile terminal in real time, and realize restarting for the subsystem automatically, ensure that the promptness of mobile terminal system abnormal conditions processing.

Description

System exception handling method and device for mobile terminal

technical field

The invention belongs to the technical field of mobile terminals, and in particular relates to a method and device for handling system exceptions of a mobile terminal.

Background technique

With the development of embedded technology, the functions of mobile terminals based on embedded systems are becoming more and more powerful. It is designed as a distributed architecture composed of multi-processors. The corresponding embedded systems are also becoming larger and more complex, and at the same time there are A wide variety of subsystems.

During the operation of the mobile terminal, there may be abnormalities in a certain subsystem, for example, the communication subsystem has no service, the sound subsystem has no sound, or the sensor subsystem fails, etc. Usually, system-level problems cannot be resolved by restoring parameters. The repair can only be solved by restarting the system. However, users are often unaware of the failure of the subsystem, especially when the mobile terminal is in the state of off-screen standby, it is impossible to know the abnormality of the subsystem, which leads to the failure of the mobile terminal. The abnormal situation of the terminal system is not handled in time, which affects the normal use of the mobile terminal.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a method and device for handling system abnormalities of mobile terminals, aiming at solving the current problem of untimely handling of system abnormalities of mobile terminals.

The embodiment of the present invention is achieved in this way, a system exception handling method of a mobile terminal, comprising:

Monitoring whether there is an abnormality in the subsystem of the mobile terminal through a watchdog;

If the watchdog monitors that there is an abnormality in a subsystem, report the abnormality to the application processor of the mobile terminal;

The application processor sends a restart instruction to the subsystem to restart the subsystem.

Another object of the embodiments of the present invention is to provide a system exception handling device for a mobile terminal, including:

A monitoring unit, configured to monitor whether there is an abnormality in the subsystem of the mobile terminal through a watchdog;

The reporting unit is used to report the abnormality to the application processor of the mobile terminal if the watchdog monitors that there is an abnormality in the subsystem;

The restart unit is used for the application processor to send a restart instruction to the subsystem to restart the subsystem.

The embodiments of the present invention can monitor and discover abnormal conditions of the subsystems of the mobile terminal in real time at all times, and automatically restart the subsystems, thereby ensuring the timeliness of handling abnormal conditions of the mobile terminal system.

Description of drawings

Fig. 1 is the implementation flow diagram of the system exception processing method of the mobile terminal provided by the embodiment of the present invention;

FIG. 2 is a specific implementation flowchart of the system exception handling method S101 of the mobile terminal provided by the embodiment of the present invention;

FIG. 3 is a flow chart of implementing subsystem restart of the system exception handling method of the mobile terminal provided by the embodiment of the present invention;

Fig. 4 is a structural block diagram of an apparatus for handling system exceptions of a mobile terminal according to an embodiment of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

In the embodiment of the present invention, the mobile terminal refers to computer equipment that can be used on the move, including but not limited to mobile phones, notebooks, tablet computers, POS machines and even vehicle-mounted computers. The subsystems of the mobile terminal include but not limited to communication (modem) subsystems, sound (audio) subsystems or sensor (sensor) subsystems.

Fig. 1 shows the implementation process of the system abnormality handling method of the mobile terminal provided by the embodiment of the present invention, which is described in detail as follows:

In S101, a watchdog is used to monitor whether a subsystem of the mobile terminal is abnormal.

Described watchdog (watchdog timer) is a timer circuit, generally has an input, and in the present embodiment, in each subsystem of mobile terminal, such input is set respectively, promptly feeds the dog (kicking the dog or service the dog) module, the input is controlled by the main program or main process of the subsystem, and a signal is output to the dog feeding terminal every once in a while to clear the watchdog. If the dog is not fed beyond the specified time, the watchdog If timeout occurs, it will be determined that the corresponding subsystem is abnormal.

As shown in Figure 2, S101 is specifically:

In S201, a process in the mobile terminal subsystem outputs a signal to a watchdog at regular intervals.

In S202, when the watchdog does not receive a signal from the subsystem within a preset time, it is determined that the subsystem is abnormal.

Usually, if the subsystem runs abnormally, the main program or main process of the subsystem is mostly in the state of no response, endless loop or running away, and cannot regularly output signals to the watchdog. Therefore, when the watchdog does not regularly receive signals from When the main program or main process of a certain subsystem receives an input signal, it is determined that the subsystem is abnormal.

In S102, if the watchdog monitors that there is an abnormality in a subsystem, report the abnormality to the application processor of the mobile terminal.

When the watchdog determines that there is an abnormality in a subsystem, it reports the abnormality to the application processor (Application Processor, AP) of the mobile terminal, so that the application processor knows which subsystem of the mobile terminal has an abnormality.

Preferably, reporting the exception to the application processor of the mobile terminal in S102 includes:

Pulling down the corresponding general purpose input/output (General Purpose Input/Output, GPIO) hardware interrupt pin of the subsystem, so as to report the exception to the application processor of the mobile terminal.

Each subsystem corresponds to a GPIO hardware interrupt pin. When the subsystem is running normally, the watchdog keeps the corresponding pin of the subsystem at high level, and once the watchdog determines that the subsystem is abnormal, it will The pin corresponding to the subsystem is pulled down to a low level. Once the application processor detects that a pin of the GPIO hardware interrupt changes from a high level to a low level, it can know that the subsystem corresponding to the pin is abnormal.

In this embodiment, the advantage of notifying the application processor through the GPIO hardware interrupt is that the GPIO hardware interrupt can generate an interrupt at any time, regardless of whether the mobile terminal is currently in the off-screen standby state, thereby ensuring the timeliness of the exception handling of the subsystem .

In S103, the application processor sends a restart instruction to the subsystem to restart the subsystem.

After learning the abnormal subsystem, the application processor sends a restart instruction to the subsystem to restart the subsystem. As shown in Figure 3, the subsystem restart process is as follows:

S301, performing power-off processing on the subsystem;

S302, performing power-on processing on the subsystem;

S303, the subsystem loads firmware and initializes, and restarts.

The above restarting process may be the same as the process of starting the subsystem when the mobile terminal system is restarted.

The embodiments of the present invention can monitor and discover abnormal conditions of the subsystems of the mobile terminal in real time at all times, and automatically restart the subsystems, thereby ensuring the timeliness of handling abnormal conditions of the mobile terminal system.

For example, when the communication subsystem of the mobile phone is in the standby state with the screen off, the main program of the modem is automatically closed, and the main program cannot regularly input signals to the watchdog. If the watchdog times out, the abnormal situation will be reported to the GPIO hardware interrupt The application processor, the application processor is awakened to process the reported interrupt data, and sends a reset command to the communication subsystem. After receiving the reset command, the communication subsystem performs power-off-power-on-loading firmware-initialization processing, and completes the restart. The processing of the abnormal situation of the communication subsystem is completed in time when the screen of the mobile terminal is turned off, and the occurrence of situations such as missed calls and text messages are avoided.

Corresponding to the method for handling system exceptions of the mobile terminal described in the above embodiments, Fig. 4 shows a structural block diagram of the apparatus for handling system exceptions of the mobile terminal provided by the embodiment of the present invention. example related part.

Referring to Figure 4, the device includes:

The monitoring unit 41 monitors whether there is any abnormality in the subsystem of the mobile terminal through a watchdog;

The reporting unit 42, if the watchdog monitors that there is an abnormality in the subsystem, report the abnormality to the application processor of the mobile terminal;

A restart unit 43, wherein the application processor sends a restart instruction to the subsystem to restart the subsystem.

Optionally, the reporting unit 42 is specifically configured to:

Pulling down the GPIO hardware interrupt pin corresponding to the subsystem, so as to report the exception to the application processor of the mobile terminal.

Optionally, the monitoring unit 41 includes:

The output subunit, the processes in the mobile terminal subsystem regularly output signals to the watchdog;

The judging sub-unit judges that the subsystem is abnormal when the watchdog does not receive a signal from the subsystem within a preset time.

Optionally, the restart unit 43 includes:

Power down the electronic unit, and power down the subsystem;

Power on the electronic unit, and power on the subsystem;

Initialize the subunit, the subsystem loads the firmware and initializes, and completes the restart.

Optionally, the subsystems include communication subsystems, sound subsystems or sensor subsystems.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (6)

1. A system exception handling method of a mobile terminal, characterized in that, comprising: Whether the subsystem of the mobile terminal is monitored by the watchdog is abnormal, specifically: each subsystem of the mobile terminal corresponds to a pin of a general-purpose input and output GPIO hardware interrupt, and when the subsystem is operating normally, the watchdog keeps The pin corresponding to the subsystem is high level; the process in the subsystem of the mobile terminal regularly outputs signals to the watchdog; when the watchdog does not receive a signal from the subsystem within the preset time, it is determined There is an exception in the subsystem; If the watchdog monitors that there is an exception in a subsystem, pull down the pin of the GPIO hardware interrupt corresponding to the subsystem to report the exception to the application processor of the mobile terminal, so that the application processor is notified of the mobile terminal. Which subsystem of the terminal is abnormal; The application processor sends a restart command to the abnormal subsystem to restart the abnormal subsystem, so that the mobile terminal can still complete the abnormal processing of the subsystem in time when the screen is off and on standby. 2. The method according to claim 1, wherein the application processor sends a restart instruction to the subsystem, and restarting the subsystem comprises: Perform power-down processing on the subsystem; Power on the subsystem; The subsystem loads the firmware and initializes to complete the reboot. 3. The method according to claim 1 or 2, wherein the subsystem comprises a communication subsystem, an acoustic subsystem or a sensor subsystem. 4. A system exception handling device for a mobile terminal, characterized in that it comprises: The monitoring unit is used to monitor whether the subsystems of the mobile terminal are abnormal through the watchdog. The specific monitoring method is: each subsystem corresponds to a GPIO hardware interrupt pin. When the subsystem is running normally, the watchdog The dog keeps the corresponding pin of the subsystem at high level; The output subunit is used for the processes in the mobile terminal subsystem to regularly output signals to the watchdog; A judging subunit, used to judge that the subsystem is abnormal when the watchdog does not receive a signal from the subsystem within a preset time; The reporting unit is used to pull down the pin of the GPIO hardware interrupt corresponding to the subsystem if the watchdog monitors that there is an exception in the subsystem, so as to report the exception to the application processor of the mobile terminal; The restart unit is used for the application processor to send a restart command to the abnormal subsystem to restart the abnormal subsystem, so that the mobile terminal can still complete the abnormal processing of the subsystem in time when the screen is off and on standby. 5. The device according to claim 4, wherein the restart unit comprises: An electronic unit for power-down processing of the subsystem; The electronic unit is used to perform power-on processing on the subsystem; The initialization subunit is used to load firmware and initialize the subsystem, and complete the restart. 6. The device according to claim 4 or 5, wherein the subsystem comprises a communication subsystem, a sound subsystem or a sensor subsystem.