CN106227688A - A kind of compatible multimodal target machine software maintenance communication means - Google Patents

Abstract

The invention belongs to embedded software development and design technology, in particular to a multi-mode compatible target machine software maintenance communication method. The present invention is compatible with the multi-mode target machine software maintenance communication method. On the target machine, a unified call interface for software update, debugging and other maintenance services is formulated. After receiving data, after receiving data from any interface, it will continue to receive data from this interface until a complete packet of data is formed, and then analyze the host computer call service information in the data packet based on the communication protocol under this interface, and call the target machine. The corresponding maintenance service, after obtaining the response data of the maintenance service, returns the response data through the communication interface, and completes a maintenance service request from the upper computer, and then the target computer continues to query circularly among the communication interfaces, and repeats the above process to realize the maintenance of each Maintenance service support for the interface.

Description

A Compatible Multi-mode Target Machine Software Maintenance Communication Method

technical field

The invention belongs to embedded software development and design technology, in particular to a multi-mode compatible target machine software maintenance communication method.

Background technique

For an embedded system composed of multiple target machines with different architectures, each target machine has different software update and debugging connection requirements in different development stages of the system, and there are different communication methods between the host machine and the target machine under each requirement , such as communicating through serial port or Ethernet cable in the single board development stage, communicating through the system bus in the system maintenance stage, etc. In the traditional development process, the target machine only supports one fixed communication mode regardless of the demand mode, and a fixed communication method is not suitable for the software update and debugging requirements of the target machine in different development stages of the system. This target machine communication The singleness of the mode leads to complex software update and debugging process in the system development stage, low efficiency and increased system development cost.

Contents of the invention

The purpose of the present invention is to introduce a compatible multi-mode target machine software maintenance communication method.

The technical solution adopted by the present invention is: on the target machine, formulate unified calling interfaces for maintenance services such as software update and debugging, and when the target machine is in the software maintenance state, the target machine circularly inquires whether the Data, when the target computer receives data from any interface, it will continue to receive data from this interface until a complete packet of data under the communication interface is formed. The target computer obtains the service information of the host computer based on the analysis of the communication protocol under the interface and calls The corresponding maintenance service, after obtaining the response data of the maintenance service, returns the response data through the communication interface, and completes a maintenance service request from the upper computer, and then the target computer continues to circularly inquire among the communication interfaces to realize the maintenance service for each interface Support, so as to meet the maintenance communication requirements of different modes. The specific operation steps are as follows:

Step 1 On the target machine side, formulate a unified call interface for various maintenance service requirements such as software update and debugging. The call interface of the same type of service is exactly the same when accessed by different communication interfaces;

Step 2. The target computer starts and runs in the maintenance state. The target computer takes turns to query the supported bus communication interfaces. After receiving data from any bus communication interface, the target computer analyzes the received data based on the communication protocol of the communication interface and continues Receive data until a complete data packet specified by the communication protocol under the communication interface is obtained;

Step 3: According to the communication protocol of the above-mentioned communication interface, the target machine analyzes and obtains the host computer calling maintenance service information contained in the data packet, and calls the corresponding maintenance service;

Step 4: The target computer executes the maintenance service, returns the response data, and returns the response data to the host computer through the communication interface that receives the data, and completes a maintenance service request of the host computer;

Step 5 The target machine continues to query among the supported bus communication interfaces, repeating the process from step 2 to step 4.

The present invention has the advantages and beneficial effects: the present invention is a multi-mode compatible target machine software maintenance communication method, through the uniform interface definition of the maintenance service on the target machine, and the polling query of each communication interface supported by the target machine, it supports The maintenance and communication requirements of the embedded system at different development stages can be updated and debugged through the serial port or Ethernet during the single board development stage, and can be updated and debugged through the system bus during the system integration stage, without the need to disconnect the single board from the system The separate connection of communication lines and power supply is taken out of the middle, which facilitates the maintenance process of the system at each development stage, strengthens the maintainability of the system, and improves the efficiency of embedded software development and maintenance.

Description of drawings

FIG. 1 is an overall flowchart of a multi-mode compatible target machine software maintenance method.

detailed description

Taking the target machine software maintenance in single board or system mode as an example, a multi-mode compatible target machine software maintenance method is introduced below. The overall flow chart of the method is shown in Figure 1, and the specific steps are as follows:

Step 1 On the target machine side, a unified call interface is formulated for various maintenance service requirements such as software update and debugging on the target machine, such as a unified service call interface for target machine Flash access, register reading, and memory access. The call service interface is exactly the same when accessed through different communication interfaces of the target machine.

Step 2. According to the maintenance requirements, the target machine is in the single-board mode for individual maintenance or in the system mode for maintenance based on the entire system. After the target machine is started and running in the maintenance state, the target machine will take turns querying the supported bus communication interfaces. When communicating from any bus After the interface receives the data, the target computer analyzes the received data based on the communication protocol of the communication interface and continues to receive the data until a complete data packet is obtained according to the communication protocol of the communication interface.

Step 3 The target machine parses the obtained data packet according to the communication protocol of the communication interface receiving the data packet, analyzes the maintenance service information that the host computer requests to call in the data packet, and the target machine calls the corresponding maintenance service, such as the host computer requests to download Flash data, the target computer calls the Flash to access the service interface, and passes the parameters requested by the host computer to the service interface.

Step 4 The target machine executes the maintenance service of the above call, and returns the response data. For example, the above-mentioned Flash access service will return the response data of whether the download of the Flash data is successful, and the target machine returns the response data to the host computer through the communication interface that receives the host computer data. Complete a maintenance service request of the upper computer;

Step 5 The target computer continues to query among the supported bus communication interfaces, repeating the process from step 2 to step 4. Realize the support for various bus interface maintenance services, so as to meet the maintenance communication requirements of different modes, thereby meeting various maintenance requirements in the single board maintenance mode and system maintenance mode.

Claims (2)

1. a compatibility multimodal target machine software maintenance communication means, it is characterised in that formulate unification on target machine The calling interface of service is safeguarded in software upgrading, debugging etc., and when target machine is under software maintenance state, target machine is supported at it Between each communication interface, whether cyclic query receives data, when target machine is after any interface to data, continuation is connect from this Mouth receives data, until forming bag data complete under this communication interface, target machine is based on Protocol Analysis under this interface Obtain host computer call information on services and call the maintenance service of correspondence, after being maintained the response data of service, by this Communication interface returns response data, completes the full maintenance service request of host computer, and then target machine continues in each communication interface Between cyclic query, it is achieved the maintenance service support to each interface.

Compatibility the most according to claim 1 multimodal target machine software maintenance communication means, it is characterised in that specifically walk Rapid as follows:

To software upgrading, debugging etc. are all kinds of, step 1, at target machine end, safeguards that demand for services formulates unified calling interface, same The class service calling interface when different communication interface accessing is identical；

Step 2 target machine starts and operates in maintenance state, target machine cyclic query in turn support bus communication interface, when from After any one bus communication interface receives data, the number that target machine Protocol Analysis based on this communication interface receives According to and continue to data, until obtaining the complete packet that communication protocol is specified under this communication interface；

Step 3 target machine resolves, according to the communication protocol of above-mentioned communication interface, the host computer comprised in acquisition packet and calls maintenance Information on services, calls the maintenance service of correspondence；

Step 4 target machine performs to safeguard service, returns response data, response data is returned by the communication interface receiving data Back to host computer, complete the full maintenance service request of host computer；

Step 5 target machine continues cyclic query between the bus communication interface supported, repeats the step 2 process to step 4.