CN114615159A - Data link equipment bus test system, test method and equipment - Google Patents
Data link equipment bus test system, test method and equipment Download PDFInfo
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Abstract
The invention discloses a bus test system, a test method and a device of data link equipment.A CAN receiving and sending module, a TLK2711 receiving and sending module and an 422/485 receiving and sending module are respectively used for setting corresponding protocol transmission parameters; the protocol receiving and processing module is used for sending the original test data to the data interpretation module; the receiving and sending module is used for correspondingly sending the test data after framing to the corresponding receiving and sending module; the system comprises a CAN receiving and sending module, a TLK2711 receiving and sending module, a 422/485 receiving and sending module and a data interpretation module, wherein the CAN receiving and sending module, the TLK2711 receiving and sending module and the data interpretation module are respectively split according to a CAN protocol, a TLK2711 protocol and an 422/485 protocol; and the data interpretation module is used for carrying out data correctness check according to the split test data and the original test data. The invention can realize the comparison test of the data content of the customized communication protocol and is beneficial to the technical verification of data link equipment.
Description
Technical Field
The invention relates to the field of data link equipment testing, in particular to a data link equipment bus testing system, a data link equipment bus testing method and data link equipment bus testing equipment.
Background
A plurality of common bus technologies, such as 422/485, CAN, TLK2711, LVDS and other serial and parallel bus technologies, are integrated in a certain type of data link equipment and are used for being compatible with a plurality of application scenarios.
In order to realize the test verification of the correctness of the bus function, most of the existing bus test systems are single-bus test platforms, the function is single, and the test efficiency is low. Meanwhile, most of the existing various bus test systems are bus physical characteristic tests, such as interface level, conductivity and the like, and the test indexes are not rich enough and inconvenient to use. In addition, the existing various bus test systems cannot realize the comparison test of the data content of the customized communication protocol, and are not beneficial to the technical verification of data link equipment.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a data link equipment bus test system, a test method and equipment, which have the advantages of rich functions, high test efficiency, rich test indexes and convenience in use, can realize the comparison test of the data content of a customized communication protocol, and are favorable for the technical verification of data link equipment.
In order to solve the technical problems, the invention is realized by the following technical scheme:
a data link equipment bus test system comprises a CAN receiving and sending module, a TLK2711 receiving and sending module, an 422/485 receiving and sending module, a protocol receiving and processing module, a data interpretation module and an interface matching module;
the CAN receiving and sending module, the TLK2711 receiving and sending module and the 422/485 receiving and sending module are respectively used for setting CAN protocol transmission parameters, TLK2711 protocol transmission parameters and 422/485 protocol transmission parameters;
the protocol receiving and processing module is used for sending the original test data to the data interpretation module; the system comprises a CAN receiving and sending module, a TLK2711 receiving and sending module and a 422/485 receiving and sending module, wherein the CAN receiving and sending module is used for receiving and sending test data of the CAN, the TLK2711 protocol and the 422/485 protocol; the system comprises a CAN receiving and sending module, a TLK2711 receiving and sending module, a 422/485 receiving and sending module and a data interpretation module, wherein the CAN receiving and sending module, the TLK2711 receiving and sending module and the data interpretation module are respectively split according to a CAN protocol, a TLK2711 protocol and an 422/485 protocol;
the interface matching module is used for realizing matching transmission of test data between the data link equipment and the CAN receiving and sending module, the TLK2711 receiving and sending module and the 422/485 receiving and sending module;
and the data interpretation module is used for carrying out data correctness check according to the split test data and the original test data.
Furthermore, the system also comprises an LVDS receiving and sending module;
the LVDS receiving and sending module is used for setting LVDS protocol transmission parameters;
the protocol receiving and processing module is also used for sending the original test data to the LVDS receiving and sending module;
the interface matching module is also used for realizing the matching transmission of the test data between the data link equipment and the LVDS receiving and sending module;
the data interpretation module is further configured to receive the test data transmitted from the data link device and sent by the LVDS receiving and sending module, and perform data correctness check according to the test data transmitted by the data link device and the original test data.
Further, the device also comprises a display module;
the display module is used for displaying the interpretation result of the data interpretation module.
Further, the device also comprises a storage module;
the storage module is used for storing temporary processing data generated by the protocol receiving processing module and the data interpretation module.
Further, the device also comprises a power supply module;
the power module is used for providing secondary voltage for the test system.
Further, the raw test data includes data input from the external protocol receiving processing module and data generated by the protocol receiving processing module.
A data link equipment bus test method comprises a CAN receiving and sending module, a TLK2711 receiving and sending module, an 422/485 receiving and sending module, a protocol receiving and processing module, a data interpretation module and an interface matching module;
the CAN receiving and sending module, the TLK2711 receiving and sending module and the 422/485 receiving and sending module are respectively used for setting CAN protocol transmission parameters, TLK2711 protocol transmission parameters and 422/485 protocol transmission parameters;
the protocol receiving and processing module sends original test data to the data interpretation module, frames the original test data according to a CAN protocol, a TLK2711 protocol and a 422/485 protocol respectively, correspondingly sends the framed test data to the CAN receiving and sending module, the TLK2711 receiving and sending module and the 422/485 receiving and sending module, the CAN receiving and sending module, the TLK2711 receiving and sending module and the 422/485 receiving and sending module send the framed test data to the data link equipment through the interface matching module, and simultaneously the protocol receiving and processing module splits the framed test data sent by the CAN receiving and sending module, the TLK2711 receiving and sending module and the 422/485 receiving and sending module according to the CAN protocol, the TLK2711 protocol and the 422/485 protocol respectively and sends the split test data to the data interpretation module;
and the data interpretation module performs data correctness check according to the split test data and the original test data.
Furthermore, the system also comprises an LVDS receiving and sending module;
the LVDS receiving and sending module sets LVDS protocol transmission parameters;
the protocol receiving and processing module sends the original test data to the LVDS receiving and sending module, the LVDS receiving and sending module sends the original test data to the data link equipment through the interface matching module, meanwhile, the data interpretation module receives the test data sent by the LVDS receiving and sending module and transmitted from the data link equipment, and data correctness inspection is carried out according to the test data transmitted by the data link equipment and the original test data.
An apparatus comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing a data link apparatus bus test method when executing the computer program.
Compared with the prior art, the invention has at least the following beneficial effects:
the bus test system of the data link equipment can generate customized original test data according to the requirement of a user, the bus data can be correctly transmitted in various bus forms, the bus data is sent to the data link equipment to be tested for real-time testing, and the bus data fed back by the data link equipment to be tested can be received, the data is screened according to the bus type, the inside of the system judges the correctness and regularity of the effective data, and gives the judgment result, the invention can provide various convenient bus interface tests, interface level tests and bus data protocol correctness tests, perfusion data sent by the data source has higher integration level and higher test efficiency through functions of bus transmission correctness test and the like, the method can provide an effective and quick test solution for the data link equipment test, and improve the development efficiency. In addition, the invention can also display the interpretation result in real time.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic block diagram of an application scenario of a bus test system for data link equipment according to the present invention;
FIG. 2 is a block diagram illustrating the principle components of a data link device bus test system according to the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As a specific embodiment of the present invention, with reference to fig. 1 and fig. 2, a data link device bus test system includes a CAN receiving and sending module, a TLK2711 receiving and sending module, an LVDS receiving and sending module, an 422/485 receiving and sending module, an interface matching module, a protocol receiving and processing module, a data interpretation module, a display module, a storage module, and a power module, where the system may be connected to a preceding-stage data source and to a subsequent-stage data link device to be tested, and the CAN receiving and sending module of the present invention supports one path of CAN data receiving and one path of CAN data sending capabilities, is connected to the protocol receiving and processing module, and is connected to the interface matching module. The TLK2711 receiving and sending module supports one channel of TLK2711 data receiving and one channel of TLK2711 data sending capacity, is connected with the protocol receiving and processing module and is connected with the interface matching module. The LVDS receiving and sending module supports the parallel 16-bit data receiving and parallel 16-bit data sending capabilities, is connected with the protocol receiving and processing module, is connected with the interface matching module and is connected with the data interpretation module. 422/485 the receiving and sending module supports one path 422 data receiving and one path 422 data sending ability, supports one path 485 data receiving and one path 485 data sending ability, connects with the protocol receiving and processing module, connects with the interface matching module. The interface matching module is connected with the data link equipment through an external connector and mainly completes functions of level matching, data screening and the like of each interface chip, and is connected with the CAN receiving and sending module, the TLK2711 receiving and sending module, the LVDS receiving and sending module and the 422/485 receiving and sending module and carries out bidirectional data interaction. The protocol receiving and processing module mainly realizes framing of various bus protocols, protocol packing framing and splitting are carried out on original test data according to task requirements, and when a large amount of data are processed, the protocol receiving and processing module can carry out bidirectional data interaction with the storage module to buffer temporary data. The data interpretation module receives input data from the protocol receiving and processing module and the LVDS receiving and sending module and sends an interpretation result to the display module. The display module is used for displaying the test result, and externally displaying whether the test result is correct or not in a visual mode, and is connected with the data interpretation module and used for receiving the judgment result from the data interpretation module. The storage module completes the caching of the temporary processing data, is connected with the protocol receiving processing module, is connected with the data interpretation module, performs bidirectional data exchange with the protocol receiving processing module and the data interpretation module, and completes the caching task of the temporary data in the protocol processing and data interpretation processes. The power supply module provides stable power supply output for the whole system, mainly outputs +5V secondary voltage, and is combined with other power supply conversion modules to output various secondary electric signals required by the whole system.
Specifically, the method comprises the following steps:
the CAN receiving and sending module mainly completes the setting of CAN protocol related transmission parameters, in particular to the setting of CAN station addresses and filtering parameters in the CAN receiving and sending module, realizes the basic functions of data type frames, receiving buffer zones, receiving straight pins, bus resetting and the like, completes the agreement of response sequence formats of receiving frames and sending frames and ensures the correct transmission of the CAN receiving and sending module.
The TLK2711 receiving and transmitting module mainly completes the setting of the related transmission parameters of the TLK2711 protocol, in particular, the TLK2711 receiving and transmitting module completes the functions of high-speed parallel-serial/parallel-serial conversion, data pre-emphasis and the like, sets TXclk and RXclk clock signals, sets an Enable enabling signal and an LCKREFN locking signal, generates proper TKLSB and TKMSB signals according to protocol convention, receives and replies the RKLSB and RKMSB signals, and completes the data setting conforming to the transmitting and receiving protocol of the TLK 2711.
The LVDS receiving and sending module mainly completes the setting of LVDS related transmission rate parameters and the like, in particular, the module completes the rate setting of LVDS sending or receiving data, selects effective data bits, enables the setting of forward and backward travel time of signals, enables the filtering of signal burrs and the like, and ensures the reliable transmission of data.
422/485 receiving and sending module, which mainly completes 422/485 serial protocol related transmission parameter setting, specifically 422/485 receiving and sending module internal completing baud rate setting, Enable signal setting, character format setting, transmission sequence setting during multi-byte transmission, and appointing key information such as data length, data type identification, etc.
The interface matching module is connected with the data link equipment to be tested through an external connector, mainly completes the functions of level matching, data screening and the like of each interface chip, screens input and output data of various buses through the connection relation of the connector, performs level matching on the interface chips, ensures that the data levels meet the receiving requirements, and switches the data from the front-end module and the rear-end module.
The protocol receiving and processing module mainly realizes framing of various bus protocols, carries out protocol packing on original test data according to task requirements, completes framing and splitting of a CAN protocol, a TLK2711 protocol and a 244/485 protocol, CAN receive the original data filled from an external data source as the test data inside the protocol receiving and processing module, CAN also automatically generate local data with a certain rule as the test data, and CAN be cached in the storage module, therefore, the protocol receiving and processing module has two generation modes of the original data and has higher test flexibility.
And the data interpretation module is used for finishing the inspection of the correctness of the original test data transmitted by various buses, specifically judging the regularity (accumulation or decrement and the like) of the original test data and giving a judgment result. The data interpretation module can perform regular interpretation on both the two types of original test data, can perform interpretation on perfusion data of a data source and the data source locally generated by the protocol receiving and processing module, and can store template data in the storage module for data comparison.
Preferably, the storage module is mainly used for assisting the protocol receiving and processing module and the data interpretation module in data caching, storing temporary data, data templates and the like in the processing process, and performing corresponding process control through a data bus, an address bus and a read-write command.
The display module is used as a medium for outputting results, the interpretation results are visually displayed in a liquid crystal display and signal lamp mode, so that testers can intuitively interpret the interpretation results, and the display module can accumulatively display the interpretation results and display the interpretation results in a classified mode when a system is tested for a long time, so that the display module has the characteristics of convenience, convenience and clearness.
In conclusion, the data link equipment bus test system provided by the invention can be used for testing various bus protocols and testing the correctness of data transmission, and effectively improves the test efficiency of data link products.
The following provides an embodiment, and details of specific processes and methods of data testing in different test modes and different bus protocols are described:
(1) CAN interface test mode and method
When sending test, the data source generates original test data (accumulation number) and transmits the data to the protocol receiving and processing module, in the protocol receiving and processing module, the original accumulation number is subjected to protocol framing and packaging according to the appointed CAN protocol, protocol words are added before and after the original accumulation number, the original test data is arranged into framed test data which accords with the appointed protocol format, then the framed test data is transmitted to the CAN receiving and transmitting module, the CAN module completes parameter setting such as transmission rate, verification and the like, the test data is transmitted to the interface matching module, the interface matching module completes data output, the whole transmitting process is completed, the transmitted data is received by the data link equipment to be tested and is used as the data source of the data link equipment to be tested.
When receiving the test, the interface matching module firstly receives the test data transmitted by the data link equipment, the interface matching module finishes screening, the test data is returned to the CAN receiving and transmitting module, the CAN receiving and transmitting module carries out the process test of CAN rate, check and the like, then the test data is sent to the protocol receiving and processing module, the protocol receiving and processing module carries out protocol splitting according to the CAN protocol, original test data are split from the framed test data and sent to the data interpretation module, the module carries out correctness test on the accumulation rule of the original test data, the final test result is sent to the display module, and the display module finally displays the test result of the received data.
(2) TLK2711 interface test mode and method
During sending test, a data source generates original test data (an accumulated number), the original test data (the accumulated number) is transmitted to a protocol receiving and processing module, in the protocol receiving and processing module, protocol framing and packaging are carried out on the original accumulated number according to an agreed TLK2711 protocol, protocol words are added before and after the original accumulated number, the original test data are arranged into framed test data which accord with an agreed protocol format, then the framed test data are transmitted to a TLK2711 receiving and transmitting module, parameter setting such as TLK2711 module clock rate, calibration and the like is completed through the module and are transmitted to an interface matching module, data output is completed through the interface matching module, the whole transmitting process is completed, the transmitted data are received by data link equipment to be tested and serve as a data source of the data link equipment to be tested.
When receiving the test, the interface matching module firstly receives the test data transmitted by the data link equipment to be tested, the interface matching module finishes screening, the test data is sent back to the TLK2711 receiving and transmitting module, the TLK2711 receiving and transmitting module carries out TLK2711 speed, verification and other process tests, then the test data is sent to the protocol receiving and processing module, the protocol receiving and processing module carries out protocol splitting according to the TLK2711 protocol, original test data is split from the test data after framing, the original test data is sent to the data interpretation module, the accumulation rule of the original test data is checked correctly in the module, the final test result is transmitted to the display module, and the display module finally displays the test result of the received data.
(3) LVDS interface test mode and method
When the LVDS parallel test data is transmitted and tested, LVDS parallel test data (original test data) is directly generated in the protocol receiving and processing module, for test simplification, protocol packing and framing are not carried out on the LVDS parallel test data, then the parallel test data is directly transmitted to the LVDS receiving and transmitting module, parameter setting such as clock rate, calibration and the like of the LVDS module is completed by the LVDS parallel test data, the LVDS parallel test data is transmitted to the interface matching module, data output is completed by the interface matching module, the whole transmitting process is completed, and the transmitted data is received by the data chain equipment to be tested and used as a data source of the data chain equipment to be tested.
When receiving and testing, the interface matching module firstly receives test data transmitted by the data link equipment to be tested, the interface matching module finishes screening, the test data is sent back to the LVDS receiving and sending module, the LVDS receiving and sending module carries out LVDS speed, verification and other process tests, then the test data is directly sent to the data interpretation module, the correctness of the rule of the LVDS parallel test data is tested in the module, the final test result is transmitted to the display module, and the display module finally displays the test result of the received data.
(4)422/485 interface test mode and method
When sending test, the data source generates original test data (decrement number), and transmits the original test data to the protocol receiving processing module, in the protocol receiving processing module, the original decrement number is subjected to protocol framing and packaging according to the agreed 422/485 serial protocol, protocol words are added before and after the original decrement number, the original test data is arranged into framed test data in accordance with the agreed protocol format, then the framed test data is transmitted to the 422/485 receiving and transmitting module, parameter setting such as 422/485 module clock rate and verification is completed by the module, the parameter setting is transmitted to the interface matching module, data output is completed by the interface matching module, the whole transmitting process is completed, and the transmitted data is received by the data chain equipment to be tested and used as the data source of the data chain equipment to be tested.
When receiving the test, the interface matching module firstly receives the test data transmitted by the data link equipment to be tested, the interface matching module finishes screening, the test data is sent back to 422/485 receiving and sending module, the receiving and sending module carries out 422/485 rate, verification and other process tests at 422/485, then the test data is sent to the protocol receiving and processing module, the protocol receiving and processing module carries out protocol splitting according to 422/485 protocol, original test data are split from the framed test data, the original test data are sent to the data interpretation module, the correctness of the rule of the original test data is checked in the module, the final test result is sent to the display module, and the display module finally displays the test result of the received data.
The present invention provides, in one embodiment, a computer device comprising a processor and a memory for storing a computer program comprising program instructions, the processor for executing the program instructions stored by the computer storage medium. The Processor may be a Central Processing Unit (CPU), or may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable gate array (FPGA) or other Programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., which is a computing core and a control core of the terminal, and is adapted to implement one or more instructions, and is specifically adapted to load and execute one or more instructions to implement a corresponding method flow or a corresponding function; the processor according to the embodiment of the present invention may be used for the operation of a data link device bus test method.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still make modifications or changes to the embodiments described in the foregoing embodiments, or make equivalent substitutions for some features, within the scope of the disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A data link equipment bus test system is characterized by comprising a CAN receiving and sending module, a TLK2711 receiving and sending module, an 422/485 receiving and sending module, a protocol receiving and processing module, a data interpretation module and an interface matching module;
the CAN receiving and sending module, the TLK2711 receiving and sending module and the 422/485 receiving and sending module are respectively used for setting CAN protocol transmission parameters, TLK2711 protocol transmission parameters and 422/485 protocol transmission parameters;
the protocol receiving and processing module is used for sending the original test data to the data interpretation module; the system comprises a CAN receiving and sending module, a TLK2711 receiving and sending module and a 422/485 receiving and sending module, wherein the CAN receiving and sending module is used for receiving and sending test data of the CAN, the TLK2711 protocol and the 422/485 protocol; the system comprises a CAN receiving and sending module, a TLK2711 receiving and sending module, a 422/485 receiving and sending module and a data interpretation module, wherein the CAN receiving and sending module, the TLK2711 receiving and sending module and the data interpretation module are respectively split according to a CAN protocol, a TLK2711 protocol and an 422/485 protocol;
the interface matching module is used for realizing matching transmission of test data between the data link equipment and the CAN receiving and sending module, the TLK2711 receiving and sending module and the 422/485 receiving and sending module;
and the data interpretation module is used for carrying out data correctness check according to the split test data and the original test data.
2. The data link device bus test system of claim 1, further comprising an LVDS receive-transmit module;
the LVDS receiving and sending module is used for setting LVDS protocol transmission parameters;
the protocol receiving and processing module is also used for sending the original test data to the LVDS receiving and sending module;
the interface matching module is also used for realizing the matching transmission of the test data between the data link equipment and the LVDS receiving and sending module;
the data interpretation module is further configured to receive the test data transmitted from the data link device and sent by the LVDS receiving and sending module, and perform data correctness check according to the test data transmitted by the data link device and the original test data.
3. The data link device bus test system as set forth in claim 1, further comprising a display module;
the display module is used for displaying the interpretation result of the data interpretation module.
4. The data link device bus test system of claim 1, further comprising a memory module;
the storage module is used for storing temporary processing data generated by the protocol receiving processing module and the data interpretation module.
5. The data link device bus test system of claim 1, further comprising a power module;
the power module is used for providing secondary voltage for the test system.
6. The system of claim 1, wherein the raw test data comprises data from an external input protocol receiving processing module and data generated by the protocol receiving processing module.
7. A data link equipment bus test method is characterized by comprising a CAN receiving and sending module, a TLK2711 receiving and sending module, an 422/485 receiving and sending module, a protocol receiving and processing module, a data interpretation module and an interface matching module;
the CAN receiving and sending module, the TLK2711 receiving and sending module and the 422/485 receiving and sending module are respectively used for setting CAN protocol transmission parameters, TLK2711 protocol transmission parameters and 422/485 protocol transmission parameters;
the protocol receiving and processing module sends original test data to the data interpretation module, frames the original test data according to a CAN protocol, a TLK2711 protocol and an 422/485 protocol respectively, correspondingly sends the framed test data to the CAN receiving and sending module, the TLK2711 receiving and sending module and the 422/485 receiving and sending module, the CAN receiving and sending module, the TLK2711 receiving and sending module and the 422/485 receiving and sending module send the framed test data to the data link equipment through the interface matching module, and meanwhile, the protocol receiving and processing module splits the framed test data sent by the CAN receiving and sending module, the TLK2711 receiving and sending module and the TLK 422/485 receiving and sending module according to the CAN protocol, the TLK2711 protocol and the 422/485 protocol respectively and sends the split test data to the data interpretation module;
and the data interpretation module performs data correctness check according to the split test data and the original test data.
8. The method according to claim 7, further comprising an LVDS receiving and transmitting module;
the LVDS receiving and sending module sets LVDS protocol transmission parameters;
the protocol receiving and processing module sends the original test data to the LVDS receiving and sending module, the LVDS receiving and sending module sends the original test data to the data link equipment through the interface matching module, meanwhile, the data interpretation module receives the test data sent by the LVDS receiving and sending module and transmitted from the data link equipment, and data correctness inspection is carried out according to the test data transmitted by the data link equipment and the original test data.
9. An apparatus comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements a data link device bus test method as claimed in claim 6 or 7 when executing the computer program.
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