KR0154571B1 - Data downloading method using high speed communication line - Google Patents

Abstract

The present invention relates to a method for downloading data using a high speed communication line between a host system and a target system, and to provide a tool for downloading data between two systems without using commercial communication software. A first step (201, 202, 203) of determining a setting error occurrence after setting the communication line by reading the name of the target system for loading; A second step 204 of outputting an error message if a setting error; And a third step (205 to 208) of downloading a file to the target system by reading a data file to be downloaded if it is not a configuration error. It is applicable to download and has the effect of performing data transfer between the host computer and the embedded system or other computer systems.

Description

Data downloading method using high speed communication line

1 is an example of hardware to which the present invention is applied.

2 is a flowchart of an embodiment of a data downloading method according to the present invention.

3 is a flowchart illustrating an embodiment of a communication line setting process according to the present invention.

4 is a flow diagram of an embodiment of a downloading process according to the present invention.

* Explanation of symbols for main parts of the drawings

101, 111: main memory board 102, 112: central processing board

103: general purpose operating system 104, 109: auxiliary memory

105, 110: I / O devices 106, 108: Ethernet board

107, 114: system bus

113: Real-time parallel processing operating system or general operating system

115: transceiver 116: Ethernet line

The present invention includes a host system and a real-time parallel processing operating system (CROS) equipped with a Spark processor and controlled by a SunOS 4.1.X or a Solaris 2.3 operating system. The present invention relates to a data downloading method for downloading data using a high-speed communication line between a target system under control of the above-mentioned SunOS or Solaris operating system.

Downloading data is pure data to which information for transmission / reception is not added.

In general, data transmission / reception between two systems is handled by sending and receiving data between two systems with commercially available communication software (TCP / IP, X.25) installed on the two systems.

However, the above-mentioned commercial communication software is not installed in the real-time parallel processing operating system (CROS) currently used as the operating system of the exchange.

Accordingly, there is a need for a data downloading method capable of transmitting / receiving data between two systems without using commercial communication software.

Accordingly, an object of the present invention is to provide a data downloading method for downloading data using a high-speed communication line between two systems that do not use commercial communication software.

In order to achieve the above object, the present invention provides a data downloading method applied to a device in which a host system and a target system are connected by a high-speed communication line, wherein the communication apparatus is opened after reading the name of the target system for downloading. A first step of processing a connection address between a host system and the target system; A second step of establishing a communication line by connecting a high speed communication line between the host system and the target system after designating a type of packet for transmission / reception; And reading a data file to be downloaded through the established communication line, transmitting and receiving a check character between the host system and the target system to check the state of the target system, and then downloading the file to the target system. It is characterized by including.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention;

1 is an embodiment of hardware to which the present invention is applied, 101 is a main memory board of a host system, 102 is a central processing board, 103 is a general-purpose operating system, 104 is an auxiliary memory device, 105 is an input / output device, 106 Is the Ethernet board, 107 is the system bus, 108 is the Ethernet board of the target system, 109 is the auxiliary memory, 110 is the input / output device, 111 is the main memory board, 112 is the central processing board, 113 is the real-time controlling the target system. A parallel processing system or a general operating system, 114 denotes a system bus of the target system, 115 denotes a transceiver, and 116 denotes an Ethernet line. 101 through 106 are boards of the host system, 108 through 113 are boards of the target system, and 115 and 116 are devices for communication between the two systems.

Referring to the functions of the blocks shown in the drawing, the main memory board 101 of the host system is a board on which a downloading program is mounted, and the central processing board 102 executes a program mounted on the main memory board 101. It is a board to let. The auxiliary memory device 104 is a device that stores files and data to be downloaded from the host system to the target system, and stores files and tools that are not mounted on the main memory board 101. The input / output device 105 is a device for inputting / outputting files and data necessary for downloading and all error messages generated during the downloading. The universal operating system 103 controls each board and device, and messages exchanged between the boards and devices are transmitted through the system bus 107. The Ethernet board 106 of the host system and the Ethernet board 108 of the target system are boards responsible for transmitting / receiving messages between the two systems.

The auxiliary memory device 109 of the target system is a device that stores files and data used in the target system, and stores files and tools that are not mounted on the main memory board 111. The main memory board 111 of the target system is a board on which downloaded files and data are mounted, and the central processing board 112 is a board for executing a program mounted on the main memory board 111. The input / output device 110 is a device for inputting / outputting files and data necessary for downloading and all error messages generated during the downloading process. The real-time parallel processing operating system or the general operating system 113 controls each board and device of the target system, and messages exchanged between the boards and the devices are transmitted through the system bus 114. The transceiver 115 is a device for transmitting a message transmitted / received in each system to the Ethernet line 116, and the Ethernet line 116 is a high speed communication line shared by several systems.

2 is a flow diagram of an embodiment of downloading data or files from a host system to a destination system in accordance with the present invention.

In general, there are many commercial protocols such as the TCP or UDP protocol, the X.25 protocol defined by the International Telecommunication Union (ITU-T), and the IEEE802.2 protocol. In the present invention, a new independent protocol was constructed and used.

Looking at the specific example, the packet information defined in TCP / IP is added to the header information of 5 or 6 words (20 or 24 bytes) size, in the present invention, all of its own address and destination address and newly defined packet type, etc. The header information is defined as 4 words (16 bytes) and configured to be delivered with the data to be downloaded.

When the user requests a download, the communication system between the target system and the host system is established (202) by first reading the name of the target system to exchange data with the host system (201). In operation 203, it is determined whether an error has occurred in setting a communication line, and if an error occurs, an error message is output and downloading is terminated (204). If the communication line is established without error, the data file to be loaded is read (205) and the data is downloaded to the main memory board 111 of the target system using the established communication line (206). Subsequently, the download error is determined (207). If a download error occurs, a download error message is output and the download is terminated (208). If the download error does not occur, the download is terminated.

3 is a flowchart illustrating a process of establishing a communication line between a host system and a target system according to the present invention.

Opening the Ethernet board 106 for transmitting / receiving data from the host system (301). When the Ethernet device is opened, it is determined whether an error occurs (302). If an error occurs, an error message is output, and the communication line setup is terminated (305). If an error does not occur, the Ethernet sculpture between the host system and the target system is processed ( 303). It is determined whether an error occurs when processing an Ethernet address (304). If an error occurs, an error message is output, and communication line setting is terminated (305). If an error does not occur, a data packet type for transmission / reception is designated. 306). Next, the Ethernet device is connected as a path for communication between the host system and the target system and the communication line setup is terminated (307).

4 is a flowchart illustrating a process of downloading data to a destination system in a host system according to the present invention.

First, the host system sends a 'Wn' character to the target system to check whether the target system is ready to receive data (401). When the target system receives the 'Wn' character (402) it sends a hexadecimal 7F to the host system as a signal indicating that it is ready to receive data and a character indicating the end of the prompt (404,406). When the host system receives the prompt and the hexadecimal 7F (403, 405), it checks whether it is a normal prompt (407). If the prompt is abnormal, a process of transmitting the character 'Wn' up to 10 times is repeated (401) until the target system is in a normal state (408). If the 'Wn' character is sent up to 10 times and an abnormal prompt is received from the target system, an error message is output and the downloading is terminated (427). On the other hand, if the prompt received from the target system is normal, a command for downloading a data file is transmitted to the target system (409). When the target system receives the data file download command (410), it transmits an acknowledgment (ACK) message (hexadecimal 6) to the host system as a signal that it received well (412). When the host system receives an ACK message (411), it checks whether there is a reception error (413), outputs an error message in case of an error, and terminates (427). Transmit to system (414). When the target system receives the downloading start message (415), it sends an ACK message to the host system (417). When the host system receives an ACK message (416), after checking for an error (418), if it is an error, an error message is output and the downloading is terminated (427). If not, the packet data is transmitted to the target system (419). The transmission process is repeated until all the packet data is transmitted (419 to 424). When all of the data files are transmitted, a message (hexadecimal 5) informing the end of the downloading is sent to the target system (425), an ACK message is received from the target system, and the downloading is terminated (426, 429, 428).

As described above, the present invention is applicable to downloading data between systems in which commercial communication programs are not installed or cannot be installed, and use the lowest level of resources for communication provided by the system. The effect is to simplify data transfer to and from an embedded system or other computer system.

Claims (2)

A data downloading method applied to a device in which a host system and a target system are connected by a high-speed communication line, the method comprising: reading a name of the target system for downloading and opening a communication device to obtain a connection address between the host system and the target system. A first step of processing; A second step of establishing a communication line by connecting a high-speed communication line between the host system and the target system after designating a type of packet for transmission / reception; And reading a data file to be downloaded through the established communication line, transmitting and receiving a check character between the host system and the target system to check the state of the target system, and then downloading the file to the target system. Including data download method. The method of claim 1, wherein the downloading process of the third step comprises: sending a test character to check the state of the target system to download data and receiving a prompt and a character indicating the end of the prompt from the target system; A fourth step of determining whether the state of the target system is normal; As a result of the determination in the fourth step, if the abnormality is abnormal, the fourth step is repeatedly performed for a predetermined number of times, and if the normality is normal, a download message and a download start message are transmitted to the target system, and a response message is received from the target system. A fifth step of receiving and checking an error; And a message indicating that the downloading is completed after repeatedly transmitting the packet while checking the error until all the packet data are transmitted. And a sixth step of transmitting to the destination system.