CN110096002A - A kind of automatization test system and test method based on CANFD bus - Google Patents
A kind of automatization test system and test method based on CANFD bus Download PDFInfo
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- CN110096002A CN110096002A CN201810090273.8A CN201810090273A CN110096002A CN 110096002 A CN110096002 A CN 110096002A CN 201810090273 A CN201810090273 A CN 201810090273A CN 110096002 A CN110096002 A CN 110096002A
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- Prior art keywords
- bus
- message
- automatic test
- buffer area
- canfd
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
Abstract
The invention discloses a kind of automatization test system and test method based on CANFD bus, system includes automatic test client, CAN FD bus automated server program module, lower computer hardware circuit module and PC machine.When sending message, automatic test client will need the message sent to be transmitted to automated server, message is put into USB3.1 and sends buffer area and the message sent will be needed to be sent to lower computer hardware circuit module by USB3.1 driver, is sent in CAN FD bus via the CAN FD interface of slave computer；When receiving message, by automatic test client read request to automated server request message, the message received is had existed if receiving in buffer area in USB3.1, these messages are just transmitted to automatic test client by automated server.The present invention constructs the automatic test framework based on CAN FD network an of clear and rational, may be performed simultaneously multiple test cases, and scalability is strong, greatly reduces the automatic test difficulty to tested slave computer.
Description
Technical field
The present invention relates to electronic automation technology field more particularly to a kind of automatic test systems based on CANFD bus
System and test method.
Background technique
In the application process based on CAN FD bus, need to send and receive specific message by CAN FD bus,
To realize that the automatic test to some equipment operates.Based on the automatic test of CAN FD bus, usually for difference
Test case, specific test program is write in host computer PC, turns the interface card connecting band CAN FD of CAN FD by USB
The hardware of interface sends input of the CAN FD message as slave computer to tested slave computer, and the output of program of lower computer is logical
It crosses CAN FD message to be sent in CAN FD bus, host computer test program reads corresponding CAN FD message in CAN FD bus
Parsing obtain the output of slave computer, compared with the desired output of test case, if result unanimously if indicate test pass through,
Otherwise it tests and does not pass through, slave computer is tested by the application program at the end PC to realize.
It is existing in the prior art the disadvantage is that:
1, the above-mentioned test method based on CAN FD bus needs to write specific test program for different test cases, compiles
It writes, compile and the debug time period is longer, be unfavorable for quick test；
2, scalability is not strong, if to increase new test case, needs to modify current test program or rewrites new
Test program with meet demand；
3, automation survey cannot be carried out to slave computer by CAN FD bus come simple and quick realization by writing shell script
Examination；It is difficult to realize that automatic test alone or in combination is carried out to multiple slave computers simultaneously.
Summary of the invention
The present invention in view of the above shortcomings of the prior art, provides a kind of automatization test system based on CANFD bus
And test method, which overcome the efficiencies for encounter in automatic test course based on CAN FD bus, use
The COM technology of Windows builds automated server, so that the test program at any one end Windows can be with server
It interacts, can be run by writing test script at the end Windows to fast implement the automation based on CAN FD bus
Test.
To solve problems of the prior art, the specific technical solution of use is:
A kind of automatization test system based on CANFD bus comprising automatic test client, the total line automation of CAN FD
Server program module, lower computer hardware circuit module and PC machine；
The CAN FD bus automated server program module includes automated server, is connected with automated server
USB3.1 receives buffer area and USB3.1 sends buffer area, is connected with the reception buffer area USB3.1 and USB3.1 transmission buffer area
USB3.1 driver module；The automatic test client is surveyed by automatic test client write request and automation
It tries client read request and automated server interconnects；
The USB3.1 driver module is connected with by USB3.1 cable with lower computer hardware circuit module；The slave computer
Hardware circuit module is connected to PC machine by USB3.1 cable, while lower computer hardware circuit module passes through CAN FD bus CANH
End and the end CAN FD bus CANL are connected to other nodes in bus.
Preferred scheme, the lower computer hardware circuit module include microcontroller, USB3.1 module and CAN FD transmitting-receiving
Device；USB3.1 module one end is connected by USB3.1 cable with PC machine, and the other end is successively received with microcontroller and CAN FD
Device is sent out to be connected；The microcontroller include CAN FD controller, the CAN FD transceiver by CAN FD controller with
USB3.1 module is connected.
Further preferred scheme, the CAN FD controller are the protocol conversion chip of CAN FD bus, are used for CAN
Message and wrong frame information in FD bus feed back to microcontroller, each CAN FD controller has and CAN FD transceiver
Connected TX and RX pin.
Scheme still more preferably, other intra-nodes in the bus integrate CAN FD transceiver.
Scheme still further preferably connects at least four CAN FD controllers, each CAN FD on the microcontroller
The TX pin and RX pin of controller are separately connected the TX pin and RX pin of CAN FD transceiver, the CANH of CAN FD transceiver
End is connected to the end CAN FD bus CANH, and the end CANL of CAN FD transceiver is connected to the end CANL of CAN FD bus.
The PC machine includes at least one central processing unit, at least one PC machine internal operation automated server application journey
Sequence and at least one Automation Client test program.
The present invention also provides a kind of automated testing methods based on CANFD bus comprising following steps: automation
Connection is established with automated server after test client starting, when automatic test client needs to send CAN FD message
When, automatic test client will need the message sent to be transmitted to automation services by automatic test client write request
Device, these messages are put into USB3.1 and send buffer area by automated server, and will need to send by USB3.1 driver
Message lower computer hardware circuit module is sent to by USB3.1 cable, and be sent to via the CAN FD interface of slave computer
In CAN FD bus；When Automation Client needs to receive CAN FD message, by automatic test client read request to
Automated server request message has existed through USB3.1 cable if receiving in buffer area in USB3.1 from lower computer hardware
These messages are just transmitted to automatic test client by the message that circuit module receives, automated server.
Wherein, the process of the transmission message of lower computer hardware circuit module is, slave computer microcontroller is from message USB3.1
It sends and reads the message data to be sent from USB3.1 module in buffer area, then buffer area is sent by local CANFD
It sends function and is put into needing to be sent to the message in bus in the CAN FD transmission buffer area of CAN FD controller, via CAN
FD controller is sent on the end bus CANH CAN FD and the end CAN FD bus CANL by CAN FD transceiver.
The process that lower computer hardware circuit module receives the message from CAN FD bus is that CAN FD controller passes through
After CAN FD transceiver listens to CAN FD message, is cached to the CAN FD inside CAN FD controller and receive buffer area
It is interior, and notify microcontroller, microcontroller is by calling local CANFD to receive the message that the receiver function in buffer area will receive
It is saved in message USB3.1 to receive in buffer area, these data is uploaded to by PC machine by USB3.1 module.
By using above scheme, a kind of automatization test system and test method based on CANFD bus of the invention
Compared with prior art, it has the technical effect that
1, the present invention overcomes the efficiencies for encounter in automatic test course based on CAN FD bus, use
The COM technology of Windows builds automated server, so that the test program at any one end Windows can be with server
It interacts, is run by writing test script at the end Windows, fast implemented the automation based on CAN FD bus and surveyed
Examination, substantially increases testing efficiency.
2, the automatic test frame based on CAN FD network an of clear and rational by means of the present invention, is constructed
The automatic test server of structure, host computer can be attached with any number of test clients, be performed simultaneously multiple tests
Use-case；And test case can be the shell script for being easy to write and debug, and scalability is strong, greatly reduces to tested
Try the automatic test difficulty of slave computer.
Detailed description of the invention
Fig. 1 is total architecture diagram of upper and lower computer connection in implementation method of the present invention；
Fig. 2 is the execution logic chart of hardware circuit in implementation method of the present invention；
Fig. 3 is the execution logic chart of automated server in implementation method of the present invention.
Figure label are as follows: 101, microcontroller；102, CANFD controller；103, CANFD transceiver；104, CANFD is total
The end line CANH；105, the end CANFD bus CANL；106, USB3.1 template；107, USB3.1 cable；108, PC machine；109, the next
Machine hardware circuit template；110, other nodes in bus；201, CANFD receives buffer area；202, CANFD sends buffer area；
203, local CANFD receives buffer area；204, local CANFD transmits and receives area；205, message USB3.1 sends buffer area；206,
Message USB3.1 receives buffer area；301, CANFD bus automated server program module；302, USB3.1 driver mould
Block；303, USB3.1 receives buffer area；304, USB3.1 sends buffer area；305, automated server；306, automation client
Hold write request；307, Automation Client read request；308, automatic test client.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, below with reference to specific example and referring to attached
Figure, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and it is not intended to limit of the invention
Range.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid the present invention is unnecessarily obscured
Concept.
The present invention is based on the automatization test systems of CANFD bus comprising automatic test client 308, CAN FD
Bus automated server program module 301, lower computer hardware circuit module 109 and PC machine 108.
Wherein, the CAN FD bus automated server program module 301 include automated server 305, with it is automatic
Change the connected USB3.1 of server 305 to receive buffer area 303 and USB3.1 transmission buffer area 304, buffer with USB3.1 reception
Area 303 sends the USB3.1 driver module 302 that buffer area 304 is connected with USB3.1.The automatic test client
308 pass through automatic test client write request 306 and automatic test client read request 307 and automated server 305
Interconnection.
The USB3.1 driver module 302 with pass through USB3.1 cable 107 and 109 phase of lower computer hardware circuit module
Even；The lower computer hardware circuit module 109 is connected to PC machine 108, while lower computer hardware circuit by USB3.1 cable 107
Module 109 is connected to other nodes 110 in bus by the end CAN FD bus CANH 104 and the end CAN FD bus CANL 105,
Other nodes 110 in the bus are internally integrated CAN FD transceiver 103.
The lower computer hardware circuit module 109 includes microcontroller 101, USB3.1 module 106 and CAN FD transceiver
103；Described 106 one end of USB3.1 module is connected by USB3.1 cable 107 with PC machine 108, the other end successively with microcontroller
101 are connected with CAN FD transceiver 103.
At least four CAN FD controllers 102 are connected on the microcontroller 101, the CAN FD controller 102 is CAN
The protocol conversion chip of FD bus, for the message in CAN FD bus to be fed back to microcontroller 101 with wrong frame information, often
The TX pin and RX pin of a CAN FD controller 102 are separately connected the TX pin and RX pin of CAN FD transceiver 103, CAN
The end CANH of FD transceiver 103 is connected to the end CAN FD bus CANH 104, and the end CANL of CAN FD transceiver 103 is connected to CAN
The end CANL 105 of FD bus.
The CAN FD controller 102 is equipped with CANFD and receives buffer area 201 and CANFD transmission buffer area 202, the CAN
FD transceiver 103 is connected by CAN FD controller 102 with USB3.1 module 106, and USB3.1 module 106 and CAN FD are controlled
It is additionally provided with message USB3.1 between device 102 and sends buffer area 205, message USB3.1 reception buffer area 206, local CANFD transmission
Buffer area 204, local CANFD receive buffer area 203, and the CANFD receives buffer area 201, local CANFD receives buffer area
203, message USB3.1 receives buffer area 206 and is sequentially connected, and for the reception of message, the CANFD sends buffer area 202, sheet
Ground CANFD sends buffer area 204, message USB3.1 sends buffer area 205 and is sequentially connected, the transmission for message.
The PC machine 108 is answered comprising at least one central processing unit, at least one PC machine internal operation automated server
With program and at least one Automation Client test program.
The method of automatic test based on CANFD bus are as follows:
One, when sending message:
Connection is established with automated server 305 after the starting of automatic test client 308, when automatic test client 308
When needing to send CAN FD message, automatic test client 308 will need to send out by automatic test client write request 306
The message sent is transmitted to automated server 305, these messages are put into USB3.1 and send buffer area 304 by automated server 305,
And the message sent will be needed to be sent to lower computer hardware circuit by USB3.1 cable 107 by USB3.1 driver 302
Module 109；Slave computer microcontroller 101 in lower computer hardware circuit module 109 is sent in buffer area 205 from message USB3.1
The message data to be sent from USB3.1 module 106 is read, then sends the transmission letter of buffer area 204 by local CANFD
Number is put into needing to be sent to the message in bus in the CAN FD transmission buffer area 202 of CAN FD controller 102, via CAN
FD controller 102 is sent to the end CAN FD bus CANH 104 and the end CAN FD bus CANL 105 by CAN FD transceiver 103
On.
Two, when receiving message:
When Automation Client needs to receive CAN FD message, by automatic test client read request 307 to automation
305 request message of server has existed hard from slave computer through USB3.1 cable 107 if receiving in buffer area 303 in USB3.1
These messages are just transmitted to automatic test client 308 by the message that part circuit module 109 receives, automated server 305.
Wherein, it is that CAN FD controller 102 is logical that lower computer hardware circuit module 109, which receives the process of the message from CAN FD bus,
It crosses after CAN FD transceiver 103 listens to CAN FD message, is cached to the CAN FD inside CAN FD controller 102 and received
In buffer area 201, and notify microcontroller 101, microcontroller 101 is by calling local CANFD to receive connecing in buffer area 203
It receives function the message received is saved in message USB3.1 and receive in buffer area 206, by USB3.1 module 106 by these data
It is uploaded to PC machine 108.
It adopts with the aforedescribed process, the automatic test framework based on CAN FD network an of clear and rational can be constructed,
It is attached by the automatic test server and any number of test clients of host computer, is performed simultaneously multiple tests and uses
Example；And test case can be the shell script for being easy to write and debug, and scalability is strong, greatly reduces to tested bottom
The automatic test difficulty of machine.
The foregoing is merely illustrative of the preferred embodiments of the present invention, the protection scope being not intended to limit the invention, it is all
Within the spirit and principles in the present invention, made any modification, is all included in the scope of protection of the present invention equivalent replacement.
Claims (9)
1. a kind of automatization test system based on CANFD bus, which is characterized in that it includes automatic test client
(308), CAN FD bus automated server program module (301), lower computer hardware circuit module (109) and PC machine (108)；
The CAN FD bus automated server program module (301) includes automated server (305) and automation services
The connected USB3.1 of device (305) receives buffer area (303) and USB3.1 sends buffer area (304), buffers with USB3.1 reception
Area (303) sends the USB3.1 driver module (302) that buffer area (304) are connected with USB3.1；The automatic test
Client (308) is by automatic test client write request (306) and automatic test client read request (307) and automatically
Change server (305) interconnection；
The USB3.1 driver module (302) with pass through USB3.1 cable (107) and lower computer hardware circuit module (109)
It is connected；The lower computer hardware circuit module (109) is connected to PC machine (108) by USB3.1 cable (107), while slave computer
Hardware circuit module (109) is connected in bus by the end CAN FD bus CANH (104) and the end FD bus CANL CAN (105)
Other nodes (110).
2. a kind of automatization test system based on CANFD bus according to claim 1, which is characterized in that under described
Position machine hardware circuit module (109) includes microcontroller (101), USB3.1 module (106) and CAN FD transceiver (103)；Institute
State USB3.1 module (106) one end and be connected with PC machine (108) by USB3.1 cable (107), the other end successively with microcontroller
(101) it is connected with CAN FD transceiver (103)；The microcontroller (101) includes CAN FD controller (102), the CAN
FD transceiver (103) is connected by CAN FD controller (102) with USB3.1 module (106).
3. a kind of automatization test system based on CANFD bus according to claim 2, which is characterized in that described
CAN FD controller (102) is the protocol conversion chip of CAN FD bus, for by the message and erroneous frame in CAN FD bus
Information feeds back to microcontroller (101), each CAN FD controller (102), which has, to be connected with CAN FD transceiver (103)
TX and RX pin.
4. a kind of automatization test system based on CANFD bus according to claim 1, which is characterized in that described total
Other nodes (110) on line are internally integrated CAN FD transceiver (103).
5. a kind of automatization test system based on CANFD bus according to claim 2, which is characterized in that described micro-
At least four CAN FD controllers (102), the TX pin and RX of each CAN FD controller (102) are connected on controller (101)
Pin is separately connected the TX pin and RX pin of CAN FD transceiver (103), and the end CANH of CAN FD transceiver (103) is connected to
The end FD bus CANH CAN (104), the end CANL of CAN FD transceiver (103) are connected to the end CANL (105) of CAN FD bus.
6. a kind of automatization test system based on CANFD bus according to claim 1, which is characterized in that the PC
Machine (108) includes at least one central processing unit, at least one PC machine internal operation automated server application program and at least
One Automation Client test program.
7. a kind of automated testing method based on CANFD bus, which is characterized in that it is the following steps are included: automatic test
Connection is established with automated server (305) after client (308) starting, when automatic test client (308) needs to send
When CAN FD message, automatic test client (308) is sent needs by automatic test client write request (306)
Message is transmitted to automated server (305), these messages are put into USB3.1 and send buffer area by automated server (305)
(304), and by USB3.1 driver (302) message sent will be needed to be sent to bottom by USB3.1 cable (107)
Machine hardware circuit module (109), and be sent in CAN FD bus via the CAN FD interface of slave computer；Work as Automation Client
When needing to receive CAN FD message, request to report to automated server (305) by automatic test client read request (307)
Text has existed through USB3.1 cable (107) if receiving in buffer area (303) in USB3.1 from lower computer hardware circuit module
(109) these messages are just transmitted to automatic test client (308) by the message received, automated server (305).
8. a kind of automated testing method based on CANFD bus according to claim 7, which is characterized in that slave computer
The process of the transmission message of hardware circuit module (109) is that slave computer microcontroller (101) sends buffer area from message USB3.1
(205) message data to be sent for coming from USB3.1 module (106) is read in, then buffer area is sent by local CANFD
(204) transmission function by need to be sent to the message in bus be put into CAN FD controller (102) CAN FD send buffering
In area (202), the end CAN FD bus CANH is sent to via CAN FD controller (102), by CAN FD transceiver (103)
(104) and on the end FD bus CANL CAN (105).
9. a kind of automated testing method based on CANFD bus according to claim 7, which is characterized in that slave computer
The process that hardware circuit module (109) receives the message from CAN FD bus is that CAN FD controller (102) passes through CAN FD
After transceiver (103) listens to CAN FD message, is cached to the internal CAN FD of CAN FD controller (102) and receive buffering
In area (201), and notify microcontroller (101), microcontroller (101) is by calling local CANFD to receive in buffer area (203)
Receiver function by the message received be saved in message USB3.1 receive buffer area (206) in, pass through USB3.1 module (106) will
These data are uploaded to PC machine (108).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810090273.8A CN110096002A (en) | 2018-01-30 | 2018-01-30 | A kind of automatization test system and test method based on CANFD bus |
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| CN201810090273.8A CN110096002A (en) | 2018-01-30 | 2018-01-30 | A kind of automatization test system and test method based on CANFD bus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110941218A (en) * | 2019-12-10 | 2020-03-31 | 北京振兴计量测试研究所 | CAN bus controller test method |
| CN115657646A (en) * | 2022-12-12 | 2023-01-31 | 北京紫光芯能科技有限公司 | Test method and device of CAN controller |
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| CN103414619A (en) * | 2013-08-14 | 2013-11-27 | 上海固泰科技有限公司 | Automation control method based on FlexRay bus |
| CN103428050A (en) * | 2013-08-15 | 2013-12-04 | 上海固泰科技有限公司 | Multipath CAN (controller area network) simulation system based on CAN bus |
| CN103440218A (en) * | 2013-08-15 | 2013-12-11 | 上海固泰科技有限公司 | CAN (Control Area Network) bus monitoring method based on USB-HID (Universal Serial Bus-Human Input Device) protocol |
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| CN103414619A (en) * | 2013-08-14 | 2013-11-27 | 上海固泰科技有限公司 | Automation control method based on FlexRay bus |
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