JP2021015613A - Electronic controller - Google Patents

Abstract

To provide technology for speeding up processing in an electronic controller including a plurality of cores.SOLUTION: An electronic controller 3 includes a plurality of cores that share one AD converter. At least one instruction core among the plurality of cores includes a conversion instruction unit (S170), a time acquisition unit (S110), a time determination unit (S130), and a data acquisition unit (S190). The conversion instruction unit outputs, when elapsed time is equal to or greater than an allowable threshold for conversion data used by the instruction core itself, a conversion instruction for newly generating both conversion data to the AD converter, and stores both conversion data generated in accordance with the conversion instruction in a memory. The data acquisition unit acquires, when the elapsed time is equal to or greater than the allowable threshold for the conversion data used by the instruction core itself, the conversion data used by the instruction core itself, which is newly generated and stored in accordance with the conversion instruction, from the memory.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to an electronic control device including a plurality of cores.

Electronic control devices having a plurality of cores are known. Patent Document 1 discloses a technique in which each core independently performs an operation in an electronic control device including a plurality of cores.

JP-A-2009-199462

In an electronic control device including a plurality of cores as described in Patent Document 1, there may be a situation in which a plurality of cores commonly use one AD conversion device to generate AD conversion data. In such a case, if each core tries to individually generate the AD conversion data used for the calculation in the AD conversion device at the timing required by each core, the request for the AD conversion process to the AD conversion device becomes almost the same timing. Overlapping situations arise.

When the requests for AD conversion processing overlap, the core that requested AD conversion later waits until the generation of AD conversion data of the core that requested AD conversion is completed, and after waiting, AD conversion is performed to the AD conversion device. Since the data is generated, there is a waiting time before the calculation is started. Therefore, even though the electronic control device includes a plurality of cores, there may be a problem that the speeding up of processing is hindered in the electronic control device.

One aspect of the present disclosure provides a technique for accelerating processing in an electronic control device including a plurality of cores.

One aspect of the present disclosure is the electronic control device (3), which includes a plurality of cores sharing one AD converter. The instruction core, which is at least one of the plurality of cores, includes a conversion instruction unit (S170), a time acquisition unit (S110), a time determination unit (S130), and a data acquisition unit (S190). The conversion instruction unit outputs a conversion instruction to the AD converter that generates conversion data by AD conversion processing according to the conversion instruction to generate conversion data used by the remaining cores among a plurality of cores in addition to the conversion data used by the instruction core itself. To do. Then, the conversion instruction unit stores both conversion data including the conversion data used by the instruction core itself and the conversion data used by the remaining cores generated according to the conversion instruction in the memory. The time acquisition unit acquires the elapsed time, which is the time elapsed since the AD conversion process by the AD converter is completed according to the conversion instruction. The time determination unit determines whether or not the elapsed time is equal to or greater than the allowable threshold value, which is a predetermined length of time. The data acquisition unit acquires the conversion data used by the instruction core itself from the memory. Further, the conversion instruction unit outputs a conversion instruction for newly generating both conversion data to the AD converter when the elapsed time is equal to or longer than the allowable threshold value for the conversion data used by the instruction core itself, and the conversion instruction is given. Both conversion data generated according to the above are stored in the memory. Further, the data acquisition unit acquires the conversion data used by the instruction core itself, which is newly generated and stored according to the conversion instruction from the memory when the elapsed time is equal to or longer than the allowable threshold value for the conversion data used by the instruction core itself. To do.
Further, one aspect of the present disclosure is an electronic control device (3), which includes a plurality of cores sharing one AD converter. The instruction core, which is at least one of the plurality of cores, includes a conversion instruction unit (S170), a time acquisition unit (S110), a time determination unit (S130), and a data acquisition unit (S190). The conversion instruction unit outputs a conversion instruction to the AD converter that generates conversion data by AD conversion processing according to the conversion instruction to generate conversion data used by the remaining cores among a plurality of cores in addition to the conversion data used by the instruction core itself. To do. Then, the conversion instruction unit stores both conversion data including the conversion data used by the instruction core itself and the conversion data used by the remaining cores generated according to the conversion instruction in the memory. The time acquisition unit acquires the elapsed time, which is the time elapsed since the AD conversion process by the AD converter is completed according to the conversion instruction. The time determination unit determines whether or not the elapsed time is equal to or greater than the allowable threshold value, which is a predetermined length of time. The data acquisition unit acquires the conversion data used by the instruction core itself from the memory. The conversion instruction unit does not output a conversion instruction for the conversion data used by the instruction core itself to newly generate both conversion data to the AD converter when the elapsed time is less than the allowable threshold value. The data acquisition unit acquires the already stored conversion data used by the instruction core itself from the memory when the elapsed time is less than the allowable threshold value for the conversion data used by the instruction core itself.

According to these configurations, it is possible to reduce the situation where the timings at which the AD converters shared by each of the plurality of cores try to perform the AD conversion process overlap. As a result, the waiting time is reduced, so that the processing speed can be increased in the electronic control device including a plurality of cores.

In addition, the reference numerals in parentheses described in this column and the scope of claims indicate the correspondence with the specific means described in the embodiment described later as one embodiment, and the technical scope of the present disclosure is defined. It is not limited.

A block diagram showing the configuration of a control system. The figure explaining the correspondence relationship between the input channel, the type of conversion data, the permissible time, and the permissible threshold value. The flowchart of the data acquisition process of 1st Embodiment. Flowchart of conversion instruction processing. The figure explaining the type of conversion data, the correspondence relation between conversion data, and conversion end time. The figure explaining the operation of the CPU in the ECU. The flowchart of the data acquisition process of 2nd Embodiment.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.
[1. First Embodiment]
[1-1. Constitution]
The control system 1 shown in FIG. 1 is a system mounted on a vehicle. Hereinafter, the vehicle equipped with the control system 1 is also referred to as a own vehicle. The control system 1 includes an electronic control device (hereinafter, ECU) 3. The control system 1 may include a crank angle sensor 5, an in-cylinder pressure sensor 6, a fuel pressure sensor 7, and an injector 8. ECU is an abbreviation for Electronic Control Unit.

The crank angle sensor 5 outputs a detection signal indicating the detection result of the crank angle. The in-cylinder pressure sensor 6 outputs a detection signal indicating a detection result of the in-cylinder pressure (hereinafter, in-cylinder pressure) in the engine. The fuel pressure sensor 7 outputs a detection signal indicating a detection result of the fuel pressure (hereinafter, fuel pressure) pumped to the engine. The injector 8 injects fuel into an engine (not shown).

The ECU 3 controls various vehicles, such as controlling the fuel injection amount by the injector 8 in the engine, based on a plurality of types of analog signals such as a crank angle, an in-cylinder pressure, and a fuel pressure.

The ECU 3 is mainly composed of a microcomputer (hereinafter referred to as a microcomputer) 10. The microcomputer 10 includes a plurality of CPUs 11a and 11b, one memory 13, and one AD converter 14. AD converter is an abbreviation for Analog Digital converter.

In the following, when the description common to the plurality of CPUs 11a and 11b is described, the subscripts such as CPU 11 are omitted. Further, the CPU 11a is also described as the own CPU, and the CPU 11b is described as another CPU.

Various functions of the microcomputer 10 are realized by the CPU 11 executing a program stored in a non-transitional substantive recording medium. In this example, the memory 13 corresponds to a non-transitional substantive recording medium in which a program is stored. Moreover, when this program is executed, the method corresponding to the program is executed. The number of microcomputers 10 constituting the ECU 3 may be one or a plurality.

The method for realizing various functions of the microcomputer 10 is not limited to software, and some or all of the elements may be realized by using one or a plurality of hardware. For example, when the above function is realized by an electronic circuit which is hardware, the electronic circuit may be realized by a digital circuit including a large number of logic circuits, an analog circuit, or a combination thereof.

The CPU 11a and the CPU 11b realize various functions by executing operations independently of each other. The CPUs 11a and 11b commonly use the memory 13. Further, the CPUs 11a and 11b commonly use the AD converter 14.

The CPUs 11a and 11b use a plurality of converted data in order to realize various functions.
The converted data refers to digital data generated by causing the AD converter 14 to perform AD conversion processing on the analog signal based on the analog signal input to the ECU 3 in order to realize various functions in the ECU 3. As shown in FIG. 2, the plurality of conversion data are classified into a plurality of types such as in-cylinder pressure, fuel pressure, crank angle, and the like.

Although not shown, the engine is composed of four cylinders, and the crank angle sensor 5, the in-cylinder pressure sensor 6, and the fuel pressure sensor 7 are provided for each cylinder. Each sensor provided in each cylinder outputs an analog signal as a detection result. In the type of conversion data shown, the number added at the end, such as "crank angle 1", indicates the cylinder number.

The type of conversion data used by the CPUs 11a and 11b is predetermined for each of the CPUs 11a and 11b. For example, the CPU 11a uses the conversion data of "in-cylinder pressure 1" to "in-cylinder pressure 4" and the "fuel pressure 1" to "fuel pressure 4", and the CPU 11b uses the conversion data of "crank angle 1" to "crank angle 4". And so on.

Further, the permissible time is set in advance for each of the plurality of conversion data, and the permissible time is recorded in the memory 13 in advance for each type of conversion data.
The allowable time here means the time allowed from the generation of the conversion data to the use of the conversion data. To be used means to be used for various controls and calculations for performing the control.

Further, “allowable” means that even if the converted data is not newly generated based on the original analog signal, that is, is not updated, the control and calculation using the converted data are not hindered. That means. That is, "allowable" means that even if the converted data is not updated, it does not affect the control and calculation using the converted data. The permissible time represents the expiration date of the converted data.

Further, in the present embodiment, the shortest allowable time among the allowable times set for the plurality of converted data is set as the allowable threshold value described later. The permissible threshold is set for each CPU 11. For example, 2500 μsec is set as an allowable threshold value for the CPU 11a, and 2000 μsec is set as an allowable threshold value for the CPU 11b. The permissible threshold is pre-recorded in the memory 13.

The CPU 11 executes a data acquisition process, which is a process of acquiring conversion data, based on an allowable threshold value. Further, the CPU 11 executes a conversion instruction process, which is a process of causing the AD converter 14 to generate conversion data.

Further, the CPU 11 executes a process for realizing various functions using the converted data (hereinafter, a utilization process).
A program for the CPU 11 to realize various functions of the microcomputer 10 is recorded in the memory 13. Further, the above-mentioned allowable time is recorded in the memory 13 for each CPU 11. In addition, data indicating the calculation result of the CPU 11 and the like is recorded in the memory 13.

The AD converter 14 generates conversion data according to an instruction from the CPU 11 to cause the AD converter 14 to execute the AD conversion process (hereinafter referred to as a conversion instruction).
The AD converter 14 has a plurality of channels (not shown). Analog signals that can be the target of AD conversion processing, such as in-cylinder pressure, fuel pressure, crank angle, etc., are input to each of the plurality of channels. Further, the AD converter 14 has a plurality of storage areas such as a setting register 45, a status register 46, and a data buffer 47.

The AD converter 14 starts operating when the conversion instruction is written to the setting register 45 by the CPU 11. The conversion instruction is an instruction output from the CPU 11 and specifies one or a plurality of channels to which an analog signal to be subject to AD conversion processing is input.

When the conversion instruction is written in the setting register 45, the AD converter 14 writes a value indicating a busy state in the status register 46. The busy state means a state in which the AD converter 14 is executing the AD conversion process.

The AD converter 14 generates conversion data of an analog signal input from the channel specified by the conversion instruction, and writes the generated conversion data to the data buffer 47, for example, a plurality of channels designated by the conversion instruction. Repeat for minutes.

When the AD converter 14 finishes generating conversion data for all of the plurality of channels specified by the conversion instruction, the AD converter 14 writes a value indicating an idle state in the status register 46. The idle state means a state in which the AD converter 14 is not executing the AD conversion process.

The CPU 11 has a timer (not shown) that counts the time elapsed since the power was turned on to the microcomputer 10. The time referred to below is represented by the time counted by the timer.

[1-2. processing]
[1-2-1. Data acquisition process]
Next, the data acquisition process executed by the CPU 11 will be described with reference to the flowchart of FIG. The data acquisition process is a process for acquiring the conversion data used by the CPU 11 from the memory 13. The data acquisition process is executed triggered by the CPU 11 performing a utilization process which is a process using the converted data.

When the data acquisition process is started, the type of conversion data used in the CPU 11, such as "in-cylinder pressure 1" and "fuel pressure 1", can be specified in advance by the CPU 11 based on the utilization process.

The CPU 11b may be configured to execute the data acquisition process in the same manner as the CPU 11a. In the present embodiment, it is assumed that the CPUs 11a and 11b are configured to execute the data acquisition process in the same manner. Hereinafter, an example will be described in which the own CPU 11a executes the data acquisition process with the CPU 11a as the own CPU 11a and the CPU 11b as another CPU 11b.

First, the own CPU 11a acquires the elapsed time in S110. The elapsed time means the time elapsed since the AD conversion process by the AD converter 14 was completed.
The own CPU 11a calculates the elapsed time by a process different from the present data acquisition process, and the own CPU 11a acquires the calculated elapsed time.

In addition, the own CPU 11a is not limited to this, and in this step, the own CPU 11a calculates the difference between the current time represented by the timer (hereinafter, the current time) and the conversion end time recorded in the memory 13. The calculated difference may be acquired as the elapsed time. The conversion end time referred to here means the time when the AD converter 14 has completed the AD conversion process most recently.

The own CPU 11a acquires an allowable threshold value in the subsequent S120. The permissible threshold value represents a time of a predetermined length, and is recorded in the memory 13 in advance. As described above, in the present embodiment, the shortest permissible time among the permissible times set for each of the plurality of converted data is used as the permissible threshold value. The permissible threshold is set for each CPU 11.

In S130, the own CPU 11a determines whether or not the elapsed time acquired in S110 is equal to or greater than the allowable threshold value acquired in S120. When the elapsed time here is equal to or greater than the allowable threshold value, it means that the conversion data needs to be newly generated based on the original analog signal, that is, the conversion data needs to be updated. Further, when the elapsed time is less than the allowable threshold value, it means that the conversion data does not need to be updated.

The own CPU 11a shifts the process to S140 when the elapsed time is equal to or greater than the allowable threshold value, and shifts the process to S190 when the elapsed time is less than the allowable threshold value.
In S140, where the own CPU 11a shifts when the elapsed time is equal to or greater than the allowable threshold value, in other words, in S140, which shifts when the own CPU 11a wants the AD converter 14 to perform AD conversion processing, the AD converter 14 moves. It is determined whether or not the AD conversion process is being performed. More specifically, the own CPU 11a determines whether or not the AD converter 14 is in the process of performing the AD conversion process according to an instruction other than the own CPU 11a.

Specifically, the own CPU 11a acquires the exclusive flag, and determines whether or not the AD converter 14 is performing the AD conversion process based on the exclusive flag. The exclusive flag is a flag indicating the operating state of the AD converter 14, and is recorded in the memory 13.

The exclusive flag is set to 0 when the AD converter 14 is not executing the AD conversion process. When the AD converter 14 is executing the AD conversion process, the exclusive flag is set to the identification number representing the CPU instructing the AD conversion process being executed. The identification number is predetermined for each CPU, such as 1 for the own CPU 11a and 2 for the other CPU 11b, and is recorded in the memory 13.

That is, when the exclusive flag is set in addition to 0 and the identification number representing the own CPU 11a, the own CPU 11a determines that the AD converter 14 is performing the AD conversion process according to the instruction by the CPU other than the own CPU 11a. .. The CPU other than the own CPU 11a referred to here means another CPU 11b.

The own CPU 11a shifts the process to S160 when the AD converter 14 is not executing the AD conversion process, and shifts the process to S150 when the AD converter 14 is executing the AD conversion process by another CPU 11b. ..

In S150, the own CPU 11a determines whether or not the AD conversion process by the AD converter 14 has been completed. Specifically, the own CPU 11a acquires the exclusive flag, and determines that the AD conversion process by the AD converter 14 is completed when the value of the exclusive flag is 0. The own CPU 11a waits until the value of the exclusive flag becomes 0, and shifts the process to S190 when the AD conversion process is completed.

That is, when the AD conversion process is executed by the AD converter 14 by the other CPU 11b, the own CPU 11a waits until the AD conversion process by the other CPU 11b is completed, and the AD conversion process by the other CPU 11b is performed. When finished, the process shifts to S190.

The own CPU 11a sets the identification number representing the own CPU 11a as an exclusive flag in S160, which is shifted when the AD converter 14 is not executing the AD conversion process.
In S170, the own CPU 11a executes a conversion instruction process described later. The conversion instruction process is a process for causing the AD converter 14 to perform the AD conversion process. In the present embodiment, the own CPU 11a causes the AD converter 14 to generate conversion data used by the other CPU 11b in addition to the conversion data used by the own CPU 11a by executing the conversion instruction process. Then, the generated conversion data is recorded in the memory 13. When the own CPU 11a finishes the conversion instruction process, the process shifts to S180.

The own CPU 11a resets the exclusive flag in S180. Specifically, the own CPU 11a sets 0 as the value of the exclusive flag.
In S190, the own CPU 11a acquires the conversion data recorded in the memory 13. The own CPU 11a ends the data acquisition process after acquiring the converted data. The conversion data acquired in this step may include, for example, at least the conversion data used in the utilization process that triggered the start of the data acquisition process. Alternatively, the conversion data acquired in this step may include all of the conversion data used by the own CPU 11a.

[1-2-2. Conversion instruction processing]
Next, the conversion instruction process executed by the own CPU 11a in S170 will be described with reference to the flowchart of FIG.

The own CPU 11a generates a conversion instruction in S210. In the present embodiment, all of the analog signals that are the sources of the conversion data used by the plurality of CPUs 11a and 11b included in the microcomputer 10 are subject to the AD conversion processing. That is, as shown in FIG. 2, the own CPU 11a generates a conversion instruction for designating a plurality of input channels from the start channel to the end channel, with channel 0 as the start channel and channel 11 as the end channel.

The conversion instruction is not limited to this. The own CPU 11a may generate, for example, a conversion instruction that specifies all the input channels included in the AD converter 14.
In S220, the own CPU 11a outputs the conversion instruction generated in S210 to the AD converter 14. Specifically, the own CPU 11a writes a conversion instruction to the setting register 45. As a result, the AD converter 14 starts the AD conversion process for the analog signals from the 0 channel to the 11 channel according to the conversion instruction. That is, the generation of the converted data is newly started for all the converted data used in the own CPU 11a and the other CPU 11b.

In S230, the own CPU 11a determines whether or not the AD conversion process is completed in the AD converter 14. Specifically, the own CPU 11a acquires the value of the status register 46, and when the value is a value indicating an idle state, it determines that the AD conversion process is completed. The own CPU 11a waits until the AD conversion process is completed in the AD converter 14, and shifts the process to S240 when the AD conversion process is completed.

When the AD conversion process is completed, all the conversion data for the input channels specified in the conversion instruction are written in the data buffer 47 of the AD converter 14.
In S240, the own CPU 11a acquires all the converted data generated from the data buffer 47 of the AD converter 14 and writes it to the memory 13. Writing here means overwriting data. That is, in this step, all of the conversion data used by the plurality of CPUs 11a and 11b included in the microcomputer 10 is overwritten by the newly generated conversion data.

In S250, the own CPU 11a acquires the current time from the timer and records the acquired time in the memory 13 as the conversion end time. Then, the own CPU 11a ends the conversion instruction process.

As a result, when the conversion instruction process is executed, as shown in FIG. 5, in addition to the conversion data used by the own CPU 11a, the conversion data used by the other CPU 11b is newly generated and recorded in the memory 13. .. Further, the conversion end time is recorded in the memory 13. In FIG. 5, the conversion data and the conversion end time are described as analog values for the sake of clarity, but in reality, these digital data are recorded in the memory 13.

In the present embodiment, the own CPU 11a is configured to execute the conversion instruction process immediately after the power is turned on to the ECU 3.
[1-3. Operation]
The operation of the CPU 11 in the ECU 3 configured in this way will be described with reference to FIG. The CPU 11 initializes immediately after the power is turned on to the ECU 3. After the initialization, the CPU 11 executes a predetermined process (hereinafter, a periodic task) at a predetermined cycle such as several millimeters to several hundred milliseconds. The periodic task is individually set in each of the own CPU 11a and the other CPU 11b. The periodic task may include a utilization process that is a process that utilizes at least one of a plurality of converted data.

In the following, an example in which the usage process is included in the periodic task and the own CPU 11a and the other CPU 11b execute different periodic tasks will be described.
Immediately after the power is turned on to the ECU 3 at time t0, in S301, the own CPU 11a executes the conversion instruction process while performing initialization. As a result, the AD converter 14 executes the AD conversion process, and all of the conversion data used by the own CPU 11a and the other CPU 11b are generated. The own CPU 11a records the generated conversion data D1 in the memory 13 together with the conversion end time t1.

In S302, the own CPU 11a executes the data acquisition process, triggered by the execution of the usage process while performing the periodic task. Here, in S302, the elapsed time is less than the allowable threshold value. Therefore, the own CPU 11a acquires the conversion data recorded in the memory 13 at this point and ends the data acquisition process.

In S303, the other CPU 11b executes the data acquisition process triggered by the execution of the utilization process while performing the periodic task. Here, in S303, the elapsed time is less than the allowable threshold value. Therefore, the other CPU 11b acquires the conversion data recorded in the memory 13 at this point and ends the data acquisition process.

In S304, the own CPU 11a executes the data acquisition process triggered by the execution of the utilization process while performing the periodic task. Here, in S303, the elapsed time is equal to or greater than the allowable threshold value. Therefore, the own CPU 11a executes the conversion instruction process in the data acquisition process. As a result, the AD converter 14 executes the AD conversion process, and all of the conversion data used by the own CPU 11a and the other CPU 11b are generated. The own CPU 11a records the generated conversion data D2 in the memory 13 together with the conversion end time t2. Then, the own CPU 11a acquires the converted data newly recorded in the memory 13 and ends the data acquisition process.

In the regular task, the same processing can be executed every cycle. That is, the process using the above-mentioned conversion data can be executed at the same timing from the start of the periodic task every cycle. However, this does not apply when interrupt processing with a higher priority is performed.

In S305, the own CPU 11a executes the data acquisition process in the wake of the utilization process being executed at the same timing as in S302 while performing the periodic task in the next cycle. Here, in S305, the elapsed time is less than the permissible threshold as in S302. The own CPU 11a operates in the same manner as in S302.

Here, when the high-priority interrupt processing is executed in the own CPU 11a and the other CPU 11b, a processing delay time due to the high-priority interrupt processing occurs as shown in S306 and S307. That is, the above-mentioned utilization process is executed at a timing later than the original timing. In such a case, the CPU 11 operates as follows.

In S306, when the utilization process is executed after the processing delay time due to the interrupt process occurs while the other CPU 11b is performing the periodic task, the data acquisition process is executed with the execution of the utilization process as a trigger. Here, in S306, the elapsed time is equal to or greater than the allowable threshold value. Therefore, the other CPU 11b executes the conversion instruction process in the data acquisition process. As a result, the AD converter 14 executes the AD conversion process and generates all the conversion data used by the own CPU 11a and the other CPU 11b. The other CPU 11b records the generated conversion data D3 in the memory 13 together with the conversion end time t3. Then, the other CPU 11b acquires the converted data newly recorded in the memory 13 and ends the data acquisition process.

In S307, when the own CPU 11a executes the utilization process after the processing delay time due to the interrupt process occurs while performing the periodic task in the next cycle, the own CPU 11a executes the data acquisition process with the execution of the utilization process as a trigger. To do. Here, in S307, the elapsed time is less than the allowable threshold value. Therefore, the own CPU 11a acquires the conversion data recorded in the memory 13 at this point and ends the data acquisition process.

In S306 and S307, the timing at which the data acquisition process is executed is close, but the result of whether or not the elapsed time is less than the allowable threshold is different, so that the CPUs 11a and 11b operate differently. There is.

[1-4. effect]
According to the first embodiment described in detail above, the following effects are obtained.
(1a) The ECU 3 includes a plurality of CPUs 11a and 11b that share one AD converter 14. In S170, each of the plurality of CPUs 11a and 11b causes the AD converter 14 to perform AD conversion processing. In S190, the conversion data is acquired from the memory 13 in which the conversion data, which is the digital data generated by the AD conversion process, is recorded. The plurality of CPUs 11a and 11b have their own CPU 11a and another CPU 11b. In S170 included in the own CPU 11a, in addition to the conversion data used in the own CPU 11a, the conversion data used in the other CPU 11b is generated by the AD converter 14.

According to this, since the own CPU 11a has a configuration in which the shared AD converter 14 generates the conversion data used by the other CPU 11b in addition to the conversion data used by the own CPU 11a, the other CPU 11b has the own CPU 11a. It becomes possible to use the conversion data used in the other CPU 11b generated by.

That is, the frequency with which the other CPU 11b causes the shared AD converter 14 to perform the AD conversion process can be reduced as compared with the case where the configuration is not provided. In other words, the situation where the timings at which the plurality of CPUs 11a and 11b each try to perform the AD conversion process on the shared AD converter 14 is reduced. As a result, the waiting time is reduced, so that the processing speed can be increased in the ECU 3 including the plurality of CPUs 11a and 11b.

In the present embodiment, the other CPU 11b is also configured so that the AD converter 14 generates the conversion data used by the own CPU 11a in addition to the conversion data used by the other CPU 11b in the S170 included in the other CPU 11b. Has been done. As a result, the waiting time is further reduced, so that the processing speed can be further increased in the ECU 3 provided with the plurality of CPUs 11a and 11b.

(1b) Each of the plurality of CPUs 11a and 11b further acquires an elapsed time, which is the time elapsed since the AD conversion process by the AD converter 14 is completed, in S110. In S130, it is determined whether or not the elapsed time is equal to or greater than the allowable threshold value which is a predetermined length of time. In S170, when the elapsed time is equal to or greater than the allowable threshold value, the AD converter 14 is made to perform the AD conversion process.

According to this, since each of the plurality of CPUs 11a and 11b has a configuration in which the AD converter 14 performs the AD conversion process when the elapsed time is equal to or longer than the allowable threshold value, the elapsed time exceeds the allowable threshold value. It is possible to prevent the converted data from being used for control, calculation, and the like. Further, according to this, it is possible to reduce the situation where the AD conversion processes overlap in the AD converter 14 as compared with the case where the conversion data is generated at a time interval shorter than the permissible threshold value, for example.

(1c) The ECU 3 is configured to record the conversion end time, which is the time when the conversion data generation is completed, together with the conversion data in the memory 13.
According to this, since the conversion end time is recorded in the memory 13, the elapsed time can be calculated based on the time.

(1d) Each of the plurality of CPUs 11a and 11b is configured to use a plurality of types of conversion data. For each of the converted data, an allowable time, which is an allowable time from the generation of the converted data to the use, is preset. In S130, each of the plurality of CPUs 11a and 11b uses the shortest permissible time among the permissible times set for each of the converted data as the permissible threshold value.

According to this, all of the conversion data used by the plurality of CPUs 11a and 11b at the timing corresponding to the conversion data that needs to be updated most frequently among the plurality of conversion data used in each of the plurality of CPUs 11a and 11b. Is updated. Therefore, it is possible to prevent the conversion data from being used in each of the plurality of CPUs 11a and 11b beyond the permissible time.

(1e) Each of the plurality of CPUs 11a and 11b further determines in S140 whether or not the AD converter 14 is performing the AD conversion process. In S190, when the AD converter 14 is trying to perform the AD conversion process in S170 and the AD converter 14 is performing the AD conversion, the memory is stored after the AD conversion process by the AD converter 14 is completed. The conversion data recorded in 13 is acquired.

According to this, when the AD converter 14 is performing the AD conversion process, each of the plurality of CPUs 11a and 11b acquires the conversion data recorded in the memory 13 after the AD conversion process is completed, and thus after the update. It becomes possible to use the latest conversion data of. For example, when the own CPU 11a is performing the AD conversion process, the other CPU 11b can use the latest conversion data updated by the own CPU 11a without causing the AD converter 14 to perform the AD conversion process by itself. It becomes.

As a result, the frequency of causing the shared AD converter 14 to perform the AD conversion process can be reduced, and the situation where the requests for the AD conversion process overlap can be reduced. That is, the same effect as in (1a) above is achieved.

[1-5. Modification example]
In the above embodiment, the other CPU 11b is configured to cause the AD converter 14 to generate the conversion data used by the own CPU 11a in addition to the conversion data used by the other CPU 11b in the S170 included in the other CPU 11b. It was. However, it is not limited to this. The other CPU 11b may be configured so that the AD converter 14 generates only the conversion data used by the other CPU 11b in S170 included in the other CPU 11b.

[2. Second Embodiment]
[2-1. Differences from the first embodiment]
Since the basic configuration of the second embodiment is the same as that of the first embodiment, the differences will be described below. The same reference numerals as those in the first embodiment indicate the same configurations, and the preceding description will be referred to.

In the first embodiment described above, the shortest permissible time among the permissible times set for each of the plurality of conversion data is used as the permissible threshold value.
On the other hand, the second embodiment is different from the first embodiment in that the permissible time set for each of the plurality of converted data is used as the permissible threshold value of each of the converted data.

Further, at least a part of the conversion data specified in advance (hereinafter, specific data) among the plurality of conversion data is different from the first embodiment in that the allowable time is changed according to the operating conditions of the own vehicle. ..

Due to these differences, the data acquisition process in the present embodiment is different from the data acquisition process in the first embodiment. Specifically, in the data acquisition process of the present embodiment based on the flowchart shown in FIG. 7, S120 of the flowchart in the data acquisition process of the first embodiment shown in FIG. 3 is replaced with S121 to S127.

[2-2. processing]
Next, the data acquisition process executed by the CPU 11 of the second embodiment will be described with reference to the flowchart of FIG. 7. Since the processing of S140 to S190 in FIG. 7 is the same as the processing of S140 to S190 in FIG. 3, the description is partially simplified.

Here, in the present embodiment, among the own CPU 11a and the other CPU 11b, the own CPU 11a uses the permissible time set for each of the plurality of conversion data as the permissible threshold value of the conversion data, and the specific data is used. , It is configured to change the permissible time according to the operating conditions of the own vehicle. Specifically, the own CPU 11a uses the fuel pressure conversion data as specific data, and changes the permissible time for the fuel pressure conversion data according to the engine speed of the own vehicle. That is, the own CPU 11a is configured to execute the data acquisition process shown in FIG. 7.

On the other hand, the other CPU 11b uses the permissible time set for each of the plurality of conversion data as the permissible threshold value of each conversion data. That is, the other CPU 11b is configured to delete S122 and S124 to S127 from the data acquisition process shown in FIG. 7 and execute the process in the order of S121, S123, and S130.

Hereinafter, an example in which the own CPU 11a executes the data acquisition process of FIG. 7 will be described. The data acquisition process in the present embodiment is executed triggered by the utilization process being performed in the own CPU 11a.

The own CPU 11a acquires the elapsed time in S110.
In S121, the own CPU 11a specifies the type of conversion data used by the own CPU 11a. As described above, the own CPU 11a can specify the type of conversion data used by the own CPU 11a based on the utilization process. The conversion data used by the own CPU 11a referred to here includes all or a part of the conversion data used by the own CPU 11a. Further, the conversion data used by the own CPU 11a may include, for example, the conversion data used in the utilization process that triggered the start of the data acquisition process.

In S122, the own CPU 11a determines whether or not the specific data is included in the type of conversion data used in the own CPU 11a specified in S121. The specific data is recorded in the memory 13 in advance.

Specifically, in the present embodiment, the fuel pressure is recorded in the memory 13 as specific data, and the own CPU 11a determines whether or not the type of conversion data used by the own CPU 11a specified in S121 includes the fuel pressure. To do. The own CPU 11a shifts the process to S123 when the fuel pressure is not included, and shifts the process to S124 when the fuel pressure is included.

Here, in S123, which shifts to the case where the type of conversion data used by the own CPU 11a does not include the fuel pressure, the own CPU 11a refers to the conversion data other than the fuel pressure among the conversion data used by the own CPU 11a for each type of conversion data. Set the allowable threshold value in.

Specifically, for each of the conversion data other than the fuel pressure among the conversion data used by the own CPU 11a, the permissible time set for each type of conversion data is set as the permissible threshold value as shown in FIG.

On the other hand, in S124, which shifts to the case where the type of conversion data used by the own CPU 11a includes fuel pressure, the own CPU 11a acquires the engine speed in the own vehicle. The own CPU 11a is configured to acquire the engine speed output by the crank angle sensor 5.

In S125, the own CPU 11a determines whether or not the engine speed is equal to or higher than the rotation threshold. The rotation threshold value is a predetermined magnitude of the engine speed, and is recorded in the memory 13 in advance. The rotation threshold is set to a low rotation speed, for example, in an idle state. However, the rotation threshold is not limited to this.

The own CPU 11a shifts the process to S126 when the engine speed is equal to or higher than the rotation threshold, and shifts the process to S127 when the engine speed is less than the rotation threshold.
In S126, which shifts when the engine speed is equal to or higher than the rotation threshold, the own CPU 11a sets the first set time as the allowable time for the fuel pressure conversion data. Then, the own CPU 11a shifts the processing to S130. The first set time is set to the allowable time shown in FIG. However, the present invention is not limited to this, and the first set time can be set to an arbitrary value in order to realize a predetermined function. The first set time is pre-recorded in the memory 13.

In S127, which shifts when the engine speed is less than the rotation threshold, the own CPU 11a sets the second set time as the allowable time for the fuel pressure conversion data. Then, the own CPU 11a shifts the processing to S130. The second set time is a value longer than the first set time, and is recorded in the memory 13 in advance.

That is, in S126 and S127, the own CPU 11a represents the operating state of the vehicle by setting the allowable time set for specific data such as fuel pressure conversion data, that is, at least a part of the conversion data among a plurality of types of conversion data. Change according to the engine speed.

In S130, the own CPU 11a uses the allowable threshold values set for each conversion data in S123, S126, and S127 for all of the plurality of conversion data used in the own CPU 11a, and whether or not the elapsed time is equal to or greater than the allowable threshold value. To judge.

The own CPU 11a shifts the processing to S140 when the elapsed time is equal to or greater than the allowable threshold in at least one of the plurality of converted data used in the own CPU 11a, and the elapsed time is less than the allowable threshold in all the converted data. If, the process is transferred to S190.

In S140 to S190, the own CPU 11a executes the same processing as in S140 to S190 in the first embodiment.
[2-3. Operation]
The operation of the own CPU 11a that executes the data acquisition process of the present embodiment will be described. Here, the own CPU 11a starts the above-mentioned data acquisition process by using the process of using the conversion data of "in-cylinder pressure 1", "in-cylinder pressure 2", and "fuel pressure 1" as the utilization process. And.

For example, for "fuel pressure 1", the first set time is set to 2000 μsec as shown in FIG. 2, and the second set time is set to a longer time such as 7000 μsec. To do. Here, it is assumed that the engine speed is less than the rotation threshold. In such a case, the own CPU 11a operates as follows.

(1) The own CPU 11a sets an allowable time such as 3000 μsec for “in-cylinder pressure 1” and 2800 μsec for “in-cylinder pressure 2” as an allowable threshold value. Further, for "fuel pressure 1", an allowable time such as 7000 μsec is set as an allowable threshold value.

(2) When the elapsed time is equal to or greater than any of the allowable thresholds of "in-cylinder pressure 1", "in-cylinder pressure 2", and "fuel pressure 1", the own CPU 11a executes conversion instruction processing. As a result, all of the conversion data used by the own CPU 11a and the other CPU 11b is newly generated by the AD converter 14 and recorded in the memory 13. The own CPU 11a acquires, for example, the conversion data of "in-cylinder pressure 1", "in-cylinder pressure 2", and "fuel pressure 1" recorded in the memory 13, and ends the data acquisition process. After that, the own CPU 11a can execute the utilization process using the acquired conversion data.

(3) When the elapsed time is less than any of the allowable thresholds of "in-cylinder pressure 1", "in-cylinder pressure 2", and "fuel pressure 1", the own CPU 11a is already recorded in the memory 13, for example. The conversion data of "in-cylinder pressure 1", "in-cylinder pressure 2", and "fuel pressure 1" is acquired. Then, the data acquisition process is terminated. After that, the own CPU 11a can execute the utilization process using the acquired conversion data.

[2-4. effect]
According to the second embodiment described in detail above, the following effects are obtained.
(2a) Each of the plurality of CPUs 11a and 11b is configured to use a plurality of types of conversion data. For each of these conversion data, an allowable time, which is an allowable time from the generation of the conversion data to the use, is preset. In S130, each of the plurality of CPUs 11a and 11b uses the permissible time set for each conversion data as the permissible threshold value. In the present embodiment, this does not apply to the CPU 11a when the conversion data is the fuel pressure.

According to this, since each of the plurality of CPUs 11a and 11b generates the conversion data only when there is the conversion data whose elapsed time is equal to or longer than the allowable threshold value, for example, compared to the case where the shortest allowable time is set as the allowable threshold value. , The frequency of causing the AD converter 14 to perform the AD conversion process can be reduced. As a result, it is possible to reduce the situation where the AD converter 14 has overlapping AD conversion requests. As a result, the processing speed can be increased in the ECU 3.

(2b) The ECU 3 is mounted on the vehicle. The permissible time can be set for at least a part of the conversion data among the plurality of types of conversion data by the own CPU 11a. At least the own CPU 11a acquires the engine speed in the vehicle in S124. In S125, it is determined whether or not the engine speed is equal to or greater than a rotation threshold value which is a predetermined magnitude of the engine speed. In S126, when the engine speed is equal to or higher than the rotation threshold value, the first set time, which is a predetermined length of time, is set as the allowable time. In S127, when the engine speed is less than the rotation threshold value, a second set time longer than the first set time is set as the allowable time.

For example, when the engine speed is low as in the idle state, it is considered that changes are unlikely to occur in specific conversion data such as fuel pressure. In other words, it is considered unnecessary to update frequently. According to this, when the engine speed is less than the rotation threshold value, the second set time, which is longer than the first set time, is used as the allowable time. Therefore, the frequency of causing the AD converter 14 to perform the AD conversion process is increased. It can be reduced. As a result, it is possible to reduce the situation where the AD converter 14 overlaps the AD conversion requests, and the processing speed can be increased in the ECU 3.

[2-5. Modification example]
Like the own CPU 11a, the other CPU 11b may be configured to change the permissible time for specific data according to the operating state of the own vehicle. That is, the other CPU 11b may be configured to execute the data acquisition process shown in FIG. 7. Here, for example, another CPU 11b may be configured to use the conversion data of the crank angle as specific data and change the permissible time for the crank angle according to the operating state of the own vehicle. The operating state can be set to any state.

[3. Other embodiments]
Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments, and can be implemented in various modifications.

(3a) In the above embodiment, in the ECU 3, the other CPU 11b is configured to perform the same data acquisition process as the own CPU 11a. However, the configuration of the other CPU 11b is not limited to this.

The other CPU 11b may not have a configuration for generating conversion data used by the own CPU 11a in addition to the other CPU 11b in the conversion instruction process executed in S170. That is, the other CPU 11b may be configured to cause the AD converter 14 to generate only the conversion data used by the other CPU 11b in the conversion instruction processing.

(3b) Each of the own CPU 11a and the other CPU 11b may not have a configuration for executing the conversion instruction process when the elapsed time is equal to or longer than the permissible value. For example, each of the own CPU 11a and the other CPU 11b may be configured to execute the conversion instruction process each time the data acquisition process is executed.

(3c) The ECU 3 may not have a configuration for recording the conversion end time in the memory 13. The ECU 3 may be configured to record the conversion end time in the data buffer 47 included in the AD converter 14, for example.

(3d) Each of the own CPU 11a and the other CPU 11b does not have to use a plurality of types of conversion data. At least one conversion data can be used in each of the own CPU 11a and the other CPU 11b.

(3e) In the above embodiment, the permissible time is set for all of the plurality of conversion data used in each of the CPU 11a and the CPU 11b, but the present invention is not limited to this. For example, the permissible time can be set only for the conversion data that is a part of the plurality of conversion data and needs to be updated more frequently.

Further, for example, in the example of FIG. 2, 2500 μsec is set as the allowable time for “in-cylinder pressure 1” to “in-cylinder pressure 4”, and 4000 μsec is set as the allowable time for “fuel pressure 1” to “fuel pressure 4”. The plurality of conversion data may be classified into a plurality of groups such as "in-cylinder pressure group" and "fuel pressure group", and an allowable time may be set for each group.

(3f) In the above embodiment, the shortest permissible time among the permissible times set for each of the plurality of conversion data used in each of the CPU 11a and the CPU 11b is used as the permissible threshold value. However, it is not limited to this. For example, a value less than or equal to the shortest permissible time can be used as the permissible threshold.

(3g) In the above embodiment, the permissible time set for each conversion data is used as the permissible threshold value, but the permissible time is not limited to this. For example, a value less than or equal to the permissible time can be used as the permissible threshold.

(3h) In the above embodiment, the permissible time for the fuel pressure conversion data is changed based on whether or not the engine speed is equal to or higher than the rotation threshold. However, it is not limited to this.

A plurality of rotation threshold values may be set, and a plurality of types of allowable times for fuel pressure conversion data may be set according to the magnitude of the engine speed.
Further, the permissible time according to the operating conditions of the own vehicle can be set for arbitrary conversion data without being limited to the fuel pressure. Further, the operating conditions of the own vehicle can be arbitrarily set without being limited to the engine speed.

(3i) In the above embodiment, digital data such as in-cylinder pressure, fuel pressure, and crank angle are used as conversion data. However, the present invention is not limited to this. Any digital data can be used as the conversion data. Further, the values such as the permissible time, the permissible threshold value, the conversion data, and the conversion end time are not limited to the values used in the description, and any value can be used.

(3j) In the above embodiment, the time at the time when all the conversion data is generated based on the conversion instruction is recorded in the memory 13 as the conversion end time, but the present invention is not limited to this. Even if each of the own CPU 11a and the other CPU 11b is configured to record in the memory 13 in association with the time at that time and the generated conversion data each time the conversion data is generated by the AD converter 14. Good. Further, based on this, the elapsed time for each conversion data may be acquired. Further, it may be determined whether or not the conversion data recorded in the memory 13 is acquired as it is and whether or not the conversion instruction processing is executed based on the elapsed time for each conversion data.

(3k) In the above embodiment, the CPU 11 reads the converted data from the data buffer 47 of the AD converter 14 and writes the converted data to the memory 13, but the present invention is not limited to this. The AD converter 14 may write the converted data from the data buffer 47 to the memory 13.

(3l) In the above embodiment, the ECU 3 includes its own CPU 11a and another CPU 11b, but the ECU 3 is not limited thereto. The ECU 3 may include one or a plurality of CPUs configured in the same manner as the own CPU 11a, and one or a plurality of CPUs configured in the same manner as the other CPU 11b. That is, the ECU 3 may further include one or more CPUs configured in the same manner as the own CPU 11a, or one or more CPUs configured in the same manner as the other CPU 11b.

(3m) A plurality of functions possessed by one component in the above embodiment may be realized by a plurality of components, or one function possessed by one component may be realized by a plurality of components. .. Further, a plurality of functions possessed by the plurality of components may be realized by one component, or one function realized by the plurality of components may be realized by one component. Further, a part of the configuration of the above embodiment may be omitted. In addition, at least a part of the configuration of the above embodiment may be added or replaced with the configuration of the other above embodiment. It should be noted that all aspects included in the technical idea specified from the wording described in the claims are embodiments of the present disclosure.

(3n) In addition to the above-mentioned CPU 11 and ECU 3, the present disclosure is made in various forms such as a program for operating the CPU 11 and ECU 3, a non-transitional actual recording medium such as a semiconductor memory in which this program is recorded, and a conversion data acquisition method. Can also be realized.

[4. Correspondence between the embodiment and the claims]
The ECU 3 corresponds to an electronic control device. Further, the CPU 11 corresponds to a time acquisition unit, a time determination unit, a rotation acquisition unit, a rotation determination unit, a threshold value setting unit, an execution determination unit, a conversion instruction unit, and a data acquisition unit. Further, S110 corresponds to the processing as the time acquisition unit, S124 corresponds to the processing as the rotation acquisition unit, S125 corresponds to the processing as the rotation determination unit, and S126 and S127 correspond to the processing as the threshold value setting unit. To do. Further, S130 corresponds to the processing as the time determination unit, S140 corresponds to the processing as the execution determination unit, S170 corresponds to the processing as the conversion instruction unit, and S190 corresponds to the processing as the data acquisition unit.

3 ECU, 11a, 11b CPU, 13 memory, 14 AD converter.

Claims (8)

Equipped with multiple cores that share one AD converter,
The indicator core, which is at least one of the plurality of cores,
The conversion instruction to cause the AD converter, which generates conversion data by AD conversion processing according to the conversion instruction, to generate the conversion data used by the remaining cores among the plurality of the cores in addition to the conversion data used by the instruction core itself. Is output, and a conversion instruction unit (S170) that stores both conversion data including the conversion data used by the instruction core itself and the conversion data used by the remaining cores generated according to the conversion instruction in the memory, and
A time acquisition unit (S110) for acquiring an elapsed time, which is the time elapsed since the AD conversion process by the AD converter was completed according to the conversion instruction.
A time determination unit (S130) for determining whether or not the elapsed time is equal to or greater than an allowable threshold value which is a predetermined length of time, and
A data acquisition unit (S190) that acquires the conversion data used by the instruction core itself from the memory.
With
When the elapsed time is equal to or greater than the permissible threshold value for the conversion data used by the instruction core itself, the conversion instruction unit causes the AD converter to newly generate both conversion data. Output and store both of the conversion data generated according to the conversion instruction in the memory.
The data acquisition unit itself generates and stores the conversion data used by the instruction core itself from the memory according to the conversion instruction when the elapsed time is equal to or greater than the allowable threshold value. An electronic control device (3) that acquires the conversion data used by the user. The electronic control device according to claim 1.
The conversion instruction unit gives the conversion instruction to the AD converter to newly generate both of the conversion data when the elapsed time is less than the allowable threshold value for the conversion data used by the instruction core itself. Without output
The data acquisition unit acquires the conversion data used by the instruction core itself, which is already stored, from the memory when the elapsed time is less than the allowable threshold value for the conversion data used by the instruction core itself. Electronic control device. Equipped with multiple cores that share one AD converter,
The indicator core, which is at least one of the plurality of cores,
The conversion instruction to cause the AD converter, which generates conversion data by AD conversion processing according to the conversion instruction, to generate the conversion data used by the remaining cores among the plurality of the cores in addition to the conversion data used by the instruction core itself. Is output, and a conversion instruction unit (S170) that stores both conversion data including the conversion data used by the instruction core itself and the conversion data used by the remaining cores generated according to the conversion instruction in the memory, and
A time acquisition unit (S110) for acquiring an elapsed time, which is the time elapsed since the AD conversion process by the AD converter was completed according to the conversion instruction.
A time determination unit (S130) for determining whether or not the elapsed time is equal to or greater than an allowable threshold value which is a predetermined length of time, and
A data acquisition unit (S190) that acquires the conversion data used by the instruction core itself from the memory.
With
The conversion instruction unit gives the conversion instruction to the AD converter to newly generate both of the conversion data when the elapsed time is less than the allowable threshold value for the conversion data used by the instruction core itself. Without output
The data acquisition unit acquires the conversion data used by the instruction core itself, which is already stored, from the memory when the elapsed time is less than the allowable threshold value for the conversion data used by the instruction core itself. Electronic control device (3). The electronic control device according to any one of claims 1 to 3.
The conversion data used by the instruction core itself is of a plurality of types, and at least a part of the plurality of types of conversion data is an allowable time from the generation of the conversion data to the use. Is preset,
The time determination unit is an electronic control device that uses the shortest permissible time among the permissible times set for the conversion data used by the instruction core itself as the permissible threshold value. The electronic control device according to any one of claims 1 to 3.
The conversion data used by the instruction core itself is of a plurality of types, and at least a part of the plurality of types of conversion data is an allowable time from the generation of the conversion data to the use. Is preset,
The time determination unit is an electronic control device that uses the permissible time set for each of the conversion data used by the instruction core itself as the permissible threshold value. The electronic control device according to any one of claims 1 to 5.
The electronic control device is mounted on the vehicle and
The indicator core
Threshold setting units (S126, S127) that change the permissible time according to the operating state of the vehicle for specific data that is at least one of the conversion data used by the instruction core itself.
Electronic control device equipped with. The electronic control device according to claim 6.
The indicator core
A rotation acquisition unit (S124) that acquires the rotation speed of the engine in the vehicle as the operating state of the vehicle, and
A rotation determination unit (S125) for determining whether or not the rotation speed of the engine is equal to or greater than a rotation threshold value which is a predetermined magnitude of the rotation speed of the engine.
With
When the rotation speed of the engine is equal to or higher than the rotation threshold, the threshold setting unit sets a first set time, which is a predetermined length of time, as the allowable time of the specific data, and sets the engine. An electronic control device that sets a second set time, which is longer than the first set time, as the permissible time of the specific data when the rotation speed is less than the rotation threshold. The electronic control device according to any one of claims 1 to 7.
Equipped with the plurality of the indicating core
The indicator core
Execution determination unit (S140) for determining whether or not the AD converter is performing the AD conversion process.
With more
When the conversion instruction unit tries to cause the AD converter to perform the AD conversion process, the data acquisition unit may use the AD converter if the AD converter is performing the AD conversion process. An electronic control device that acquires the conversion data used by the instruction core itself recorded in the memory from the memory after the AD conversion process is completed.