KR20030000794A - In circuit emulator based on the web, development system and method based on the web of target embedded system using it - Google Patents

Abstract

PURPOSE: A web based in-circuit emulator, and a system and a method for the web base development of a target embedded system by using the same are provided to offer a development environment of the target embedded system through an embedded web page by connecting with the in-circuit emulator embedded through an interface between a web server to a host system supporting a web browser and the target embedded system. CONSTITUTION: The system comprises a host system(1) supporting the web browser, the web based in-circuit emulator(2) embedding with the web server, and a target embedded system. The web based emulator(2) comprises a host interface(21), a web server embedded emulator(22), and a target interface(23). The host interface(21) interfaces the host system(1) and the web based in-circuit emulator(2) with each other by providing the diverse communication paths. The web server embedded emulator(22) comprises a CPU(221) performing a web server function and an in-circuit emulator function at the same time, and a memory(222) storing a relating program or bios and an execution file. The web page for providing the development environment of the target embedded system(3) is stored in the memory.

Description

In-circuit emulator based on the web, development system and method based on the web of target embedded system using it}

The present invention provides a web-based in-circuit emulator that provides a development environment of a target embedded system on a web page embedded in a web-based in-circuit emulator connected through a web browser of the host system, regardless of the type of the host system or the type of operating system, It relates to a web-based development system and method of the target embedded system using the same.

In general, an embedded system is not used as a computer that provides various functions of general purpose, but is a system that is interoperated with control equipment or mechanical devices such as homes, buildings, and factories. It is a special-purpose system that is included and performs only the tasks that are formalized to the unique functions of the control equipment or mechanical device. It includes the diversification and intelligence of functions, the support of various interfaces, and the graphical user interface. , "GUI") to support the visual expression to meet the needs of users as well as industrial.

In order to perform the development of such an embedded system, the target embedded system is connected to the host system and the target embedded system is generated by compiling, assembling and linking the executable file for development of the target embedded system in the host system. Will be sent to.

In this case, most embedded system development tools develop and use a dedicated browser to provide a GUI environment.

In addition, in order to perform the development of the target embedded system through such a dedicated browser, a program for connecting an in-circuit emulator between the host system and the target embedded system or communicating with the host system on the memory of the target embedded system is provided. Should be built in.

However, most of the above dedicated GUI tools for embedded system development only support specific in-circuit emulators. Also, if the operating system of the host system changes, you need to purchase the GUI tool for the new operating system and install it on the host system. However, each new GUI tool requires a different environment and requires a lot of time and effort to get used to.

On the other hand, in most host systems, regardless of the type or operating system, it is possible to access various forms of data written in web standard languages such as HTML, XML, CGI, and Perl anywhere in the world by connecting to the Internet. It is equipped with a web browser.

The present invention has been made to solve the problems caused by the conventional embedded system development tools to use a dedicated browser to provide a GUI environment, the in-circuit emulator embedded with a web server to support the web browser A web-based in-circuit emulator which accesses a host system and a target embedded system through an interface, accesses a web-based in-circuit emulator from the host system with a web browser, and provides a development environment of the target embedded system through an embedded web page; An object of the present invention is to provide a web-based development system and method for a target embedded system using the same.

1 is a block diagram showing the overall configuration of a web-based development system of the target embedded system according to an embodiment of the present invention,

2 illustrates a software structure of a web server application embedded in a web-based in-circuit emulator according to the present invention.

FIG. 3 illustrates an overall operation of a web-based development system of the target embedded system of FIG. 1.

FIG. 4 illustrates a modified embodiment of a web-based development system of the target embedded system of FIG. 1.

<Explanation of symbols for the main parts of the drawings>

1: host system 11: web browser

2: web-based in-circuit emulator 21: host interface

22: web server built-in emulator 221: CPU

222, 32: memory 3: target embedded system

31: Target Processor 311: TAP Controller

312: CPU Core

313: In-Circuit Emulator Breaker

In the web-based in-circuit emulator of the present invention for achieving the above object, in the in-circuit emulator having a host system for the development of the target embedded system and the interface with the target embedded system to provide a development environment of the target embedded system, The in-circuit emulator has a built-in web server and is configured to access the web page of the web server with a web browser provided by the host system, thereby developing the target embedded system on the web page.

Preferably, the in-circuit emulator embedded with the web server may be configured to execute an operating system for providing a web-based development environment of the target embedded system and to convert protocols for communication between the host system and the target embedded system. And a memory for storing a CPU to be executed and a program for executing the CPU and the like.

In addition, the web-based in-circuit emulation method of the present invention for achieving the above object, an in-circuit emulator having a host system for the development of the target embedded system and the interface with the target embedded system to provide a development environment of the target embedded system And a web server embedded therein, and accessing a web page of the web server with a web browser provided by the host system, thereby developing the target embedded system on the web page.

In addition, the web-based development system of the target embedded system of the present invention for achieving the above object, a host system that supports a web browser for generating a file for the development of the target embedded system; And a web-based in-circuit emulator having a web server for providing a development environment of the target embedded system by transmitting a file generated by the host system to the target embedded system. Wherein the web-based in-circuit emulator is connected to the host system and the target embedded system at each interface, and accesses the web page of the web-based in-circuit emulator from the host system to the web browser, thereby providing on the web page. And a file generated in the host system to the target embedded system.

Preferably, the transmission to the target embedded system such as a file generated in the host system, the web interface of the web-based in-circuit emulator reads the file through a host interface, and after converting the protocol to the target interface It may be configured to transmit to the target embedded system through.

Preferably, the host interface connecting the host system and the web-based in-circuit emulator may be any one of a USB interface, a serial interface, an Ethernet interface, and a wireless LAN interface.

Preferably, the target interface connecting the web-based in-circuit emulator and the target embedded system may be a JTAG interface.

In addition, the web-based development method of the target embedded system of the present invention for achieving the above object, in the host system that supports a web browser for generating a file for the development of the target embedded system, the target embedded system as the web browser And a web server for providing a development environment of the web server to access a web page of an embedded web-based in-circuit emulator, and transmit a file generated in the host system to the target embedded system on the web page.

Preferably, the transmission to the target embedded system such as a file generated by the host system, the web interface of the web-based in-circuit emulator, the file is read through the host interface through a host interface conversion and then the target interface It may be configured to transmit to the target embedded system through.

The above and other features, advantages, and aspects of the present invention will be apparent from the preferred embodiments of the web-based in-circuit emulator, web-based development system and method of the target embedded system using the same described below with reference to the drawings. You will know.

1 is a block diagram showing the overall configuration of a web-based development system of the target embedded system according to an embodiment of the present invention. The overall web-based development system is connected to a host system 1 with a web browser, a web-based in-circuit emulator 2 with a web server, and a target embedded system 3 via interfaces.

First, as the host system 1, a personal computer is usually used, and a personal portable terminal such as a PDA with guaranteed mobility can also be used. The host system 1 is supported by a web browser 11 and develops the target embedded system 3 while operating software related to file system management, editor, assembly, cross compiler, debugging, etc., and displays relevant information to the user. It is responsible for the interface between the web-based in-circuit emulator (2) and the user.

The web-based emulator 2 is composed of a host interface 21, a web server built-in emulator 22 composed of a CPU 221 and a memory 222, and a target interface 23. The target embedded system 3 To develop effectively).

The host interface 21 interfaces the host system 1 and the web-based in-circuit emulator 2 with each other to provide various communication paths as connection means for communication with the host system 1, and communication between them It is performed via serial port, parallel port, Wireless LAN, Ethernet, etc.

The web server built-in emulator 22 includes a CPU 221 which simultaneously performs a web server function and an in-circuit emulator function, and a memory 222 that stores related programs, bios, and executable files.

The web server application may be stored and executed in the memory 222. The web server application may be divided into a flash memory capable of storing the BIOS and the web server application software and a system memory executable by the web server application software.

Here, a web page created to provide a development environment of the target embedded system 3 is embedded in the memory 222.

2 illustrates a software structure of a web server application embedded in the memory 222.

The hardware platform refers to the CPU 221, which is an embedded processor that provides various I / O ports and includes various communication modules such as Ethernet, HDLC, and UART used in the web-based in-circuit emulator 2.

The device driver is software for interfacing with an operating system that will be stored in the memory 222 on the hardware platform of the web-based in-circuit emulator 2 to operate the hardware platform. The device driver for communication, such as Ethernet, HDLC, UART, and the like, Examples include ROM, RAM, and flash file systems.

The layers directly above the device driver are the protocol layers provided by the operating system and provide an application program interface (API) between the web-based application protocols and the parent debug application to facilitate web-based debug application development. Can be.

The target interface 23 interfaces the target embedded system 3 and the web-based in-circuit emulator 2 with each other so as to provide a communication path as a connection means for communication with the target embedded system 3, and communication therebetween. Is done through the JTAG port.

The target embedded system 3 includes an in-circuit emulator breaker 313 in which the target processor 31 is a set of registers and comparators that are mostly used to generate debug exceptions such as the CPU core 312 and breakpoints. JAP (Joint Test Access Group), a standard interface, is provided through the TAP (Test Access Port) controller 311, so that the target interface 23 of the web-based in-circuit emulator 2 is embedded in JTAG. It consists of interface logic that can be connected to the system (3).

In addition, the power source for the web-based in-circuit emulator 2 may be supplied from the target embedded system 3 through the target interface 23, or may be provided with a separate independent power source.

3 is a flowchart illustrating the overall operation of a web-based development system of a target embedded system according to an exemplary embodiment of the present invention.

In the transfer process such as a file for development of the target embedded system 3 from the host system 1 according to the embodiment of the present invention, the IP address of the web-based in-circuit emulator 2 defaults to the virtual private network IP address. The assumption is that it is set to 192.168.1.1.

First, in order to configure the web-based development system of the target embedded system of the present invention, the web-based in-circuit emulator 2 is connected through the target embedded system 3 and the JTAG port which is the target interface 23, and the host system ( 1) is connected to any one of the host interface 21, a serial port, a parallel port, a wireless LAN, and an Ethernet.

If the host interface 21 of the web-based in-circuit emulator 2 supports the wireless LAN interface, the host system 1 should also be equipped with a wireless LAN card, in which case the web-based in-circuit emulator 2 The host system 1 is connected wirelessly and is connected to the target embedded system 3 via the JTAG port, which is the target interface 23 of the web-based in-circuit emulator 2.

Next, the host system 1 executes a web browser 11 using HTTP, which is a communication protocol used for exchanging hypertext documents on the Internet, and executes a web with an IP address on the web browser 11. The web page of the in-circuit emulator 2 is accessed (S31).

That is, when the web browser 11 is opened in the host system 1 and the IP address "192.168.1.1" of the web-based in-circuit emulator 2 is input on the web browser 11, the web-based in-circuit emulator ( You will be able to access the web page embedded in 2).

The development of the target embedded system 3 is performed on the web page through the web browser 11 of the host system 1.

When accessing the web-based in-circuit emulator 2 via a web page, the web page of the web-based in-circuit emulator 2 is displayed on the web browser 11 of the host system 1, and the web page is web-based. Menu items for changing the system parameters, such as the IP address and default gateway of the in-circuit emulator 2, are provided.

If you need to set or change the system information in order to connect different computer systems to each other and transmit data, it is typically the TCP / IP setting used in the standard Internet that transmits data on the network. Tap the Change Information menu icon to enter the IP address and subnet mask to enable the internal network, and set the Default Gate Way route if you want to connect or communicate with the external network.

The system information that has been set or changed is stored in the flash memory of the web-based in-circuit emulator 2 and does not change unless changed again.

When the system setting is completed by setting or changing the IP address or system parameter of the web-based in-circuit emulator 2, an executable file for the development of the target embedded system 3 is cross-linked in the host system 1 on the web page. Generated by the compiler, it is received on the web page of the web-based in-circuit emulator 2 connected through the host interface 21 and stored in the memory 222. (S32)

The file or the like sent to the memory 222 on the web page embedded in the web-based in-circuit emulator 2 is processed in accordance with the protocol determined by the CPU 221 of the web-based in-circuit emulator 2 to make the web-based in-circuit. It is transmitted to the target embedded system 3 through the JTAG port, which is the target interface 23 of the emulator 2, and stored in the memory 32 (S33).

Execution results of the recorded file and the like can also be viewed on a web page embedded in the web-based in-circuit emulator 2.

In addition, when upgrading the web-based in-circuit emulator 2 itself, as described above, executable files or the like generated on the host system 1 are stored in the memory 222 of the web-based in-circuit emulator 2. You can upgrade by recording immediately.

In addition, it is possible to provide a variety of menus for the development of the target embedded system 3 on the web page, assembling, compiling, linking, executing, and debugging on a high level web server protocol (HTTP) of the TCP / IP network protocol. By providing a web browser, you can implement an integrated development environment through a web browser.

As shown in FIG. 4, the host system constituting the development system of the target embedded system according to the embodiment of the present invention uses the host system 1 as a modification of the web-based development system of the target embedded system of FIG. 1. The figure shows a number of installed states via a network. On the homepage embedded in the web-based in-circuit emulator 2, an executable file generated by another host system 1 on a wired or wireless network is used. The data may be read into the memory 222 on the web-based in-circuit emulator 2 and converted into a protocol and then written back into the memory 32 of the target embedded system 3 through the target interface 23.

While the invention has been described above based on the preferred embodiments, it is merely illustrative and is not intended to limit the invention. It will be apparent to those skilled in the art that the present invention can be changed, changed or adjusted from the above-described embodiments without departing from the technical spirit of the present invention. The appended claims are intended to cover such modifications, alterations, or modifications within the scope of the invention.

According to the web-based in-circuit emulator of the present invention and the web-based development system of the target embedded system using the same, and a method thereof, a web server is embedded in the in-circuit emulator to develop a development environment of the target embedded system in a web standard language. This allows you to develop a target embedded system in a web browser regardless of the host system or operating system, as well as simplify the upgrade process such as improving the performance of software embedded in the in-circuit emulator or adding new functions. Continuously improved debugging features can be provided without changing the hardware, and users can download and upgrade new code through the network.

Therefore, by providing the assembly, compilation, link, execution and debugging functions for the development of the target embedded system on the web, it is possible to implement an integrated development environment through a web browser.

Claims (12)

In the in-circuit emulator having a host system for the development of a target embedded system and an interface with the target embedded system to provide a development environment of the target embedded system, The in-circuit emulator has a built-in web server, And developing the target embedded system on the web page by accessing a web page of the web server with a web browser provided by the host system. The method of claim 1, The in-circuit emulator embedded with the web server, A CPU that executes an operating system for providing a web-based development environment of the target embedded system, and converts a protocol for communication between the host system and the target embedded system; And a memory for storing a program or the like relating to the execution of the CPU. A web server is embedded in an in-circuit emulator that has a host system for developing a target embedded system and an interface with the target embedded system to provide a development environment of the target embedded system. And developing the target embedded system on the web page by accessing a web page of the web server with a web browser provided by the host system. A host system supporting a web browser for generating a file for development of a target embedded system; And, A web-based in-circuit emulator having a web server for providing a development environment of the target embedded system by transmitting a file generated in the host system to the target embedded system; Including, The web-based in-circuit emulator is connected to the host system and the target embedded system at each interface, Web-based of the target embedded system, characterized in that to access the web page of the web-based in-circuit emulator from the host system to a web browser, the file generated in the host system on the web page to the target embedded system Development system. The method of claim 4, wherein The transmission to a target embedded system, such as a file generated by the host system, reads the file through a host interface on a web page of the web-based in-circuit emulator, converts the protocol, and then converts the target embedded through the target interface. Web-based development system of the target embedded system, characterized in that the transmission to the system. The method according to claim 4 or 5, And a host interface connecting the host system and the web-based in-circuit emulator is a USB interface. The method according to claim 4 or 5, And a host interface connecting the host system and the web-based in-circuit emulator is a serial interface. The method according to claim 4 or 5, And a host interface connecting the host system and the web-based in-circuit emulator is an Ethernet interface. The method according to claim 4 or 5, And a host interface connecting the host system and the web-based in-circuit emulator is a wireless LAN interface. The method according to claim 4 or 5, The target interface for connecting the web-based in-circuit emulator and the target embedded system is a JTAG interface, Web-based development system of the target embedded system. In a host system that supports a web browser for generating files for development of a target embedded system, the web browser accesses a web page of a web-based in-circuit emulator with a web server that provides a development environment of the target embedded system. And transmitting a file generated in the host system on the web page to the target embedded system. The method of claim 11, The transmission to a target embedded system, such as a file generated by the host system, reads the file through a host interface on a web page of the web-based in-circuit emulator, converts the protocol, and then converts the target embedded through the target interface. Web-based development method of the target embedded system, characterized in that the transmission to the system.