JPH04264928A - Testing system - Google Patents

Abstract

PURPOSE:To test the receiving function of a control part to stop the operation of a device by signal input by a test program in respect of a testing system. CONSTITUTION:The title testing system is the testing system for a receiving part which reconfirms the input state of a signal prescribed time after the input of said signal, and removes a noise signal, and receives the prescribed signal, and a counting means which is installed in the receiving part and counts the number of the removed input signals, an informing means which informs a testing part when the number of relevant input signals reaches a prescribed value, and a discriminating means which is installed in the testing part and starts an external device so as to input an external signal having time width shorter than prescribed time and in addition, repeating time longer than the prescribed time to the receiving part, and decides the receiving part to be normal when information from the receiving pat is received are provided, and they are constituted so as to decide the quality of the receiving part by testing a noise removing function by the external signal.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test method in which a test program is used to test the reception function of a control section that stops the operation of a device in response to a system control signal.

In complex devices such as information processing devices, a test program is created to test the functionality of the hardware, and the device is tested using the test program.

[0003] With normal signals, a change in the signal will not make the program inoperable, but in the case of a so-called system control signal, when the signal becomes valid, the power can be turned off or the program can be reset. Stop the operation of the system (program).

[0004] For this reason, when a test program attempts to test hardware that receives a system control signal to turn off or reset the power, the test program also stops, and it may not be possible to determine whether the stoppage is due to a test or not. .

The present invention provides a test method for testing such hardware using a test program.

[0006]

2. Description of the Related Art FIG. 5 is a diagram showing an example of a test object, and FIG. 6 is a diagram showing an example of system control operation. In the information processing device 1 of FIG. 5, the output voltage of the power supply unit 3 is constantly monitored, and when the output voltage drops below a predetermined voltage,
The system control signal 32 is turned on, and the system control section 4a that receives this turns off the power to the power supply unit 3.

When testing the hardware of this information processing device 1, a test program is run on the CPU 2, and the test results are stored in a memory (not shown) and output. When the control signal 32 is turned on, the power supply unit 3 is cut off, so the test program stops running and no test results are obtained. Therefore, this system control section 4a
The tests are carried out by manually turning system control signals on and off or by lowering the power supply voltage.

The system control signal 32 is an on/off status signal, and in order to remove noise signals, the system control signal 32 is an on/off state signal, and the receiving function of the system control unit 4a is to receive the signal after a predetermined time t0 from the signal input, as shown in FIG. is rechecked, and if the signal is still being input at that point, it is recognized as the system control signal 32 and a power cut signal is sent to the power supply unit 3.

[0009]

[Problem to be Solved by the Invention] When testing hardware that performs controls such as cutting off the power supply due to a drop in power supply voltage or resetting it using an external or internal system control signal, the test program stops running. Therefore, conventionally this was done manually. For this reason, there were problems in that testing took time and the testing method became complicated.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a test method for testing a system control signal receiving function using a test program.

[0011]

[Means for Solving the Problems] In the principle diagram of the present invention shown in FIG. 1, 22 is a receiving section that reconfirms the input state of the signal after a predetermined time after the signal is input, removes noise signals, and returns a predetermined signal. receive. It also includes a counting means 24 for counting the number of removed input signals, and a notification means 23 for notifying the test section 20 when the number of input signals reaches a predetermined value.

Reference numeral 20 denotes a test section, which starts an external device 5 and inputs an external signal 30 having a time width of less than the predetermined time and a repetition time of more than the predetermined time to the receiving section 22; A determining means 21 is provided which determines that the receiving section 22 is normal when receiving the notification.

[0013]

[Operation] The present invention is an indirect test method for determining whether the reception function is good or bad by testing the noise removal function.

The test section 20 starts up the external device 5 and
Time from signal input to recheck (predetermined time) An external signal 30 having the following time width and a repetition time longer than the time width is input to the receiving unit 22.

[0015] As a result, the receiving section 22 rechecks the external signal input after a predetermined period of time has elapsed since the rise of the external signal 30, but since the time width of the external signal 30 is shorter,
Don't receive this.

The number of removed external signals is counted by the counting means 24, and when it reaches a predetermined value, the notifying means 23 notifies the test section 20. The determining means 21 of the test section 20 is
When there is a notification from the notification means 23, the receiving unit 22 is determined to be normal.

As described above, instead of inputting a normal signal, the quality of the receiving section 22 is determined by inputting a noise signal and testing its removal function.

[0018]

Embodiment FIG. 2 is a diagram showing a receiving operation during a test, FIG. 3 is a block diagram of one embodiment, and FIG. 4 is a block diagram of a system control section. In this embodiment, a test example of the receiving function of the system control section will be described in which the power supply unit 3 is disconnected by the system control signal 32 shown in FIG.

In FIG. 3, 5 is an external device, which has a pulse width t1 narrower than the recheck time t0, as shown in FIG.
A pulse train external signal 30 having a repetition time t2 longer than t0 is generated, and upon activation of the test program 6, the generated external signal 30 is input to the system control unit 4 instead of the system control signal 32. 3 is a power supply unit.

Further, in the information processing device 1, 2 is a CPU (processor unit) that executes a test program 6. 4 is a system control unit to be tested, as shown in FIG.
, a memory 12, a register 13 for issuing an interrupt to the CPU 2, a register 14 for receiving a system control signal 32 (external signal 30 during testing), a register 15 for outputting a power-off signal, and the like. Note that the register 14 holds the input state.

Here, register 1 of system control unit 4
4, an interrupt 31 is sent to the processor 10.
, the processor 10 executes the system control program 1
Start 1. As a result, system control program 1
1 reads the register 14 after measuring a predetermined time t0. If the signal input is confirmed at this point, it is recognized as the system control signal 32, a power cutoff signal is set in the register 15, and the power supply unit 3 is cut off.

[0022] If the signal input is not confirmed, it is regarded as noise and the cutting operation is not performed. The above is the operation during operation, but during testing, the following operations are performed. Figure 2
For reference, the output of the external device 5 is connected to the system control signal input terminal of the system control section 4 in advance. When the test program 6 tests the system control unit 4,
First, the external device 5 is activated, inputs the external signal 30, and then waits.

In the system control unit 4, an interrupt 31 is sent to the processor 10 at each pulse of the external signal 30 at its rising edge (falling edge in the figure), and the system control program 11 operates each time. The system control program 11 first checks the register 14 after counting a predetermined time t0. Here, since the pulse width of the external signal 30 is short, signal input is not confirmed, and this input signal is counted as noise.

In this manner, when the counted number of input signals reaches a predetermined value, for example 10,000 times, the system control program 11 sets the register 13 and issues an interrupt 31 to the CPU 2. This causes the test program 6 to operate, and the determination means 21 (FIG. 1)
is judged as good.

As described above, the present invention determines the normality of the reception function by testing the normality of the noise removal function. Note that if the power is turned off during this test or if there is no notification, it is determined that the device is defective.

[0026] In the above embodiment, power cut-off due to voltage drop was shown as an example, but hardware that performs control (power-off, reset, etc.) that stops program operation based on internal and external system control signals is also applicable. Of course, it can be applied to clothing.

[0027]

[Effects of the Invention] As explained above, according to the present invention,
This method provides a method for testing hardware that stops equipment by inputting a system control signal using a test program, and has the effect of reducing time compared to conventional tests performed manually.

[Brief explanation of the drawing]

[Figure 1] Principle diagram of the present invention

[Figure 2] Diagram showing reception operation during testing

[Figure 3]
Configuration diagram of one embodiment

[Figure 4] System control unit configuration diagram

[Figure 5] Diagram showing an example of the test target

[Figure 6] Diagram showing an example of system control operation

[Explanation of symbols]

1 Information processing device 2 CPU 3 Power supply unit 4, 4a System control section 5 External device 6 Test program 10 Processor 11 System control program 12 Memory 13, 14, 15 register 20 Test Department 21 Judgment means 22 Receiving section 23 Notification means 24 Counting means

Claims (1)

[Claims] 1. A test method for a receiving unit that rechecks the input state of the signal after a predetermined time after inputting the signal, removes noise signals, and receives a predetermined signal, the receiving unit (
22), a counting means (24) for counting the number of removed input signals, a notification means (23) for notifying the test section (20) when the number of input signals reaches a predetermined value, and the test section (20), the external device (5) is activated to send an external signal (30) having a time width less than or equal to the predetermined time and a repetition time greater than or equal to the predetermined time to the receiving section (22).
and determining means (21) for determining that the receiving section (22) is normal when the notification is received from the receiving section, and the noise removal function of the receiving section is tested by using the external signal. A test method characterized by determining pass/fail.