CN110134422A - System and method based on OBD and CAN bus downloading flash drive upgrade controller software - Google Patents
System and method based on OBD and CAN bus downloading flash drive upgrade controller software Download PDFInfo
- Publication number
- CN110134422A CN110134422A CN201910319172.8A CN201910319172A CN110134422A CN 110134422 A CN110134422 A CN 110134422A CN 201910319172 A CN201910319172 A CN 201910319172A CN 110134422 A CN110134422 A CN 110134422A
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- entire car
- car controller
- chinese ink
- host computer
- brush dipped
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
- G06F8/654—Updates using techniques specially adapted for alterable solid state memories, e.g. for EEPROM or flash memories
Abstract
The system based on OBD and CAN bus downloading flash drive upgrade controller software that the invention discloses a kind of, host computer writes with a brush dipped in Chinese ink tool for proceeding as follows in the control software upgrade process of entire car controller: host computer, which writes with a brush dipped in Chinese ink tool and sends programming conversation modes by CAN communication equipment and instruct, enters entire car controller in the mode for updating program code；Host computer writes with a brush dipped in Chinese ink tool and sends secure access instruction to entire car controller by CAN communication equipment, and by preset access safety algorithm, progress host computer writes with a brush dipped in Chinese ink the inspection of shaking hands between tool and entire car controller；Host computer writes with a brush dipped in Chinese ink tool and local flash drive and control file is transferred in entire car controller by CAN communication equipment.The present invention compensates for the small deficiency in the space FlashROM of MCU, while improving the execution speed and efficiency of code, enhances the versatility that software writes with a brush dipped in Chinese ink process.
Description
Technical field
The present invention relates to vehicle communication bus technical fields, are based on OBD (On-Board in particular to one kind
Diagnostics, onboard diagnostic system) with CAN (Controller Area Network, controller local area network) bus under
Carry the system and method for flash drive upgrade controller software.
Background technique
It is researched and developed and stage after sale in automobile, often will appear the change due to whole vehicle functions demand and need to having filled
The controller being fitted on vehicle carries out the update of software, and the type of controller is also varied, especially some low and middle-end MCU
FlashRom (the read-only programmable device of the flash) limited storage space of (Microcontroller Unit, micro-control unit),
If updating Flash program using traditional flow scheme of writing with a brush dipped in Chinese ink and needing to be solidificated in independent a few block spaces, keep in this way
The memory space of application code is with regard to extremely limited, while the flash drive of some MCU is not supported to run in FlashRom,
The flash drive Code copying being solidificated in FlashRom must correctly could be held into RAM (random access memory) space
Row, is bound to cause the waste of resource in this way, that is, occupies the space FlashRom and occupy ram space again.Increase software design
Complexity, versatility is strong.
Summary of the invention
The present invention provides a kind of system and method based on OBD and CAN bus downloading flash drive upgrade controller software,
The present invention compensates for the small deficiency in the space FlashROM of MCU, while substantially increasing the execution speed and efficiency of code, enhances
Software writes with a brush dipped in Chinese ink the versatility of process.
In order to achieve this, downloading flash drive upgrade controller software based on OBD and CAN bus designed by the present invention
System, it is characterised in that: it includes that host computer writes with a brush dipped in Chinese ink tool, CAN communication equipment and entire car controller；
The host computer writes with a brush dipped in Chinese ink tool for proceeding as follows in the control software upgrade process of entire car controller:
Host computer is write with a brush dipped in Chinese ink tool and is instructed by CAN communication equipment transmission programming conversation modes to entire car controller, and vehicle is made
Controller enters in the mode for updating program code；
Host computer writes with a brush dipped in Chinese ink tool and sends secure access instruction to entire car controller, by preset by CAN communication equipment
Access safety algorithm carries out host computer and writes with a brush dipped in Chinese ink the inspection of shaking hands between tool and entire car controller；
Host computer writes with a brush dipped in Chinese ink tool and local flash drive and control file is transferred to full-vehicle control by CAN communication equipment
In the RAM of device；
Host computer writes with a brush dipped in Chinese ink tool and carries out algorithm verification to flash drive and control file data, and host computer is write with a brush dipped in Chinese ink tool and will be calculated
Method check results are sent to entire car controller, and host computer writes with a brush dipped in Chinese ink tool to the programming under entire car controller transmission routine control command
Reliability checking command, entire car controller generate corresponding verification according to the programming reliability checking command under routine control command
Value completes the programming reliability verification under routine control command when the algorithm check results are consistent with the check value.
A method of flash drive upgrade controller software being downloaded based on OBD and CAN bus, which is characterized in that it is wrapped
Include following steps:
Step 1: when entire car controller carries out default conversation modes, and to host computer writing with a brush dipped in Chinese ink tool and send confirmation and enter default
After the positive feedback of conversation modes, host computer, which writes with a brush dipped in Chinese ink tool and sends programming conversation modes by CAN communication equipment, to be instructed and gives vehicle control
Device processed enters entire car controller in the mode for updating program code, when entire car controller confirmation enters more new procedures generation
Tool is write with a brush dipped in Chinese ink to host computer after the mode of code and sends positive feedback, and enters step 2；
Step 2: host computer writes with a brush dipped in Chinese ink tool and sends secure access instruction to entire car controller by CAN communication equipment, passes through
Preset access safety algorithm carries out host computer and writes with a brush dipped in Chinese ink the inspection of shaking hands between tool and entire car controller, works as entire car controller
Determine shake hands upcheck after write with a brush dipped in Chinese ink tool to host computer and send positive feedback, and enter step 3；
Step 3: host computer write with a brush dipped in Chinese ink tool local flash drive and control file are transferred to by CAN communication equipment it is whole
In the RAM of vehicle controller, when entire car controller determines the local correct backward host computer brush of flash drive and control file transmission
It writes tool and sends positive feedback, and enter step 4；
Step 4: host computer writes with a brush dipped in Chinese ink tool and carries out algorithm verification to flash drive and control file data, and host computer writes with a brush dipped in Chinese ink work
Algorithm check results are sent entire car controller by tool, and host computer is write with a brush dipped in Chinese ink tool and sent under routine control command to entire car controller
Programming reliability checking command, entire car controller according under routine control command programming reliability checking command generate correspond to
Check value, when the algorithm check results are consistent with the check value, complete routine control command under programming reliability
Verification, entire car controller determine the programming reliability under routine control command verification pass through after to host computer writing with a brush dipped in Chinese ink tool send just
Feedback；
Step 5: host computer writes with a brush dipped in Chinese ink the erasing flash memory command that tool is sent under routine control command and is assigned to entire car controller,
So that entire car controller is executed the order of erasing internal flash code, wipes the code of flash memory internal, entire car controller determines flash memory
Tool, which is write with a brush dipped in Chinese ink, to host computer after the completion of internal code deletion sends positive feedback；
Step 6: host computer, which writes with a brush dipped in Chinese ink tool, will need the flash memory application code updated to be transferred to by CAN communication equipment
In entire car controller, entire car controller completes the application of flash memory to flash memory application code with flash drive and control file
Program code upgrading.
The present invention transmits Flash driving and main protocol communication data to RAM, in this way according to difference by host computer
Controller chip write with a brush dipped in Chinese ink demand only need to change host computer Flash driving and main protocol communication data, it is upper
Machine software remains unchanged, and can be applicable in writing with a brush dipped in Chinese ink for a plurality of chips, and popularization, save the cost can be widely applied.
The present invention is cured to Flash by the way that Flash driving and main control file are transferred to ram space
In memory space, to save the Flash memory space of MCU；Due to the hardware feature of memory, code is run in RAM
Speed and efficiency ratio Flash in it is fast, therefore substantially increase the execution speed and efficiency of code.
Detailed description of the invention
Fig. 1 is the principle of the present invention block diagram；
Fig. 2 is that CAN bus of the invention writes with a brush dipped in Chinese ink main flow block diagram；
Fig. 3 is data transmission flow diagram of the invention；
Fig. 4 is programming conversation modes flow diagram of the invention.
Wherein, 1-host computer writes with a brush dipped in Chinese ink tool, 2-CAN communication equipment, 3-entire car controllers.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
System designed by the present invention based on OBD and CAN bus downloading flash drive upgrade controller software, such as Fig. 1
Shown, it includes that host computer writes with a brush dipped in Chinese ink tool 1, CAN communication equipment 2 and entire car controller 3；
The host computer writes with a brush dipped in Chinese ink tool 1 for proceeding as follows in the control software upgrade process of entire car controller:
Host computer is write with a brush dipped in Chinese ink tool 1 and is instructed by the transmission programming conversation modes of CAN communication equipment 2 to entire car controller 3, makes whole
Vehicle controller 3 enter update program code mode in (main function of the service is to make entire car controller 3 from normal work
Pattern switching writes with a brush dipped in Chinese ink mode to Bootloader)；
Host computer writes with a brush dipped in Chinese ink tool 1 and sends secure access instruction to entire car controller 3, by default by CAN communication equipment 2
Access safety algorithm, carry out host computer write with a brush dipped in Chinese ink between tool 1 and entire car controller 3 inspections of shaking hands (confirm host computer write with a brush dipped in Chinese ink
Tool 1 and entire car controller 3 be all it is legal, just can be carried out the command operation of next step, in this way operation be mainly to ensure that it is upper
The legitimacy of machine and controller, only both sides be all it is legal just allow to execute write with a brush dipped in Chinese ink software process, prevent any user to control
The upgrading of device software processed)；
Host computer writes with a brush dipped in Chinese ink tool 1 and local flash drive and control file is transferred to vehicle control by CAN communication equipment 2
In the RAM (Random Access Memory, random access memory) of device 3 processed, to carry out the FLASH program generation of controller
Code upgrades, and in the present invention, flash drive and control file are the preconditions that controller carries out software upgrading, can save
The space Flash, applicability are stronger；
Host computer writes with a brush dipped in Chinese ink tool 1 and carries out algorithm verification to flash drive and control file data, and host computer writes with a brush dipped in Chinese ink tool 1 will
Algorithm check results are sent to entire car controller 3, and host computer is write with a brush dipped in Chinese ink tool 1 and sent under routine control command to entire car controller 3
Programming reliability checking command, entire car controller 3 according under routine control command programming reliability checking command generate pair
The check value answered, when the algorithm check results are consistent with the check value, the programming completed under routine control command is reliable
Property verification, the design can ensure that host computer and controller end flash drive and control file consistency.
The main function of CAN communication equipment 2 is by data from a type of Bus repeater to another type of bus
Upper carry out communications, as CANoe adapter device tool it be will be in usb bus data forwarding to CAN bus.Host computer brush
It writes tool 1 to connect by usb bus with CAN communication equipment 2, CAN communication equipment 2 passes through CAN bus and entire car controller 3
The connection of OBD interface.
In above-mentioned technical proposal, the entire car controller 3 is used for after receiving programming conversation modes instruction fixed
Address ram (distribute according to different ram spaces, and address may be different, this address must be idle by ram space address
And other application is not used) (specific Filling power is in order to ensure being switched to from application model to the specific Filling power of write-in
The mark that can be write with a brush dipped in Chinese ink after mode is write with a brush dipped in Chinese ink, specific Filling power can be customized, such as 0X5A5AA5A5), it is then, whole
The entrance of vehicle controller 3 diagnostic mode (it is the diagnosis DTC (error code) in order to close current controller into diagnostic mode, in order to avoid
Write with a brush dipped in Chinese ink process and generate error code), diagnostic mode writes with a brush dipped in Chinese ink tool 1 to host computer after passing through and sends positive feedback, meanwhile, entire car controller
3 carry out forced resetting processing, and the effect of forced resetting is after writing with a brush dipped in Chinese ink, and only entire car controller 3 resets, just can be normal
Run updated program, host computer write with a brush dipped in Chinese ink tool 1 receive wait 3 forced resetting of entire car controller after positive feedback after start to connect
Receive subsequent new service command, it is ensured that all transmission data are all complete correct；
Entire car controller 3 is used for after preset access safety algorithm passes through, and sends positive feedback to entire car controller 3.
In above-mentioned technical proposal, host computer writes with a brush dipped in Chinese ink tool 1 and carries out CRC algorithm school to flash drive and control file data
It tests, host computer writes with a brush dipped in Chinese ink tool 1 and sends entire car controller 3 for algorithm check results, and host computer writes with a brush dipped in Chinese ink tool 1 to entire car controller
3 send the programming reliability checking command under routine control command, and entire car controller 3 can according to the programming under routine control command
Corresponding check value is generated by property checking command, when the CRC (Cyclic Redundancy Check, cyclic redundancy check)
When algorithm check results are consistent with the check value, the programming reliability verification under routine control command is completed.
In above-mentioned technical proposal, the carrier that the host computer writes with a brush dipped in Chinese ink tool 1 is diagnostic equipment or PC machine.
In above-mentioned technical proposal, entire car controller 3 generally refers to the controller that software upgrading is supported on vehicle, final to need
The file of writing with a brush dipped in Chinese ink updated needs programming into this controller, and entire car controller 3 is burnt in advance in the fixed memory of internal flash
With the Bootloader Bootloader for mode of writing with a brush dipped in Chinese ink.
A method of flash drive upgrade controller software is downloaded based on OBD and CAN bus, as shown in figs. 2 to 4, it
Include the following steps:
Step 1: when entire car controller 3 carries out default conversation modes, and to host computer write with a brush dipped in Chinese ink tool 1 send confirmation enter it is silent
After recognizing the positive feedback of conversation modes, host computer is write with a brush dipped in Chinese ink tool 1 and is instructed by the transmission programming conversation modes of CAN communication equipment 2 to whole
Vehicle controller 3 enters entire car controller 3 in the mode for updating program code, when the confirmation of entire car controller 3 enters update
Tool 1 is write with a brush dipped in Chinese ink to host computer after the mode of program code and sends positive feedback, and enters step 2；
Step 2: host computer writes with a brush dipped in Chinese ink tool 1 and sends secure access instruction to entire car controller 3 by CAN communication equipment 2, leads to
Preset access safety algorithm is crossed, host computer is carried out and writes with a brush dipped in Chinese ink the inspection of shaking hands between tool 1 and entire car controller 3, when vehicle control
Device 3 processed determine shake hands upcheck after write with a brush dipped in Chinese ink tool 1 to host computer and send positive feedback, and enter step 3；
Step 3: host computer writes with a brush dipped in Chinese ink tool 1 and is transferred to local flash drive and control file by CAN communication equipment 2
In the RAM of entire car controller 3, when entire car controller 3 determines that local flash drive and control file transmission are correct backward upper
Machine writes with a brush dipped in Chinese ink tool 1 and sends positive feedback, and enters step 4；
Step 4: host computer writes with a brush dipped in Chinese ink tool 1 and carries out algorithm verification to flash drive and control file data, and host computer is write with a brush dipped in Chinese ink
Algorithm check results are sent entire car controller 3 by tool 1, and host computer writes with a brush dipped in Chinese ink tool 1 and sends routine control to entire car controller 3
Programming reliability checking command under order, entire car controller 3 is according to the programming reliability checking command under routine control command
Corresponding check value is generated, when the algorithm check results are consistent with the check value, completes the volume under routine control command
The verification of journey reliability, entire car controller 3, which determines, to be write with a brush dipped in Chinese ink after the programming reliability verification under routine control command passes through to host computer
Tool 1 sends positive feedback；
Step 5: host computer writes with a brush dipped in Chinese ink the erasing flash memory command that tool 1 is sent under routine control command and is assigned to entire car controller
3, so that entire car controller 3 is executed the order of erasing internal flash code, wipe the code of flash memory internal, entire car controller 3 determines
The code deletion of flash memory internal writes with a brush dipped in Chinese ink the transmission of tool 1 positive feedback to host computer after the completion, and (characteristic of flash memory is exactly to carry out writing behaviour
It must first be wiped before work, otherwise can not carry out write operation (updating software code))；
Step 6: host computer, which writes with a brush dipped in Chinese ink tool 1, will need the flash memory application code updated to transmit by CAN communication equipment 2
Into entire car controller 3, entire car controller 3 with flash drive and controls file completion flash memory to flash memory application code
Application code upgrading.
Step 7: host computer is write with a brush dipped in Chinese ink tool 1 and is carried out under routine control to the flash drive upgrade file of entire car controller 3
The verification of verification programming reliability and consistency, and entire car controller 3 is resetted after verification passes through.So as to controller generation
Code is run according to the program of update
It before the step 1 of above-mentioned technical proposal, needs to proceed as follows, host computer is write with a brush dipped in Chinese ink tool 1 and sent out to entire car controller 3
It is fed into mode of extension instruction, entire car controller 3 is made to enter mode of extension, the confirmation of entire car controller 3 enters mode of extension
Tool 1, which is write with a brush dipped in Chinese ink, to host computer afterwards sends positive feedback；
Then, host computer writes with a brush dipped in Chinese ink tool 1 and sends the instruction for forbidding diagnostic function to entire car controller 3, makes entire car controller 3
Forbid the diagnostic function of error code, entire car controller 3 confirms that writing with a brush dipped in Chinese ink tool 1 to host computer after the diagnostic function for forbidding error code sends out
Send positive feedback；
Then, host computer writes with a brush dipped in Chinese ink tool 1 and sends Communication Control instruction to entire car controller 3, and entire car controller 3 is made to forbid sending out
It send using message, the confirmation of entire car controller 3, which is forbidden writing with a brush dipped in Chinese ink tool 1 to host computer after sending application message, sends positive feedback.
The step 3 of above-mentioned technical proposal specifically comprises the following steps:
Step 3.1: request downloading (RequestDownload:0x34), host computer write with a brush dipped in Chinese ink tool 1 and inform entire car controller 3
Address, host computer brush are write with a brush dipped in Chinese ink in first piece of binary data byte size of the flash drive data block that will be write with a brush dipped in Chinese ink, and starting
It writes tool 1 and sends request download command to entire car controller 3, entire car controller 3 writes with a brush dipped in Chinese ink tool 1 and entire car controller in host computer
Shaking hands between 3 writes with a brush dipped in Chinese ink tool 1 to host computer in the case where upchecking and sends positive feedback；
Step 3.2: transmission data block (TransferData Block#n:0x36), host computer write with a brush dipped in Chinese ink tool 1 according to flash memory
First piece of binary data byte size of driving data block, and starting write with a brush dipped in Chinese ink address for each flash drive data block (number
Refer to that space address is the continuous program code data to be updated in entire car controller 3, a general program code according to block
File includes multiple data blocks) it is transferred to entire car controller 3,3 real-time judge of entire car controller requires the flash drive number of transmission
Whether all received according to block, positive feedback notice host computer is sent if not receiving all and writes with a brush dipped in Chinese ink the continuation of tool 1
Current flash driving data block is transmitted, enters step 3.3 if all receiving；
Step 3.3: request transmission is exited (RequestTransferExit:0x37), and host computer is write with a brush dipped in Chinese ink the transmission of tool 1 and asked
Transmission is asked to exit command to entire car controller 3, entire car controller 3 judges whether that entire flash drive binary data file all passes
It is finished complete, entire car controller 3, which sends positive and negative host computer of feeding and writes with a brush dipped in Chinese ink tool 1, if end of transmission directly terminates data transmission
Process；If without end of transmission entire car controller 3 send positive feedback notice host computer write with a brush dipped in Chinese ink tool 1 continue to transmit it is remaining
Flash drive binary data file (main function of this service is the transmission for exit current data block)
In above-mentioned technical proposal, the flash drive binary data file is the S format text for meeting motorola standard
Part or the HEX formatted file for meeting Intel standard.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of system based on OBD and CAN bus downloading flash drive upgrade controller software, it is characterised in that: it includes
Host computer writes with a brush dipped in Chinese ink tool (1), CAN communication equipment (2) and entire car controller (3)；
The host computer writes with a brush dipped in Chinese ink tool (1) for proceeding as follows in the control software upgrade process of entire car controller:
Host computer, which writes with a brush dipped in Chinese ink tool (1) and sends programming conversation modes by CAN communication equipment (2), to be instructed and gives entire car controller (3), is made
Entire car controller (3) enters in the mode for updating program code；
Host computer writes with a brush dipped in Chinese ink tool (1) and gives entire car controller (3) by CAN communication equipment (2) transmission secure access instruction, by pre-
If access safety algorithm, carry out host computer write with a brush dipped in Chinese ink the inspection of shaking hands between tool (1) and entire car controller (3)；
Host computer writes with a brush dipped in Chinese ink tool (1) and local flash drive and control file is transferred to vehicle control by CAN communication equipment (2)
In device (3) processed；
Host computer writes with a brush dipped in Chinese ink tool (1) and carries out algorithm verification to flash drive and control file data, and host computer writes with a brush dipped in Chinese ink tool (1) will
Algorithm check results are sent to entire car controller (3), and host computer writes with a brush dipped in Chinese ink tool (1) and sends routine control to entire car controller (3)
Programming reliability checking command under order, entire car controller (3) refer to according to the programming reliability verification under routine control command
It enables and generates corresponding check value, when the algorithm check results are consistent with the check value, complete under routine control command
Program reliability verification.
2. the system according to claim 1 based on OBD and CAN bus downloading flash drive upgrade controller software,
Be characterized in that: the entire car controller (3) is used for special in fixed address ram write-in after receiving programming conversation modes instruction
Fixed Filling power, then, entire car controller (3) enter diagnostic mode, and diagnostic mode is write with a brush dipped in Chinese ink tool (1) to host computer after passing through and sent out
Positive feedback is sent, meanwhile, entire car controller (3) carries out forced resetting processing；
Entire car controller (3) is used for after preset access safety algorithm passes through, and sends positive feedback to entire car controller (3).
3. the system according to claim 1 based on OBD and CAN bus downloading flash drive upgrade controller software,
Be characterized in that: host computer writes with a brush dipped in Chinese ink tool (1) and carries out CRC algorithm verification to flash drive and control file data, and host computer is write with a brush dipped in Chinese ink
Tool (1) sends algorithm check results to entire car controller (3), and host computer is write with a brush dipped in Chinese ink tool (1) and sent to entire car controller (3)
Programming reliability checking command under routine control command, entire car controller (3) are reliable according to the programming under routine control command
Property checking command generate corresponding check value, when the CRC algorithm check results are consistent with the check value, completion routine control
Programming reliability verification under system order.
4. the system according to claim 1 based on OBD and CAN bus downloading flash drive upgrade controller software,
Be characterized in that: the carrier that the host computer writes with a brush dipped in Chinese ink tool (1) is diagnostic equipment or PC machine.
5. the system according to claim 1 based on OBD and CAN bus downloading flash drive upgrade controller software,
Be characterized in that: entire car controller (3) preparatory programming in the fixed memory of internal flash has the Bootloader for the mode of writing with a brush dipped in Chinese ink.
6. a kind of method based on OBD and CAN bus downloading flash drive upgrade controller software, which is characterized in that it includes
Following steps:
Step 1: when entire car controller (3) carries out default conversation modes, and to host computer write with a brush dipped in Chinese ink tool (1) send confirmation enter it is silent
After recognizing the positive feedback of conversation modes, host computer writes with a brush dipped in Chinese ink tool (1) and sends programming conversation modes instruction by CAN communication equipment (2)
Entire car controller (3) are given, enter entire car controller (3) in the mode for updating program code, when entire car controller (3) confirm
It enters after the mode for updating program code and writes with a brush dipped in Chinese ink tool (1) transmission positive feedback to host computer, and enter step 2；
Step 2: host computer writes with a brush dipped in Chinese ink tool (1) and gives entire car controller (3) by CAN communication equipment (2) transmission secure access instruction,
By preset access safety algorithm, carries out host computer and write with a brush dipped in Chinese ink the inspection of shaking hands between tool (1) and entire car controller (3), when
Entire car controller (3) determine shake hands upcheck after write with a brush dipped in Chinese ink tool (1) to host computer and send positive feedback, and enter step 3；
Step 3: host computer writes with a brush dipped in Chinese ink tool (1) and is transferred to local flash drive and control file by CAN communication equipment (2)
In entire car controller (3), when entire car controller (3) determine that local flash drive and control file transmit correct backward host computer
It writes with a brush dipped in Chinese ink tool (1) and sends positive feedback, and enter step 4；
Step 4: host computer writes with a brush dipped in Chinese ink tool (1) and carries out algorithm verification to flash drive and control file data, and host computer writes with a brush dipped in Chinese ink work
Tool (1) sends algorithm check results to entire car controller (3), and host computer writes with a brush dipped in Chinese ink tool (1) and sends example to entire car controller (3)
Programming reliability checking command under process control order, entire car controller (3) is according to the programming reliability under routine control command
Checking command generates corresponding check value, when the algorithm check results are consistent with the check value, completes routine control life
Programming reliability verification under enabling, it is backward that entire car controller (3) determines that the verification of the programming reliability under routine control command passes through
Host computer writes with a brush dipped in Chinese ink tool (1) and sends positive feedback；
Step 5: host computer writes with a brush dipped in Chinese ink the erasing flash memory command that tool (1) is sent under routine control command and is assigned to entire car controller
(3), so that entire car controller (3) is executed the order of erasing internal flash code, wipe the code of flash memory internal, entire car controller
(3) determine that the code deletion of flash memory internal writes with a brush dipped in Chinese ink tool (1) to host computer after the completion and sends positive feedback；
Step 6: host computer writes with a brush dipped in Chinese ink tool (1) and transmits the flash memory application code for needing to update by CAN communication equipment (2)
To in entire car controller (3), entire car controller (3) is completed to dodge to flash memory application code with flash drive and control file
The application code upgrading deposited.
7. the method according to claim 6 based on OBD and CAN bus downloading flash drive upgrade controller software,
Be characterized in that: further including step 7 after the step 6: host computer writes with a brush dipped in Chinese ink tool (1) to the flash drive liter of entire car controller (3)
Grade file carries out the verification of verification programming reliability and consistency under routine control, and makes entire car controller after verification passes through
(3) it is resetted.
8. the method according to claim 6 based on OBD and CAN bus downloading flash drive upgrade controller software,
Be characterized in that: before the step 1, needing to proceed as follows, host computer write with a brush dipped in Chinese ink tool (1) to entire car controller (3) send into
Enter to mode of extension and instruct, entire car controller (3) is made to enter mode of extension, entire car controller (3) confirmation enters mode of extension
Backward host computer writes with a brush dipped in Chinese ink tool (1) and sends positive feedback；
Then, host computer writes with a brush dipped in Chinese ink tool (1) and sends the instruction for forbidding diagnostic function to entire car controller (3), makes entire car controller
(3) forbid the diagnostic function of error code, entire car controller (3), which confirms, writes with a brush dipped in Chinese ink work to host computer after the diagnostic function for forbidding error code
Have (1) and sends positive feedback；
Then, host computer writes with a brush dipped in Chinese ink tool (1) and sends Communication Control instruction to entire car controller (3), forbids entire car controller (3)
Sending application message, entire car controller (3) confirmation forbid after sending application message to host computer write with a brush dipped in Chinese ink tool (1) send it is positive and negative
Feedback.
9. the method according to claim 6 based on OBD and CAN bus downloading flash drive upgrade controller software,
Be characterized in that: step 3 specifically comprises the following steps:
Step 3.1: request downloading, host computer write with a brush dipped in Chinese ink tool (1) and inform the flash drive data that entire car controller (3) will be write with a brush dipped in Chinese ink
Address is write with a brush dipped in Chinese ink in first piece of binary data byte size of block, and starting, and host computer writes with a brush dipped in Chinese ink tool (1) and sends request downloading life
It enables and giving entire car controller (3), entire car controller (3) writes with a brush dipped in Chinese ink the inspection of shaking hands between tool (1) and entire car controller (3) in host computer
It tests and writes with a brush dipped in Chinese ink tool (1) transmission positive feedback to host computer in the case where；
Step 3.2: transmission data block, host computer write with a brush dipped in Chinese ink tool (1) according to first piece of binary data of flash drive data block
Byte-sized, and starting write with a brush dipped in Chinese ink address and give each flash drive transmission of data blocks to entire car controller (3), entire car controller
(3) real-time judge requires whether the flash drive data block of transmission all receives, and sends out if not receiving all
Send positive feedback notice host computer write with a brush dipped in Chinese ink tool (1) continue transmit current flash driving data block, if all receive if into
Enter step 3.3；
Step 3.3: request transmission is exited, and host computer writes with a brush dipped in Chinese ink tool (1) transmission request transmission and exits command to entire car controller
(3), entire car controller (3) judges whether entire flash drive binary data file all end of transmissions, if end of transmission
Entire car controller (3), which sends positive and negative host computer of feeding, which writes with a brush dipped in Chinese ink tool (1), directly terminates data transmission process；If do not transmitted
Finish, entire car controller (3) send positive feedback notice host computer write with a brush dipped in Chinese ink tool (1) continue to transmit remaining flash drive two into
Data file processed.
10. the method according to claim 9 based on OBD and CAN bus downloading flash drive upgrade controller software,
Be characterized in that: the flash drive binary data file is to meet the S formatted file of motorola standard or meet Intel to mark
Quasi- HEX formatted file.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910319172.8A CN110134422A (en) | 2019-04-19 | 2019-04-19 | System and method based on OBD and CAN bus downloading flash drive upgrade controller software |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910319172.8A CN110134422A (en) | 2019-04-19 | 2019-04-19 | System and method based on OBD and CAN bus downloading flash drive upgrade controller software |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110134422A true CN110134422A (en) | 2019-08-16 |
Family
ID=67570636
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| CN201910319172.8A Pending CN110134422A (en) | 2019-04-19 | 2019-04-19 | System and method based on OBD and CAN bus downloading flash drive upgrade controller software |
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| CN111240695A (en) * | 2020-01-07 | 2020-06-05 | 中车株洲电力机车有限公司 | Online programming method for suspension controller of medium-low speed maglev train |
| CN111475187A (en) * | 2020-03-25 | 2020-07-31 | 一汽奔腾轿车有限公司 | Software flashing equipment capable of realizing single-electric-control flashing and OBD (on-board diagnostics) flashing |
| CN111475174A (en) * | 2020-03-31 | 2020-07-31 | 东风汽车集团有限公司 | Device and method for online writing and configuration of vehicle-mounted gateway |
| CN111813076A (en) * | 2020-06-23 | 2020-10-23 | 深圳市元征科技股份有限公司 | Vehicle ECU (electronic control Unit) flashing method and device, vehicle ECU and storage medium |
| CN112015453A (en) * | 2020-09-14 | 2020-12-01 | 德明通讯（上海）有限责任公司 | Firmware upgrading method for OBD (on-Board diagnostics) embedded equipment |
| CN112579105A (en) * | 2020-12-10 | 2021-03-30 | 东风汽车集团有限公司 | Flash method of whole vehicle initialization controller and related equipment |
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| CN114443111A (en) * | 2022-04-11 | 2022-05-06 | 长安新能源南京研究院有限公司 | Method and system for local differential flashing of controller |
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| CN110825412B (en) * | 2019-11-01 | 2023-06-02 | 上海电气集团股份有限公司 | LabVIEW-based controller program refreshing system and method |
| CN110825412A (en) * | 2019-11-01 | 2020-02-21 | 上海电气集团股份有限公司 | Controller program flashing system and method based on LabVIEW |
| CN111240695A (en) * | 2020-01-07 | 2020-06-05 | 中车株洲电力机车有限公司 | Online programming method for suspension controller of medium-low speed maglev train |
| CN111240695B (en) * | 2020-01-07 | 2023-08-08 | 中车株洲电力机车有限公司 | Online programming method for levitation controller of medium-low speed maglev train |
| CN111475187A (en) * | 2020-03-25 | 2020-07-31 | 一汽奔腾轿车有限公司 | Software flashing equipment capable of realizing single-electric-control flashing and OBD (on-board diagnostics) flashing |
| CN111475187B (en) * | 2020-03-25 | 2023-09-08 | 一汽奔腾轿车有限公司 | Software refreshing equipment capable of realizing single-electric control refreshing and OBD refreshing |
| CN111475174A (en) * | 2020-03-31 | 2020-07-31 | 东风汽车集团有限公司 | Device and method for online writing and configuration of vehicle-mounted gateway |
| CN111813076A (en) * | 2020-06-23 | 2020-10-23 | 深圳市元征科技股份有限公司 | Vehicle ECU (electronic control Unit) flashing method and device, vehicle ECU and storage medium |
| CN111813076B (en) * | 2020-06-23 | 2021-09-07 | 深圳市元征科技股份有限公司 | Vehicle ECU (electronic control Unit) flashing method and device, vehicle ECU and storage medium |
| CN112015453A (en) * | 2020-09-14 | 2020-12-01 | 德明通讯（上海）有限责任公司 | Firmware upgrading method for OBD (on-Board diagnostics) embedded equipment |
| CN112579105A (en) * | 2020-12-10 | 2021-03-30 | 东风汽车集团有限公司 | Flash method of whole vehicle initialization controller and related equipment |
| CN112579105B (en) * | 2020-12-10 | 2023-03-03 | 东风汽车集团有限公司 | Flash method of whole vehicle initialization controller and related equipment |
| CN113342384A (en) * | 2021-07-07 | 2021-09-03 | 江铃汽车股份有限公司 | Security access strategy for vehicle controller module |
| CN113342384B (en) * | 2021-07-07 | 2024-03-15 | 江铃汽车股份有限公司 | Safety access strategy of vehicle controller module |
| CN114443111A (en) * | 2022-04-11 | 2022-05-06 | 长安新能源南京研究院有限公司 | Method and system for local differential flashing of controller |
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