CN112363743A - User program updating method based on internet access transmission - Google Patents
User program updating method based on internet access transmission Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 32
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- 230000003993 interaction Effects 0.000 claims 1
- 230000004044 response Effects 0.000 description 16
- 230000006872 improvement Effects 0.000 description 4
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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
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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
- G06F9/4401—Bootstrapping
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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
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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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
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
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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
- H04L67/34—Network arrangements or protocols for supporting network services or applications involving the movement of software or configuration parameters
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Abstract
The invention relates to a user program updating method based on internet access transmission, which comprises the steps that a processor establishes an ARP protocol with an upper computer according to the ARP message protocol, and the processor realizes network data transmission with the upper computer according to a UDP message protocol. When the processor updates the user program for the first time, the bootloader program needs to be loaded into a starting area appointed by the flash through the simulator, then the bootloader program is operated firstly after the processor is powered on again, a user program updating signal is detected through the processor within a specified time, if the updating signal is detected, image file data of the user program to be updated stored in the computer is transmitted to the processor through the network port for updating, and after the updating is finished, the processor is powered on again. If the processor does not detect an update signal, the bootloader program boots up the original user program to run. The method is simple to operate and high in universality, and when the user program is updated and has an error, the user program can be updated again by powering on the processor again.
Description
Technical Field
The invention relates to a program updating method, in particular to a user program updating method based on internet access transmission, and belongs to the technical field of embedded network communication.
Background
With the development of embedded software technology and network communication technology, most processors have network communication functions. After the device where the processor is located is loaded into the system device, if the functional requirements of the user change at any time, the user program is updated through the simulator of the device, so that the complex and time-consuming disassembly and assembly work is required, the workload of workers is increased, and the hardware environment for debugging the system device is damaged. As the code amount of the user program is increased along with the diversification of the function implementation of the electronic product, the efficient and convenient user program updating method becomes a research trend.
Disclosure of Invention
The invention provides a user program updating method based on internet access transmission aiming at the problems in the prior art, the scheme reduces the time for updating the user program and avoids the complex disassembly work of the equipment where the processor is positioned, the user program is updated efficiently and conveniently, and the workload of software developers and testers can be greatly reduced.
In order to achieve the above object, a technical solution of the present invention is a method for updating a user program based on internet access transmission, the method comprising the steps of:
and (1) converting an executable file finally generated by a processor user program into a file format which can be identified by a bootloader program through a corresponding tool or IDE (integrated development environment) provided by a manufacturer corresponding to the processor, and writing a file conversion tool according to a self-defined protocol to convert the file which can be identified by the bootloader program into a data file which can be transmitted by an upper computer through a network.
And (2) when the processor is used for the first time, the image file data of the bootloader program needs to be burnt into the flash starting area space of the processor through the IDE and the downloader which are provided by the manufacturer corresponding to the processor.
And (3) connecting the processor with a computer in which the upper computer is positioned through a network cable, wherein the MAC address of the processor and the last byte of the IP address of the processor in the source program of the upper computer are determined through negotiation among programmers and are fixed and unchangeable. And opening the upper computer, inputting the IP value of the processor in the upper computer (the last byte is fixed and can not be input), and after the IP address is input, if a 'connection' button is clicked on an interface of the upper computer, starting broadcasting an ARP request packet containing the MAC address value and the IP address value of the processor and the MAC address value and the IP address value of a computer where the upper computer is located by the upper computer.
And (4) powering on the equipment, running a bootloader program by the processor to finish the basic initialization of the running of the processor, and detecting a signal for updating the application program by the processor in specified time. If a signal is detected to update the application, the bootloader program begins initialization and configuration related to the processor portal.
And (5) establishing an ARP protocol between the upper computer and the processor. The ARP protocol establishment process comprises the following steps: the upper computer actively broadcasts an ARP request packet, the processor analyzes the ARP request packet after receiving the ARP request packet, if the target IP value in the ARP request packet broadcasted by the upper computer is the processor, the processor replies an ARP response packet generated by simulation to the upper computer according to the ARP message format, at the moment, the MAC address and the IP address of the processor establish a dynamic corresponding relation, and the upper computer can send a network data packet to the processor according to the IP address of the processor.
The upper computer sends a UDP data packet to the processor by using the network protocol stack, and the processor generates a UDP data packet according to the simulation of the UDP message protocol and sends the UDP data packet to the upper computer; the upper computer and the processor confirm the network connection condition before data transmission.
And (7) after the network connection condition is confirmed, the upper computer divides the image file of the processor user program into network data packets according to a specified protocol, and each data packet must be keyed in a packet serial number, a check code of the data and data transmission end mark information.
And (8) the upper computer sends the image file of the user program to the processor, the processor judges the data transmission end mark and the packet sequence number and checks the received data, the processor replies to the upper computer according to the judgment result, the upper computer starts to time and wait for the processor to reply a signal packet of the receiving condition after sending the packet of data, and the upper computer sends the next data according to the content of the signal packet of the receiving condition replied by the processor. If the upper computer does not receive the receiving condition signal packet replied by the processor within the specified time, the upper computer defaults that the network data packet just sent is lost and resends the network data packet; if the upper computer still does not receive the signal packet replied by the processor after the retransmission is carried out for three times, the network connection between the upper computer and the processor is disconnected by default, and at the moment, the equipment needs to be powered on again to update the user program.
And (9) temporarily placing the received data on the DDR by the processor, burning the received user program image file data into a flash of the processor after the data are received, and feeding back the progress of data erasing and the progress of data burning to the upper computer by the processor through a network.
And (10) after the processor finishes updating the user program image file, the processor is powered on again, and if a user program updating signal is not detected within a specified time, the updated user program is operated.
As an improvement of the present invention, in the step (5), the method of analyzing the ARP request packet and constructing the ARP reply packet may dynamically set the IP address value of the processor on the upper computer. Thus, the updating of the processor application program can be completed in different network segments or between different computers.
As an improvement of the invention, the processor in the step (5) and the step (6) sends the packet to the upper computer according to the ARP protocol and the UDP protocol, so that the use of a network protocol stack can be avoided, and the requirement on processor resources is reduced.
As an improvement of the present invention, the upper computer in step (8) determines whether the network link is disconnected by receiving the signal packet returned by the processor in a timing manner, so as to achieve the function of network link self-checking.
As an improvement of the invention, the step (9) displays the burning progress of the user program, and the progress can be efficiently interacted with the human-computer.
Compared with the prior art, the invention has the following advantages:
1. the technical scheme provides a user program updating method based on internet access transmission, which realizes the downloading and updating of a user application program through the internet access, effectively solves the problem that a processor designs an additional debugging interface when downloading or updating the user program, and greatly lightens the workload of software developers and testers.
2. The technical scheme provides a user program updating method based on internet access transmission, and the method has great advantages in speed by using common internet access to carry out data transmission, can quickly finish the transmission of a larger user program image file, and greatly shortens the time for updating and downloading the user program.
3. The technical scheme provides a user program updating method based on network port transmission, which has great advantage in distance from the traditional JTAG loading updating method or the serial port loading updating method, and simultaneously supports the dynamic setting of the IP value of the processor, and can complete the updating of the application program of the processor in different network segments or between different computers, so the updating method has strong universality.
Drawings
FIG. 1 is a flow chart of an implementation of updating a user program based on an internet access;
fig. 2 is a flowchart illustrating the operation of updating a user program based on a portal.
The specific implementation mode is as follows:
for the purpose of enhancing an understanding of the present invention, the present embodiment will be described in detail below with reference to the accompanying drawings.
Example 1: referring to fig. 1 and 2, a method for updating a user program based on internet access transmission includes the following steps:
the method comprises the following steps that (1) an executable file finally generated by a processor user program is converted into a file format which can be identified by a bootloader program through a corresponding tool or an IDE (integrated development environment) provided by a manufacturer corresponding to a processor, and a file conversion tool is written according to a self-defined protocol to convert the file which can be identified by the bootloader program into a data file which can be transmitted by an upper computer through a network. And (2) - (4) when the processor is configured for the first time, downloading the image file data of the bootloader program to a starting area in the processor flash through the simulator. After the image file data of the bootloader program is loaded, the processor is connected with a computer through a network cable, an upper computer used for transmitting the image file data of the user program on the computer is opened, an IP address value of the processor of the user program to be updated is set in the upper computer, and a connection button is clicked. And the processor is powered up again, the bootloader program is run by the processor to complete the basic initialization of the running of the processor, and the processor always detects the signal for updating the application program in the specified time. If a signal is detected to update the application, the bootloader program begins initialization and configuration related to the processor portal.
And (5) after the processor completes initialization and configuration related to the network port, the processor judges whether the last byte of the IP address in an ARP request packet broadcasted by the upper computer is own or not, if so, the processor analyzes the MAC address value and the IP address value of the processor and the MAC address value and the IP address value of the computer where the upper computer is located according to an ARP packet protocol, then generates an ARP response packet to the upper computer by utilizing the information analyzed from the ARP request packet and the ARP packet protocol, stores the IP address and the MAC address of the processor in an ARP cache and keeps for a period of time after the computer where the upper computer is located receives the ARP response packet, and then the upper computer can send a UDP data packet.
Step (6) after the ARP protocol is successfully established, the processor and the upper computer can start data transmission, and the upper computer sends a UDP data packet to the processor through a network protocol stack; the processor analyzes the UDP data packet header information sent by the upper computer and then generates a UDP data packet uploaded to the upper computer according to the simulation of the UDP message protocol. Before user program image file data transmission is carried out between an upper computer and a processor, network connection condition judgment needs to be carried out between the processor and the upper computer, and the method comprises the following specific processes: the upper computer sends a ready signal packet to the processor every 3s at regular time, and the upper computer is set to send the ready signal packet for at most 10 times to inquire whether the processor is ready; if the processor is ready, the processor replies a response signal packet (containing the data packet sequence number 0 required by the processor, namely the first packet data) to the upper computer for replying the upper computer to be ready. And if the upper computer receives the response signal packet replied by the processor within the maximum number of times issued by the response signal packet, the upper computer stops sending the response signal packet to the processor, and the processor is ready for receiving data. If the upper computer does not receive the response signal packet replied by the processor after sending the ready signal packet for 10 times, the upper computer stops sending the ready signal packet, obtains that the processor does not prepare for receiving data, pops up a dialog box on an interface, prompts an operator, detects a network link and configuration and renews a user program.
After the network connection is established between the processor and the upper computer, the upper computer starts to split the image file data of the processor user program into data packets with the size of 1KB, and adds a network data packet sequence number, a check code and data transmission end mark information according to a specified protocol to form a UDP network data packet and sends the UDP network data packet to the processor (the size of the image file data of the user program is only 1 KB). The specific process of data transmission of the user program image file comprises the following steps: and the upper computer starts to send the user program image file data packet according to the content of the response signal packet returned by the processor. The processor judges whether the network packet serial number is requested to be issued by the processor after receiving the data packet issued by the upper computer, judges whether the data transmission is finished according to the data transmission finishing mark, and checks the received network data to judge whether the error code occurs in the data. The upper computer starts timing after sending a user program image file data packet, if the upper computer does not receive a response signal packet replied by the processor within the specified 15s, the upper computer regards that the network data packet is lost, the upper computer sends the network data packet which is just sent again, timing is conducted again, the maximum retransmission frequency of the upper computer is set to be 3 times, if the upper computer retransmits 3 times, the network data still does not receive the response signal packet replied by the processor, the upper computer regards that the network connection between the processor and the upper computer is disconnected and pops up a dialog box to prompt an operator, a network link and configuration are detected, and the user program is updated again.
If the processor judges that the packet sequence number is not requested to be issued by the processor, or the processor has errors in the check code of the received data, or the processor judges that the last packet of data is received, or the processor data receiving verification is correct, the processor can restore a response signal packet (the response signal packet contains the current state information of the processor) of the upper computer. The upper computer resends the network data packet according to the current state information of the processor in the response signal packet replied by the processor
And (10) after the last packet of data is received by the processor, the processor starts to burn the received data into the flash of the processor and simultaneously displays the progress of data writing through the upper computer. And if the data writing error occurs, the processor replies a response signal packet to the upper computer, and the upper computer pops up a dialog box to prompt an operator, detects the network link and the configuration and renews the user program. And if the data is successfully written in, the processor replies a response signal packet to the upper computer, the upper computer pops up a dialog box after the update is completed, the upper computer is closed, and the processor can run the updated application program after being electrified again.
It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and all equivalent modifications and substitutions based on the above-mentioned technical solutions are within the scope of the present invention as defined in the claims.
Claims (7)
1. A method for updating a user program based on internet access transmission, the method comprising the steps of:
step (1) an executable image file generated by compiling a user program of a processor is converted into a file format which can be identified by a bootloader program.
Step (2) when the processor is configured for the first time, the image file data for the bootloader program needs to be burned into the flash starting area space of the processor through the simulator and the burning engineering;
step (3) connecting the processor with an upper computer through a network cable, opening the upper computer, inputting an IP value of a user program to be updated of the processor, and starting broadcasting an ARP request packet by the upper computer;
step (4), the equipment is powered on, the processor starts to run the bootloader program, the processor always detects a signal for updating the application program in the specified time, and if a user program updating signal is detected in the specified time, the processor carries out related initialization and configuration of the internet access;
establishing an ARP protocol between the processor and the upper computer;
the upper computer sends a UDP data packet to the equipment by using a network protocol stack, and the processor generates a UDP data packet according to the simulation of a UDP message protocol and sends the UDP data packet to the upper computer; the upper computer and the processor confirm the network connection condition before data transmission.
After the network connection condition is confirmed, the upper computer splits the image file of the processor user program into network data packets according to a specified protocol, and each data packet must be keyed in a packet serial number, a check code of the data and data transmission end mark information; and (8) the upper computer sends the image file of the user program to the processor, the processor judges the data transmission end mark and the packet sequence number and checks the received data, the processor replies to the upper computer according to the judgment result, the upper computer starts to time and wait for the processor to reply a signal packet of the receiving condition after sending the packet of data, and the upper computer sends the next data according to the content of the signal packet of the receiving condition replied by the processor. If the upper computer does not receive the receiving condition signal packet replied by the processor within the specified time, the upper computer defaults that the network data packet just sent is lost and resends the network data packet; if the upper computer still does not receive the signal packet replied by the processor after the retransmission is carried out for three times, the network connection between the upper computer and the processor is disconnected by default, and at the moment, the equipment needs to be powered on again to update the user program.
And (9) temporarily placing the received data in a DDR or other storage space which can meet the data storage size by the processor, after the data are received, burning the received user program image file data into a flash of the processor by the processor, and feeding back the data erasing progress and the data burning progress of the current processor of the upper computer by the processor through a UDP (user Datagram protocol) data packet.
And (10) when the processor finishes updating the user program image file, the processor is powered on again, and if a user program updating signal is not detected within a specified time, the updated user program is automatically guided to run.
2. The user program updating method based on internet access transmission as claimed in claim 1, wherein the step (5)
The network segments of the processors can be configured in the upper computer.
3. The method according to claim 1, wherein an ARP protocol is established between the processor and the upper computer in step (5), and specifically, after the processor performs initialization and configuration related to the internet access, the processor determines whether an ARP request packet broadcast from the upper computer is self-owned, and if so, the processor parses information in the ARP request packet according to the ARP packet protocol, and then generates an ARP reply packet according to the ARP packet protocol to reply to the upper computer, so that the ARP protocol is established between the processor and the upper computer.
4. The updating method of the user program based on the internet access transmission according to claim 1, wherein the processor in the step (6) sends the user program to the upper computer according to the UDP protocol package, so that a network protocol stack can be avoided, and the requirement on processor resources is reduced.
5. The method for updating a user program based on internet access transmission according to claim 1, wherein the upper computer in step (8) determines whether the network link is disconnected by receiving a signal packet returned by the processor in a timed manner, so as to achieve the purpose of self-checking the network link.
6. The updating method of user program based on internet access transmission as claimed in claim 1, wherein the step (9) displays the burning progress of user program, which can effectively perform human-computer interaction.
7. The method for updating a user program based on internet access transmission according to claim 1, wherein the data transmission is performed in a format prescribed by a protocol by an upper computer through any graphical interface development software.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114036080A (en) * | 2021-11-09 | 2022-02-11 | 许昌许继软件技术有限公司 | Method and device for upgrading program by using communication serial port of display terminal |
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