JPH05227258A - Protocol test equipment and its control system - Google Patents

Abstract

PURPOSE:To build up a flexible test sequence with a unique data format by providing a signal edit means, a test sequence edit means and a protocol test means in the equipment. CONSTITUTION:A transmission signal format edit means 31 and a reception signal format edit means 33 edit a transmission reception signal format. A test sequence edit means 35 edits a test sequence of a protocol test. A protocol test means 38 executes the protocol test according to a test sequence. Then the result of the protocol test and the test sequence are compared. The protocol test equipment is formed in this way to build up a unique test sequence with a unique signal format as to various protocols thereby testing the protocol.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protocol test apparatus used for testing products related to a data communication system, and in particular, a flexible test sequence including a transmission / reception timing management in an arbitrary data format can be created by a simple command. The present invention relates to a protocol test device that can be performed and has excellent operability, and a control method thereof.

[0002]

2. Description of the Related Art First, the concept of a data communication protocol will be described. When data communication is performed between two systems (nodes), a communication protocol defines how to perform connection, data exchange, disconnection, exception processing, etc. between nodes. Therefore, when a product related to the data communication system is tested, a protocol test device tests whether or not the product operates according to the agreed communication protocol.

The protocol test device serves as one of the nodes that perform communication, reproduces the communication protocol as a test sequence, and tests whether or not the EUT under test can perform data communication according to the protocol agreed upon. It is a thing.

As a conventional protocol test device, there is a commercially available protocol analyzer. This protocol analyzer connects to the EUT and becomes one of the nodes that the protocol analyzer communicates with to perform standardized protocol data communication in a standardized data format, and the product realizes the protocol accurately. It is a dedicated device for protocol test that can test whether it is doing.

[0005]

However, in the above-mentioned conventional protocol test apparatus such as the protocol analyzer, a protocol test for a standardized data format is performed, and therefore it is impossible to perform a test in an original data format. However, there was a problem that the test was not flexible.

Further, in the conventional protocol analyzer,
Because it's a test for standardized protocols,
Difficult to build complex test sequences,
There was a problem that the test was inflexible.

Further, since the conventional protocol analyzer is a device dedicated to the protocol test, there are some problems in operability such that the operation method is difficult, the display screen is difficult to see, and it is not translated into Japanese.

The present invention has been made in view of the above circumstances, and is a protocol test device capable of constructing a flexible test sequence with an original data format, being easy for an operator to operate, and being capable of performing an efficient test. And its control method.

[0009]

The invention according to claim 1 for solving the problems of the above-mentioned conventional example is a protocol test apparatus in which a signal editing means for editing a transmission / reception signal format, and a protocol test test sequence. And a protocol test means for executing a protocol test according to the test sequence edited by the test sequence editing means and comparing the test sequence with the protocol test result.

According to a second aspect of the invention for solving the above-mentioned problems of the conventional example, in the protocol test apparatus according to the first aspect, the signal format edited by the signal editing means is a signal name and the signal name. And corresponding signal data.

According to a third aspect of the present invention for solving the problems of the conventional example, in the protocol test device according to the first aspect, the test sequence edited by the test sequence editing means is a sequence count and a transmission / reception signal. It is characterized by including a name, a delay time in a transmission signal, a reception limit time of a reception signal, and a sequence command for executing a test sequence.

According to a fourth aspect of the present invention for solving the problems of the conventional example, in the control system of the protocol test device according to the first aspect, the protocol test means executes a protocol test according to a test sequence, and the protocol is executed. The test result is displayed by the sequence count, the signal type of transmission / reception, the signal data, the signal name, and the status of whether the received signal according to the test sequence is received, and the trace processing of the test sequence is performed. It is characterized by

[0013]

According to the invention described in claim 1, the transmission / reception signal format is edited by the signal editing means, the test sequence of the protocol test is edited by the test sequence editing means, and the protocol test is executed according to the test sequence by the protocol testing means. Since it is a protocol test device that compares the test sequence with the protocol test result, it is possible to construct a unique test sequence with a unique signal format for various protocols and perform a protocol test. Can be improved.

According to the second aspect of the invention, since the signal format is edited by the signal editing means with the signal name and the corresponding signal data, the unique signal format is edited. It can improve the flexibility of the test.

According to the third aspect of the present invention, the test sequence is executed by the test sequence editing means, the sequence count, the transmission / reception signal name, the delay time in the transmission signal, the reception limit time of the reception signal, and the test sequence. Since the protocol test device according to the first aspect is edited from the elements of the sequence command to be executed, it is possible to construct a unique test sequence and improve the flexibility of the test.

According to the fourth aspect of the invention, the result of the protocol test executed in accordance with the test sequence is
The trace processing according to claim 1, wherein a trace count, a transmission / reception signal type, signal data, a signal name, and a status indicating whether or not a received signal according to the test sequence is received are displayed to perform trace processing of the test sequence. Since the control method of the protocol test device is used, the test sequence and the test result can be easily compared, and the protocol test can be performed efficiently.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. First, the concept of the protocol test will be described with reference to FIG. FIG. 1 is a transition diagram of signal exchange for explaining the concept of a protocol test in a protocol test device according to an embodiment of the present invention.

For example, as shown in FIG. 1, an incoming call signal is transmitted from a master unit (protocol test apparatus of this embodiment) to a slave unit (test device), and an incoming call response signal is received before an incoming call is received. It is assumed that the protocol is such that it is normal to transmit a yes and receive a connection completion signal from the slave within 1 second after the transmission.

Therefore, if the connection completion signal is not received within the time limit after the call acceptance signal is transmitted from the protocol test apparatus of this embodiment to the EUT, or if a signal other than the connection completion signal is received, It is possible to determine that the trial machine is causing an abnormal operation.

Next, the configuration of the protocol test apparatus and its related equipment of this embodiment will be described with reference to FIG. FIG. 2 is a schematic diagram of the configuration of the protocol test apparatus and its related equipment of this embodiment. The protocol test apparatus 20 of this embodiment is a personal computer (PC) 21.
And an interface board 22 for data communication that conforms to the communication protocol of the EUT 23 to be tested, and is connected to the EUT 23 by a line.

The PC 21 in the protocol test apparatus of this embodiment is for performing editing of data transmitted / received with the EUT 23, editing of test sequences, control of test sequences, file management of test sequences, and the like. As described above, the PC is used as the protocol test device instead of the protocol analyzer because the protocol test can be performed in the original data format, and the test sequence is flexibly constructed to improve the operability of the device. Is.

Next, the functional configuration of the protocol test program used in the protocol test apparatus of this embodiment will be described with reference to FIG. FIG. 3 is a functional block diagram of the protocol test program of this embodiment.

Protocol test program 3 of this embodiment
0 is composed of five means, a transmission signal format editing means 31, a reception signal format editing means 33, a test sequence editing means 35, a protocol test means 38, and a test sequence managing means 40.

Each of the above means is realized by a dedicated window, and the transmission signal format window 3 for the transmission signal format editing means 31 is provided.
2, a received signal format window 34 for the received signal format editing means 33, and a test sequence window 36 for the test sequence editing means 35.
There is a test sequence trace window 39 for the protocol test means 38. The test sequence editing means 35 is provided with a simple sequence command 37 for controlling the test sequence.
Note that these windows are realized on the display of the PC 21 of the protocol test device of this embodiment.

Next, the outline of each means in the protocol test program of this embodiment will be described. The transmission signal format editing means 31 is the protocol test device 2
It is means for setting the signal name and the data format of the normal data and the abnormal data for the signal transmitted from 0. That is, the edit setting of the data format regarding the transmission signal is performed. The transmission signal edited here is used when the test sequence editing means 35 edits the test sequence and when the protocol test means 38 displays the test result.

FIG. 4 is a diagram showing an example of editing the transmission signal format on the transmission signal format window 32. The transmission signal format window 32 is in the form of a table including a sequence number column, a signal name column, a normal data column and an abnormal data column. Signal name "US
"ERS DATA" sets the format for each signal according to the EUT. Further, since each transmission signal may use normal data and abnormal data in a mixed manner, the format of the normal data and abnormal data is created and set for the signal name.

The received signal format editing means 33 creates and sets the signal name and the corresponding data format of the signal received by the protocol test device 20 from the EUT 23. The received signal edited here is used when the test sequence is edited by the test sequence editing means 35 and the test result is displayed by the protocol test means 38.

FIG. 5 is a diagram showing an example of editing the received signal format on the received signal format window 34. The reception signal format window 34 is in the form of a table composed of a sequence number column, a signal name column and a data format column, and sets the data format for the signal name. Also, in the signal name, "US
The format of "ERS DATA" is set for each signal according to the EUT.

The test sequence editing means 35 matches the communication protocol of the EUT 23 to be tested, and the signal flow of the test communication between the protocol test device 20 and the EUT 23, the transmission delay time and the reception timeout. It is a means for creating a test sequence in which time and the like are set.

The test sequence includes a sequence count (CNT), transmission data set by the transmission format editing means 31, transmission delay time (DELAY),
The reception data set by the reception format editing means 33, the reception time-out time (TMOUT), and the sequence command 37 for controlling the sequence can be combined and flexibly created.

The sequence command 37 includes the following. END Test sequence end JUMP *** Specified sequence *** Count unconditionally JUMP INT0-9 *** Declares interrupt reception for specified data. When specified data is received, go to specified sequence ***
UMP OFF INT0-9 INT0-9 Command release

The test sequence is executed at every sequence count, and progresses from a young number to an old number, and when an END command is detected, when the sequence command indicates the final sequence count, or a time limit is set in the test sequence, When the test sequence is not completed within the time limit, the protocol test is completed.

FIG. 6 shows the test sequence window 36.
It is a figure which shows the example of a test sequence edit in. The test sequence window 36 displays the sequence count (CN
It is a tabular window composed of a T) column, a sequence command column, a transmission data column, a transmission delay (DELAY) column, a reception data column, and a reception timeout (TMOUT) column.

A count is pre-assigned to the sequence count column, and the sequence execution flow is set in the sequence command column using the sequence command 37 described above. In the transmission data field, input the transmission data with the signal name set by the transmission format editing means 31,
In the transmission delay column, the delay when transmitting the transmission data is set in units of 10 ms. The received data is entered in the received data column with the signal name set by the received data editing means 33, and the time limit of the received data is set in 10 ms units in the received timeout column.

The test sequence of the creation example of FIG. 6 will be specifically described. When the count is "000", "incoming call" data is transmitted as transmission data. Count "00
In "1", a time limit of 3 seconds is set for the received data "incoming call response", and interrupt reception of the sequence command INT0 is set. If the "incoming call response" is received within the time limit, JUMP is performed to the count "003".

When the count is "002", the count is "00".
It loops to "1" and continues to wait for the incoming data of "incoming call response". When the count is "003", the call can be accepted after 10 ms.
Send the send data of. In the count "004",
If a time limit of 3 seconds is set for the reception data of "connection completed", interrupt reception of the sequence command INT1 is set, and if reception data of "connection completed" is received within the time limit, the count goes to "016". JUMP.

At the count "005", "connection incomplete"
A time limit of 3 seconds is set for the received data of 1), interrupt reception of the sequence command INT2 is set, and if received data of "connection incomplete" is received within the time limit, JUMP is performed to the count "007".

In the count "006", the count "00"
It loops to "3" and continues to wait for the received data of "connection completed" or "connection not completed". At the count “008”, the sequence command “OF” set at the count “004” is set.
The interrupt reception INT1 is canceled by "F INT1".

When the count is "009", the transmission data of "incoming call" is transmitted again after 10 ms, and the count is "010".
Then, if a time limit of 3 seconds is set for the received data of the "incoming call response", interrupt reception of the sequence command INT3 is set, and if the received data of the "incoming call response" is received within the time limit, it is counted. JUMP to "012".

In the count "011", the count "01"
It loops to "0" and continues to wait for the received data of "incoming call response". When the count is "012", the call can be accepted after 10 ms.
Send the send data of. In the count "013",
If a time limit of 3 seconds is set for the reception data of "connection completed", interrupt reception of the sequence command INT4 is set, and if reception data of "connection completed" is received within the time limit, the count is changed to "016". JUMP.

In the count "014", the count "01"
It loops to "3" and continues to wait for the received data of "connection completed". The count "016" corresponds to the sequence command "EN
"D" ends the test sequence.

Next, the protocol test means 38 will be described. The protocol test means 38 actually transmits data between the protocol test device 20 and the EUT 23 in accordance with the test sequence created by the test sequence editing means 35. It is a means for performing communication and displaying the result in the test sequence trace window 39.

FIG. 7 is a diagram showing a display example of the test sequence trace window 39. The test sequence trace window 39 displays the trace count column (CN
T), a T / R column, a data column, an S column, and a signal name column.

The T / R column indicates the direction of data, and "TX" is displayed for transmission from the protocol test device 20 to the EUT 23 and "RX" for reception. In the data column, the format of transmitted / received data is displayed in hexadecimal. The S column is a status indicating whether or not the designated data is received. When the data other than the designated data is received, “*” is displayed, and nothing else is displayed. In the signal name column, the transmission signal format editing means 31 and the reception signal format editing means 3 for transmission / reception data.
The signal name set by 3 and 3 is displayed.

The trace example shown in the test sequence trace window 39 of FIG. 7 is the result of executing the test sequence created on the test sequence window 36 of FIG. This will be specifically described below.

An "incoming call" signal is transmitted with a trace count "000", an "incoming call response" signal is received with a count "001", an "incoming call accept" signal is transmitted with a count "002", and a count " 003 ”receives the“ connection incompletion ”signal, the count“ 004 ”transmits the“ incoming call ”signal again,
The count "005" received an "incoming call response" signal, the count "006" transmitted an "incoming call accept" signal, and the count "007" received a "call origination" signal.

The trace count "007" should receive the "connection complete" signal in the normal protocol,
Since the "calling" signal is received, "*" is displayed in the S column. At the count “008”, the test sequence has ended due to timeout. This is because the interrupt reception of INT4 is set by setting the time limit of 3 seconds for the reception data of "connection completed" with the sequence count "013" of the test sequence of FIG.
The received data of "connection completed" cannot be received within the time limit, and the time is out, and "TMOUT 4" indicating that it is the time out of INT4 is displayed in the signal name column.

According to the result of the trace displayed in the test sequence window 38 by the protocol test means 38, it is determined that the EUT 23 has a problem near the "connection completed" signal waiting near the sequence count "013". It can be judged.

Next, the test sequence management means 40 will be described. The test sequence management means 40 is means for saving and restoring the test sequence created by the test sequence editing means 35 in a medium such as a hard disk or a floppy disk of the PC 21. ..

Next, the operation operation of the protocol test device 20 will be described. FIG. 8 is a flowchart showing an outline of the operation flow of the protocol test program. When the program starts, it waits for a key operation to select a menu (101).

When the reading of the test sequence file is selected by the operation (110), the test sequence file is read (111), and the initial state is returned. When the writing of the test sequence file is selected (120), the test sequence file is written (121) and the initial state is returned to.

When the transmission signal format edit is selected (130), a transmission format window is created (1
31), edit the transmission format data (13
2) When the editing is completed (133), the initial state is restored. When the reception signal format edit is selected (140), a reception format window is created (141), the reception format data is edited (142), and when the editing is completed (143), the initial state is restored.

When the test sequence edit is selected (15
0), create a test sequence window (15
1) The test sequence is edited (152), and when the editing is completed (153), the initial state is restored. When the start of the test sequence is selected (160), the transmission data code is converted (161) and the test sequence is executed (16).
2) When the test sequence is completed (163), a test sequence trace window of trace results is created and displayed (164), and the initial state is returned by "RETURN".

Next, the control flow of the test sequence by the protocol test means 38 will be described. 9 and 10 are flowcharts showing the control flow of the test sequence. When the program starts, the sequence trace buffer is cleared and the sequence counter is initialized (201). Then, the sequence command created by the test sequence editing means 35 is fetched according to the sequence count (202). Then, according to the sequence count, it is determined whether the fetched information is a sequence command (203), and if there is a sequence command, the control of each sequence according to each sequence command is performed.

When the sequence command is "END" (210), it means the end of the sequence, so the process moves to the process (270) of setting and recording the command in the sequence trace buffer. When the settings are recorded in the sequence to race buffer, the end of the sequence is judged (271), and since it is "END", the sequence ends.

The sequence command is "JUMP".
In the case of (220), the process proceeds to the process of setting the execution sequence count so that it becomes the count of the JUMP destination (273), and the sequence command and the like are fetched according to the newly set execution sequence count (202). Move on to processing.

If the sequence command is "INT" (230), it is set in the area in order to compare the interrupt received data preset in the test sequence window with the interrupt received data in the test. (231), the time limit (TMOU
T) is set (232) and interrupt reception is started (233)
To do.

When interrupt reception is started (233), it is judged whether the received signal is the specified interrupt signal specified in the test sequence window by comparing with the interrupt reception data set in the area (234). ), If it is a designated interrupt signal, record the setting in the sequence trace buffer (270)
Move on to. After this, since the sequence is not completed, the sequence count is set to the next count (273), and the sequence command and the like according to the new count are fetched (202).

If it is not the designated interrupt signal, it is judged whether or not the designated reception time-out has occurred (235). If the time-out has occurred, the reception time-out processing (26
Move on to 7). Then, it is set and recorded in the sequence trace buffer (270), and the sequence ends because it has timed out (271). If it has not timed out, fetch the sequence command again (202)
Move on to.

The sequence command is "OFF INT"
In the case of (240), interrupt reception is stopped (release of the specified INT command) (241), the execution sequence count is set to the next count (273), and the sequence command etc. according to the new count is fetched. (2
Move to 02).

If there is no sequence command in the sequence to be executed, it is judged whether there is transmission data (250),
If there is send data, set the send data (25
1), the transmission delay is started (252), the transmission is started (253), and when the transmission is completed (254), it is judged whether there is received data (260). When it is determined whether there is transmission data (250), if there is no transmission data, the process proceeds to determination (260) whether there is reception data without doing anything.

It is judged whether there is received data (26
0) If there is received data, it is set in the received data comparison area (261), reception is started (262), and the reception timer is activated (263). Then, the data is received (264), it is judged whether the received data is a signal designated by the sequence (265), and if it is the designated signal, the received data is set and recorded in the sequence trace buffer (270).

If the received data is not the designated data,
It is judged whether or not the reception time-out time specified in the sequence has been reached (266), and if not reached, the process returns to data reception (264). If the reception time-out time has been reached, reception time-out processing is performed (267), The setting is recorded in the sequence trace buffer (270).

When the trace is set and recorded in the sequence trace buffer (270), the sequence ends (27
1), the end of sequence count (272) is determined. In this case, since it is not ended, the execution sequence count is set to the next count (273), and the sequence command is fetched (20) according to the new count.
Return to 2).

According to the protocol test apparatus and its control method of this embodiment, the transmission signal format editing means 31 is provided.
And using the function of the received signal format editing means 33,
Since the signal format for the protocol test can be set, the protocol test can be performed in an arbitrary data format, and the protocol test can be made flexible.

Further, once the signal format is set, it is possible to handle the data with a signal name that is easy for the operator to recognize without paying attention to the detailed signal format when creating a test sequence or displaying test results. This has the effect of facilitating protocol testing.

Furthermore, since the test sequence editing means 35 can create a flexible test sequence as a simple program with the simple sequence command 37, there is an effect that the operability of the protocol test device can be improved.

Further, since the protocol test result is displayed in the test sequence trace window 39 as to whether the test sequence is performed or not, it is possible to understand at a glance how the signal is transmitted and received and where the error occurs. The effect is that the investigation can be enabled and the protocol test can be facilitated.

Further, the test sequence management means 40 can save and restore the created test sequence as a file by using the normal PC 21, so that it is convenient for patterning the test and effectively using the similar pattern.

[0070]

According to the first aspect of the invention, the transmission / reception signal format is edited by the signal editing means, the test sequence of the protocol test is edited by the test sequence editing means, and the protocol test is performed by the protocol testing means in accordance with the test sequence. Since it is a protocol test device that executes and compares the test sequence with the protocol test result, it is possible to construct a unique test sequence with a unique signal format for various protocols and perform a protocol test. There is an effect that can improve the sex.

According to the second aspect of the present invention, the signal format is edited by the signal editing means with the signal name and the corresponding signal data. Therefore, the unique signal format is edited. It is possible to improve the flexibility of the test.

According to the third aspect of the present invention, the test sequence is executed by the test sequence editing means by executing the sequence count, the transmission / reception signal name, the delay time in the transmission signal, the reception limit time of the reception signal, and the test sequence. Since the protocol test device according to the first aspect is edited from the elements of the sequence command to perform, there is an effect that a unique test sequence can be constructed and the flexibility of the test can be improved.

According to the invention described in claim 4, the result of the protocol test executed according to the test sequence is
The trace processing according to claim 1, wherein a trace count, a transmission / reception signal type, signal data, a signal name, and a status indicating whether or not a received signal according to the test sequence is received are displayed to perform trace processing of the test sequence. Since the protocol test apparatus is used as the control method, the test sequence and the test result can be easily compared, and the protocol test can be efficiently performed.

[Brief description of drawings]

FIG. 1 is a transition diagram of signal exchange according to an embodiment of the present invention.

FIG. 2 is a device configuration diagram of a protocol test device of the present embodiment.

FIG. 3 is a functional configuration block diagram of a protocol test program of the present embodiment.

FIG. 4 is a diagram showing an example of editing a transmission signal format on a transmission signal format window according to the present embodiment.

FIG. 5 is a diagram showing an example of editing a received signal format on a received signal format window according to the present embodiment.

FIG. 6 is a diagram showing an example of test sequence editing on a test sequence window according to the present embodiment.

FIG. 7 is a diagram showing an example of trace display on a test sequence trace window of the present embodiment.

FIG. 8 is a flowchart showing an outline of an operation flow of a protocol test program of this embodiment.

FIG. 9 is a flowchart showing the control flow of the test sequence of the present embodiment.

FIG. 10 is a flowchart showing a control flow of a test sequence of this embodiment.

[Explanation of symbols]

20 ... Protocol test device, 21 ... Personal computer, 22 ... Interface board, 23 ...
EUT, 30 ... Protocol test program, 31
... transmission signal format editing means, 32 ... transmission signal format window, 33 ... reception signal format editing means, 34 ... reception signal format window,
35 ... Test sequence editing means, 36 ... Test sequence window, 37 ... Sequence command,
38 ... Protocol test means, 39 ... Test sequence trace window, 40 ... Test sequence management means

Claims (4)

[Claims] 1. A signal editing means for editing a transmission / reception signal format, a test sequence editing means for editing a test sequence of a protocol test, and a protocol test according to a test sequence edited by the test sequence editing means. A protocol test device comprising a test sequence and a protocol test means for comparing the protocol test result. 2. The protocol test device according to claim 1, wherein the signal format edited by the signal editing means has a signal name and signal data corresponding to the signal name. 3. The protocol test device according to claim 1, wherein the test sequence edited by the test sequence editing means includes a sequence count, a transmission / reception signal name, a delay time in the transmission signal, and a reception time limit of the reception signal. , A sequence command for executing a test sequence, and a protocol test device. 4. The protocol test device according to claim 1, wherein a protocol test is executed by a protocol test means according to a test sequence, and the protocol test result is a sequence count, a transmission / reception signal type, signal data, and a signal name. And a status indicating whether or not a received signal according to the test sequence is received, and trace processing of the test sequence is performed, and the control method of the protocol test device is characterized.