CN113805559A - Control parameter processing method, device and equipment - Google Patents
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Abstract
The invention provides a control parameter processing method, a control parameter processing device and control parameter processing equipment, and relates to the field of testing. The control parameter processing method is applied to a hardware-in-loop test control system, wherein the hardware-in-loop test control system comprises the following steps: the device comprises an upper computer and a controller to be tested, wherein the upper computer is connected with the controller to be tested through PCAN equipment, and the method comprises the following steps: analyzing the control parameters of the controller to be tested; acquiring the data type of the control parameter; and processing the control parameters according to the data type. According to the embodiment of the invention, the controller to be tested is directly connected with the upper computer through the PCAN equipment, and the read-write operation of the control parameter, namely the internal variable, is carried out according to the calibration protocol. The method is independent of hardware-in-the-loop test equipment, and cross-platform use can be realized. The difficulty of integrating the calibration function in the test system, especially in the automatic test system, is reduced.
Description
Technical Field
The present invention relates to the field of testing, and in particular, to a method, an apparatus, and a device for processing control parameters.
Background
In the research and development and verification process of an automobile Electronic Controller (ECU), the ECU needs to be tested and calibrated. The test refers to monitoring certain parameters in the controller through monitoring equipment during the running of the ECU so as to judge the working condition of the ECU and evaluate a control strategy. Calibration refers to modifying the values of certain control parameters in the ECU through a calibration device under the offline or online condition to observe the influence of different parameter values on the operation result. The CCP protocol and the XCP protocol are two international calibration protocols, and the current mainstream hardware-in-the-loop (HIL) test provider also provides calibration software supporting the two protocols, such as CALDESK of dSPACE, INCA-MCE of ETAS, and the like, but both of the two calibration software are in the form of optional packages of business software, which not only brings cost increase to a host factory, but also increases the difficulty of integrating the calibration function in a test system, especially an automatic test system.
Disclosure of Invention
The embodiment of the invention provides a control parameter processing method, a control parameter processing device and control parameter processing equipment, which are used for solving the problem of how to perform ECU control parameter reading and writing operation independently of HIL test equipment.
In order to solve the foregoing technical problem, an embodiment of the present invention provides a method for processing a control parameter, which is applied to a hardware-in-loop test control system, where the hardware-in-loop test control system includes: host computer, controller that awaits measuring, the host computer with controller that awaits measuring passes through PCAN equipment connection includes:
analyzing the control parameters of the controller to be tested;
acquiring the data type of the control parameter;
and processing the control parameters according to the data type.
Further, before analyzing the control parameter of the controller to be tested, the method further includes:
and setting parameters of the calibration protocol.
Further, the setting of the parameters of the calibration protocol includes:
and setting the type of a calibration protocol, the address information of a main controller, the USB channel information, the bus baud rate, the command receiving object ID and the data transmission object ID.
Further, the processing the control parameter according to the data type includes:
when the data type is a read-only type, controlling to read the control parameter;
and when the data type is a writable type, controlling to write preset information into the control parameter.
Further, the controlling reads the control parameter, including:
acquiring address information of the control parameter;
and reading data of the address corresponding to the address information.
Further, the controlling writing preset information into the control parameter includes:
sending an unlocking request to the controller to be tested;
acquiring an unlocking key according to a preset unlocking algorithm;
sending an unlocking confirmation according to the unlocking key;
acquiring address information of the control parameter according to the unlocking confirmation;
and controlling to write preset data information into the address corresponding to the address information.
An embodiment of the present invention further provides a control parameter processing apparatus, including:
the analysis module is used for analyzing the control parameters of the controller to be tested;
the acquisition module is used for acquiring the data type of the control parameter;
and the processing module is used for processing the control parameters according to the data types.
An embodiment of the present invention further provides a control parameter processing apparatus, including: the control parameter processing method comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the control parameter processing method when executing the computer program.
The invention has the beneficial effects that:
according to the embodiment of the invention, the controller to be tested is directly connected with the upper computer through the PCAN equipment, and the read-write operation of the control parameter, namely the internal variable, is carried out according to the calibration protocol. The method is independent of hardware-in-the-loop test equipment, and cross-platform use can be realized. The difficulty of integrating the calibration function in the test system, especially in the automatic test system, is reduced.
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FIG. 1 is a flow chart illustrating a control parameter processing method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a control parameter processing system according to an embodiment of the present invention;
FIG. 3 is a second flowchart illustrating a control parameter processing method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a control parameter processing apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
The invention provides a method, a device and equipment for processing control parameters, aiming at the problem of how to perform parameter read-write operation independently of HIL (hardware in the loop) test equipment.
As shown in fig. 1, an embodiment of the present invention provides a method for processing control parameters, which is applied to a hardware-in-loop test control system, where the hardware-in-loop test control system includes: host computer, controller that awaits measuring, the host computer with controller that awaits measuring passes through PCAN equipment connection, include:
and step 13, processing the control parameters according to the data type.
As shown in fig. 2, a hardware-in-loop test system applied by the control parameter processing method provided in the embodiment of the present invention includes: the system comprises an upper computer and a controller to be tested, wherein the upper computer and the controller to be tested are connected through PCAN equipment, a CAN end of the PCAN equipment is connected with a bus end of the controller to be tested, a USB end of the PCAN equipment is connected with the upper computer, specifically, the upper computer and HIL testing equipment are connected through a network cable, and the controller to be tested is located in the HIL testing equipment.
According to the embodiment of the invention, the controller to be tested is directly connected with the upper computer through the PCAN equipment, and the read-write operation of the control parameter, namely the internal variable, is carried out according to the calibration protocol. The method is independent of hardware-in-the-loop test equipment, and cross-platform use can be realized. The difficulty of integrating the calibration function in the test system, especially in the automatic test system, is reduced.
It should be noted that, after the test is started, the parameters of the calibration protocol need to be set, so before the step 11 analyzes the control parameters of the controller to be tested, the method further includes: and setting parameters of the calibration protocol.
Specifically, the setting of the parameter of the calibration protocol includes: and setting the type of a calibration protocol, the address information of a main controller, the USB channel information, the bus baud rate, the command receiving object ID and the data transmission object ID.
In order to implement processing, i.e., read-write operation, on an internal variable, i.e., a control parameter, the control parameter needs to be analyzed. The attribute determining the read/write operation is the data type of the control parameter, so the data type of the control parameter, i.e. the internal variable, needs to be identified. And determining to perform reading or writing operation on the internal variable according to the data type of the internal variable.
It should be noted that, the step 13 processes the control parameter according to the data type, and includes:
when the data type is a read-only type, controlling to read the control parameter;
and when the data type is a writable type, controlling to write preset information into the control parameter.
Specifically, for data to be read, address information of the control parameter in the memory of the controller to be tested needs to be determined, and the current pointer is pointed to the control parameter, that is, the address of the internal variable, so as to read the data of the memory address of the controller to be tested where the control parameter is located, so that the controlling and reading the control parameter includes:
acquiring address information of the control parameter;
and reading data of the address corresponding to the address information.
Specifically, for data to be written in, an unlocking request needs to be sent to a controller to be tested, an unlocking key of the controller to be tested is calculated according to a preset unlocking algorithm, an unlocking confirmation is sent to the controller to be tested, and then a current pointer is pointed to a control parameter, namely an address of an internal variable in a memory of the controller to be tested, so that data is written in the memory address of the controller to be tested where the control parameter is located, and therefore the control is used for writing preset information into the control parameter, and the method includes the following steps:
sending an unlocking request to the controller to be tested;
acquiring an unlocking key according to a preset unlocking algorithm;
sending an unlocking confirmation according to the unlocking key;
acquiring address information of the control parameter according to the unlocking confirmation;
and controlling to write preset data information into the address corresponding to the address information.
As shown in fig. 3, the control parameter processing method according to the embodiment of the present invention is divided into six parts, which are calibration protocol parameter setting, A2L/MAP/MAPXML file parsing, PCAN device initialization, CCP/XCP protocol establishing master-slave device connection, controlling parameter reading and writing, and disconnecting master-slave device connection, respectively.
Specifically, when the calibration protocol parameter is set, the protocol type (CCP/XCP) used by the controller, the address of the ECU of the main controller, the serial number of the USB channel, the bus baud rate, the command receiving object id (cro), and the data transmission object id (dto) are set. When the A2L/MAP/MAPXML file is analyzed, the MAP and MAPXML files are configuration files generated by the controller software when the machine language is integrated, the A2L file is generated based on the configuration files and conforms to the ASAP2 standard, the A2L file is developed based on ANTLR, and the attributes such as the data type (read-only or readable-write), the address, the conversion formula, the precision, the offset and the like of the control parameters contained in the A2L, MAP, MAPXML and other files can be analyzed. Preferably, the secondary development of Python language is implemented based on CCP/XCP API provided by the PCAN device when the PCAN device is initialized, the CCP/XCP protocol establishes the connection between the master device and the slave device, the control parameter is read and written, and the connection between the master device and the slave device is disconnected. The initialization of the PCAN device is to initialize a CAN communication protocol on a set CAN channel, and specifically may be completed by using a standard CAN channel initialization program.
By identifying the data type of the internal variable, i.e. the control parameter, it is determined whether a read or write operation is to be performed on the control variable. Specifically, by identifying the attribute of the data type of the internal variable, i.e., the control variable, if the attribute is "measurement variables", the internal variable is a read-only type; if the internal variable is the "CHARACTERISITIC" attribute, the internal variable is of a writable type.
After identifying the data type, whether the data type is a read-only type or a writable type, a master-slave device connection needs to be established, and optionally, a "connect" command (0xFF) of the CCP/XCP protocol is used to implement the master-slave device connection.
When the data type of the control parameter is a read-only type, the method can be specifically realized through three steps, 1, reading the address of the parameter in the memory of the controller from an A2L/MAP/MAPX file; 2. the SET _ MTA command (0xF6) using the CCP/XCP protocol causes the current pointer to point to the address where the variable is located; 3. using the UPLOAD command (0xF5) of CCP/XCP protocol, the data of the controller memory address where the variable is located is read and analyzed.
When the data type of the control parameter is a writable type, the data type can be specifically realized by a five-step line, and 1, a GET _ SEED (0xF8) command is used for requesting unlocking from a controller; 2. calculating an unlocking secret key of the controller through a preset unlocking algorithm; 3. sending an UNLOCK confirmation to the controller using UNLOCK (0xF7) command; 4. using the SET _ MTA command (0xF6), the current pointer is pointed to the address of the variable; 5. using the DOWNLOAD command (0xF0), data is written to the memory where the controller pointer is located.
Further, after the read-write operation of the data is completed, the disconnection of the master device and the slave device is realized by using a command of "disconnect" (0xFE) of the CCP/XCP protocol. And when the next variable needs to be read and written, skipping to the step of identifying the type of the internal variable.
As shown in fig. 4, an embodiment of the present invention further provides a control parameter processing apparatus, including:
the analysis module 41 is used for analyzing the control parameters of the controller to be tested;
an obtaining module 42, configured to obtain a data type of the control parameter;
and a processing module 43, configured to process the control parameter according to the data type.
It should be noted that, the apparatus provided by the present invention is an apparatus applying the control parameter processing method, and all embodiments of the control parameter processing method are applicable to the apparatus and can achieve the same or similar beneficial effects.
Specifically, the control parameter processing apparatus further includes:
and the setting module is used for setting the parameters of the calibration protocol.
Specifically, the setting module is further configured to set a calibration protocol type, host controller address information, USB channel information, a bus baud rate, a command receiving object ID, and a data transmission object ID.
Specifically, the processing module 43 includes:
the first control unit is used for controlling and reading the control parameter when the data type is a read-only type;
the second control unit is used for controlling to write preset information into the control parameter when the data type is a writable type;
specifically, the first control unit includes:
the first acquisition subunit is used for acquiring the address information of the control parameter;
and the reading subunit is used for reading the data of the address corresponding to the address information.
Specifically, the second control unit includes:
the first sending subunit is used for sending an unlocking request to the controller to be tested;
the second obtaining subunit is used for obtaining an unlocking key according to a preset unlocking algorithm;
the second sending subunit is used for sending an unlocking confirmation according to the unlocking key;
a third obtaining subunit, configured to obtain, according to the unlocking confirmation, address information of the control parameter;
and the writing subunit is used for controlling the writing of preset data information into the address corresponding to the address information.
An embodiment of the present invention further provides a control parameter processing apparatus, including: the control parameter processing method comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the control parameter processing method when executing the computer program. The implementation embodiments of the control parameter processing method are all applicable to the embodiment of the processing equipment, and the same technical effects can be achieved.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (8)
1. A control parameter processing method is applied to a hardware-in-loop test control system, wherein the hardware-in-loop test control system comprises the following steps: host computer, controller that awaits measuring, the host computer with controller that awaits measuring passes through PCAN equipment connection, its characterized in that includes:
analyzing the control parameters of the controller to be tested;
acquiring the data type of the control parameter;
and processing the control parameters according to the data type.
2. The method according to claim 1, wherein before the analyzing the control parameter of the controller under test, the method further comprises:
and setting parameters of the calibration protocol.
3. The control parameter processing method according to claim 2, wherein the setting of the parameter of the calibration protocol includes:
and setting the type of a calibration protocol, the address information of a main controller, the USB channel information, the bus baud rate, the command receiving object ID and the data transmission object ID.
4. The method according to claim 1, wherein the processing the control parameter according to the data type includes:
when the data type is a read-only type, controlling to read the control parameter;
and when the data type is a writable type, controlling to write preset information into the control parameter.
5. The control parameter processing method of claim 4, wherein the controlling reading the control parameter comprises:
acquiring address information of the control parameter;
and reading data of the address corresponding to the address information.
6. The method according to claim 4, wherein the controlling writing preset information into the control parameter comprises:
sending an unlocking request to the controller to be tested;
acquiring an unlocking key according to a preset unlocking algorithm;
sending an unlocking confirmation according to the unlocking key;
acquiring address information of the control parameter according to the unlocking confirmation;
and controlling to write preset data information into the address corresponding to the address information.
7. A control parameter processing apparatus characterized by comprising:
the analysis module is used for analyzing the control parameters of the controller to be tested;
the acquisition module is used for acquiring the data type of the control parameter;
and the processing module is used for processing the control parameters according to the data types.
8. A control parameter processing apparatus characterized by comprising: memory, processor and computer program stored on the memory and executable on the processor, the processor implementing the control parameter processing method according to any one of claims 1 to 6 when executing the computer program.
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| CN114780326A (en) * | 2022-04-27 | 2022-07-22 | 镁佳(北京)科技有限公司 | Cross-platform calibration test method, device and equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114780326A (en) * | 2022-04-27 | 2022-07-22 | 镁佳(北京)科技有限公司 | Cross-platform calibration test method, device and equipment |
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