CN111399949A - Method for starting background debugging function of automobile instrument - Google Patents
Method for starting background debugging function of automobile instrument Download PDFInfo
- Publication number
- CN111399949A CN111399949A CN202010255650.6A CN202010255650A CN111399949A CN 111399949 A CN111399949 A CN 111399949A CN 202010255650 A CN202010255650 A CN 202010255650A CN 111399949 A CN111399949 A CN 111399949A
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- dcon
- vehicle
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- mounted system
- parent process
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- 238000000034 method Methods 0.000 title claims abstract description 116
- 230000006854 communication Effects 0.000 claims abstract description 67
- 238000004891 communication Methods 0.000 claims abstract description 67
- 230000007175 bidirectional communication Effects 0.000 claims description 3
- 238000013404 process transfer Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/448—Execution paradigms, e.g. implementations of programming paradigms
- G06F9/4482—Procedural
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/542—Event management; Broadcasting; Multicasting; Notifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/544—Buffers; Shared memory; Pipes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/161—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
- H04L69/162—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields involving adaptations of sockets based mechanisms
Abstract
The invention discloses a method for starting a debugging function at a background, which comprises the following steps: setting a vehicle-mounted key module entering a vehicle-mounted system to start a dcon parent process; creating a shell sub-process for capturing serial port data of the vehicle-mounted system, and creating two communication pipelines to enable the dcon parent process to be in two-way communication with the shell sub-process; the shell sub-process redirects the standard output, standard error and standard input of the dcon parent process and the shell sub-process through a dup2 function called by a vehicle-mounted system; the dcon parent process is in communication connection with the socket; and the socket of the vehicle-mounted system is in communication connection with the socket of the upper computer through TCP/UDP, and serial port data of the vehicle-mounted system of the dcon parent process is sent to the upper computer through the socket. According to the invention, serial port communication data of the vehicle-mounted system is captured by the shell child process and sent to the dcon parent process, the socket receives the serial port data of the vehicle-mounted system of the dcon parent process and sends the serial port data to the upper computer through the TCP/UDP communication protocol, a serial port communication line needing to be welded is omitted, the inside of a vehicle body is prevented from being disassembled and assembled, and the cost is reduced.
Description
Technical Field
The invention relates to the field of automobile instrument debugging, in particular to a method for starting a background debugging function of an automobile instrument.
Background
At present, after automobiles are assembled and leave factories and enter markets, due to safety considerations, data tampering caused by random invasion of others is prevented, and serial port communication functions of embedded parts (such as embedded parts of automobile instruments) installed inside the automobiles are shielded. When the automobile instrument has a BUG or system information in the dial plate of the automobile instrument needs to be acquired, a background debugging function of the automobile instrument needs to be started to debug and modify the automobile instrument. However, the dcon parent process (debug connection parent process) in the vehicle-mounted system does not have a command parsing function and cannot parse data, and therefore cannot be transmitted to the upper computer for debugging through a socket communication method. This requires dismantling and welding the serial communication line, restarting the serial function, and even modifying the internal code of the embedded product. This kind of mode needs to carry out the dismouting to the car inside, and not only the dismouting is troublesome, still can destroy the car structure at the dismouting in-process.
Disclosure of Invention
The invention provides a method for starting a background debugging function of an automobile instrument under the condition of not damaging the internal structure of the automobile instrument, so as to improve the convenience of debugging operation of the automobile instrument.
The invention discloses a method for starting a background debugging function of an automobile instrument, which comprises the following steps:
s1, the dcon father process calls a fork function through the vehicle-mounted system to establish a debugging connection shell sub-process (terminal resolver sub-process) which can capture and resolve the serial port data of the automobile instrument, and simultaneously initializes the socket communication function of the vehicle-mounted system;
s2, a first communication pipeline and a second communication pipeline are established between the dcon parent process and the shell child process to realize bidirectional communication, and the shell child process transfers data to the dcon parent process;
s3, the shell sub-process redirects the standard output, standard input and standard error of the dcon parent process and the shell sub-process through a vehicle-mounted system call dup2 function; enabling the dcon parent process to read the first communication pipeline and write the second communication pipeline, and enabling the shell child process to read the second communication pipeline and write the first communication pipeline;
s4, the dcon parent process is in communication connection with an upper computer through a socket, the dcon parent process calls a pselect function through the vehicle-mounted system to monitor the reading and writing states of the first communication pipeline and the second communication pipeline, if the first communication pipeline is monitored to be readable, the data of the first communication pipeline is read and written to the socket of the vehicle-mounted system, and if the socket is readable, the data of the socket is read and written to the second communication pipeline;
and S5, the socket of the vehicle-mounted system is in communication connection with the socket of the upper computer through TCP/UDP, and the serial port data of the vehicle-mounted system of the dcon parent process is sent to the upper computer through the socket.
According to the method for starting the background debugging function of the automobile instrument, a shell sub-process capable of capturing and analyzing serial port data of the automobile instrument is established in a vehicle-mounted system, and the serial port data can be analyzed; establishing two communication pipelines between the dcon parent process and the shell child process, and redirecting the standard output, the standard input and the standard error of the shell child process so that the shell child process and the dcon parent process can carry out mutual communication transmission of serial port data; the shell sub-process can receive a grabbing data command of the dcon parent process through the second communication pipeline, the first communication pipeline can transmit the grabbing analyzed automobile instrument data to the dcon parent process for packaging, a socket in the automobile instrument system receives the serial port data of the dcon parent process, the socket directly transmits the serial port data to the upper computer through a TCP/UDP communication protocol, the upper computer can communicate with the automobile system through a wireless network and transmit the serial port data for background debugging, the shell sub-process grabs and analyzes the serial port data of the automobile instrument, the analyzed serial port data are transferred to the upper computer through the dcon parent process, a serial port communication line is omitted, the inside of an automobile body is prevented from being disassembled and assembled, and cost is reduced.
Drawings
Fig. 1 is a flow chart of a method for starting a background debugging function of an automobile instrument.
Fig. 2 is a communication connection structure diagram of a method for starting a background debugging function of an automobile instrument.
Detailed Description
As shown in fig. 1, the method for starting the background debugging function of the automobile instrument, provided by the invention, comprises the following steps:
s1, the dcon father process calls a fork function through the vehicle-mounted system to establish a debugging connection shell child process which can capture and analyze serial port data of the automobile instrument, and simultaneously initializes the socket communication function of the vehicle-mounted system;
s2, a first communication pipeline and a second communication pipeline are established between the dcon parent process and the shell child process to realize bidirectional communication, and the shell child process transfers data to the dcon parent process;
s3, the shell sub-process redirects the standard output, standard input and standard error of the dcon parent process and the shell sub-process through a vehicle-mounted system call dup2 function; enabling the dcon parent process to read the first communication pipeline and write the second communication pipeline, and enabling the shell child process to read the second communication pipeline and write the first communication pipeline;
s4, the dcon parent process is in communication connection with an upper computer through a socket, the dcon parent process calls a pselect function through the vehicle-mounted system to monitor the reading and writing states of the first communication pipeline and the second communication pipeline, if the first communication pipeline is monitored to be readable, the data of the first communication pipeline is read and written to the socket of the vehicle-mounted system, and if the socket is readable, the data of the socket is read and written to the second communication pipeline;
and S5, the socket of the vehicle-mounted system is in communication connection with the socket of the upper computer through TCP/UDP, and the serial port data of the vehicle-mounted system of the dcon parent process is sent to the upper computer through the socket.
According to the method for starting the background debugging function of the automobile instrument, a shell sub-process capable of capturing and analyzing serial port data of the automobile instrument is established in a vehicle-mounted system, and the serial port data can be analyzed; establishing two communication pipelines between the dcon parent process and the shell child process, and redirecting the standard output, the standard input and the standard error of the shell child process so that the shell child process and the dcon parent process can carry out mutual communication transmission of serial port data; the shell sub-process can receive a grabbing data command of the dcon parent process through the second communication pipeline, the first communication pipeline can transmit the grabbing analyzed automobile instrument data to the dcon parent process for packaging, a socket in the automobile instrument system receives the serial port data of the dcon parent process, the socket directly transmits the serial port data to the upper computer through a TCP/UDP communication protocol, the upper computer can communicate with the automobile system through a wireless network and transmit the serial port data for background debugging, the shell sub-process grabs and analyzes the serial port data of the automobile instrument, the analyzed serial port data are transferred to the upper computer through the dcon parent process, a serial port communication line is omitted, the inside of an automobile body is prevented from being disassembled and assembled, and cost is reduced. The TCP/UDP communication connection between the upper computer and the vehicle-mounted system is realized through the socket port, so that not only can the interaction of serial port information be carried out, but also the transmission of files can be carried out.
In the method for starting the background debugging function of the automobile instrument, the step S1 further includes: s101, after the key is pressed twice within 10 seconds according to the sequence of the up, down, left, right and OK keys, the vehicle-mounted system starts the dcon parent process. By setting the key sequence function of the vehicle-mounted keys, the vehicle-mounted system can be quickly started, the dcon process is started, the serial port function is started for background debugging, and meanwhile, the background debugging function can be prevented from being started by mistake.
In the method for starting the background debugging function of the automobile instrument, the step S1 further includes: a key module which can trigger the vehicle-mounted system to start a dcon parent process is arranged in the vehicle-mounted system; when the key module is triggered, the vehicle-mounted system starts a dcon father process; and triggering the key module to enable the vehicle-mounted system to start the dcon parent process.
In the method for starting the background debugging function of the automobile instrument, the step S6 further includes the following steps: s601, after a dcon parent process of the vehicle-mounted operating system is started, popping up a message box on an instrument display screen to display an IP address of the dcon parent process; s602, a streaming socket and a datagram socket are built in the dcon parent process, connection preparation information is broadcasted to the network port 4320 through the datagram socket, and the upper computer process selects to build TCP connection with the upper computer process after receiving the broadcast connection preparation information of the vehicle-mounted system through the monitoring network port 4320. In the same local area network, after the network communication between the upper computer and the vehicle-mounted operating system is connected once through the TCP, the connection can be automatically established in the next connection, and the connection establishing time is saved.
Claims (4)
1. A method for starting a background debugging function of an automobile instrument is characterized by comprising the following steps:
s1, the dcon father process calls a fork function through the vehicle-mounted system to establish a debugging connection shell child process which can capture and analyze serial port data of the automobile instrument, and simultaneously initializes the socket communication function of the vehicle-mounted system;
s2, a first communication pipeline and a second communication pipeline are established between the dcon parent process and the shell child process to realize bidirectional communication, and the shell child process transfers data to the dcon parent process;
s3, the shell sub-process redirects the standard output, standard input and standard error of the dcon parent process and the shell sub-process through a vehicle-mounted system call dup2 function; enabling the dcon parent process to read the first communication pipeline and write the second communication pipeline, and enabling the shell child process to read the second communication pipeline and write the first communication pipeline;
s4, the dcon parent process is in communication connection with an upper computer through a socket, the dcon parent process calls a pselect function through the vehicle-mounted system to monitor the reading and writing states of the first communication pipeline and the second communication pipeline, if the first communication pipeline is monitored to be readable, the data of the first communication pipeline is read and written to the socket of the vehicle-mounted system, and if the socket is readable, the data of the socket is read and written to the second communication pipeline;
and S5, the socket of the vehicle-mounted system is in communication connection with the socket of the upper computer through TCP/UDP, and the serial port data of the vehicle-mounted system of the dcon parent process is sent to the upper computer through the socket.
2. The method for starting the background debugging function of the automobile instrument as claimed in claim 1, wherein the step S1 further comprises:
s101, after the key is pressed twice within 10 seconds according to the sequence of the up, down, left, right and OK keys, the vehicle-mounted system starts the dcon parent process.
3. The method for starting the background debugging function of the automobile instrument as claimed in claim 1, wherein the step S1 further comprises:
a key module which can trigger the vehicle-mounted system to start a dcon parent process is arranged in the vehicle-mounted system; when the key module is triggered, the vehicle-mounted system starts a dcon parent process.
4. The method for starting the background debugging function of the automobile instrument as claimed in claim 1, wherein the step S6 further comprises the steps of:
s601, after a dcon parent process of the vehicle-mounted operating system is started, popping up a message box on an instrument display screen to display an IP address of the dcon parent process;
s602, a streaming socket and a datagram socket are built in the dcon parent process, connection preparation information is broadcasted to the network port 4320 through the datagram socket, and the upper computer process selects to build TCP connection with the upper computer process after receiving the broadcast connection preparation information of the vehicle-mounted system through the monitoring network port 4320.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010255650.6A CN111399949A (en) | 2020-04-02 | 2020-04-02 | Method for starting background debugging function of automobile instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010255650.6A CN111399949A (en) | 2020-04-02 | 2020-04-02 | Method for starting background debugging function of automobile instrument |
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| CN111399949A true CN111399949A (en) | 2020-07-10 |
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| CN202010255650.6A Pending CN111399949A (en) | 2020-04-02 | 2020-04-02 | Method for starting background debugging function of automobile instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112162919A (en) * | 2020-09-11 | 2021-01-01 | 上海擎感智能科技有限公司 | Debugging method and system for vehicle-mounted equipment and computer readable storage medium |
| CN115469943A (en) * | 2022-09-22 | 2022-12-13 | 安芯网盾(北京)科技有限公司 | Detection method and device for JAVA virtual terminal command execution |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101420312A (en) * | 2007-10-22 | 2009-04-29 | 株洲南车时代电气股份有限公司 | Debugging method and system for vehicle mounted apparatus |
| CN103577209A (en) * | 2012-08-06 | 2014-02-12 | 浙江大华技术股份有限公司 | Embedded equipment-based application program remote on-line debugging method and device |
| CN106445762A (en) * | 2016-08-29 | 2017-02-22 | 广州视源电子科技股份有限公司 | Complete equipment debugging method and system |
| CN106528199A (en) * | 2016-09-29 | 2017-03-22 | 未来汽车科技（深圳）有限公司 | Method and terminal for updating automobile instrument panel system |
| CN107908576A (en) * | 2017-12-08 | 2018-04-13 | 上海市共进通信技术有限公司 | The method for realizing re-direction applications program standard output control |
| CN109740342A (en) * | 2018-12-20 | 2019-05-10 | 深圳市网心科技有限公司 | Obtain method, system, computer installation and storage medium that shell executes permission |
-
2020
- 2020-04-02 CN CN202010255650.6A patent/CN111399949A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101420312A (en) * | 2007-10-22 | 2009-04-29 | 株洲南车时代电气股份有限公司 | Debugging method and system for vehicle mounted apparatus |
| CN103577209A (en) * | 2012-08-06 | 2014-02-12 | 浙江大华技术股份有限公司 | Embedded equipment-based application program remote on-line debugging method and device |
| CN106445762A (en) * | 2016-08-29 | 2017-02-22 | 广州视源电子科技股份有限公司 | Complete equipment debugging method and system |
| CN106528199A (en) * | 2016-09-29 | 2017-03-22 | 未来汽车科技（深圳）有限公司 | Method and terminal for updating automobile instrument panel system |
| CN107908576A (en) * | 2017-12-08 | 2018-04-13 | 上海市共进通信技术有限公司 | The method for realizing re-direction applications program standard output control |
| CN109740342A (en) * | 2018-12-20 | 2019-05-10 | 深圳市网心科技有限公司 | Obtain method, system, computer installation and storage medium that shell executes permission |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112162919A (en) * | 2020-09-11 | 2021-01-01 | 上海擎感智能科技有限公司 | Debugging method and system for vehicle-mounted equipment and computer readable storage medium |
| CN112162919B (en) * | 2020-09-11 | 2024-03-12 | 上海擎感智能科技有限公司 | Debugging method and system of vehicle-mounted equipment and computer readable storage medium |
| CN115469943A (en) * | 2022-09-22 | 2022-12-13 | 安芯网盾(北京)科技有限公司 | Detection method and device for JAVA virtual terminal command execution |
| CN115469943B (en) * | 2022-09-22 | 2023-05-16 | 安芯网盾(北京)科技有限公司 | Detection method and device for command execution of JAVA virtual terminal |
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Application publication date: 20200710 |
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