CN102033765A - BCM (Body Control Module) program upgrading method and vehicle-mounted electronic control system upgrading method - Google Patents
BCM (Body Control Module) program upgrading method and vehicle-mounted electronic control system upgrading method Download PDFInfo
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- CN102033765A CN102033765A CN2010105734681A CN201010573468A CN102033765A CN 102033765 A CN102033765 A CN 102033765A CN 2010105734681 A CN2010105734681 A CN 2010105734681A CN 201010573468 A CN201010573468 A CN 201010573468A CN 102033765 A CN102033765 A CN 102033765A
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Abstract
The embodiment of the invention discloses a BCM (Body Control Module) program upgrading method and a vehicle-mounted electronic control system upgrading method. The BCM program upgrading method comprises the steps of: a, connecting an external device with a BCM by virtue of a vehicle diagnosis interface and a communication data line, wherein the external device provides an upgrading program for the BCM; b, receiving a BCM upgrading program by the RAM (random access memory) of the BCM and writing the BCM upgrading program into the flash of the BCM; and c, repeating the step b until the BCM upgrading program is completely written into the flash of the BCM, and starting a BCM resetting program. The BCM program upgrading method and the vehicle-mounted electronic control system upgrading method provided by the embodiment of the invention can be used for upgrading the BCM by virtue of the vehicle diagnosis interface without dismounting the BCM module, thus reducing maintenance period and improving user productivity.
Description
Technical field
The present invention relates to the upgrade method of electronic system, relate in particular to a kind of BCM programme upgrade method and controlled vehicle-mounted electrical system upgrade method.
Background technology
Car body controller (BCM, Body Control Module) is mainly used in lamp, door, window and vehicle body guarding portion in the control car body, bears the performance and safe realization of car load jointly with other modules, for driving brings more intelligent and comfortable.
Along with development of electronic technology, increasing vehicle electronic device is applied on automobile, makes BCM need controlling object more and more.Simultaneously, the function of each electronic equipment is also more and more, and various function all needs to realize by BCM, requires function that BCM has also from strength to strength.Above-mentioned trend has caused vehicle in use, can run into situation about need upgrade to its BCM.
But, the inventor finds in implementing process of the present invention, the program of present automobile BCM all is solidificated in the chip, when program can't operate as normal or is needed to upgrade upgrading, need user or maintenance station that BCM is taken off, post to producer then and upgrade, so not only can increase the probability of damage of hardware, and the maintenance cycle that extended, influence user's productivity effect.
Summary of the invention
Embodiment of the invention technical matters to be solved is, a kind of BCM programme upgrade method and controlled vehicle-mounted electrical system upgrade method are provided, can upgrade to BCM, avoid dismantling the BCM module by the vehicle diagnosis interface, thereby the shortening maintenance cycle improves user's productivity effect.
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of BCM programme upgrade method, comprising:
Step a, external unit is connected with BCM by vehicle diagnosis interface and communication data line; Described external unit is the equipment that ROMPaq is provided for described BCM;
Step b, the random access memory of BCM (RAM, random access memory) receives one section BCM ROMPaq, and it is write among the flash memory Flash of described BCM;
Step c, repeating step b after described BCM ROMPaq all writes the Flash of described BCM, starts the BCM reset routine.
Wherein, described step a comprises:
Step a1, external unit is connected with the BCM of automobile with the K line by the vehicle diagnosis interface;
Step a2, the described BCM of external unit accessed in safe mode;
Step a3, described BCM enters programming mode.
Wherein, described step b comprises:
Step b1 copies upgrading boot and flash memory Flash read-write capability program among the RAM of BCM to;
Step b2 moves described upgrading boot, receives the BCM ROMPaq that described external unit sends;
Step b3 moves described Flash read-write capability program, and described BCM ROMPaq is write among the Flash of described BCM.
Wherein, described step b also comprises:
Step b4, when in the Flash of described BCM, writing the BCM ROMPaq at every turn, replacement watchdog reset program; Then
Step c is that repeating step b2 to b4 after described BCM ROMPaq all writes the Flash of described BCM, moves described watchdog reset program, and described BCM is resetted.
Wherein, described external unit carries out segmentation according to the RAM amount of capacity of described BCM to described BCM ROMPaq, and transmits to the RAM of described BCM piecemeal.
Wherein, the data message between external unit and the BCM adopts On-Board Diagnostics (OBD) consensus standard (KWP2000, Key Word Protocol 2000) alternately.
Correspondingly, the embodiment of the invention also provides a kind of controlled vehicle-mounted electrical system upgrade method, comprising:
Steps A, external unit is by vehicle diagnosis interface and communication data line line, and system is connected with controlled vehicle-mounted electrical; Described external unit is the equipment that ROMPaq is provided for described controlled vehicle-mounted electrical system;
Step B, controlled vehicle-mounted electrical system receive the electric-control system ROMPaq, and it is write among the Flash of described controlled vehicle-mounted electrical system;
Step C, all write the Flash of described controlled vehicle-mounted electrical system in described electric-control system ROMPaq after, start reset routine.
Wherein, described steps A comprises:
Steps A 1, external unit is connected with the controlled vehicle-mounted electrical system of automobile with the K line by the vehicle diagnosis interface;
Steps A 2, the described controlled vehicle-mounted electrical of external unit accessed in safe mode system;
Steps A 3, described controlled vehicle-mounted electrical system enters programming mode.
Wherein, the data message between the external unit controlled vehicle-mounted electrical system upgrade method adopts On-Board Diagnostics (OBD) consensus standard KWP2000 alternately.
Implement BCM programme upgrade method and controlled vehicle-mounted electrical system upgrade method that the embodiment of the invention provides, under the situation of not dismantling BCM,, be connected with external unit by the vehicle diagnosis interface.When BCM need upgrade, the upgrading boot is copied among the RAM of BCM, move the program among the RAM then, to need the data of upgrading and program to receive to come and write the Flash of BCM from diagnose interface, thereby reach the function that makes the BCM upgrading, this method avoids dismantling the BCM module, thereby shortens maintenance cycle, improves user's productivity effect.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the BCM programme upgrade method first embodiment schematic flow sheet provided by the invention;
Fig. 2 is the BCM programme upgrade method second embodiment schematic flow sheet provided by the invention;
Fig. 3 is a controlled vehicle-mounted electrical system upgrade method embodiment schematic flow sheet provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Referring to Fig. 1, be the BCM programme upgrade method first embodiment schematic flow sheet provided by the invention, as shown in Figure 1:
Step a, external unit is by vehicle diagnosis interface and communication data line, and BCM is connected with car body controller; Described external unit is the equipment that ROMPaq is provided for described BCM.
Step b, the random access memory ram of BCM receives one section BCM ROMPaq, and it is write among the flash memory Flash of described BCM.
Step c, repeating step b after described BCM ROMPaq all writes the Flash of described BCM, starts the BCM reset routine.
Implement the BCM programme upgrade method that the embodiment of the invention provides, under the situation of not dismantling BCM,, be connected with external unit by the vehicle diagnosis interface.When BCM need upgrade, the upgrading boot is copied among the RAM of BCM, move the program among the RAM then, to need the data of upgrading and program to receive to come and write the Flash of BCM from diagnose interface, thereby reach the function that makes the BCM upgrading, this method avoids dismantling the BCM module, thereby shortens maintenance cycle, improves user's productivity effect.
Referring to Fig. 2, be the BCM programme upgrade method second embodiment schematic flow sheet provided by the invention, in the present embodiment, with the flow process of this BCM programme upgrade method of more detailed description, as shown in Figure 2:
Step a1, external unit is connected with the BCM of automobile with the K line by the vehicle diagnosis interface; Described external unit is the equipment that ROMPaq is provided for described BCM, for example computer.More specifically, present automobile all has the vehicle diagnosis interface for the ease of the fault that the diagnosis auto electric equipment may occur, and the various electric equipments on the automobile all are connected with this vehicle diagnosis interface.Outside diagnosis diagnostic detection device just can detect the situation of each electric equipment on the automobile by this vehicle diagnosis interface, and whether judge has fault to occur.
In the present invention, will be connected with the vehicle diagnosis interface by the K line for the external unit that BCM provides ROMPaq, thus being connected of realization external unit and BCM.The K line refers to the order wire of using on the automobile, and is similar with the effect of Serial Port Line, and for 16 vehicle diagnosis interface, its No. 7 pins can be used for connecting the K line.
Step a2 is after external unit and the BCM successful connection, with this BCM of accessed in safe mode.
Step a3, external unit control BCM enters programming mode, closes other function of BCM.
Step b1 copies upgrading boot and Flash read-write capability program among the RAM of BCM to.
Step b2 moves described upgrading boot, receives the BCM ROMPaq that described external unit sends.More specifically, the RAM of BCM is general, and capacity is less, the BCM ROMPaq often can not the directly complete RAM that copies BCM in, so in the present embodiment, external unit carries out segmentation according to the RAM amount of capacity of BCM to described BCM ROMPaq, and transmits to the RAM of described BCM piecemeal.
Further, data message between external unit and the BCM adopts On-Board Diagnostics (OBD) consensus standard KWP2000 alternately, external unit is converted to the form that the KWP2000 agreement is stipulated at first according to the KWP2000 protocol requirement with the BCM ROMPaq, then the RAM of its segmentation to BCM is transmitted.RAM with 16KB is an example, and the each BCM ROMPaq section that transmits of external unit can be controlled at about 1KB.
Step b3 moves described Flash read-write capability program, and described BCM ROMPaq is write among the Flash of described BCM.In the process that in Flash, writes the BCM ROMPaq, can carry out effect, in order to avoid error code appears in program code in transport process, guarantee to write the reliability of the BCM ROMPaq among the Flash.
Step b4, when in the Flash of described BCM, writing the BCM ROMPaq at every turn, replacement watchdog reset program.For general equipment, after upgrading is finished, can adopt the mode of power-off restarting to make the device reset operation usually, but in mobile unit, because equipment is in the state that powers on always, so need reset with the watchdog reset program.Write the BCM ROMPaq at every turn in the Flash of BCM, show that promptly BCM upgrading do not finish, wouldn't need resets restarts, so the replacement of watchdog reset program need be avoided its operation, causes BCM to reset.
Step c, repeating step b2 to b4 after described BCM ROMPaq all writes the Flash of described BCM, moves described watchdog reset program, and described BCM is resetted.
Implement the BCM programme upgrade method that the embodiment of the invention provides, under the situation of not dismantling BCM,, be connected with external unit by the vehicle diagnosis interface.When BCM need upgrade, the upgrading boot is copied among the RAM of BCM, move the program among the RAM then, to need the data of upgrading and program to receive to come and write the Flash of BCM from diagnose interface, thereby reach the function that makes the BCM upgrading, this method avoids dismantling the BCM module, thereby shortens maintenance cycle, improves user's productivity effect.
Referring to Fig. 3, be controlled vehicle-mounted electrical system upgrade method embodiment schematic flow sheet provided by the invention, as shown in Figure 3:
Steps A, external unit is by vehicle diagnosis interface and communication data line, and system is connected with controlled vehicle-mounted electrical; Described external unit is the equipment that ROMPaq is provided for described controlled vehicle-mounted electrical system.
Step B, controlled vehicle-mounted electrical system receive the electric-control system ROMPaq, and it is write among the Flash of described controlled vehicle-mounted electrical system.
Step C, all write the Flash of described controlled vehicle-mounted electrical system in described electric-control system ROMPaq after, start reset routine.
Further, described steps A comprises:
Steps A 1, external unit is connected with the controlled vehicle-mounted electrical system of automobile with the K line by the vehicle diagnosis interface.More specifically, present automobile all has the vehicle diagnosis interface for the ease of the fault that diagnosis controlled vehicle-mounted electrical system may occur, and each controlled vehicle-mounted electrical system on the automobile all is connected with this vehicle diagnosis interface.Outside diagnosis diagnostic detection device just can detect the situation of each controlled vehicle-mounted electrical system on the automobile by this vehicle diagnosis interface, and whether judge has fault to occur.
In the present invention, external unit is connected with the vehicle diagnosis interface by the K line, thus being connected of realization external unit and controlled vehicle-mounted electrical system.The K line refers to the order wire of using on the automobile, and is similar with the effect of Serial Port Line, and for 16 vehicle diagnosis interface, its No. 7 pins can be used for connecting the K line.
Steps A 2 is after external unit and the BCM successful connection, with accessed in safe mode controlled vehicle-mounted electrical system.
Steps A 3, external unit control controlled vehicle-mounted electrical system enters programming mode, closes other function of controlled vehicle-mounted electrical system.
Step B, the controlled vehicle-mounted electrical system receives the electric-control system ROMPaq and writes among the Flash, and the general capacity of the RAM of controlled vehicle-mounted electrical system is less, controlled vehicle-mounted electrical system upgrade program often can not be directly complete copy in the controlled vehicle-mounted electrical system, so in the present embodiment, external unit carries out segmentation to described controlled vehicle-mounted electrical system upgrade program, and transmits to the controlled vehicle-mounted electrical system piecemeal according to the amount of capacity of RAM in the controlled vehicle-mounted electrical system.
Further, in the present embodiment, data message between external unit and the controlled vehicle-mounted electrical system adopts On-Board Diagnostics (OBD) consensus standard KWP2000 alternately, external unit is at first according to the KWP2000 protocol requirement, the BCM ROMPaq is converted to the form that the KWP2000 agreement is stipulated, then its segmentation is transmitted to the controlled vehicle-mounted electrical system.
Step C after the electric-control system ROMPaq all writes Flash, starts reset routine.Because the controlled vehicle-mounted electrical system is in power-up state always, so in embodiments of the present invention, the controlled vehicle-mounted electrical system that finishes upgrading is resetted with the watchdog reset program.
Implement the controlled vehicle-mounted electrical system upgrade method that the embodiment of the invention provides,, be connected with external unit by the vehicle diagnosis interface, directly ROMPaq is write in the controlled vehicle-mounted electrical system, avoid dismantling the controlled vehicle-mounted electrical system, thereby shorten maintenance cycle, improve user's productivity effect.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
Above disclosed is a kind of preferred embodiment of the present invention only, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (9)
1. a BCM programme upgrade method is characterized in that, comprising:
Step a, external unit is by vehicle diagnosis interface and communication data line, and BCM is connected with car body controller; Described external unit is the equipment that ROMPaq is provided for described BCM;
Step b, the random access memory ram of BCM receives one section BCM ROMPaq, and it is write among the flash memory Flash of described BCM;
Step c, repeating step b after described BCM ROMPaq all writes the Flash of described BCM, starts the BCM reset routine.
2. BCM programme upgrade method as claimed in claim 1 is characterized in that, described step a comprises:
Step a1, external unit is connected with the BCM of automobile with the K line by the vehicle diagnosis interface;
Step a2, the described BCM of external unit accessed in safe mode;
Step a3, described BCM enters programming mode.
3. BCM programme upgrade method as claimed in claim 1 is characterized in that, described step b comprises:
Step b1 copies upgrading boot and flash memory Flash read-write capability program among the RAM of BCM to;
Step b2 moves described upgrading boot, receives the BCM ROMPaq that described external unit sends;
Step b3 moves described Flash read-write capability program, and described BCM ROMPaq is write among the Flash of described BCM.
4. BCM programme upgrade method as claimed in claim 3 is characterized in that, described step b also comprises:
Step b4, when in the Flash of described BCM, writing the BCM ROMPaq at every turn, replacement watchdog reset program; Then
Step c is that repeating step b2 to b4 after described BCM ROMPaq all writes the Flash of described BCM, moves described watchdog reset program, and described BCM is resetted.
5. BCM programme upgrade method as claimed in claim 3 is characterized in that, described external unit carries out segmentation according to the RAM amount of capacity of described BCM to described BCM ROMPaq, and transmits to the RAM of described BCM piecemeal.
6. as each described BCM programme upgrade method in the claim 1 to 5, it is characterized in that the data message between external unit and the BCM adopts On-Board Diagnostics (OBD) consensus standard KWP2000 alternately.
7. a controlled vehicle-mounted electrical system upgrade method is characterized in that, comprising:
Steps A, external unit is by vehicle diagnosis interface and communication data line, and system is connected with controlled vehicle-mounted electrical; Described external unit is the equipment that ROMPaq is provided for described controlled vehicle-mounted electrical system;
Step B, controlled vehicle-mounted electrical system receive the electric-control system ROMPaq, and it is write among the Flash of described controlled vehicle-mounted electrical system;
Step C, all write the Flash of described controlled vehicle-mounted electrical system in described electric-control system ROMPaq after, start reset routine.
8. controlled vehicle-mounted electrical system upgrade method as claimed in claim 7 is characterized in that described steps A comprises:
Steps A 1, external unit is connected with the controlled vehicle-mounted electrical system of automobile with the K line by the vehicle diagnosis interface;
Steps A 2, the described controlled vehicle-mounted electrical of external unit accessed in safe mode system;
Steps A 3, described controlled vehicle-mounted electrical system enters programming mode.
9. as each described controlled vehicle-mounted electrical system upgrade method in the claim 7 to 8, it is characterized in that the data message between the external unit controlled vehicle-mounted electrical system upgrade method adopts On-Board Diagnostics (OBD) consensus standard KWP2000 alternately.
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| CN102381266A (en) * | 2011-08-15 | 2012-03-21 | 东南（福建）汽车工业有限公司 | Whole automobile control system for electric automobile |
| CN103678992A (en) * | 2013-11-25 | 2014-03-26 | 深圳市元征科技股份有限公司 | Registering and logging method for vehicle diagnosis device |
| CN103744707A (en) * | 2014-01-20 | 2014-04-23 | 深圳市道通科技有限公司 | Method, device and system for upgrading program of VCI (virtual channel identifier) equipment |
| CN106959868A (en) * | 2016-11-02 | 2017-07-18 | 惠州市德赛西威汽车电子股份有限公司 | The upgrade method of vehicle-mounted software |
| CN109254806A (en) * | 2018-09-20 | 2019-01-22 | 北京交大思诺科技股份有限公司 | BTM protocol configuration recognition unit |
| CN109918102A (en) * | 2019-01-30 | 2019-06-21 | 深圳市赛格车圣科技有限公司 | Car body control module upgrade method and device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102381266A (en) * | 2011-08-15 | 2012-03-21 | 东南（福建）汽车工业有限公司 | Whole automobile control system for electric automobile |
| CN103678992A (en) * | 2013-11-25 | 2014-03-26 | 深圳市元征科技股份有限公司 | Registering and logging method for vehicle diagnosis device |
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| CN109254806A (en) * | 2018-09-20 | 2019-01-22 | 北京交大思诺科技股份有限公司 | BTM protocol configuration recognition unit |
| CN109254806B (en) * | 2018-09-20 | 2021-05-14 | 北京交大思诺科技股份有限公司 | BTM protocol configuration identification unit |
| CN109918102A (en) * | 2019-01-30 | 2019-06-21 | 深圳市赛格车圣科技有限公司 | Car body control module upgrade method and device |
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