JP2006331185A - Controller, and apparatus, method and program for rewriting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a controller, which can reduce manufacturing costs and secure quality even after storage data is changed, and its rewriting apparatus. <P>SOLUTION: A storage part of the controller is structured so as to have two areas that are an adjustment value storage part and a program storage part. A rewrite processing part of the rewriting apparatus is structured so as to perform program rewrite processing, in which control programs stored in the program storage part of the controller are rewritten into new control programs, and/or adjustment value rewrite processing, in which adjustment values stored in the adjustment value storage part are rewritten into new adjustment values. In addition, a rewrite check processing part of the rewriting apparatus is structured so as to check whether or not rewrite processing is successful. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a control device that stores an control device in a rewritable memory and controls the external device by operating the control program, a rewriting device for the control program, a rewriting method, and a rewriting program, and in particular, suppresses manufacturing costs. Rewriting device capable of improving the reliability of rewriting processing of control programs and adjustment values stored in the control device, control device capable of ensuring quality even after storage data is changed The present invention relates to a method and a rewriting program.

  Conventionally, in an ECU (“electronic control unit”, hereinafter referred to as “control device”) mounted on an automobile or the like, an “adjustment value” that is data that determines the operation of the control device with a wide range of operation. It is common practice to adjust the control device by changing "".

  The adjustment value is stored in a rewritable nonvolatile memory so that it can be rewritten after the control device is manufactured, for example, at the stage of connecting the device to be controlled or at the stage of changing the control content. .

  By the way, a control program operating on such a control device is stored in a rewritable nonvolatile memory for storing a control program in order to cope with a program change such as a specification change or a bug correction. In this case, this control program storage memory is generally provided separately from the adjustment value storage memory described above.

  For example, Patent Document 1 discloses an occupant detection ECU that includes an adjustment value storage memory and a control program storage memory, and that can change an adjustment value stored in the adjustment value storage memory. Yes. Patent Document 2 discloses a memory rewriting device that rewrites a memory of an in-vehicle ECU using wireless communication.

JP 2004-125595 A JP 2004-28000 A

  However, the conventional control device including the adjustment value storing memory and the control program storing memory as in Patent Document 1 has a problem that the manufacturing cost increases because a plurality of memories are mounted.

  For this reason, it is conceivable to store the adjustment value in the control program storage memory. However, simply storing the adjustment value may adversely affect the operation of the stored control program. It becomes difficult to ensure the quality of the control device after rewriting.

  Moreover, the technique of patent document 2 performs the memory rewriting of a control apparatus simply by using radio | wireless, and does not improve the reliability of the memory rewriting of a control apparatus. That is, it discloses a technique that can easily perform memory rewriting of a control device by using wireless communication, and does not indicate a technique for confirming whether or not memory rewriting has been normally performed.

  For these reasons, it is a major issue how to realize a control device that can reduce the manufacturing cost and can ensure the quality even after the storage data is changed. Further, in such a rewriting device for a control device, it is required to improve the reliability of rewriting processing of a control program and adjustment values stored in the control device.

  The present invention has been made to solve the above-described problems caused by the prior art, and can control the manufacturing cost and can ensure the quality even after the stored data is changed. An object of the present invention is to provide a rewriting device, a rewriting method, and a rewriting program capable of improving the reliability of rewriting processing of a control program and adjustment values stored in the apparatus.

  In order to solve the above-described problems and achieve the object, a control device according to the invention of claim 1 stores a control program in a rewritable memory and controls the external device by operating the control program. Comprising: a storage unit having a program storage area as an area for storing the control program and an adjustment value storage area as an area for storing an adjustment value of the control program on the memory; It is characterized by.

  The rewriting device according to the invention of claim 2 includes a program storage area that is an area for storing a control program and an adjustment value storage area that is an area for storing an adjustment value of the control program. A rewriting device that rewrites the memory to a control device that controls an external device by operating the control program based on the adjustment value, and stores the rewrite processing in the program area. Rewriting means for performing a program rewriting process for rewriting a control program stored in a new control program and / or an adjustment value rewriting process for rewriting an adjustment value stored in the adjustment value area with a new adjustment value It is characterized by having.

  According to a third aspect of the present invention, there is provided a rewriting device according to the second aspect of the present invention, wherein the rewritten data storage means for storing the new control program, the new control program for the rewritten data storage means, and the control device. Rewriting confirmation means for confirming whether or not the rewriting process is successful by comparing with the new control program written in the memory.

  According to a fourth aspect of the present invention, there is provided the rewriting device according to the third aspect of the present invention, wherein the rewrite data storage means further stores the new adjustment value, and the rewrite confirmation means is the rewrite data storage means. Whether or not the rewriting process is successful is confirmed by comparing the new adjustment value with the new adjustment value written in the memory of the control device.

  According to a fifth aspect of the present invention, there is provided a rewrite device for storing a control program in a rewritable memory and performing a rewrite process of the memory to a control device that controls an external device by operating the control program. An adjustment value reflecting unit that takes in a control program and an adjustment value and reflects the adjustment value in the control program; and a control program stored in the memory of the control device by the adjustment value reflecting unit. And rewriting means for rewriting the generated adjustment value reflected program.

  According to a sixth aspect of the present invention, the rewriting device according to the fifth aspect of the present invention further comprises reflection confirmation means for confirming the operation of the adjustment value reflected program, and the rewriting means is stored in the memory of the control device. The stored control program is rewritten to the adjustment value reflected program that has been confirmed to operate normally by the reflection checking means.

  According to a seventh aspect of the present invention, there is provided a rewriting device according to the fifth or sixth aspect, wherein the rewritten data storing means for storing the adjusted value reflected program and the adjusted value reflected in the rewritten data storing means. Rewriting confirmation means for confirming whether or not the rewriting process is successful by comparing the program with the adjustment value reflected program written in the memory of the control device; To do.

  The rewriting device according to an invention of claim 8 is the rewriting device according to any one of claims 2 to 7, further comprising communication means for performing communication processing with the control device via an in-vehicle LAN to which the control device is connected. The rewriting means rewrites data stored in the memory of the control device using the communication means.

  The rewriting method according to the invention of claim 9 includes a program storage area that is an area for storing a control program and an adjustment value storage area that is an area for storing an adjustment value of the control program. A rewrite method for rewriting the memory to a control device that controls an external device by operating the control program based on the adjustment value, and stores the rewrite processing in the program area A rewriting step of performing a program rewriting process for rewriting a control program that has been changed to a new control program and / or an adjustment value rewriting process for rewriting the adjustment value stored in the adjustment value area with a new adjustment value. It is characterized by including.

  According to a tenth aspect of the present invention, there is provided a rewriting method for storing a control program in a rewritable memory and performing a rewriting process of the memory to a control device that controls an external device by operating the control program. An adjustment value reflecting step of taking a control program and an adjustment value and reflecting the adjustment value in the control program; and a control program stored in the memory of the control device by the adjustment value reflecting step. And a rewriting step of rewriting the generated adjustment value reflected program.

  The rewrite program according to the invention of claim 11 has a rewrite program having a program storage area that is an area for storing a control program and an adjustment value storage area that is an area for storing an adjustment value of the control program. A rewriting program for rewriting the memory to a control device that controls an external device by operating the control program based on the adjustment value, and stores the rewrite processing in the program area. A rewriting procedure for performing a program rewriting process for rewriting a control program stored in a new control program and / or an adjustment value rewriting process for rewriting an adjustment value stored in the adjustment value area with a new adjustment value. The computer is executed.

  A rewriting program according to a twelfth aspect of the present invention stores a control program in a rewritable memory, and performs a rewriting process of the memory to a control device that controls an external device by operating the control program. An adjustment value reflecting procedure for capturing a control program and an adjustment value and reflecting the adjustment value in the control program, and a control program stored in the memory of the control device according to the adjustment value reflecting procedure. A rewriting procedure for rewriting the generated adjustment value reflected program is executed by a computer.

  According to the first aspect of the present invention, the memory includes a program storage area that is an area for storing a control program and an adjustment value storage area that is an area for storing an adjustment value of the control program. Therefore, by omitting the memory for storing the adjustment value, the manufacturing cost can be reduced, and by separating the storage area for the control program from the storage area for the adjustment value, the storage data can be changed. Also has the effect of ensuring quality.

  According to the second aspect of the present invention, the program rewriting process for rewriting the control program stored in the program area with a new control program and / or the adjustment value stored in the adjustment value area is newly set. Since the adjustment value rewriting process for rewriting to the adjustment value is performed, control is performed by writing the rewrite program and the adjustment value for rewrite in the storage area for the control program and the storage area for the adjustment value, respectively. There is an effect that the reliability of the rewriting process of the control program and the adjustment value stored in the apparatus can be improved.

  According to the invention of claim 3, the rewrite data storage means for storing a new control program, the new control program for the rewrite data storage means, the new control program written in the memory of the control device, And rewriting confirmation means for confirming whether or not the rewriting process has succeeded by comparing the two, the reliability of the rewriting process of the control program is confirmed by confirming the success or failure of the rewriting process of the control program. The effect that can be improved.

  According to the invention of claim 4, the rewrite data storage means further stores a new adjustment value, and the rewrite confirmation means writes the new adjustment value in the rewrite data storage means and the memory of the control device. Since it was configured to check whether or not the rewriting process was successful by comparing with a new adjustment value, the reliability of the rewriting process of the adjustment value was confirmed by checking the success or failure of the rewriting process of the adjustment value. There is an effect that it can be improved.

  According to the invention of claim 5, the adjustment value reflecting means for taking in the control program and the adjustment value and reflecting the adjustment value in the control program, and the control program stored in the memory of the control device In the case where there is no adjustment value storage memory on the control device side by reflecting the adjustment value on the rewriting device side, since the rewriting device for rewriting the adjustment value reflected program generated by the reflection device is provided. Even so, the reliability of the rewrite process can be improved.

  The invention according to claim 6 further includes reflection confirmation means for confirming the operation of the adjustment value reflected program, and the rewriting means stores the control program stored in the memory of the control device by the reflection confirmation means. Since the program is rewritten to the adjustment value reflected program that has been confirmed to operate normally, it is possible to improve the reliability of the rewrite process by confirming the success or failure of the adjustment value reflection process.

  According to the invention of claim 7, the rewritten data storage means for storing the adjustment value reflected program, the adjustment value reflected program of the rewritten data storage means, and the adjustment written in the memory of the control device The rewrite confirmation means for confirming whether or not the rewrite process has been successful by comparing with the value reflected program is further provided, so by confirming the success or failure of the rewrite process of the adjustment value reflected program, There is an effect that the reliability of the rewriting process can be improved.

  According to an eighth aspect of the present invention, the communication device further includes communication means for performing communication processing with the control device via the in-vehicle LAN to which the control device is connected, and the rewriting means is stored in the memory of the control device using the communication means. Since the stored data is rewritten, there is an effect that the rewriting process of the control device connected to the in-vehicle LAN can be efficiently performed.

  According to the ninth aspect of the present invention, a program rewriting process for rewriting a control program stored in the program area with a new control program and / or an adjustment value stored in the adjustment value area is newly set. Since it is configured to include a rewriting process for performing an adjustment value rewriting process for rewriting the adjustment value, the rewriting program and the rewriting adjustment value are written in the storage area for the control program and the storage area for the adjustment value, respectively. As a result, the reliability of the rewriting process of the control program and the adjustment value stored in the control device can be improved.

  According to the tenth aspect of the present invention, the adjustment value reflecting step of taking in the control program and the adjustment value and reflecting the adjustment value in the control program, and the control program stored in the memory of the control device are reflected in the adjustment value. The rewrite process for rewriting the adjustment value reflected program generated by the process is included, so that the adjustment value is reflected on the rewrite device side so that there is no adjustment value storage memory on the control device side. Even if it exists, there exists an effect that the reliability of a rewriting process can be improved.

  According to the eleventh aspect of the present invention, a program rewriting process for rewriting a control program stored in the program area with a new control program and / or an adjustment value stored in the adjustment value area is newly set. Since the computer is configured to execute the rewriting procedure for performing the adjustment value rewriting process for rewriting the adjustment value, the rewrite program and the rewrite adjustment value are respectively stored in the control program storage area and the adjustment value storage area. As a result, the reliability of the rewriting process of the control program and adjustment values stored in the control device can be improved.

  According to the twelfth aspect of the present invention, an adjustment value reflecting procedure for taking in a control program and an adjustment value and reflecting the adjustment value in the control program and a control program stored in the memory of the control device are reflected in the adjustment value. Since the rewriting procedure for rewriting the adjustment value reflected program generated by the procedure is executed by the computer, the adjustment value is reflected on the rewriting device side, so that the adjustment value storing memory is provided on the control device side. Even if it is not, there is an effect that the reliability of the rewriting process can be improved.

  Exemplary embodiments of a control device, a rewriting device, a rewriting method, and a rewriting program according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram illustrating an overview of a control device according to the first embodiment. In FIG. 1, the conventional control device is shown in the upper part, and the control device according to the first embodiment is shown in the lower part. As shown in the upper part of the figure, the conventional control apparatus has a control program storage memory and an adjustment value storage memory separately. In order to make it possible to change the control program and the adjustment value, it is necessary to use a rewritable nonvolatile memory (for example, a flash memory) as these memories.

  As described above, since the conventional control device has the control program storage memory and the adjustment value storage memory, there is a problem that the manufacturing cost of the control device increases. For this reason, it is possible to omit the adjustment value storage memory described above and store the adjustment value in the control program storage memory. By doing so, it is expected that the manufacturing cost of the control device can be suppressed.

  However, if adjustment values are stored in the control program storage memory, normal operation of the control program may be hindered, for example, by destroying part of the stored control program when the adjustment value is rewritten. Absent.

  Therefore, as shown in the lower part of FIG. 1, in the control device according to the first embodiment, the control program storage area for storing the control program and the adjustment value for storing the adjustment value on a single memory. And a storage area. By doing in this way, the manufacturing cost of a control apparatus can be suppressed by omitting the exclusive memory for adjustment value storage.

  Next, the configuration of the control device according to the first embodiment and the rewrite device for performing the rewrite processing of the control device will be described with reference to FIG. FIG. 2 is a functional block diagram illustrating configurations of the control device and the rewriting device according to the first embodiment. As shown in the figure, the control device 10 includes a storage unit 11 and a communication I / F unit 12, and the storage unit 11 further includes an adjustment value storage unit 11a and a program storage unit 11b. Yes.

  The control device 10 has a built-in CPU (not shown) and controls an external device (not shown) by operating a program stored in the storage unit 11. Corresponds to the ECU.

  The storage unit 11 is a storage unit composed of a non-volatile memory in which stored data can be rewritten, such as a flash memory, and stores an adjustment value storage unit 11a that is an area for storing adjustment values, and a control program. It has two areas inside the program storage unit 11b, which are areas for the purpose.

  The communication I / F unit 12 includes a communication device for connecting to an in-vehicle LAN or the like. The communication I / F unit 12 reads data from the storage unit 11 and passes the data to the rewriting device 20 or stores data received from the rewriting device 20 in the storage unit 11. It is a processing unit that performs processing.

  As described above, in the control device 10 according to the first embodiment, the storage unit 11 is configured to have the two areas of the adjustment value storage unit 11a and the program storage unit 11b, and thus a dedicated memory for storing the adjustment value is omitted. As a result, the manufacturing cost of the control device can be reduced. Further, when the rewriting process of the data stored in the storage unit 11 is performed, the rewriting process of the control program and the rewriting process of the adjustment value do not interfere with each other, thereby improving the reliability of the rewriting process. It becomes possible.

  Next, the configuration of the rewriting device 20 according to the first embodiment will be described. The rewriting device 20 includes an input unit 21, a storage unit 22, a control unit 23, and a communication I / F unit 24. The storage unit 22 stores a rewrite adjustment value 22a and a rewrite program 22b, and the control unit 23 further includes a rewrite processing unit 23a and a rewrite check processing unit 23b.

  The rewriting device 20 is a device that performs processing for rewriting the adjustment value or the control program stored in the storage unit 11 of the control device 10. In the first embodiment, the case where the rewriting device 20 performs the rewriting process of the adjustment value and the rewriting process of the control program will be described. However, the present invention is not limited thereto, and a rewriting device that performs the rewriting process of only the adjustment value may be configured. It is also possible to configure a rewriting device that performs rewriting processing of only the control program.

  The input unit 21 is a processing unit that reads a rewrite program (control program) and a rewrite adjustment value. Examples of the input unit 21 include a portable flash memory reading device and a portable recording medium reading device such as an FD (flexible disk) and a CD-ROM.

  The storage unit 22 is a storage unit for temporarily storing the rewrite adjustment value 22a and the rewrite program 22b. The data (22a and 22b) stored in the storage unit 22 is used in the rewrite processing unit 23a and the rewrite check processing unit 23b. In the first embodiment, a case will be described in which a rewrite check process for confirming whether or not the rewrite process for the control device 10 has been successful. However, if this rewrite check process is not performed, the storage unit 22 is performed. The rewrite program and the rewrite adjustment value may be directly transferred from the input unit 21 to the rewrite processing unit 23a without storing the data (22a and 22b).

  The control unit 23 performs a process of rewriting the data stored in the storage unit 11 of the control device 10 using the rewrite data stored in the storage unit 22, and whether or not the rewrite process for the control device 10 has been successful. It is a processing unit that performs a rewrite check process for confirming.

  The rewrite processing unit 23 a reads the rewrite adjustment value 22 a or the rewrite program 22 b from the storage unit 22, and converts the data in the storage unit 11 of the control device 10 to these data (22 a or 22 a or 22) via the communication I / F unit 24. 22b) is a processing unit that performs the rewriting process.

  For example, when rewriting the adjustment value, the rewrite processing unit 23 a reads the rewrite adjustment value 22 a from the storage unit 22, and writes the read rewrite adjustment value 22 a to the adjustment value storage unit 11 a of the control device 10. Include. When rewriting the control program, the rewriting program 22b is read from the storage unit 22, and the read rewriting program 22b is written to the program storage unit 11b of the control device 10.

  The rewrite check processing unit 23b is a processing unit that confirms whether or not the rewrite process of the rewrite program for the control device 10 has succeeded. Specifically, the rewrite check processing unit 23b reads the rewrite program written in the program storage unit 11b of the control device 10 via the communication I / F unit 24, and reads the rewrite program and the storage unit By comparing the program 22 with the rewriting program 22b, a process for confirming whether or not the rewriting process has been normally performed is performed.

  In the first embodiment, a case where a verify check is performed as the confirmation process will be described. However, the present invention is not limited to this, and a simplified check such as a checksum value check may be performed. In the first embodiment, the check target of the rewrite check processing unit 23b is the rewrite program. However, the rewrite adjustment value may be included in the check target.

  The communication I / F unit 24 includes a communication device for connecting to an in-vehicle LAN or the like. The communication I / F unit 24 reads data from the storage unit 22 and passes the data to the control device 10 or stores data received from the control device 10 in the storage unit 22. It is a processing unit that performs processing.

  The rewriting device 20 only needs to be connected to the in-vehicle LAN only when performing the data rewriting process and the rewriting check process. Shall be provided.

  Next, the processing procedure of the rewriting apparatus according to the first embodiment will be described with reference to FIG. FIG. 3 is a flowchart illustrating the processing procedure of the rewriting apparatus according to the first embodiment. As shown in the figure, the rewrite processing unit 23a determines whether or not the rewrite target is an adjustment value (step S101). When the rewrite target is an adjustment value (Yes in step S101), the rewrite adjustment value 22a in the storage unit 22 is read, and the read rewrite adjustment value 22a is written in the adjustment value storage unit 11a of the control device 10. (Step S102), and the process is terminated.

  On the other hand, when the rewrite target is not an adjustment value, that is, when the rewrite target is a control program (No in step S101), the rewrite program 22b in the storage unit 22 is read and the read rewrite program 22b is used as a control device. 10 is written in the program storage unit 11b (step S103). Subsequently, the rewrite check processing unit 23b performs a rewrite check process in order to confirm whether or not the write process to the control device 10 has been successful (step S104), and ends the process.

  Next, a detailed processing procedure of the rewrite check process (step S104) shown in FIG. 3 will be described with reference to FIG. FIG. 4 is a flowchart showing the processing procedure of the rewrite check processing. As shown in the figure, the rewrite check processing unit 23b reads data (data block) stored at a predetermined address (for example, the start address) of the program storage unit 11b of the control device 10 (step S201). Note that the data length of the data to be read can be any length such as 8 bytes or 64 bytes.

  Subsequently, the data stored in the corresponding address (for example, the start address) of the rewriting program 22b stored in the storage unit 22 of the rewriting device 20 is read, and this data is compared with the data read in step S201. (Step S202). If the two data match (step S203, Yes), the processing after step S204 is executed.

  On the other hand, if the two data do not match (step S203, No), the rewriting process is considered to have failed, and the user is notified that the rewriting process is abnormal (step S206). In this case, notification may be performed by blinking an LED lamp or the like, or display on a liquid crystal display, or may be notified by voice using a speaker or the like.

  Subsequently, the processing procedure after step S204 will be described. The rewrite check processing unit 23b determines whether comparison of all data (all data constituting the rewrite program 22b) is completed based on the size of the rewrite program 22b (step S204).

  If comparison for all data has not been completed (No at Step S204), the address position in the program storage unit 11b of the storage device 10 and the address position in the storage unit 22 of the rewrite device 20 are set to the next data. Move to the block position (step S205). Then, the processing after step S201 is repeated.

  On the other hand, when the comparison for all data is completed (step S204, Yes), the user is notified that the rewriting process is normal (step S207), and the process is terminated. In the description of FIG. 4 described above, the case where the confirmation as to whether or not the rewriting process of the control program has been successful has been described. However, the confirmation as to whether or not the rewriting process of the adjustment value has been successful has also been described. The processing procedure of FIG. 4 can be used.

  As described above, in the first embodiment, since the storage unit of the control device is configured to have two areas of the adjustment value storage unit and the program storage unit, the control is performed by omitting the dedicated memory for storing the adjustment value. The manufacturing cost of the apparatus can be suppressed.

  Further, the rewrite processing unit of the rewriting device rewrites the control program stored in the program storage unit of the control device to a new control program, and / or the adjustment value stored in the adjustment value storage unit Since the control value rewriting process and the adjustment value rewriting process do not interfere with each other, the reliability of the rewriting process can be improved. It becomes possible.

  Further, the rewrite check processing unit of the rewrite device reads the rewrite program or rewrite adjustment value stored in the storage unit of the control device and compares it with the rewrite program or rewrite adjustment value on the rewrite device side. Therefore, it is possible to ensure the quality of the control device after the rewriting process.

  In the first embodiment described above, a control device in which the adjustment value storage memory is omitted by providing the control program storage area and the adjustment value storage area on one memory, and the rewriting process for the control apparatus is performed. The rewriting device has been described. However, a configuration in which an area for storing the adjustment value itself is not provided on the control device side may be employed. In a second embodiment described below, a control device that does not have an area for storing an adjustment value and a rewrite device for performing a rewrite process on the control device will be described.

  First, the configuration of the control device according to the second embodiment and the rewrite device for performing the rewrite processing of the control device will be described with reference to FIG. FIG. 5 is a functional block diagram illustrating configurations of a control device and a rewrite device according to the second embodiment. In the following description, differences from the first embodiment will be described, and descriptions of common points with the first embodiment will be omitted.

  As shown in the figure, the control device 10 includes a storage unit 11 and a communication I / F unit 12, but unlike the first embodiment, the storage unit 11 is not divided into regions and is controlled. It is a storage unit for storing only programs.

  Similar to the first embodiment, the rewriting device 20 includes an input unit 21, a storage unit 22, a control unit 23, and a communication I / F unit 24. However, the second embodiment is different from the first embodiment in that the storage unit 22 stores the adjustment value reflected program 22c, and the control unit 23 further includes an adjustment value reflection processing unit 23c and a reflection check processing unit 23d. The rewrite processing unit 23e and the rewrite check processing unit 23f illustrated in FIG. 5 are processing units that perform the same processes as the rewrite processing unit 23a and the rewrite check processing unit 23b illustrated in FIG. Since the data is different, the reference numerals (23e and 23f) are different from those in the first embodiment.

  The adjustment value reflection processing unit 23 c is a processing unit that performs a process of reflecting the rewrite adjustment value in the rewrite program fetched via the input unit 21. That is, in the second embodiment, the rewrite adjustment value is incorporated (reprogrammed) in the rewrite program on the rewrite device 20 side, and the operation of the control program after the adjustment value is reflected is confirmed by the reflection check processing unit 23d described later. After that, the data is written to the control device 10.

  When it is not necessary to rewrite the control program, that is, when only the adjustment value is rewritten, the rewriting device 20 reads the control program from the storage unit 11 of the control device 10 and reflects the adjustment value of the rewriting device 20. The processing unit 23c may reflect the rewrite adjustment value in the read control program.

  The reflection check processing unit 23d is a processing unit that performs processing for confirming whether or not the adjustment value reflection processing is normally performed on the control program in which the adjustment value reflection processing unit 23c reflects the adjustment value. Specifically, the reflection check processing unit 23d performs the adjustment value reflection processing normally by performing check processing such as the checksum value check and verification check described above on the control program on which the adjustment value has been reflected. Check whether or not In this check process, an operation check (for example, an input / output check using a threshold value) for a control program that has already been reflected in the adjustment value may be performed.

  The rewrite processing unit 23e is a processing unit that performs a process of writing a control program, which has been confirmed to have been normally performed by the reflection check processing unit 23d, to the storage unit 11 of the control device 10. In addition, the rewrite processing unit 23e performs processing for storing the control program in the storage unit 22 as the adjustment value reflected program 22c. The adjustment value reflected program 22c is used in a rewrite check processing unit 23f described later.

  The rewrite check processing unit 23 f is a processing unit that confirms whether or not the rewrite processing of the control program for the control device 10 has been successful. Specifically, the rewrite check processing unit 23 f reads the control program written in the storage unit 11 of the control device 10 via the communication I / F unit 24, and adjusts the read control program and the storage unit 22. By comparing with the value reflected program 22c, a process of confirming whether the rewriting process has been normally performed is performed.

  Next, a processing procedure of the rewriting device 20 according to the second embodiment will be described with reference to FIG. FIG. 6 is a flowchart illustrating a processing procedure of the rewrite device 20 according to the second embodiment. As shown in the figure, first, the input unit 21 reads a rewrite program and a rewrite adjustment value (step S301). As described above, the rewriting program may be read from the storage unit 11 of the control device 10.

  Subsequently, the adjustment value reflection processing unit 23c reflects the rewriting adjustment value in the rewriting program (step S302), and the reflection check processing unit 23d checks the adjustment value reflected program (step S303). If the adjustment value is not reflected correctly (No at Step S304), the user is notified that the adjustment value reflection process is abnormal (Step S307), and the process ends. .

  On the other hand, if the adjustment value has been correctly reflected (Yes in step S304), the rewrite processing unit 23e writes the adjustment value reflected program in which the reflection check has been completed to the storage unit 11 of the control device 10 ( Step S305). Then, the rewrite check processing unit 23f performs a rewrite check process (see FIG. 4) (step S306) and ends the process.

  As described above, in the second embodiment, the adjustment value reflection processing unit of the rewriting device reflects the rewriting adjustment value in the rewriting program, and the reflection check processing unit determines whether or not the adjustment value reflection processing has been normally performed. After confirming the configuration, the rewrite processing unit is configured to write the control program that has already been reflected in the adjustment unit to the storage unit of the control unit. The quality of the control device can be ensured.

  Next, a connection example of the control device 10 and the rewriting device 20 described in the first and second embodiments will be described with reference to FIG. FIG. 7 is a diagram illustrating a connection example of the control device 10 and the rewriting device 20. As shown in the figure, the plurality of control devices 10 are connected to an in-vehicle LAN, and a GW (gateway) 50 for connecting the rewrite device 20 is provided in the in-vehicle LAN. When rewriting the control program and adjustment value of the control device 10, the rewriting device 20 is connected to the GW 50.

  And after identifying the control apparatus 10 which performs rewrite processing using control apparatus identification information, such as an IP address and a MAC address, the rewrite process of the applicable control apparatus 10 will be performed. In FIG. 7, the control device 10 connected to the in-vehicle LAN is shown. However, the present invention is not limited to this, and the control devices 10 may be connected by a wireless LAN, and the control devices 10 are connected to each other. The structure which is not carried out may be sufficient.

  Note that the rewriting device shown in the above embodiment exhibits its function by loading a program on a computer and executing it. Specifically, a program including a routine such as the above-described rewrite processing unit is stored in a ROM or the like of a computer of the rewrite device, and the rewrite device loads the program on the CPU and executes the program, thereby according to the present invention. A rewriting device can be formed.

  As described above, the control device, the rewrite device, the rewrite method, and the rewrite program according to the present invention are useful for data rewrite processing on the control device, and are particularly suitable for data rewrite processing of a control device that requires manufacturing cost reduction. ing.

1 is a diagram illustrating an outline of a control device according to Embodiment 1. FIG. FIG. 3 is a functional block diagram illustrating configurations of a control device and a rewriting device according to the first embodiment. 3 is a flowchart illustrating a processing procedure of the rewriting apparatus according to the first embodiment. It is a flowchart which shows the process sequence of a rewriting check process. FIG. 10 is a functional block diagram illustrating configurations of a control device and a rewriting device according to a second embodiment. 10 is a flowchart illustrating a processing procedure of the rewriting apparatus according to the second embodiment. It is a figure which shows the example of a connection of a control apparatus and a rewriting apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Control apparatus 11 Memory | storage part 11a Adjustment value memory | storage part 11b Program memory | storage part 12 Communication I / F part 20 Rewriting apparatus 21 Input part 22 Memory | storage part 22a Rewriting adjustment value 22b Rewriting program 22c Adjustment value reflected program 23 Control part 23a, 23e Rewrite processing unit 23b, 23f Rewrite check processing unit 23c Adjustment value reflection processing unit 23d Reflection check processing unit 24 Communication I / F unit 50 GW (gateway)

Claims (12)

A control device that stores a control program in a rewritable memory and controls an external device by operating the control program,
A storage means having a program storage area as an area for storing the control program and an adjustment value storage area as an area for storing an adjustment value of the control program on the memory. Control device. A rewritable memory having a program storage area which is an area for storing a control program and an adjustment value storage area which is an area for storing an adjustment value of the control program, and based on the adjustment value A rewriting device for rewriting the memory to a control device that controls an external device by operating the control program,
A program rewriting process for rewriting the control program stored in the program area with a new control program, and / or an adjustment value rewriting process for rewriting the adjustment value stored in the adjustment value area with a new adjustment value; A rewriting device comprising rewriting means for performing the above. Rewrite data storage means for storing the new control program;
Rewriting confirmation means for confirming whether rewriting processing has succeeded by comparing the new control program of the rewriting data storage means with the new control program written in the memory of the control device; ,
The rewriting device according to claim 2, further comprising: The rewrite data storage means further stores the new adjustment value,
The rewrite confirmation means determines whether or not the rewrite processing has succeeded by comparing the new adjustment value of the rewrite data storage means with the new adjustment value written in the memory of the control device. The rewriting device according to claim 3, wherein the rewriting device is confirmed. A rewriting device that stores a control program in a rewritable memory and controls the external device by operating the control program, and rewrites the memory.
An adjustment value reflecting means for taking in the control program and the adjustment value and reflecting the adjustment value in the control program;
Rewriting means for rewriting the control program stored in the memory of the control device with the adjustment value reflected program generated by the adjustment value reflecting means;
A rewriting device comprising: A reflection confirmation means for confirming the operation of the adjustment value reflected program;
The rewriting means is
6. The rewriting according to claim 5, wherein the control program stored in the memory of the control device is rewritten to the adjustment value reflected program that has been confirmed to operate normally by the reflection checking means. apparatus. Rewrite data storage means for storing the adjustment value reflected program;
Rewriting confirmation for confirming whether or not the rewriting process has succeeded by comparing the adjusted value reflected program stored in the rewritten data storage means with the adjusted value reflected program written in the memory of the control device Means,
The rewriting device according to claim 5, further comprising: Further comprising communication means for performing communication processing with the control device via an in-vehicle LAN to which the control device is connected;
The rewriting device according to any one of claims 2 to 7, wherein the rewriting unit rewrites data stored in the memory of the control device using the communication unit. A rewritable memory having a program storage area which is an area for storing a control program and an adjustment value storage area which is an area for storing an adjustment value of the control program, based on the adjustment value; A rewriting method for rewriting the memory to a control device that controls an external device by operating the control program,
A program rewriting process for rewriting the control program stored in the program area with a new control program, and / or an adjustment value rewriting process for rewriting the adjustment value stored in the adjustment value area with a new adjustment value; The rewriting method characterized by including the rewriting process of performing. A rewriting method for storing a control program in a rewritable memory and performing rewriting processing of the memory to a control device that controls an external device by operating the control program,
An adjustment value reflecting step for taking in the control program and the adjustment value and reflecting the adjustment value in the control program;
A rewriting step of rewriting the control program stored in the memory of the control device with the adjustment value reflected program generated by the adjustment value reflecting step;
The rewriting method characterized by including. A rewritable memory having a program storage area which is an area for storing a control program and an adjustment value storage area which is an area for storing an adjustment value of the control program, based on the adjustment value; A rewriting program for rewriting the memory to a control device that controls an external device by operating the control program,
A program rewriting process for rewriting the control program stored in the program area with a new control program, and / or an adjustment value rewriting process for rewriting the adjustment value stored in the adjustment value area with a new adjustment value; A rewriting program for causing a computer to execute a rewriting procedure for performing A rewrite program that stores a control program in a rewritable memory and performs rewrite processing of the memory to a control device that controls an external device by operating the control program,
An adjustment value reflecting procedure for taking in the control program and the adjustment value and reflecting the adjustment value in the control program;
A rewriting procedure for rewriting the control program stored in the memory of the control device to the adjustment value reflected program generated by the adjustment value reflecting procedure;
A rewriting program characterized by causing a computer to execute.

Images