JPH08166871A - Control method for electrical equipment - Google Patents

Abstract

PURPOSE: To improve a program and facilitate its reuse by constituting a ROM and CPU which has necessary functions into a one-chip IC as a microcomputer. CONSTITUTION: The ROM has a sequence chart table 400 wherein the processing procedure of the CPU is described and a command group 600 for unit functions constituting the processing procedure, and the CPU has an interpreting program 100 which interprets the descriptions of the sequence table 400 and command group 600 and executes them. At least the ROM and CPU having those functions are constituted into the one-chip IC as a microcomputer, which controls operation. Consequently, when the CPU executes the interpreting program 100, processes are executed according to the procedure described in the sequence chart table 400. Consequently, the analysis of the program list, control to be provided, and the rearrangement and alteration of the functions are easily coped with.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of controlling electric equipment by a microcomputer.

[0002]

2. Description of the Related Art Some electric appliances such as a radio receiver, a CD player, and a fully automatic washing machine have a built-in microcomputer, which controls an operation mode and the like.

As such a microcomputer, one in which main circuits such as a CPU, a ROM, a RAM and a port are integrated into one chip is generally used.

[0004]

By the way, in the above-mentioned microcomputer, the program executed by the CPU is written in the ROM, but the program does not pay attention to the hierarchization and the componentization of the structure. If written, it generally results in poor structural features and consistency. Further, in such a program, the processing in various layers and the processing of various functions are often described in disorder.

For this reason, when analyzing such a program for reuse, it is difficult to know the processing content from the structural characteristics.

Furthermore, when a part of the function is changed, the processing contents are often scattered on the program list and the separability from other functions is often poor, so that the changing operation itself is difficult and other It is also difficult to infer the range of influence for the part.

That is, the analysis work is difficult.・ Change work is difficult.・ It is difficult to limit the scope of change.

Due to these three factors, it is necessary to analyze almost the entire area of the program and re-evaluate all the functions even if a part of the program is originally changed. In the past, there has been a tendency for such programs to have poor reusability and maintainability.

The present invention is intended to solve such a problem.

[0010]

Therefore, in the present invention, when the reference numerals of the respective parts correspond to the embodiments described later, the ROM stores the table 4 in which the processing procedure of the CPU is described.
00 and a processing group 600 of unit functions that make up the processing procedure
And an interpretation program 100 in which the CPU interprets and executes the description of the table 400 and the processing group 600, and at least the ROM and the CPU are integrated into one chip IC as a microcomputer, and the operation is controlled by this microcomputer. It was done like this.

[0011]

When the CPU executes the interpretation program, the processing is executed according to the procedure described in the sequence chart table 400.

[0012]

【Example】

[Definition of Terms] Terms used in the following description are defined as follows. Sequence: An individual function to be realized. Phase: A stepwise division is provided in the sequence processing process. The individual stage. Command: An individual processing unit to be executed in a phase.

[Explanation of Target Program] Here, a microcomputer incorporated in a receiver of a synthesizer system and a routine for changing the reception frequency by a manual operation are described. That is, in the synthesizer type receiver,
Since the frequency division ratio of the PLL variable frequency divider circuit corresponds to the reception frequency, when a key operation for changing the reception frequency is performed, new frequency division ratio data is created according to the key input, and this frequency division ratio is used. Data is set in the variable frequency dividing circuit.

FIG. 13 shows an example of a processing procedure of the CPU in the case of the manual channel selection, and each step is composed of one or a plurality of commands.
That is, in this example, step 10 is a set of a plurality of commands and at the same time one sequence, and in this step 10, preprocessing such as turning on muting and maximizing reception sensitivity is executed. To be done.

Further, the following steps 11 and 12 are a command or a group thereof, and both steps are 1
It consists of two phases. Then, in step 11, a time is waited until the operation of the circuit is stabilized, and in step 12, data of a new frequency division ratio is created and is transmitted to the variable frequency division circuit of the PLL.

Further, steps 21 and 22 are likewise commands or a group thereof, respectively, and both of them constitute one sequence. Then, in step 21, a time waiting is performed, and in step 22, the timer is set.

Similarly, steps 31 and 32 are commands, respectively, and both constitute one sequence. Then, in step 31, data indicating whether or not the PLL is locked is received, and steps 31 and 32 are repeated until the lock of the PLL is confirmed in step 32.

Further, step 41 is a set of commands and constitutes one sequence.
Then, in this step 41, post-processing for the PLL is performed.

The step 51 is also a group of commands and constitutes one sequence. Then, in this step 51, post-processing such as storing the data of the current reception frequency in the RAM as the last channel (the frequency received when the power is turned off) and turning off the muting is executed. It

Therefore, according to this routine, the frequency division ratio of the variable frequency dividing circuit of the PLL is changed in response to the key operation, and as a result, the reception frequency is changed.

[Structure Contents of Target Program] The target program is described in, for example, an assembly language, and includes the following (1) to (6). (1) Interpretation program 100 This is the main routine that controls the program system based on the program structure. Therefore, the interpretation program 100 is configured, for example, as shown in FIGS. 1 and 2, and details will be described later, but when a sequence is designated and executed, the phases included in the sequence are sequentially interpreted. , In each phase, the commands included in that phase are sequentially called and executed.

(2) Sequence search table 200 This is a table for searching a sequence to be executed. For example, as shown in FIG. 3, the sequence name (or sequence number) and the phase in the sequence are registered. It has a table head address and a table address.

FIG. 7 shows the sequence search table 20.
An example of 0 is shown by a list, and each function is described as a label. Incidentally, in the case of the manual channel selection shown in FIG.

(3) Phase registration table 300 This is a table in which the phases included in each sequence are registered, and, for example, as shown in FIG. 4, it has the start address of each phase in the phase order. For example, if the table 300 in the case of manual tuning is shown by a list,
This is as shown in FIG.

(4) Sequence Chart Table 400 This is a table in which command names (or command numbers) of commands executed in each phase are described in the order of the commands, as shown in FIG. 5, for example. For example, FIG. 9 shows a list of the table 400 in the case of manual channel selection.

As is clear from these figures, the contents of the table 400 correspond to the processing procedure of FIG. For example, the content of the label cd_man_p0 is Step 10
And the contents of the label cd_man_p1 correspond to steps 11 and 1.
Corresponds to 2.

(5A) Command real program part address table 500 (5B) Command name definition table 550 The command real program part address table 500 is a table listing the real addresses at the beginning of each command, as shown in FIG. 6A. . However, the start address is
Since a specific value is given by assembling, it is not necessary to consider the start address when writing a program.

Therefore, the command name definition table 550
Is prepared. In this table 550, command names are listed as labels, and, for example, as shown in FIG. 6B, correspondences between command names, command numbers, and addresses in the table 500 are shown. Then, at the time of assembly, the label is converted into a command number (pointer), and this command number is stored in the table 500.
Is converted into an address at which the head address of each command is located, and this is registered in the table 500.

10 and 11 show examples of the tables 500 and 550 in the case of manual channel selection. As is apparent from the above, the command name definition table 550 is not used in the final program. ,
Although not coded, the command actual program part address table 550 will be coded.

(6) Command group 600 This is, for example, as shown in the partial list of FIG. 12, the content of each command is described in the assembly language in a subroutine format.

Actually, the above programs and tables 100 to 500 (command name definition table 5
(Excluding 50) is assembled into a machine language code, and the code is written in the ROM incorporated in the one-chip microcomputer. Then, the contents of the ROM are executed by the CPU according to the interpretation program 100 as follows.

[Program Processing Operation] The case where a manual channel selection key operation is performed will be described below as an example. That is, when a key operation for manual channel selection is performed, the interpretation program 100 is called for a predetermined address in the RAM as follows: Sequence = “Manual channel selection” Phase = 0 (initial value) .

Then, the process for the program 100 starts from step 101, and in step 102, the initially set sequence name "manual tuning" is fetched, and then in step 103, the sequence search pointer SRCH is set to the first The second (SRCH = 1) is set. Then, in step 104, the sequence name “manual tuning” fetched in step 102
Is checked whether it is registered in the position indicated by the search pointer SRCH in the sequence search table 200.

If not registered, the process proceeds from step 104 to step 105, in which the search pointer SRCH is advanced by one, and then in step 106, the position indicated by the search pointer SRCH is sequence searched. It is checked whether or not the end position of the table 200 is exceeded, that is, whether or not the sequence name fetched in step 102 has been searched for all of the sequence search table 200, and the search has been performed for all. If not, the process returns to step 104.

When all the sequence search tables 200 are searched in step 106, the process proceeds from step 106 to step 107, and the program 100 is terminated.

Thus, the sequence search table 200
Then, the default sequence name "manual tuning" is searched.

When the sequence name is found,
The process proceeds from step 104 to step 111, and in this step 111, the sequence search table 20
From 0, the start address of the phase registration table 300 registered there is taken out from the position where the sequence name is found in step 104.

In the present case, the sequence search table 200
3 has the configuration shown in FIG. 3, so that when the sequence name is found, the start address of the phase registration table 300 is taken out from the address obtained by adding 1 and 2 to the address indicated by the search pointer SRCH at that time.

Next, at step 112, the current phase value is fetched. In this case, the phase value is "0" which is the initial value.

Then, in step 113, the phase registration table 300 is specified from the start address of the phase registration table 300 extracted in step 111, and the specified phase registration table 30 is specified.
With respect to 0, using the value of the phase fetched in step 112 as a pointer, the head address registered for that phase is fetched. For example, the phase registration table 300 extracted in step 111 has the contents shown in FIG. 4, and if the value of the phase is 0, the cd_man_p0 address (upper and lower) is fetched.

Then, the process proceeds to step 114, and in this step 114, from the address fetched in step 113 of the sequence chart table 400, the data indicating the length of the phase registered in that address is fetched. Then, in step 115, the command counter CMDCNT is first set.

Subsequently, in step 116, the command counter in the sequence chart table 400 is
The command name is fetched from the position indicated by CMDCNT, and in step 117, the command name fetched in step 116 is used, and the command actual program part address table 500 is referred to through the command name definition table 550. The start address of the command fetched at 116 is fetched.

Then, in step 118, the subroutine of the head address of the command fetched in step 117 of the command group 600 is called and the command is actually executed.

When the subroutine call of step 118 is completed, that is, when the execution of the command is completed, the process proceeds to step 119 and this step 11
In step 9, the command counter CMDCNT is incremented by one, and then in step 120, it is checked whether or not all the phases are finished based on the length of the phase obtained in step 114, and it is not finished. Sometimes the process returns from step 120 to step 116.

Therefore, thereafter, step 116 is performed until all the phases included in a certain sequence are completed.
~ 120 will be repeatedly executed. And
When all the phases included in the sequence have been executed, the process proceeds from step 120 to step 121, and the interpreting program 100 is ended once.

As described above, for example, the function of manual channel selection is realized.

Even when another operation is requested, the interpreting program 100 is executed after the sequence name and the initial value of the phase are set as described above, and thus various operations are realized. In this case, as described above, the contents of the sequence chart table 400 are the same as the individual processing contents expressed in the processing procedure of FIG.
Correspondence is made one-to-one, for example, branch determination is also supported. Therefore, for example, the program list can be easily analyzed.

In the above description, the present invention is applied to the process at the time of manual channel selection of a synthesizer type receiver. For example, a process which can be described by a flow chart such as control of a CD player or a VTR mechanical unit. The present invention can be applied to control.

[0049]

According to the present invention, the processing procedure can be described on the program as the sequence chart table 400, so that the program list can be easily analyzed. Further, it becomes easy to respond to the rearrangement or change of the control or function to be realized. Further, when the program is modified or changed, it is possible to suppress the influence on an unintended part. Therefore, it is possible to easily improve or reuse the program.

[Brief description of drawings]

FIG. 1 is a flowchart showing a part of an example of the present invention.

FIG. 2 is a flowchart showing an example of a continuation of FIG.

FIG. 3 is a diagram showing an example of a sequence search table.

FIG. 4 is a diagram showing an example of a phase registration table.

FIG. 5 is a diagram showing an example of a sequence chart table.

FIG. 6 is a diagram showing an example of a command actual program part address table and a command name definition table.

FIG. 7 is a diagram showing an example of a list of a sequence search table.

FIG. 8 is a diagram showing an example of a list of a phase registration table.

FIG. 9 is a diagram showing an example of a list of a sequence chart table.

FIG. 10 is a diagram showing an example of a list of a command actual program part address table.

FIG. 11 is a diagram showing an example of a list of a command name definition table.

FIG. 12 is a diagram showing an example of a list of command groups.

FIG. 13 is a flowchart illustrating an example of a processing procedure.

[Explanation of symbols]

 100 Interpretation program 200 Sequence search table 300 Phase registration table 400 Sequence chart table 500 Command actual program part address table 550 Command name definition table 600 Command group

Claims (1)

[Claims] 1. A ROM, a table describing a processing procedure of a CPU, a processing group of a unit function constituting the processing procedure, and an interpreting program executed by the CPU for interpreting and executing the description of the table and the processing group. And at least the ROM and the CPU are integrated into a single-chip IC as a microcomputer, and the operation is controlled by the microcomputer.