CN113596867B - Control method and device for 4g module based on FreeRTOS system - Google Patents
Control method and device for 4g module based on FreeRTOS system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5027—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/52—Program synchronisation; Mutual exclusion, e.g. by means of semaphores
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention discloses a control method and a device for a 4g module based on FreeRTOS system, wherein the method comprises the following steps: after the 4g module is controlled to be electrified, selecting which group of instruction sending flows are executed according to the 4g function demand signals; transmitting configuration information of an instruction to be executed according to the selected instruction transmission flow to a transmission and reception processor through a scheduler; executing the instruction by the transmitting and receiving processor, if the instruction is successfully executed, transmitting a switching instruction signal to the scheduler, switching the configuration information of the next instruction to be executed by the scheduler according to the instruction transmitting flow, transmitting the configuration information to the transmitting and receiving processor, and restarting the 4g module if the instruction is abnormally executed; after the last instruction is executed, the 4g module is controlled to be powered down, the threads are crossed out, and the waiting signal state is re-entered. By the method, the control of the 4g module can be more flexible and stable.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a 4g module control method and device based on FreeRTOS systems.
Background
The control of the current 4g module has the following characteristics:
1. because the 4g module needs a certain time to inquire the connection network, the speed of receiving feedback data by a certain instruction (such as inquiring the network state, connecting a tcp end and the like) sent by the MCU to the 4g module is slower.
2. To complete a task (obtain time, report information to the server, etc.), the MCU needs to send instructions in sequence, and the different task instructions are sent in different combinations.
3. The time-out waiting time required for each instruction is different, and when a time-out error occurs, the next operation to be executed needs to be flexibly determined according to the situation.
4. The power consumption is high. The power consumption can reach 40ma when in standby, and can reach 150ma when searching signals and after connection is established.
Disclosure of Invention
Aiming at the technical problems of slower feedback and higher power consumption in the control of the 4g module, the invention provides a method and a device for controlling the 4g module based on FreeRTOS systems.
In a first aspect, an embodiment of the present application provides a 4g module control method based on FreeRTOS systems, including:
a signal receiving step: after the 4g module is controlled to be electrified, selecting which group of instruction sending flows are executed according to the 4g function demand signals;
configuration information sending step: transmitting configuration information of an instruction to be executed according to the selected instruction transmission flow to a transmission and reception processor through a scheduler;
An instruction switching step: executing the instruction through the transmitting and receiving processor, if the instruction is successfully executed, transmitting a switching instruction signal to the scheduler, switching the configuration information of the next instruction to be executed according to the instruction transmitting flow by the scheduler, transmitting the configuration information to the transmitting and receiving processor, and restarting the 4g module if the instruction is abnormally executed;
4g module powering down: and after the last instruction is executed, controlling the 4g module to be powered down, and intersecting the thread to enter a waiting signal state again.
The 4g module control method further comprises the following steps:
Information presetting: and presetting specific instruction sending flows and configuration information of the instructions, which correspond to the 4g function demand signals respectively, wherein the configuration information comprises a sending processing function, a receiving processing function, a maximum retry number and a waiting timeout time.
The 4g module control method, wherein the instruction switching step includes:
The transmission processing function performs the steps of: executing the sending processing function corresponding to the instruction, and sending the instruction;
waiting: waiting for data to return and handing out the thread;
the reception processing function performs the steps of: and if the returned data is received, executing the receiving processing function corresponding to the instruction.
The 4g module control method, wherein the waiting step includes: and restarting the 4g module if the waiting time exceeds the waiting timeout time corresponding to the instruction and the retry number exceeds the maximum retry number corresponding to the instruction.
The 4g module control method, wherein the waiting step includes: and opening a receiver and a timer, executing FreeRTOS signal queue waiting functions to wait for data to return, and restarting the 4g module if the timer reaches a target value and the retry number exceeds the maximum retry number corresponding to the instruction.
The 4g module control method, wherein the receiving processing function executing step includes:
When the returned data is incomplete, continuing waiting;
when the returned data is not ideal data or needs to be acquired again due to signal problems, the transmission processing function is executed again, and the 4g module is restarted after the retry number reaches the maximum retry number;
And when the returned data is ideal data, sending the switching instruction signal to a scheduler.
The 4g module control method, wherein when the returned data is incomplete, the FreeRTOS signal queue waiting function is continuously executed.
In a second aspect, an embodiment of the present application provides a 4g module control device based on FreeRTOS systems, including:
A signal receiving unit: after the 4g module is controlled to be electrified, selecting which group of instruction sending flows are executed according to the 4g function demand signals;
configuration information transmitting unit: transmitting configuration information of an instruction to be executed according to the selected instruction transmission flow to a transmission and reception processor through a scheduler;
an instruction switching unit: executing the instruction through the transmitting and receiving processor, if the instruction is successfully executed, transmitting a switching instruction signal to the scheduler, switching the configuration information of the next instruction to be executed according to the instruction transmitting flow by the scheduler, transmitting the configuration information to the transmitting and receiving processor, and restarting the 4g module if the instruction is abnormally executed;
4g module power-down unit: and after the last instruction is executed, controlling the 4g module to be powered down, and intersecting the thread to enter a waiting signal state again.
The 4g module control device, wherein the device further comprises:
An information presetting unit: and presetting specific instruction sending flows and configuration information of the instructions, which correspond to the 4g function demand signals respectively, wherein the configuration information comprises a sending processing function, a receiving processing function, a maximum retry number and a waiting timeout time.
The 4g module control device, wherein the instruction switching unit includes:
the transmission processing function execution module: executing the sending processing function corresponding to the instruction, and sending the instruction;
And (3) a waiting module: waiting for data to return and handing out the thread;
The receiving processing function execution module: and if the returned data is received, executing the receiving processing function corresponding to the instruction.
Compared with the prior art, the invention has the advantages and positive effects that:
1. The invention is based on FreeRTOS task blocking mechanism and thread priority switching mechanism, can realize that 4G task obtains main thread at any time and gives out thread to execute other task while waiting, and can realize the control of 4G module only needing very small system resource.
2. The method can flexibly edit the instruction sequence to be executed for realizing a certain function (such as acquisition time, data transmission through TCP, and the like), and the transmission and reception processing functions and parameters of each instruction.
3. When the abnormal condition occurs to the instruction, the method can flexibly adopt measures such as waiting, retry, module restarting and the like to solve the abnormal condition.
4. The system can be powered on for 4g only when needed, and the power supply is cut off after the task is completed to enable the module to enter a complete power-free state, so that the endurance time of the module can be greatly prolonged when the module is used on battery-powered equipment.
The technical effect can make the control of the 4g module more flexible and stable for the developer in practical application.
Drawings
FIG. 1 is a schematic diagram of steps of a 4g module control method based on FreeRTOS system provided by the invention;
FIG. 2 is a flowchart based on step S4 in FIG. 1 according to the present invention;
FIG. 3 is a schematic flow chart of an embodiment of a 4g module control method based on FreeRTOS systems provided by the present invention;
FIG. 4 is a flow chart of the instructions executed by the transceiver processor according to the present invention;
fig. 5 is a frame diagram of a 4g module control device based on FreeRTOS system provided by the invention.
Wherein, the reference numerals are as follows:
1. An information presetting unit; 2. a signal receiving unit; 3. a configuration information transmitting unit; 4. an instruction switching unit; 41. a transmission processing function execution module; 42. a waiting module; 43. a receiving processing function executing module; 5. 4g module power-down unit.
Detailed Description
The present application will be described and illustrated with reference to the accompanying drawings and examples in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. All other embodiments, which can be made by a person of ordinary skill in the art based on the embodiments provided by the present application without making any inventive effort, are intended to fall within the scope of the present application.
It is apparent that the drawings in the following description are only some examples or embodiments of the present application, and it is possible for those of ordinary skill in the art to apply the present application to other similar situations according to these drawings without inventive effort. Moreover, it should be appreciated that while such a development effort might be complex and lengthy, it would nevertheless be a routine undertaking of design, fabrication, or manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as having the benefit of this disclosure.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly and implicitly understood by those of ordinary skill in the art that the described embodiments of the application can be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "a," "an," "the," and similar referents in the context of the application are not to be construed as limiting the quantity, but rather as singular or plural. The terms "comprising," "including," "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to only those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in connection with the present application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein means two or more. "and/or" describes an association relationship of an association object, meaning that there may be three relationships, e.g., "a and/or B" may mean: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The terms "first," "second," "third," and the like, as used herein, are merely distinguishing between similar objects and not representing a particular ordering of objects.
The present invention will be described in detail below with reference to the embodiments shown in the drawings, but it should be understood that the embodiments are not limited to the present invention, and functional, method, or structural equivalents and alternatives according to the embodiments are within the scope of protection of the present invention by those skilled in the art.
Before explaining the various embodiments of the invention in detail, the core inventive concepts of the invention are summarized and described in detail by the following examples.
The invention provides a method for realizing the call of a sending processing function and a receiving processing function by using a sending and receiving processor through presetting an instruction flow and configuration information, and flexibly taking measures such as waiting, retrying, restarting a module and the like when an abnormal condition occurs to the instruction, thereby realizing flexible and stable control of the 4g module.
Embodiment one:
Fig. 1 is a schematic step diagram of a 4g module control method based on FreeRTOS system provided by the invention. As shown in fig. 1, this embodiment discloses a specific implementation of a 4g module control method (hereinafter referred to as "method") based on FreeRTOS systems.
Specifically, the method disclosed in this embodiment mainly includes the following steps:
Step S1: specific instruction sending flows and configuration information of instructions corresponding to the 4g function demand signals are preset, wherein the configuration information comprises a sending processing function, a receiving processing function, maximum retry times and waiting timeout time.
Specifically, before running, specific instruction sending processes of functions (such as acquisition time, sending data through TCP, etc.) and configuration information of instructions, including a sending processing function, a receiving processing function, a maximum retry number, and waiting for timeout time, must be preset. The instruction sequence to be executed for realizing a certain function and the sending and receiving processing functions and parameters of each instruction can be flexibly edited.
Step S2: after the 4g module is controlled to be electrified, selecting which group of instruction sending flows are executed according to the 4g function demand signals;
Specifically, since the 4g module is located as a peripheral module and consumes a large amount of power, the module is powered down in an idle condition and the driver always belongs to a suspend waiting signal state. When the driver receives a 4g function demand signal from the system, the whole process starts to operate. The driver will control the 4g module to power up and determine which set of instruction issue flows to execute based on the received 4g function demand signal.
Step S3: transmitting configuration information of an instruction to be executed according to the selected instruction transmission flow to a transmission and reception processor through a scheduler;
Step S4: executing the instruction through the transmitting and receiving processor, if the instruction is successfully executed, transmitting a switching instruction signal to the scheduler, switching the configuration information of the next instruction to be executed according to the instruction transmitting flow by the scheduler, transmitting the configuration information to the transmitting and receiving processor, and restarting the 4g module if the instruction is abnormally executed;
Specifically, as shown in fig. 2, step S4 includes:
Step S41: executing the sending processing function corresponding to the instruction, and sending the instruction;
step S42: waiting for data to return and handing out the thread;
Specifically, the receiver and the timer are opened, a FreeRTOS signal queue waiting function is executed to wait for data to return, and if the waiting time exceeds the waiting timeout time corresponding to the instruction and the retry number exceeds the maximum retry number corresponding to the instruction, the 4g module is restarted.
Step S43: and if the returned data is received, executing the receiving processing function corresponding to the instruction.
Specifically, when the returned data is incomplete, continuing to execute the FreeRTOS signal queue waiting function, and continuing to wait;
when the returned data is not ideal data or needs to be acquired again due to signal problems, the transmission processing function is executed again, and the 4g module is restarted after the retry number reaches the maximum retry number;
And when the returned data is ideal data, sending the switching instruction signal to a scheduler.
Therefore, when the abnormal condition occurs to the instruction, measures such as waiting, retry, module restarting and the like can be flexibly adopted to handle the abnormal condition.
Step S5: and after the last instruction is executed, controlling the 4g module to be powered down, and intersecting the thread to enter a waiting signal state again.
Specifically, the 4g module is electrified and started only when the system is needed, and power supply is cut off after the task is completed, so that the 4g module enters a complete power-free state. This would greatly extend the duration of a battery-powered device.
Referring to fig. 3 to 4, the following application flow of the method is specifically described:
the main technical line flow is shown in fig. 3, and firstly, the flow is a task for controlling a 4g module in the whole FreeRTOS system, so that after the initialization of the MCU, the task needs to be created and an infinite loop is entered. The beginning of the loop is blocked by a FreeRTOS signal queue and execution can continue downward only after receiving a signal to this queue.
Before running, specific instruction sending flow of some functions and configuration of instructions, including sending processing functions, receiving processing functions, maximum retry times and waiting time-out time, must be preset.
Because the positioning of the 4g module is a peripheral module and the power consumption is larger, the module is in a power-down power-off state under the idle condition, and the drive always belongs to a suspension waiting signal state. When the driver receives a 4g function demand signal from the system, the whole process starts to operate.
The driver first powers up the control 4g module and determines which set of instruction-sending flows to execute based on the received signals. Then the program enters a loop, the scheduler switches the configuration information of the instruction to be executed according to the flow, and the information is transmitted to the sending and receiving processor, and the main work of the processor is to execute the sending processing function, wait for data return, execute the receiving processing function, process waiting time-out and the like. The number of the processor outlets is two, one is that the instruction is smoothly sent and returned, the next instruction is directly executed, the second is that an abnormal condition occurs, and the restarting module restarts the flow.
The processing flow of the transceiver processor is shown in fig. 4, and the processing flow is used as the carrier of the sending and receiving functions of a single instruction and is used for processing abnormal situations.
When the task scheduler of the main flow switches the parameters of the instruction and runs to the transceiver, the flow starts to run.
1) Executing the sending processing function corresponding to the instruction, sending the instruction, then starting the timer of the receiver and the RTOS to wait for the return data, and placing a FreeRTOS signal queue waiting function to block the task (cross threads).
2) Waiting for data to return has two consequences, wait for timeout and receive data to return, respectively.
When waiting for timeout (the timer reaches the target value first), whether the instruction retry number exceeds the maximum retry number set in the parameter is judged first, if yes, the module operation is restarted after the instruction retry number is directly operated in the main flow, and if not, the transmission processing function is executed again.
When data is received back (data is received first), the data is passed to the return processing function, and there are three cases:
① When the returned data is not complete, then the signal queue wait function will continue to execute FreeRTOS, i.e., continue to wait;
② When the returned data is not ideal data or the signal is not good and needs to be re-acquired, the instruction is retried, and if the number of retries reaches the maximum limit, the module is restarted;
③ When the returned data is ideal data, the operation dispatcher is informed of the switching instruction and parameters thereof, and the next operation is carried out.
Through the two steps, the whole processing flow of one instruction is finished.
Finally, when the operation runs to the last step, the function is completed satisfactorily, and the 4g module needs to be controlled to be powered down, and the threads are handed out to enter a waiting signal state again.
The framework is based on a FreeRTOS task blocking mechanism and a thread priority switching mechanism, and can realize that a 4G task can acquire a main thread at any time and can give out threads to execute other tasks when waiting. Control of the 4g module can be achieved with only a small system resource.
Embodiment two:
in combination with the method for controlling a 4g module based on FreeRTOS system disclosed in the first embodiment, this embodiment discloses a specific implementation example of a 4g module control device (hereinafter referred to as "device") based on FreeRTOS system.
Referring to fig. 5, the apparatus includes:
Information presetting unit 1: and presetting specific instruction sending flows and configuration information of the instructions, which correspond to the 4g function demand signals respectively, wherein the configuration information comprises a sending processing function, a receiving processing function, a maximum retry number and a waiting timeout time.
The signal receiving unit 2: after the 4g module is controlled to be electrified, selecting which group of instruction sending flows are executed according to the 4g function demand signals;
configuration information transmitting unit 3: transmitting configuration information of an instruction to be executed according to the selected instruction transmission flow to a transmission and reception processor through a scheduler;
Instruction switching unit 4: executing the instruction through the transmitting and receiving processor, if the instruction is successfully executed, transmitting a switching instruction signal to the scheduler, switching the configuration information of the next instruction to be executed according to the instruction transmitting flow by the scheduler, transmitting the configuration information to the transmitting and receiving processor, and restarting the 4g module if the instruction is abnormally executed;
4g module power-down unit 5: and after the last instruction is executed, controlling the 4g module to be powered down, and intersecting the thread to enter a waiting signal state again.
Specifically, the instruction switching unit 4 includes:
The transmission processing function execution module 41: executing the sending processing function corresponding to the instruction, and sending the instruction;
a waiting module 42: waiting for data to return and handing out the thread;
The reception processing function execution module 43: and if the returned data is received, executing the receiving processing function corresponding to the instruction.
The technical scheme of the present embodiment, which is the same as the rest of the 4g module control device based on FreeRTOS system and the 4g module control method based on FreeRTOS system disclosed in embodiment one, is described in reference to embodiment one, and is not repeated here.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (6)
1. A method for controlling a 4g module based on FreeRTOS systems, comprising:
A signal receiving step: when a 4g function demand signal sent by a system is received, after the 4g module is powered on, selecting which group of instruction sending flows are executed according to the 4g function demand signal;
configuration information sending step: transmitting configuration information of an instruction to be executed according to the selected instruction transmission flow to a transmission and reception processor through a scheduler;
An instruction switching step: executing the instruction through the transmitting and receiving processor, if the instruction is successfully executed, transmitting a switching instruction signal to the scheduler, switching the configuration information of the next instruction to be executed according to the instruction transmitting flow by the scheduler, transmitting the configuration information to the transmitting and receiving processor, and restarting the 4g module if the instruction is abnormally executed;
4g module powering down: after the last instruction is executed, controlling the 4g module to be powered down, and intersecting the threads to enter a waiting signal state again;
the instruction switching step comprises the following steps:
The transmission processing function performs the steps of: executing the sending processing function corresponding to the instruction, and sending the instruction;
Waiting: waiting for data to return and handing off the thread, wherein the waiting step comprises: opening a receiver and a timer and executing FreeRTOS signal queue waiting functions to wait for data to return, and restarting the 4g module if the timer reaches a target value and the retry number exceeds the maximum retry number corresponding to the instruction;
the reception processing function performs the steps of: and if the returned data is received, executing the receiving processing function corresponding to the instruction.
2. The 4g module control method of claim 1, further comprising:
Information presetting: and presetting specific instruction sending flows and configuration information of the instructions, which correspond to the 4g function demand signals respectively, wherein the configuration information comprises a sending processing function, a receiving processing function, a maximum retry number and a waiting timeout time.
3. The 4g module control method according to claim 2, wherein the reception processing function executing step includes:
When the returned data is incomplete, continuing waiting;
when the returned data is not ideal data or needs to be acquired again due to signal problems, the transmission processing function is executed again, and the 4g module is restarted after the retry number reaches the maximum retry number;
And when the returned data is ideal data, sending the switching instruction signal to a scheduler.
4. A 4g module control method according to claim 3, wherein the FreeRTOS signal queue wait function is continued when the returned data is incomplete.
5. A FreeRTOS system-based 4g module control device, comprising:
a signal receiving unit: when a 4g function demand signal sent by a system is received, after the 4g module is powered on, selecting which group of instruction sending flows are executed according to the 4g function demand signal;
configuration information transmitting unit: transmitting configuration information of an instruction to be executed according to the selected instruction transmission flow to a transmission and reception processor through a scheduler;
an instruction switching unit: executing the instruction through the transmitting and receiving processor, if the instruction is successfully executed, transmitting a switching instruction signal to the scheduler, switching the configuration information of the next instruction to be executed according to the instruction transmitting flow by the scheduler, transmitting the configuration information to the transmitting and receiving processor, and restarting the 4g module if the instruction is abnormally executed;
4g module power-down unit: after the last instruction is executed, controlling the 4g module to be powered down, and intersecting the threads to enter a waiting signal state again;
wherein the instruction switching unit includes:
the transmission processing function execution module: executing the sending processing function corresponding to the instruction, and sending the instruction;
and (3) a waiting module: waiting for data to return and handing off the thread, including: opening a receiver and a timer and executing FreeRTOS signal queue waiting functions to wait for data to return, and restarting the 4g module if the timer reaches a target value and the retry number exceeds the maximum retry number corresponding to the instruction;
The receiving processing function execution module: and if the returned data is received, executing the receiving processing function corresponding to the instruction.
6. The 4g module control device of claim 5, further comprising:
An information presetting unit: and presetting specific instruction sending flows and configuration information of the instructions, which correspond to the 4g function demand signals respectively, wherein the configuration information comprises a sending processing function, a receiving processing function, a maximum retry number and a waiting timeout time.
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