CN114489494A - Storage method for storing configuration parameters by external memory and related equipment - Google Patents
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Abstract
The embodiment of the application provides a storage method for storing configuration parameters by an external memory and related equipment, comprising the following steps: reading a configuration parameter index table from an internal memory, wherein the configuration parameter index table defines a value range of each data item in a plurality of data items and a target bit number required for expressing a value in the value range; performing the same operation as the first data item for each of a plurality of data items in the internal memory: determining a target number of bits required for a first storage value of a first data item according to the configuration parameter index table, wherein the first data item is any one of a plurality of data items in the internal memory; storing a first stored value of the first data item in an external memory according to the target number of bits. By the method and the device, the stored data can be stored into the external memory according to the required target digit, and the storage efficiency of the external memory is improved.
Description
Technical Field
The present application relates to the field of computer science, and in particular, to a method and related device for storing configuration parameters in an external memory.
Background
With the development of computer science and technology, many configuration parameters exist in different components in related products, different configuration parameters need to be set according to different application scenes or characteristic differences of product components, and since an internal read-only memory needs to erase the configuration parameters set before modifying the configuration parameters, the configuration is usually stored in an external memory.
Disclosure of Invention
The embodiment of the application discloses a storage method and related equipment for storing configuration parameters by an external memory, which can store stored data into the external memory according to required target digits and save the storage space of the external memory.
In a first aspect, an embodiment of the present application provides a method for storing configuration parameters in an external memory, where the method includes:
reading a configuration parameter index table from an internal memory, wherein the configuration parameter index table defines a value range of each data item in a plurality of data items and a target bit number required for expressing a value in the value range;
performing the same operation as the first data item for each of a plurality of data items in the internal memory: determining a target number of bits required for a first storage value of a first data item according to the configuration parameter index table, wherein the first data item is any one of a plurality of data items in the internal memory;
storing a first stored value of the first data item in an external memory according to the target number of bits.
In the method, the target digit required by each data item in the plurality of data items is determined through the configuration parameter index table, then the target digit required by each data item is stored in the external memory, instead of determining the digit of each data item through the storage space of the structure body of each data item, then each data item is written into the external memory in the form of the structure body, namely, the size of the storage space occupied by each data item is accurate to the target digit through the configuration parameter index table, and the values stored in the external memory are stored continuously according to the target digits, so that the stored data is stored in the external memory according to the required target digits, the storage space in the external memory is saved, and the storage efficiency of the external memory is improved.
In a possible implementation of the first aspect, before the reading the configuration parameter index table from the internal memory, the method further includes:
configuring a parameter index and a parameter attribute according to the type of each data item;
and establishing a configuration parameter index table related to data definition according to the configuration parameter index and the parameter attribute, wherein the configuration parameter index table is stored in the internal memory.
In the above method, a parameter index of each data item is configured, that is, a specific name and a function of the data item are listed in an enumerated form; the method includes configuring parameter attributes, that is, configuring parameters such as a minimum value, a maximum value, an offset address, a target digit, a first stored value (i.e., a default value) of the data item, and then establishing a configuration parameter index table related to data definition by using a parameter index and the parameter attributes.
In yet another possible implementation manner of the first aspect, the corresponding values of the parameter attributes are obtained, and it should be noted that the parameter attributes are determined according to the parameter index of each data item, and the corresponding values of the parameter attributes corresponding to different data items are different, that is, the corresponding values of the parameter attributes, that is, the specific values of the parameters such as the minimum value, the maximum value, the offset address, the target digit, the first storage value (default value) of the data item are obtained.
In yet another possible implementation manner of the first aspect, after the storing the value of the first data item in the external memory according to the target number of bits, the method further includes:
if a second storage value exists, acquiring the second storage value;
judging whether the second storage value is in the range of the parameter value defined by the data in the configuration parameter index table;
and if the data is in the range of the parameter value defined by the data, storing the second storage value into the external memory according to the index table of the configuration parameter.
In the above method, each data item may have a first stored value (which may be understood as a default stored value of the configuration parameter) in the index table, and if the data item has a second stored value (which may be understood as a new value of the configuration parameter), the processor obtains a maximum value and a minimum value in the data definition parameter value through the configuration parameter index table stored in the memory, determines whether the second stored value has a range between the maximum value and the minimum value, and if the second stored value has the range, the processor calls the configuration parameter index table in the internal memory to obtain a target number of bits in the data definition parameter value, and stores the second stored value in the external memory according to the required target number of bits. That is, each time the processor is powered on, the processor executes the processing action of calling the configuration parameter index table and comparing the second storage value in the processor, the second storage value is not stored in the internal memory, the data in the internal memory can be guaranteed not to be updated, the internal memory is prevented from being erased, and the like, and the second storage value of the required target digit of the data item is written into the external memory, so that the second storage value can be guaranteed to be stored in the external memory according to the required target digit, and the efficiency of data storage of the external memory is improved.
In yet another possible implementation manner of the first aspect, the storing the first stored value of the first data item in the external memory according to the target number of bits includes:
determining a starting storage location of the first storage value in the external memory according to an offset address corresponding to the first data item in the configuration parameter index table, wherein each data item corresponds to a respective offset address in the external memory;
storing a first storage value of the first data item into the external memory starting from the starting storage location and starting from the target number of bits as a storage length.
In the method, the parameter attribute related to the data definition in the configuration parameter index table further includes an offset address and a storage length of each data item, that is, a plurality of data items are stored in the internal memory, and the locations of the plurality of data items stored in the external memory are queried by the offset address, so that the processor can find the parameter index, the parameter attribute, the corresponding value of the parameter attribute, and the like of each data item when calling the parameter index table of the internal memory, determine the starting location of the storage value of the data item stored in the external memory according to the offset address of the parameter attribute of the data item, and determine the storage length according to the target number of bits required by the data item, thereby improving the accuracy when the processor calls the configuration parameter value defined by the data.
In yet another possible implementation manner of the first aspect, the target number of bits required for a value in the value range is a corresponding number of bits capable of expressing a maximum value in the value range.
It should be noted that, if the number of binary bits required for the maximum value in the parameter attributes of the data definition does not coincide with the number of binary bits required for the minimum value, for example, the minimum value is 0, the number of required binary bits is 1 bit (binary), the maximum value is 110 (binary), and the required binary is 3 bits, the target number of bits for the data item is determined to be 3 bits (coinciding with the number of binary bits corresponding to the maximum value).
In a second aspect, an embodiment of the present application provides a storage apparatus for storing configuration parameters in an external memory, where the apparatus includes:
the index unit reads a configuration parameter index table from an internal memory, wherein the configuration parameter index table defines the value range of each data item in a plurality of data items and the target bit number required for expressing the value in the value range; a bit taking unit, configured to determine, according to the configuration parameter index table, a target bit number required for a first storage value of a first data item, where the first data item is any one of a plurality of data items in the internal memory;
a first storage unit that stores a first storage value of the first data item in an external memory in accordance with the target number of bits;
wherein the bit fetch unit and the first storage unit perform the same operation on each of the plurality of data items in the internal memory as the operation performed on the first data item.
It can be seen that, the target bit number required by each data item in the plurality of data items is determined through the configuration parameter index table, and then the target bit number required by each data item is stored in the external memory, instead of determining the bit number of each data item by the storage space of the structure body for each data item, and then writing each data item into the external memory in the form of the structure body, that is, the size of the storage space occupied by each data item is accurate to the target bit number through the configuration parameter index table, and the value stored in the external memory continuously according to the target bit number is stored, so that the stored data is stored in the external memory according to the required target bit number, the storage space in the external memory is saved, and the storage efficiency of the external memory is improved.
In an optional aspect of the second aspect, the apparatus further comprises:
the configuration unit is used for configuring the parameter index and the parameter attribute according to the type of each data item before the index unit reads the configuration parameter index table from the internal memory;
and the establishing unit is used for establishing a configuration parameter index table related to data definition according to the configuration parameter index and the parameter attribute, wherein the configuration parameter index table is stored in the internal memory.
It can be seen that the parameter index of each data item is configured, that is, the specific name and function of the data item are listed in an enumerated form; configuring parameter attributes defined by data, namely configuring parameters such as a minimum value, a maximum value, an offset address, a target bit number, a first stored value (default value) and the like of the data item; the configuration parameter index table is stored in the internal memory, the related configuration parameters and parameter values are related characteristic values of each data item, and are fixedly stored in the internal memory, and the data definitions and the related parameters configured by the data definitions occupy a larger storage space, but are stored in the internal memory and are not stored in the external memory, so that the storage efficiency of the external memory can be effectively improved.
In yet another optional aspect of the second aspect, the apparatus further comprises:
a first obtaining unit, configured to obtain, after the first storage unit stores the first storage value of the first data item into an external memory according to the target bit number, a second storage value if the second storage value exists;
a judging unit, configured to judge whether the second storage value is within a range of a parameter value defined by data in the configuration parameter index table;
and the second storage unit is used for storing the second storage value into the external memory according to the index table of the configuration parameters if the second storage value is in the range of the parameter value defined by the data.
It can be seen that each data item has a first stored value (which may be understood as a default stored value of the configuration parameter) in the index table, if the data item has a second stored value (which may be understood as a new value of the parameter), the processor obtains a maximum value and a minimum value in the data definition parameter values through the configuration parameter index table stored in the memory, determines whether the second stored value has a range between the maximum value and the minimum value, and if the second stored value has the range, the processor calls the configuration parameter index table in the internal memory to obtain a target number of bits in the data definition parameter values, and stores the second stored value in the external memory according to the required target number of bits. That is, each time the processor is powered on, the processor executes the processing action of calling the configuration parameter index table and comparing the second storage value in the processor, the second storage value is not stored in the internal memory, the data in the internal memory can be guaranteed not to be updated, the internal memory is prevented from being erased, and the like, and the second storage value of the required target digit of the data item is written into the external memory, so that the second storage value can be guaranteed to be stored in the external memory according to the required target digit, and the efficiency of data storage of the external memory is improved.
In yet another optional scheme of the second aspect, the first storage unit specifically includes:
determining a starting storage location of the first storage value in the external memory according to an offset address corresponding to the first data item in the configuration parameter index table, wherein each data item corresponds to a respective offset address in the external memory;
storing a first storage value of the first data item into the external memory starting from the starting storage location and starting from the target number of bits as a storage length.
It can be seen that the parameter attribute related to the data definition in the configuration parameter index table further includes an offset address and a storage length of each data item, that is, a plurality of data items are stored in the internal memory, and the locations of the plurality of data items stored in the external memory are queried by the offset address, and the processor can find the parameter index, the parameter attribute, the corresponding value of the parameter attribute, and the like of each data item when calling the parameter index table of the internal memory, determine the starting location of the storage value of the data item stored in the external memory according to the offset address of the data item, and determine the storage length according to the target number of bits required by the data item, thereby improving the accuracy when the processor calls the configuration parameter value defined by the data.
In a third aspect, an embodiment of the present application provides an electronic device, including a transceiver, a processor, and a memory, where the memory is used to store a computer program, and the processor invokes the computer program to execute any one of the first aspect and the second aspect of the present application, where the external memory is used to store configuration parameters.
In a fourth aspect, an embodiment of the present application provides a computer storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer storage medium implements the first aspect of the present application and any one of the storage methods of the first aspect of the present application, which uses an external memory to store configuration parameters.
In a fifth aspect, the present application provides a computer program product, which when run on an electronic device, causes the electronic device to execute any one of the first aspect and the storage method for storing configuration parameters by using an external memory of the first aspect of the present application.
It should be appreciated that the description of technical features, solutions, benefits, or similar language in this application does not imply that all of the features and advantages may be realized in any single embodiment. Rather, it is to be understood that the description of a feature or advantage is intended to include the specific features, aspects or advantages in at least one embodiment. Therefore, the descriptions of technical features, technical solutions or advantages in the present specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and advantages described in the present embodiments may also be combined in any suitable manner. One skilled in the relevant art will recognize that an embodiment may be practiced without one or more of the specific features, aspects, or advantages of a particular embodiment. In other instances, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments.
Drawings
The drawings used in the embodiments of the present application are described below.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;
FIG. 2 is a flowchart illustrating a method for storing configuration parameters using an external memory according to an embodiment of the present disclosure;
FIG. 3 is a schematic flow chart illustrating a data storage according to an embodiment of the present application;
FIG. 4 is a schematic flow chart illustrating the storage of a second stored value according to an embodiment of the present application;
FIG. 5 is a schematic diagram illustrating a scenario in which an internal memory RAM continuously stores according to an embodiment of the present application;
fig. 6 is a schematic view of a scenario in which an external memory continuously stores data according to an embodiment of the present application;
FIG. 7 is a schematic diagram illustrating a method for reading stored values from an external memory according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a storage device that stores configuration parameters using an external memory according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described in detail and clearly with reference to the accompanying drawings. The terminology used in the description of the embodiments herein is for the purpose of describing particular embodiments herein only and is not intended to be limiting of the application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. The electronic device 10 includes a processor 101, an internal memory flash102, a random access memory (RAM, which may also be referred to as internal memory RAM)103, and an external memory 104. When the memory needs to store a value, the value is usually written into the internal memory flash102 through a definition of a structure, the processor 101 reads data from the internal memory flash102 into the internal memory RAM in the form of a structure, the processor 101 stores data from the internal memory RAM into the external memory 104, the internal memory RAM103 can be understood as a connector between the processor 101 and the external memory, because the internal memory flash has a limited storage space, when storing the second storage value, the previous storage data needs to be erased, which causes a loss of the previous storage data, and writing the second storage value into the external memory in the form of a structure also causes a waste of the storage space of the external memory, for example, when the data is written in the form of a structure, the data occupies 4 bytes of the external memory, the actual data occupies only 2 bits, which causes the data cannot be stored into the external memory according to the target number of bits of the storage data, the storage space of the external memory is wasted, and therefore, the electronic device 10 is improved in the present application in view of this disadvantage.
In the present application, a configuration parameter index table of data definitions is stored in an internal memory flash102 of the electronic device 10, where the configuration parameter index table includes a parameter index and a parameter attribute, if a certain data item of a plurality of data items has a second stored value (i.e. a new value of the parameter), the second stored value is not written into the internal memory flash102 in a form of a structure, but the parameter attribute in the configuration parameter index table is called from the internal memory flash102 by the processor 101, where the corresponding value of the parameter attribute of the data definitions includes a minimum value, a maximum value, an offset address of the data item and a specific value of a target bit number of the data item, the processor 101 finds a storage location of the data item in the external memory by an offset address in the parameter value of the data definitions, and the processor 101 compares the second stored value of the data item with the maximum value and the minimum value of the parameter attribute of the data definitions, if the data-defined parameter attribute is within the range of the maximum value and the minimum value of the data-defined parameter attribute, the required target number of bits of the second stored value of the data item is stored in the internal memory RAM103 according to the target number of bits (size) in the data-defined parameter attribute, and the second stored value of the data item is written from the internal memory RAM103 into the external memory 104, wherein the internal memory RAM103 is connected to a connector between the processor 101 and the external memory 104. That is, the configuration parameter index table is fixedly stored in the internal memory flash102, the second storage value of the data item is not written into the internal memory flash102 in the form of a structure, but the processor 101 calls a corresponding value of a parameter attribute defined by data in the configuration parameter index table in the internal memory flash102, finds the position information of the data item on the external memory flash by using an offset address, stores the second storage value conforming to the value range into the external memory according to a required target bit number, does not need to write the second storage value into the internal memory in the form of a structure, avoids the data loss caused by the fact that the internal memory flash102 needs to be erased by taking a sector as a unit when being rewritten, and stores the second storage value conforming to the value range into the external memory according to the required bit number instead of writing the data in the form of a structure as a whole, the external storage data is stored into the external storage according to the target digit, and the utilization rate of the storage space of the external storage is improved.
Referring to fig. 2, fig. 2 is a flowchart illustrating a storage method for storing configuration parameters by using an external memory according to an embodiment of the present application, where the method may be implemented based on the electronic device 10 shown in fig. 1 or based on other architectures, and the method includes, but is not limited to, the following steps:
s201: the configuration parameter index table is read from the internal memory.
Reading a configuration parameter index table from an internal memory, that is, reading a parameter index and a parameter attribute in the configuration parameter index table, where a data definition (including the configuration parameter index and the parameter attribute) may be expressed by enumerating function names of a plurality of data items in an enumerated form for explaining specific functions of the data items, possible values or value ranges of the data items, and a required target bit number, where the parameter index is a specific function introduction about the data items, and the parameter attribute specifically includes a minimum value, a maximum value, an offset address (a distance between a storage location of the configuration parameter and a storage start location), a size of a duty cycle of the parameter attribute, a first storage value, and the like.
It should be noted that the parameter INDEX is a specific functional introduction related to the data item, for example, by defining "SYS _ configuration _ INDEX _ CHARG _ MODE" by enumeration to characterize the charging MODE (CHARG MODE), four operation MODEs may exist for the charging MODE of this product: Vehicle-to-Vehicle mutual charging mode (V2V, which may be understood as charging a Vehicle with a Vehicle, referred to as V2V mode for short), Vehicle-to-Load charging mode (V2 to Load, referred to as V2L, which may be understood as charging other loads with power from a power battery, referred to as V2L mode for short), Vehicle-to-grid interaction mode (V2G, which may be understood as interaction between an electric Vehicle and a grid, referred to as V2G mode for short), Vehicle-to-Home Load interaction mode (V2H, which may be understood as interaction between an electric Vehicle and a Home Load, referred to as V2H mode for short), which may be represented by 00,01,10,11 (binary), respectively, and then there are four values for the charging mode data item, and therefore the required storage location is 2 bits (in binary state).
The parameter attributes defined by the data are used to describe information such as a value range of the data item or a required target bit number, a storage position, and a first storage value, and specifically, for example, the parameter attributes related to the charge mode (charge) include an offset address addressOffset, a target bit number Size, a minimum value min, a maximum value max, and a first storage value default (that is, a default value of the configuration parameter value). The parameter attribute of each parameter INDEX has a corresponding value, for example, the enumeration defines "SYS _ configuration _ INDEX _ CHARG _ MODE" to characterize the charging MODE (CHARG MODE), the offset address (i.e., the distance between the storage location of the parameter attribute and the storage start location) of the parameter attribute may be 0 (indicating that the data item is stored in the external memory from the start location), the target number of bits is required to be 2 bits, the minimum value is 0 (i.e., binary 00), the maximum value is 3 (i.e., binary 11), and the first storage value of the parameter attribute may be 0 (e.g., 0 may indicate that the MODE is V2V at this time).
In some embodiments, the parameter index of the data definition may be understood as an enumeration definition according to the product function and its related parameters, and the parameter index is stored in an internal memory flash. As shown in table 1, table 1 is a table of parameter indexes related to data definition provided in this application, and 3 kinds of parameter indexes related to data definition are listed in table 1, it should be noted that an enumeration type of a parameter index related to data definition may be defined according to a function of a product, and the enumeration definition may be multiple, but is not limited to 3, and is not limited to this application. For example, when the parameter INDEX of the data definition defines the related function of the charging MODE 301, the enumeration INDEX "SYS _ configuration _ INDEX _ CHARG _ MODE" is used to characterize the data item of the charging MODE 301(CHARG MODE), and in the charging MODE related function of the product, 4 functions may occur: V2V mode, V2L mode, V2G mode, V2H mode, and for example, when the data definition defines whether CC (Connection Confirm) is enabled 302, the function of whether CC is enabled 302 may be enumerated with an INDEX "SYS _ configuration _ INDEX _ CC _ ENABLE" for characterizing whether CC is enabled 302 data item, there may be 2 cases: enable and disable. For another example, where the data definition defines a function associated with maximum POWER 303, an enumeration INDEX "SYS _ CONFIG _ INDEX _ POWER _ MAX" is used to characterize the data item for maximum POWER (POWER MAX)303, e.g., the enumeration definition for maximum POWER ranges from 100W to 6600W (decimal).
TABLE 1
In some embodiments, the parameter attribute of the data definition characterizes the relevant parameter attribute of each data item, and may specifically include a minimum value, a maximum value, an offset address (i.e. a distance between a storage location of the parameter attribute of the data definition and a storage start location), a target bit number (i.e. a size of a space occupied by the configuration parameter), a first storage value, and the like of the configuration parameter, and the parameter attribute of the data definition is stored in the internal memory flash. As shown in table 2, table 2 is a configuration parameter INDEX table related to data definition provided in an embodiment of the present application, for example, an enumeration INDEX "SYS _ configuration _ INDEX _ CHARG _ MODE" characterizes a charging MODE (CHARG MODE), and corresponding parameter attributes thereof include: offset address addressOffset, target bit number Size, minimum value valumin, maximum value valueMax, first stored value valuefault (i.e., default value of configuration parameter). The parameter attribute corresponding to the enumeration INDEX "SYS _ CONFIG _ INDEX _ CC _ ENABLE" as to whether CC is enabled 302 in the data definition and the parameter attribute corresponding to the enumeration INDEX "SYS _ CONFIG _ INDEX _ POWER _ MAX" as to the maximum POWER 303 in the data definition are also 5 items described above, and details thereof are not repeated.
TABLE 2
In some embodiments, different parameter indexes correspond to different specific values related to the parameter attribute, that is, a corresponding value exists for the parameter attribute corresponding to the parameter index of each data item, and the specific value is also stored in the internal memory flash. For example, as shown in table 2, there are specific values of the parameter attribute corresponding to the parameter index of 3 data items in the table, and the specific value of the parameter attribute corresponding to the parameter index of each data item is different, for example, the charging MODE (CHARG MODE)301 may have an offset address of 0 (indicating that the data item is stored from a starting position), a target bit number of 2 bits is required (indicating that the storage size in the external memory is 2 bits), a minimum value of 0 (i.e., binary 00) and a maximum value of 3 (i.e., binary 11), and a first storage value of 0 (e.g., 0 may indicate that the V2V MODE is present). Also for example, whether CC is enabled (CCENABLE)302, whose offset address may be 2 (indicating that the data item is stored starting from 2 bits from the starting position), the number of required target bits is 1 bit (indicating that the storage size in external memory is 1 bit), the minimum value is 0 (i.e., binary 0), the maximum value is 1 (i.e., binary 1), and its first storage value may be 1 (e.g., 0 may indicate that CC is enabled at this time). Also for example, the maximum POWER (POWER MAX)303, the offset address of which may be 3 (indicating that the data item is stored starting from a position 3 bits away from the starting position), the number of target bits required may be 16 bits (indicating that the storage size in the external memory is 16 bits), the minimum value is 100 (i.e., binary 1100100), the maximum value is 6600 (i.e., binary 0001100111001000), the first storage value of which may be 6000 (e.g., 6000 indicates that the POWER value at this time is 6000W), that is, the class names (the maximum value, the minimum value, the target bit number, the offset address, and the first storage value) of the parameter attributes corresponding to the parameter indexes of the three data items are the same value, and the specific values of the parameter attributes are different.
It should be noted that the parameter index and the parameter attribute (including the name and corresponding value of the parameter attribute) related to the data definition in the configuration parameter index table are stored in the internal memory flash, and when the function of the product is defined by enumeration, the configuration parameter index table related to the function is generated and stored in the internal memory, and the space of the external memory is not occupied.
A target number of bits required for a first storage value of a first data item is determined from a configuration parameter index table S202.
The first data item is any one of a plurality of data items, specifically, the specific step of each data item storing data into the external memory is consistent, the same operation as the first data item is performed for each data item of the plurality of data items in the internal memory, and the storage of the data of the first data item into the external memory is taken as an example in the embodiment of the present application.
The first stored value (the first time the data is stored to external memory as defined by the data) may be represented as a configuration parameter default value, as shown in table 2, the first stored value of the charging MODE (CHARG MODE)301 may be 0, the first stored value of the CC ENABLE (CC ENABLE)302 may be 1, and the first stored value of the maximum POWER (POWER MAX)303 may be 6000. Generally, the first stored value is between the maximum and minimum values of the configuration parameter value, and meets the value condition. It should be noted that the first stored value of the data item is stored in the internal memory flash (corresponding to the configuration parameter value), and the second stored value of the data item (which may be understood as a new value) is not stored in the internal memory, but the processor determines whether the second stored value of the data item satisfies the storage condition (within the value range), and stores the second stored value of the data item in the external memory according to the target number of bits.
In some embodiments, the processor obtains the target number of bits of the corresponding data item by calling a configuration parameter index table in the internal memory flash. As shown in table 2, for example, the target bit number of the charge MODE (CHARG MODE)301 is 2 bits, the target bit number of the CC ENABLE (CC ENABLE)302 is 1 bit, and the target bit number of the maximum POWER (POWER MAX)303 is 16 bits. It should be noted that the processor acquires the target number of bits of the stored value, that is, the actual size of the stored bit of the stored value, and reads out the stored value to the external memory according to the required target number of bits, thereby improving the storage efficiency of the external memory.
In some embodiments, the target number of bits required to determine the first stored value of the first data item may also be the target number of bits to determine the second stored value (which may be understood as a new value of a parameter) of the first data item according to the configuration parameter index table, that is, the processor obtains the target number of bits for each stored value stored in the external memory through the configuration parameter index table, and the target number of bits corresponding to the same parameter index type of the same data item is the same.
In some embodiments, the target number of bits required for a value in the value range is a corresponding number of bits capable of expressing a maximum value in the value range, that is, the storage bits (target number) are required to be binary required bits corresponding to the value number, or the binary required bits corresponding to the maximum value in the value range defined by the data are required to be stored, for example, when the value of the type defined by the data is a non-value range (for example, four charging modes), the target number of bits defined by the data is determined according to the binary required bits corresponding to the value number defined by the data, for example, in the charging mode function of the product, a total of 4 modes may occur: the V2V MODE, V2L MODE, V2G MODE, V2H MODE, which may be represented by 00,01,10,11 (binary), the relevant number of functions defined with respect to data is 4, the number of binary bits corresponding to the 4 numbers defined with respect to enumeration is 2 bits, and the required storage bit of the charge MODE (CHARG MODE)301 is 2 bits (which may be used to represent 4 numbers). For another example, when the type of the data definition is a value range (e.g., a POWER range), the required storage bit of the data definition is a binary required bit number corresponding to a maximum value in the value range of the data definition, it may be understood that a binary bit number corresponding to a storage bit selecting the maximum value represents a required storage bit (target storage bit) of the data definition, for example, an enumeration of the maximum POWER (POWER MAX)303 defines a range of 100W-6600W (decimal), which may be represented by 1100100 (binary) -0001100111001000 (binary), and a required storage bit 16 bits using the maximum POWER 0001100111001000 (binary) represents that the required storage bit (target storage bit) of the data definition is 16 bits. That is to say, when determining the target digit in the configuration parameter index table of the data definition, the data definition index type may be a non-value range type (for example, the number of specific values, including 4 charging modes) or a value range type (for example, a power range), and if the data definition index type is the non-value range type, the digit required by the binary system corresponding to the enumeration definition number is taken as the target digit; if the data definition index type is a value range type, the binary required bit number corresponding to the maximum value of the value range of the data definition is used as a target bit number, and it should be noted that, in the case that the enumeration definition of the data definition is the value range, the maximum value of the value range is selected to represent the required storage bit of the data definition, and the storage bits required by the rest storage values can be within the range of the required storage bit of the maximum value, so that the rest storage values can be stored.
S203, storing the first storage value of the first data item in an external memory according to the target digit.
In some embodiments, when the processor stores the stored value in the internal memory into the external memory, it needs to first read the stored data into the internal memory RAM and then write the stored data from the RAM into the external memory. For example, in the process of storing the first storage value into the external memory, the processor calls the index table related to the data definition in the internal memory flash first, reads out the first storage value of the configuration parameter, obtains the storage size of the configuration parameter, reads out the first storage value 0 related to the charging mode into the RAM first, and then writes the first storage value 0 of the charging mode into the external memory from the RAM.
In some embodiments, the data loss may be caused by the RAM being powered down, in the case of keeping the system powered up, the stored data in the internal memory is read out to the RAM, and then the data in the RAM is written into the external memory, and when the stored data is already stored in the external memory, and the external memory is powered up again, the processor reads out the configuration parameters from the external memory to the RAM. As shown in fig. 3, fig. 3 is a schematic flow chart of data storage according to an embodiment of the present application. If the first data item is a data definition related to charge MODE (CHARG MODE)301, the system is powered on for the first time (i.e. when the stored value is the first stored value), the processor obtains the first stored value 0 of the data definition according to the configuration parameter index table in the internal memory flash and obtains the offset address 0 of the configuration parameter, reads the target bit number 1 of the configuration parameter, and writes the first stored value into the RAM, if there is a next parameter (i.e. the remaining data definitions), for example, whether CC ENABLE (CC ENABLE)302 data definition exists, the processor obtains the first stored value 1 of the data definition according to the configuration parameter index table in the internal memory flash and obtains the offset address 2 of the configuration parameter, reads the target bit number 1 of the configuration parameter, writes the first stored value into the RAM, and stores it sequentially if there is the next parameter (e.g. maximum power), and will not be described in detail herein.
It should be noted that, because the configuration parameter index table stored in the internal memory flash is not lost when power is lost and the data stored in the external memory is also not lost when power is lost, but the data stored in the internal memory RAM (buffer) is lost when power is lost, if the stored value is stored in the external memory, the processor needs to read the stored value from the external memory into the RAM, and then read the stored value from the RAM to perform an operation.
In some embodiments, if the stored value of the data item is updated (the second stored value of the data item), the processor first calls the configuration parameter index table from the internal memory, obtains the maximum value and the minimum value corresponding to the function defined by the data about the data, obtains the value range, and determines whether the second stored value of the data item is within the value range, and if the second stored value is within the value range, the processor stores the second stored value into the external memory. Fig. 4 is a schematic flow chart illustrating a process for storing the second storage value according to an embodiment of the present application, as shown in fig. 4. If the function of the data item is charging MODE (CHARG MODE)301, the second storage value related to the charging MODE is 01 (for example, indicating V2L MODE), the processor calls the configuration parameter index table related to the charging MODE in the internal memory flash, obtains the maximum value max and the minimum value min in the configuration parameter index table, obtains the value range (for example, the value may be 00,01,10,11), determines whether the value 01 of the second storage value of the parameter (i.e., the new value of the parameter) is within the value range, obtains 01 within the value range (00,01,11,10), the second stored value 01 of the charging mode satisfies the storage condition, the processor reads out the index table related to the configuration parameter to obtain the offset address (for example, the offset address of the charging mode is 0), obtains the storage size of the configuration parameter (01 is two bits), writes the second stored value 01 into the RAM, and then writes the data in the RAM into the external memory; if the second stored value is not within the value range, an error is returned and the second stored value does not satisfy the storage condition.
In some embodiments, after the processor reads the stored value of the data item out of the RAM, the starting point of the storage of the stored data in the RAM is determined according to the offset address, and the storage length of the data item in the RAM is the target number of bits required for the data item. As shown in fig. 5, fig. 5 is a schematic diagram of a scenario in which the internal memory RAM continuously stores data, and when the data is defined as a charge MODE (CHARG MODE)301 function, the processor obtains an offset address of 0 (i.e., store from the first bit) from a configuration parameter index table of the internal memory, the memory location is 2 bits, and two bits of data regarding the charge MODE are stored in 1,2 (i.e., the 1 st bit and the 2 nd bit) of the internal memory RAM. When the data definition is CC ENABLE or not (CC ENABLE)302, the processor retrieves from the configuration parameter index table of the internal memory its offset address is 2 (i.e. storing from bit 3), the target number of bits is required to be 1 bit, and the data as to whether CC is enabled or not is stored at 3 of the internal memory RAM (i.e. third bit). For another example, when the data is defined as the maximum POWER (POWER MAX)303, the processor obtains the offset address of 3 (i.e. starting to store from the 4 th bit) from the configuration parameter index table of the internal memory flash, the target bit number is 16 bits, and the data about the maximum POWER is stored at 4-19 of the internal memory RAM (i.e. the 4 th bit to the 19 th bit of the RAM memory).
In some embodiments, the processor, after reading the data items into the RAM, stores the stored values in the RAM into the external memory. Referring to fig. 6, fig. 6 is a schematic view of a scenario in which an external memory continuously stores according to an embodiment of the present application. When the data is defined as charging MODE (CHARG MODE)301, the processor obtains the offset address of 0 from the configuration parameter index table of the internal memory (i.e. starting from the 1 st bit of the external memory), the required storage bit is 2 bits, and the two-bit data regarding the charging MODE is stored at 1,2 (i.e. the 1 st bit and the 2 nd bit of the external memory). When the data is defined as CC ENABLE or not (CC ENABLE)302, the data of CC ENABLE or not is stored at 3 (i.e. 3 rd bit of the external memory), and when the data is defined as maximum POWER (POWER MAX)303, the data of maximum POWER is stored at 4-19 (i.e. 4 th bit to 19 th bit of the external memory), which is similar to the continuous storage of the RAM, and is not described herein again. It should be noted that bits 1-19 of the external memory are consecutive storage bits, so that each storage bit of the external memory is used, and the storage efficiency of the external memory is improved.
In some embodiments, after the stored value is stored in the external memory (not lost upon power loss), the system may read the stored value from the external memory into the RAM and then read the stored value from the RAM for operation. Fig. 7 is a schematic diagram illustrating a method for reading a stored value from an external memory according to an embodiment of the present application, as shown in fig. 7. The processor calls a configuration parameter index table about the read data item in the internal memory flash, obtains an offset address about the read data item, a required target bit number (storage size), reads a stored value of the data item from the external memory, and reads the stored value in the external memory into the internal memory RAM for operation.
The above describes a storage method for storing configuration parameters using an external memory, and the following describes an apparatus of the method.
As shown in fig. 8, fig. 8 is a schematic structural diagram of a storage device using an external memory to store configuration parameters according to an embodiment of the present application. The apparatus 20 includes an indexing unit 1001, a bit fetching unit 1002, a first storage unit 1003, a configuration unit 1004, a building unit 1005, a first obtaining unit 1006, a determining unit 1007, and a second storage unit 1008, and is specifically configured to:
an indexing unit 1001 configured to read a configuration parameter index table from an internal memory, where the configuration parameter index table defines a value range of each of a plurality of data items and a target number of bits required to express a value in the value range;
a bit fetching unit 1002, configured to determine, according to the configuration parameter index table, a target bit number required for a first storage value of a first data item, where the first data item is any one of a plurality of data items in the internal memory;
a first storage unit 1003 that stores a first storage value of the first data item in an external memory in accordance with the target number of bits;
wherein the bit fetching unit 1002 and the first storage unit 1003 perform the same operation on each of the plurality of data items in the internal memory as the operation performed on the first data item.
It can be seen that, the target bit number required by each data item in the plurality of data items is determined through the configuration parameter index table, and then the target bit number required by each data item is stored in the external memory, instead of determining the bit number of each data item by the storage space of the structure body for each data item, and then writing each data item into the external memory in the form of the structure body, that is, the size of the storage space occupied by each data item is accurate to the target bit number through the configuration parameter index table, and the value stored in the external memory continuously according to the target bit number is stored, so that the stored data is stored into the external memory according to the required target bit number, the storage space in the external memory is saved, and the storage efficiency of the external memory is improved.
In an optional aspect, the apparatus 20 further comprises:
a configuration unit 1004 configured to configure the parameter index and the parameter attribute according to the type of each data item before the index unit reads the configuration parameter index table from the internal memory;
an establishing unit 1005, configured to establish a configuration parameter index table defined with respect to data according to the configuration parameter index and the parameter attribute, where the configuration parameter index table is stored in the internal memory.
It can be seen that the parameter index of each data item is configured, that is, the specific name and function of the data item are listed in an enumerated form; configuring parameter attributes defined by data, namely configuring parameters such as a minimum value, a maximum value, an offset address, a target digit, a first storage value and the like of the data item; the configuration parameter index table is stored in the internal memory, the related configuration parameters and parameter values are related characteristic values of each data item, and are fixedly stored in the internal memory, and the data definitions and the related parameters configured by the data definitions occupy a larger storage space, but are stored in the internal memory and are not stored in the external memory, so that the storage efficiency of the external memory can be effectively improved.
In an optional aspect, the apparatus 20 further comprises:
a first obtaining unit 1006, configured to, after the first storing unit stores the first storage value of the first data item into an external memory according to the target bit number, obtain a second storage value if the second storage value exists;
a judging unit 1007, configured to judge whether the second storage value is within a range of a parameter value defined by data in the configuration parameter index table;
a second storage unit 1008, if the parameter value is in the range of the parameter value defined by the data, is configured to store the second storage value in the external memory according to the index table of the configuration parameter.
It can be seen that there exists a first stored value (which may be understood as a default stored value) in the index table for each data item, and if there exists a second stored value (which may be understood as a new value) in the index table for the data item, the processor obtains the maximum value and the minimum value in the data definition parameter values through the configuration parameter index table stored in the memory, determines whether the second stored value exists in a range between the maximum value and the minimum value, and if so, the processor calls the configuration parameter index table in the internal memory to obtain a target number of bits in the data definition parameter values, and stores the second stored value in the external memory according to the required target number of bits. That is, each time the processor is powered on, the processor executes the processing action of calling the configuration parameter index table and comparing the second storage value in the processor, the second storage value is not stored in the internal memory, the data in the internal memory can be guaranteed not to be updated, the internal memory is prevented from being erased, and the like, and the second storage value of the required target digit of the data item is written into the external memory, so that the second storage value can be guaranteed to be stored in the external memory according to the required target digit, and the efficiency of data storage of the external memory is improved.
In an optional scheme, the first storage unit 1003 specifically includes:
determining a starting storage location of the first storage value in the external memory according to an offset address corresponding to the first data item in the configuration parameter index table, wherein each data item corresponds to a respective offset address in the external memory;
storing a first storage value of the first data item into the external memory starting from the starting storage location and starting from the target number of bits as a storage length.
It can be seen that, the parameter attribute related to the data definition in the configuration parameter index table further includes an offset address of each data item, that is, a plurality of data items are stored in the internal memory, the locations of the plurality of data items stored in the external memory are queried by the offset address, and the processor can find the parameter index, the parameter attribute, the corresponding value of the parameter attribute, and the like of each data item when calling the parameter index table of the internal memory, determine the starting location of the stored value of the data item stored in the external memory according to the offset address of the data item, and determine the length of the storage according to the target number of bits required by the data item, thereby improving the accuracy when the processor calls the configuration parameter value defined by the data.
An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, and when the computer program runs on a processor, the computer program implements any of the above method flows.
An embodiment of the present invention further provides a computer program product, which when running on a processor, implements any one of the above method flows.
In summary, by implementing the embodiments of the present application, the target bit number required by each of the plurality of data items is determined through the configuration parameter index table, and then the target bit number required by each data item is stored in the external memory, instead of determining the bit number of each data item by using the storage space of the structure for each data item, and then writing each data item into the external memory in the form of a structure, that is, the size of the storage space occupied by each data item is accurate to the target bit number through the configuration parameter index table, and the value stored in the external memory continuously according to the target bit number is stored, so that each bit in the external storage space can be used, the storage space in the external memory is saved, and the storage efficiency of the external memory is improved.
One of ordinary skill in the art will appreciate that all or part of the processes in the methods of the above embodiments can be implemented by hardware associated with a computer program that can be stored in a computer-readable storage medium, and when executed, can include the processes of the above method embodiments. And the aforementioned storage medium includes: various media that can store computer program codes, such as a read-only memory ROM or a random access memory RAM, a magnetic disk, or an optical disk.
Claims (10)
1. A method for storing configuration parameters in an external memory, comprising:
reading a configuration parameter index table from an internal memory, wherein the configuration parameter index table defines a value range of each data item in a plurality of data items and a target bit number required for expressing a value in the value range;
performing the same operation as the first data item for each of a plurality of data items in the internal memory:
determining a target number of bits required for a first storage value of a first data item according to the configuration parameter index table, wherein the first data item is any one of a plurality of data items in the internal memory;
storing a first stored value of the first data item in an external memory according to the target number of bits.
2. The method of claim 1, wherein before the reading the configuration parameter index table from the internal memory, the method further comprises:
configuring a parameter index and a parameter attribute according to the type of each data item;
and establishing a configuration parameter index table related to data definition according to the configuration parameter index and the parameter attribute, wherein the configuration parameter index table is stored in the internal memory.
3. The method of claim 1, wherein after storing the value of the first data item in the external memory according to the target number of bits, the method further comprises:
if a second storage value exists, acquiring the second storage value;
judging whether the second storage value is in the range of the parameter value defined by the data in the configuration parameter index table;
and if the data is in the range of the parameter value defined by the data, storing the second storage value into the external memory according to the index table of the configuration parameter.
4. A method according to any of claims 1-3, wherein said storing a first stored value for said first data item in an external memory according to said target number of bits comprises:
determining a starting storage location of the first storage value in the external memory according to an offset address corresponding to the first data item in the configuration parameter index table, wherein each data item corresponds to a respective offset address in the external memory;
storing a first storage value of the first data item into the external memory starting from the starting storage location and starting from the target number of bits as a storage length.
5. The method according to any one of claims 1 to 3,
the target number of bits required for a value within the value range is the corresponding number of bits that can express the maximum value in the value range.
6. A storage device in which an external memory stores configuration parameters, comprising:
the index unit reads a configuration parameter index table from an internal memory, wherein the configuration parameter index table defines the value range of each data item in a plurality of data items and the target bit number required for expressing the value in the value range; a bit taking unit, configured to determine, according to the configuration parameter index table, a target bit number required by a first storage value of a first data item, where the first data item is any one of multiple data items in the internal memory;
a first storage unit that stores a first storage value of the first data item in an external memory in accordance with the target number of bits;
wherein the bit fetch unit and the first storage unit perform the same operation on each of the plurality of data items in the internal memory as the operation performed on the first data item.
7. The apparatus of claim 6, further comprising:
the configuration unit is used for configuring the parameter index and the parameter attribute according to the type of each data item before the index unit reads the configuration parameter index table from the internal memory;
and the establishing unit is used for establishing a configuration parameter index table related to data definition according to the configuration parameter index and the parameter attribute, wherein the configuration parameter index table is stored in the internal memory.
8. The apparatus of claim 6, further comprising:
a first obtaining unit, configured to obtain, after the first storage unit stores the first storage value of the first data item into an external memory according to the target bit number, a second storage value if the second storage value exists;
a judging unit, configured to judge whether the second storage value is within a range of a parameter value defined by data in the configuration parameter index table;
and the second storage unit is used for storing the second storage value into the external memory according to the index table of the configuration parameters if the second storage value is in the range of the parameter value defined by the data.
9. The apparatus according to any one of claims 6-8, wherein the first storage unit specifically comprises:
determining a starting storage location of the first storage value in the external memory according to an offset address corresponding to the first data item in the configuration parameter index table, wherein each data item corresponds to a respective offset address in the external memory;
storing a first storage value of the first data item into the external memory starting from the starting storage location and starting from the target number of bits as a storage length.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a computer program which, when executed by a processor, carries out the method of any one of claims 1-5.
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