CN101727374B - A Test Method for PS/2 Interface - Google Patents

Abstract

The invention discloses a test method of a PS/2 interface, which comprises the following steps: connecting the test module with a PS/2 interface and a USB interface of a tested host computer; starting up a test module and a tested host computer, and initializing USB interface equipment and PS/2 interface equipment of the tested host computer; the host computer to be tested sends a command to the test module through the USB interface so as to request the test module to simulate the action of the PS/2 interface equipment; the test module simulates a PS/2 protocol according to a command sent by the tested host computer and sends a corresponding PS/2 signal to a PS/2 interface of the tested host computer; and the tested host computer receives the corresponding PS/2 signal through the PS/2 interface so as to judge whether the communication of the PS/2 interface is normal or not. The test method replaces the existing manual operation test method, and can improve the test efficiency and precision.

Description

A Test Method for PS/2 Interface

technical field

The present invention relates to a testing method of a PS/2 interface, in particular to a testing method for simulating the action of a PS/2 interface device through a testing module so as to complete the testing of the PS/2 interface of a host computer under test.

Background technique

At present, the existing PS/2 interface testing method is done manually. For example, the test program prompts the tester through the screen to operate the specified external PS/2 interface device according to the screen display, such as clicking the mouse or keyboard input, and then testing the program. Read the appropriate test input to determine if the interface to a PS/2 interface device such as a keyboard or mouse is functioning properly.

However, the PS/2 interface testing method in the prior art still has defects, especially the test results are easily affected by the artificial operation of the testers, so the test accuracy is difficult to guarantee.

In addition, the testing efficiency of manual operations is not high, and it is difficult to meet the testing requirements in mass production. Therefore, there is a need for a PS/2 interface testing method capable of improving testing efficiency and accuracy, so as to replace the existing manual testing method.

Contents of the invention

In order to solve the above-mentioned problems and defects in the prior art, the object of the present invention is to provide a test method for a PS/2 interface, which is to simulate the action of the PS/2 interface device through the test module to complete the PS/2 interface of the host computer under test. 2 interface test.

A kind of testing method of PS/2 interface provided by the present invention comprises the following steps:

Connect the test module with the PS/2 interface and USB interface of the main computer under test; start the test module and the main computer under test, and initialize the USB interface device and the PS/2 interface device of the main computer under test; Send commands to the test module through the USB interface, so as to require the test module to simulate the action of the PS/2 interface device; the test module simulates the PS/2 protocol according to the command sent by the host computer under test, and sends the command to the PS/2 interface of the host computer under test. The corresponding PS/2 signal; and the host computer under test receives the corresponding PS/2 signal through the PS/2 interface, so as to judge whether the communication of the PS/2 interface is normal.

In summary, the advantages of the present invention are:

A test method of a PS/2 interface provided by the present invention, wherein, the test module communicates with the host computer under test through the USB interface, and receives the control command of the host computer under test, and then simulates the PS/2 protocol according to the control command and Send the corresponding PS/2 signal to the PS/2 interface of the host computer under test, such as the input signal of the keyboard or mouse, and then it can be virtualized as a PS/2 interface device and simulate the execution of related actions to realize the PS/2 interface of the host computer under test. 2 interface, therefore, it completely replaces the manual test operation method in the prior art, improves the test efficiency and accuracy, and realizes the automation and intelligence of the PS/2 interface test.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is the block diagram of the test flow for the PS/2 interface of the embodiment of the present invention;

Fig. 2 is the flowchart of the test method for the PS/2 interface of the embodiment of the present invention;

Fig. 3 is for the connection schematic diagram of the PS/2 interface of microprocessor control unit and tested host computer in the present invention;

Fig. 4 is the flow chart of the connection method for the microprocessor control unit and the main computer under test in the present invention;

Fig. 5 is the initialization flow diagram for the PS/2 interface equipment of tested main computer among the present invention;

Fig. 6 is a test flow chart for testing the PS/2 interface of the host computer under test by simulating the PS/2 interface device for the microprocessor control unit in the present invention.

Among them, reference signs

10 test modules

20 host computer under test

30 microprocessor control unit

Detailed ways

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a test flow of a PS/2 interface according to an embodiment of the present invention. FIG. 2 is a flowchart of a testing method for a PS/2 interface according to an embodiment of the present invention.

Please refer to Fig. 1 and Fig. 2, the testing method of PS/2 interface of the present invention comprises the following steps:

Connect the PS/2 interface and the USB interface (step 100) of test module 10 and tested host computer 20 respectively;

Then, start the test module 10 and the host computer 20 under test respectively, and initialize the USB interface device and the PS/2 interface device (step 200) of the host computer 20 under test;

The host computer 20 under test sends a control command to the test module 10 through the USB interface, thereby requiring the test module 10 to simulate the specified action of the PS/2 interface device (step 300);

The test module 10 receives the control command of the tested host computer 20 through the USB interface and analyzes it, then simulates the PS/2 protocol according to the command sent by the tested host computer 20 to generate a corresponding PS/2 signal, and transmits the corresponding PS/2 signal. 2. The signal is sent to the PS/2 interface of the tested host computer 20 (step 400);

The host computer 20 under test receives the corresponding PS/2 signal through the PS/2 interface, and calls the relevant application program interface (API) function to determine whether the communication of the PS/2 interface is normal (step 500 ).

The test module among the present invention can be microprocessor control unit (Microprocessor ControlUnit, be called for short MCU), adopt USB interface to realize communication between wherein tested main computer and microprocessor control unit, microprocessor control unit simulates PS/2 interface The pins of the clock line and the data line are connected to the PS/2 interface of the host computer under test. It will be described in detail below with reference to FIG. 3 .

Figure 3 is a schematic diagram showing the connection between the microprocessor control unit and the PS/2 interface of the tested host computer in the present invention.

Please refer to Fig. 3, PA0, PA1, PA2 and PA3 pin of microprocessor control unit 30 are connected with GND, +5V, CLK and DAT port of the PS/2 interface of the host computer under test respectively, wherein CLK port is PS/2 The signal clock line of the interface, and the DAT port is the data line.

Figure 4 is a flow chart of the connection method between the microprocessor control unit and the tested host computer in the present invention.

Please refer to FIG. 4 , insert the interface pin of the simulated mouse of the microprocessor control unit into the PS/2 mouse interface of the host computer under test through the PS/2 interface line (step 101 ). Then, the interface pin of the simulated keyboard of the microprocessor control unit is inserted into the PS/2 keyboard interface of the host computer under test through the PS/2 interface line (step 102). Finally, connect the USB interface of the microprocessor control unit to the USB interface of the tested host computer through a USB cable (step 103).

Fig. 5 shows the initialization flowchart of the PS/2 interface device of the host computer under test in the present invention.

Please refer to Fig. 5, start tested host computer and microprocessor control unit respectively, so as to complete the initialization of the virtual PS/2 interface device of tested host computer to comprise the following steps: start tested host computer (step 201); Processor control unit (step 202); The basic input and output system (BIOS) of the main computer under test enumerates PS/2 interface equipment (step 203); Basic input and output system communicates with the microprocessor control unit, and completes the PS/2 interface Devices, such as mouse and keyboard initialization (step 204); the operating system communicates with the microprocessor control unit, and further completes the enumeration of PS/2 interface devices (step 205); and, the operating system recognizes that there is a normal PS/2 Interface devices (essentially PS/2 interface devices emulated by the microprocessor control unit), such as mouse and keyboard are plugged in (step 206).

Fig. 6 is a test flow chart for testing the PS/2 interface of the host computer under test by simulating the PS/2 interface device for the microprocessor control unit in the present invention.

Please refer to Fig. 6, the program of the host computer under test sends commands to the microprocessor control unit through the USB interface, requiring completion of specific keyboard and/or mouse actions (step 301); the microprocessor control unit receives the command through the USB interface Measure the command of the main computer, and analyze (step 302); The microprocessor control unit simulates the PS/2 agreement according to the order, sends corresponding clock and data signal to the PS/2 interface of the main computer under test through the pin (step 303 ); the operating system of the tested host computer receives corresponding keyboard and/or mouse action information (step 304) through the PS/2 interface; Whether the communication is normal (step 305). If the communication is normal, it means that the PS/2 interface can be used normally; if the communication is not normal, it means that the PS/2 interface cannot be used normally. Finally, end the test of the PS/2 interface of the host computer under test (step 306).

Of course, the present invention can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the present invention without departing from the spirit and essence of the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (7)

1. the method for testing of a PS/2 interface is the action that sees through test module simulation PS/2 interfacing equipment, uses the PS/2 interface testing of accomplishing a tested principal computer, it is characterized in that the method includes the steps of:

Step 1, this test module is connected with the PS/2 interface and the USB interface of this tested principal computer; Wherein this test module is a MCU Microprocessor Control Unit; The PA0 of MCU Microprocessor Control Unit, PA1, PA2 and PA3 pin respectively with the GND of the PS/2 interface of tested principal computer ,+5V, CLK and DAT port be connected; Wherein the CLK port is the signal clock line of PS/2 interface, and the DAT port is a data line;

Step 2, this tested principal computer of startup; Start this MCU Microprocessor Control Unit; And this tested principal computer of initialization by the USB interface equipment of MCU Microprocessor Control Unit simulation and by the PS/2 interfacing equipment of MCU Microprocessor Control Unit simulation, wherein the PS/2 interfacing equipment by the MCU Microprocessor Control Unit simulation of the tested principal computer of initialization may further comprise the steps:

The basic input-output system BIOS of this tested principal computer is enumerated the PS/2 interfacing equipment by the MCU Microprocessor Control Unit simulation;

Basic Input or Output System (BIOS) is communicated by letter with this MCU Microprocessor Control Unit, and accomplishes this initialization by the PS/2 interfacing equipment of MCU Microprocessor Control Unit simulation;

Operating system is communicated by letter with this MCU Microprocessor Control Unit, and further accomplishes this enumerating by the PS/2 interfacing equipment of MCU Microprocessor Control Unit simulation; And

Operating system has identified normal PS/2 interfacing equipment, and the PS/2 interfacing equipment that wherein should discern is the PS/2 interfacing equipment of this MCU Microprocessor Control Unit simulation;

Step 3, this tested principal computer see through USB interface and send order to this test module, use the action that requires this test module simulation PS/2 interfacing equipment;

Step 4, this test module are simulated the PS/2 agreement according to the order that this tested principal computer sends, and are sent corresponding PS/2 signal to the PS/2 of this tested principal computer interface;

Step 5, this tested principal computer see through the PS/2 interface and receive corresponding PS/2 signal, and whether use the communication of judging this PS/2 interface normal.

2. the method for testing of PS/2 interface according to claim 1 is characterized in that, wherein this test module is further comprised following steps with the step that the PS/2 interface and the USB interface of this tested principal computer are connected:

The simulation PS/2 that sees through this test module of PS/2 interface line connection is interfaced to the PS/2 interface of this tested principal computer;

See through the USB interface that the USB line connects the USB interface of this test module to this tested principal computer.

3. the method for testing of PS/2 interface according to claim 1 is characterized in that, wherein this PS/2 interfacing equipment is keyboard and/or mouse.

4. the method for testing of PS/2 interface according to claim 1 is characterized in that, wherein more comprises this test module and sees through the order that USB interface receives this tested principal computer transmission, and the step of resolving.

5. whether normally the method for testing of PS/2 interface according to claim 1 is characterized in that, wherein more comprise this tested principal computer and see through and to call communication that a function judges this PS/2 interface step.

6. the method for testing of PS/2 interface according to claim 5 is characterized in that, wherein this function is an application program interface function.

7. the method for testing of PS/2 interface according to claim 1 is characterized in that, wherein said PS/2 signal is clock and data-signal.

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