JPH03250352A - Unit registering method - Google Patents

Abstract

PURPOSE:To automatically and surely register the units into a system controller by attaining such a constitution where the system controller sends successively the register commands to the units to register them there and a register request command is sent to the controller if no register command is received within a prescribed time. CONSTITUTION:A system controller 11 sends successively the register commands to the units 12 - 16 which form a system. Each unit transmits the register data (type, etc.) to the controller 11 to register its own characteristic when a register command addressed to its own unit is received within a prescribed time after the application of a power supply. If no register command is received within the prescribed time, the unit sends a register request command to the controller 11. Thus the controller 11 sends a register command to the relevant unit. Then each of units 12 - 16 is registered. In such a constitution, the units 12 - 16 forming a system are automatically and surely registered into the controller 11.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a unit registration method, and in particular, a controller and a plurality of units are connected to one bus, and the controller and each unit are mutually communicated via the bus. This invention relates to a method for registering units in a system that exchanges data.

<Prior art> A controller and multiple units are connected to one bus,
There is a system in which data is exchanged between a controller and each unit via the bus. In such a system, a controller specifies a destination unit using an address and sends data, and the addressed unit takes in the sent data and performs a predetermined operation.

Further, in order to request and transmit data from a predetermined unit, the controller specifies the unit by addressing and sends a data request command, and the addressed unit takes in the data request command and then sends the requested data. Send predetermined data to the controller via the bus.

Note that by including the sender address in the data from the unit, the unit that sent the data can be identified.

Specific examples of such a system include a system controller, tuner, and CD player.

There are audio systems that centrally control audio equipment (units) such as cassette decks, DAT devices, and graphic equalizers.

By the way, if we take such an audio system as an example, the units that make up the system are not constant and change depending on the user's requests, and some systems may include essential units such as a keyboard, display unit, system controller, and tuner. It consists of a cassette deck, and another system consists of, for example, essential units, a tuner, a CD player, and a graphic equalizer. Then, the system controller of each system sends control commands to predetermined units based on key operations on the keyboard, and controls the units according to the operation keys (switching output devices,
play/stop, fast forward/rewind, seek, etc.) and send display data to the display unit to perform a predetermined display.

<Problem to be Solved by the Invention> By the way, in the audio system etc. with the above configuration, the system controller must not recognize what kind of units (CD player, cassette deck, graphic equalizer, etc.) the system is configured with. No.

For this reason, it is conceivable that when the unit type registration conditions are met, such as when the power is turned on, the system controller executes a type registration routine, and sequentially outputs type data from the units that make up the system and registers it in the built-in memory. .

However, with this method alone, if data cannot be exchanged between the system controller and the unit due to noise or other causes, or if the unit is connected to the bus after the system controller executes the registration routine, the unit will not be connected. It will be determined that the system is not configured properly, and correct audio control will not be possible.

From the foregoing, it is an object of the present invention to provide a unit registration method that can automatically and reliably register units constituting a system with a system controller.

<Means for Solving the Problems> In the present invention, the above problems are solved by providing a means for sequentially sending registration commands to the units constituting the system, and a means for sequentially sending registration commands to the units constituting the system, and when receiving a registration command addressed to itself within a predetermined time after the power is turned on. has a means for transmitting registration data (type, etc.) to the controller, a means for storing the registration data, and a means for requesting registration to the controller if the registration command is not received even after a predetermined period of time has passed after the power is turned on. This is accomplished by means for transmitting the command and means for transmitting the registration command to the unit that generated the registration request command.

Function> The controller sequentially sends registration commands to the units that make up the system, and when each unit receives a registration command addressed to itself within a predetermined time after the power is turned on, it transfers the registration data (type, etc.) to the controller. In addition, if a registration command is not received even after a predetermined period of time has passed since the power was turned on, a registration request command is sent to the controller, and the controller registers the unit. A registration command is sent to the unit that generated the request command, registration data is received from the unit, and registration of the unit is executed.

<Embodiment> FIG. 1 is a block diagram of a system to which the unit registration method according to the present invention can be applied, in which one bus 10 has a system controller 11 and a plurality of units 12, 13, 14 . ... are connected, and data can be exchanged between the system controller 11 and each unit. Note that the bus 10 may be one that transfers data in a bit-serial manner.

Each unit 12, 13, 14, . . . has an address setting switch 12a, 13a, 14a, . . . so that a predetermined address can be set in advance. for example,
If the maximum number of units in the system is 8 or less, the address that can be set is 000,001,010.・・・
111 are considered, and a predetermined address is set for each unit so as not to overlap. Note that the address setting method is not limited to this case, and other methods may be considered.

In the case of an audio system, each unit 1 in Figure 1
2.13.14... are the operation unit (keyboard) with built-in microcomputer, display unit, cassette deck, tuner, graphic equalizer, etc. (required units may be combined into a composite unit), and each unit has a separate power line. are connected, and power is turned on to each unit by pressing the power-on button on the operation unit.

The unit registration method of the present invention will be described below with reference to FIGS. 2 to 4. The addresses that can be set for the unit are the above eight, the system controller address is fixed at OoO, and the address setting switches 12a, 13b, 14c are set in advance so that the addresses of other units do not overlap.
It is assumed that it is set by...

System controller processing (Figures 2 and 3) When the system is powered on or the system reset button is pressed, the system controller 11 first performs (1)
) A process is performed to recognize which address number the unit has that is connected to the bus 1o (address search), and after that (2) a process is performed to register the units connected to the bus.

That is, when the power is turned on or the system reset button is pressed, the system controller 11 sets the address to 001 and outputs an address search command to the bus 10 along with the address. As a result, bus 1o
If a unit with address 001 is connected to , the unit responds to the address search command with “
A status signal indicating that the unit is connected is sent to the system controller 11. But address 0
If the unit with 01 is not connected, no status signal is sent (step 101).

The system controller 11 determines whether the unit having the address 001 is connected based on whether or not the status signal is received (step 102). If the system controller 11 receives the status signal (if the unit is connected), the system controller 11 stores the address 001 in the built-in memory. lla (step 1o)
3). Note that if the status signal is not received in step 102, it is determined that the unit having address 001 is not connected.

After that, all addresses that can exist in the system (0
Step 104) to determine whether the above processing has been performed for 01 to 111), and if the above processing has not been performed for all addresses, the current address is incremented to 010, and an address search command is output to the bus 10 along with the address. ,
The processing from step 101 onward is repeated.

As described above, if the above processing is performed for all addresses 001 to 111, the addresses of the units connected to the bus 10 can be stored in the memory lla, and the address search processing is completed.

When the address search process is completed, the system controller 11 outputs a registration command to the bus 10 together with the address stored in the memory lla (step 105). As a result, the unit having the address outputted to the bus 10 reads the registration command and transmits registration data indicating what type of unit it is to the system controller 11 via the bus within a predetermined time.

The system controller 11 checks whether the registration data has been received from the unit (step 106), and if not, checks whether the predetermined time has elapsed (step 1).
07), if it has not elapsed yet, wait for reception of registration data.

If the registration data is received within a predetermined time, the registration data is stored in the memory lla in association with the address (step 108).

When the process in step 108 is completed, or if registration data is not received even after a predetermined period of time has elapsed, step 109) is performed to determine whether the process from step 105 onward has been performed for all addresses stored in the memory lla. If there are any unused addresses remaining, the process from step 105 onward is repeated for those addresses, and if no such addresses remain, the unit registration process is ended.

With the above, the unit registration process is completed, but due to noise or other reasons, the system controller 11 and unit 1
2.13.14, . . . or when a unit is connected to the bus 10 after the system controller 11 executes registration processing, the unit is not registered. In such a case, a registration request command is output from the unit to the system controller 11 to perform registration processing. FIG. 3 is a flowchart of the unit registration process when the system controller receives a registration request command from the unit.

When the system controller 11 receives a registration request command together with the address from a predetermined unit, it outputs the registration command to the unit.

That is, a registration command is output to the bus 10 together with the address of the unit (step 201).

As a result, the unit having the address output to the bus 10 (the unit that generated the registration request command) reads the registration command and sends the registration data indicating what type of unit it is via the bus within a predetermined time. It is sent to the system controller 11.

The system controller 11 checks whether the registration data has been received from the unit (step 202), and if not, checks whether the predetermined time has elapsed (step 2').
03) - If the elapsed time has not elapsed, wait for reception of registration data.

If the registration data is received within the predetermined time, the registration data is stored in the memory lla in correspondence with the address (step 204), and the registration process is terminated. If not, an error will occur and the host will be notified.

Unit Processing 4 When each unit is powered on or the reset button is pressed, it checks whether it has received an address search command addressed to it (step 301), and if it has received it, it returns "
A status signal indicating that the unit is connected is output to the system controller 11 (step 302
).

...After the above address search processing, it is monitored whether a registration command addressed to itself has been received within a predetermined period of time, for example, 500 @sec (step 30
3.304), where 500 m5ec is the time required for the system controller to perform all address search and unit registration processing.

If a registration command addressed to the self is received, the registration data indicating what type of unit the self is, etc. is sent to the system controller 11 via the bus (step 305).
), the unit registration process ends.

On the other hand, in step 303, if the registration command addressed to the self is not received even after 500 m5ec has elapsed, data may not be exchanged with the system controller 11 due to noise or other reasons, or the system controller 11 may not be able to execute the registration process. Afterwards, it is assumed that the unit is connected to the bus 1o, and a registration request command is output from the unit to the system controller 11 to perform registration processing (step 306).

After that, it monitors whether a registration command addressed to itself is received within a predetermined time (Steps 307, 308) If a registration command addressed to itself is received within a predetermined time, the registration data is sent to the system controller 11 via the bus in Step 305. to end the unit registration process. However, if the registration command is not received even after a predetermined period of time has elapsed, an error occurs and the host is notified.

<Effects of the Invention> According to the present invention, the controller sequentially sends registration commands to the units making up the system.

When each unit receives a registration command addressed to itself within a predetermined time, it sends registration data (type) to the controller to register what kind of unit it is, and even if the predetermined time elapses, it does not send the registration command. If not received, the controller is configured to send a registration request command to the controller, and the controller sends the registration command to the unit that generated the registration request command, receives registration data from the unit, and executes unit registration. Therefore, the units that make up the system can be automatically and reliably registered in the system controller.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a system to which the present invention can be applied. 2 and 3 are flowcharts of unit registration processing by the system controller, and FIG. 4 is a flowchart of unit registration processing in each unit. 10...Bus 11...System controller 12-14...Unit

Claims (1)

[Claims] A controller and a plurality of units are connected to one bus,
In a unit registration method in a system in which data is exchanged between the controller and each unit via a bus, each unit registers when it receives a registration command addressed to it from the controller after the unit registration conditions are met. The data is sent to the controller to register the unit, and if a registration command is not received after a predetermined period of time has passed after the unit registration conditions are met, a registration request command is sent to the controller, and the controller registers. A method for registering a unit, characterized by transmitting a registration command to a unit that has generated a request command, and registering the unit by receiving registration data from the unit.