JPH05158751A - Monitoring system for processing state for microcomputer - Google Patents

Abstract

PURPOSE:To easily monitor the processing state in real time during the execution of the microcomputer processing without using a microcomputer development support system. CONSTITUTION:A microcomputer 1 sends information on starting processing 1 to be outputted when executing the first processing to a processing execution recognition circuit 1. A processing execution recognition circuit 2 outputs a level '1' based on the information on starting the processing 1, and continuously outputs the level '1' until receiving the information on ending the processing 1 to be outputted by a computer 1 after the first processing. Level '0' is outputted upon receiving information on ending the processing 1. A lamp 5 is turned on only during the level '1' receiving the latch output. When the microcomputer 1 executes the second processing, the latch is performed by a processing execution recognition circuit 4. When a lamp 6 is turned on and the third processing is executed, latch is performed by the processing execution recognition circuit 4 and a lamp 7 is turned on.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microcomputer system, and more particularly to monitoring the status of microcomputer processing.

[0002]

2. Description of the Related Art In the conventional processing state monitoring method, the processing state is monitored by checking the program execution state using a microcomputer development support device.

[0003]

In the conventional processing state monitoring system, a microcomputer development support device is required for each type of microprocessor used in the microcomputer system. Further, there is a problem that the operation of the microcomputer development support device is complicated and it takes a long time to investigate the execution status, so that the processing status cannot be monitored in real time during the processing execution of the microcomputer.

An object of the present invention is to provide a processing state monitoring system of a microcomputer for monitoring the processing state of a program in a microcomputer system.

[0005]

According to the processing state monitoring system of a microcomputer of the present invention, a plurality of processing executions having a latch function which is assigned corresponding to each processing of a program of the microcomputer and which can be controlled by the program are executed. It has a recognition circuit and a display device corresponding to the process recognition circuit that visually displays the latch information output by the process execution recognition circuit, and corresponds by the process execution start information that the program outputs for each process execution. The operation is continued until the processing execution recognition circuit operates and receives the processing execution end information output every time the processing ends, and the information is visually displayed on the corresponding display device by the latch information output from the processing execution recognition circuit.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a flow chart of a processing state monitored program, and FIG. 3 is a diagram showing output waveforms of the processing execution recognition circuit of FIG.

The present embodiment shown in FIG. 1 corresponds to each processing of a program included in the microcomputer 1, detects a processing execution state thereof, and outputs a detection result to a display such as a lamp. It consists of 3 and 4. Here, it is assumed that the program included in the microcomputer 1 is composed of three processes and is programmed so that the process states are sequentially output to the process execution recognition circuits 2, 3 and 4 from the first process.

The microcomputer 1 first executes the process 1
2 is executed, a start signal of the process 1 is output to the process execution recognition circuit 2 as shown in FIG. 2 (S1).
1). The process execution recognition circuit 2 operates upon receiving the process 1 start signal, outputs level 1 and lights the lamp 5, as shown in FIG. The program is executing process 1 (S1
In 2), the process execution recognition circuit 2 latches and continuously outputs level 1 as shown in FIG. When the microcomputer 1 finishes the first process 1 (S12), it outputs a process 1 end signal (S13). The process execution recognition circuit 2
Receiving this end signal, the latch is released as shown in FIG. 3, level 0 is output, and the lamp 6 is turned off.

Subsequently, when the microcomputer 1 executes the program of the process 2, the process execution recognition circuit 3 operates upon receiving the process 2 start signal, outputs level 1 as shown in FIG. Light. While the program is executing process 2 (S22), the process execution recognition circuit 3 latches and continuously outputs level 1 as shown in FIG. The microcomputer 1 performs the second processing (S22)
When the process ends, the end signal of the process 2 is output (S2
3). The process execution recognition circuit 3 receives this end signal and
As shown in, the latch is released, level 0 is output, and the lamp 6 is turned off.

The same operation is repeated for the next processing 3. Note that in FIG. 3, the operations of the above-described processes 1 to 3 are sequentially executed at time t1, and at time t2, the above-described process 1 is ended and the process 2
Indicates that it is continuing. In this way, when each process of the program is executed, the lamp corresponding to the process currently being executed is turned on, so that it is possible to identify the parallel running of two or more processes or the unfinished process due to a bug in the program.

The case where the microcomputer 1 executes a program including three processes has been described above, but the present invention does not limit the number of program processes.

[0012]

As described above, the present invention has an effect that the processing state can be easily monitored in real time during the processing execution of the microcomputer without using the microcomputer development support device.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flow chart of a monitored program.

FIG. 3 is a diagram showing an output waveform of a process execution recognition circuit of FIG.

[Explanation of Codes] 1 Microcomputer 2, 3, 4 Processing execution recognition circuit 5, 6, 7 Lamp

Claims (1)

[Claims] 1. A plurality of process execution recognizing circuits each having a latch function which is assigned corresponding to each process of a program of a microcomputer and which can be controlled by the program, and visible latch information output by the process execution recognizing circuit. A display device corresponding to the process recognition circuit for displaying, and the corresponding process execution recognition circuit operates according to the process execution start information output by the program each time the process is executed, and outputs each time the process ends. A processing state monitoring system for a microcomputer, characterized in that the above-mentioned operation is continued until the processing execution end information is received, and the information is visually displayed on a corresponding display device by the latch information output from the processing execution recognition circuit.