WO2012059066A1

WO2012059066A1 - Method and system for locating fault in serial port

Info

Publication number: WO2012059066A1
Application number: PCT/CN2011/081786
Authority: WO
Inventors: 蔡雪娟
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-04
Filing date: 2011-11-04
Publication date: 2012-05-10
Also published as: CN101997737A

Abstract

Disclosed are a method and system for locating a fault in a serial port. The method includes: acquiring, by one or more single boards, a serial port debug command from a main control board via a backplane using a serial port on the one or more single boards; sending, by the one or more single boards, corresponding serial port information to the main control board according to the serial port debug command so as to carry out serial port fault location in the one or more single boards. The flexibility of locating fault in the serial port can be improved by way of the present invention.

Description

The present invention relates to the field of communications, and in particular to a method and system for fault diagnosis of a serial port. In a communication device, when a board fails, the main control board is mainly located through the Ethernet interface on the backplane side or the HDLC bus. By default, each board has a serial port for debugging. The serial port socket is connected to the board, and then the serial port cable is connected to the personal computer. When the positioning is faulty, the HyperTerminal is used to log in to the board. Since the debugging serial port is only connected to the socket, when the device is running as a whole, the serial port information cannot be viewed. When a problem occurs in a certain board, the serial port needs to be pulled out to remove the adjacent board (affecting the service), etc., and the environment is not damaged. Convenient, and the serial port is not only easy to damage, but also damages the pad and damages the board. In the related art, after the Ethernet interface on the backplane side is broken or the HDLC bus is faulty, the serial port fault location cannot be performed on the board through the serial port. SUMMARY OF THE INVENTION The present invention provides a serial port positioning fault method and system to solve at least a serial port fault location problem after a fault occurs on a backplane side Ethernet port or a HDLC bus in a related art. The problem. According to an aspect of the present invention, a serial port location failure method is provided. The method for locating a serial port according to the present invention includes: one or more boards use the serial port on the one or more boards to obtain serial port debugging commands from the main control board through the backplane; one or more boards send according to serial port debugging commands. The serial port information is sent to the main control board to locate the serial port fault on one or more boards. Preferably, before the one or more boards use the serial port of the one or more boards to obtain the serial port debugging command from the main control board through the backplane, the method further includes: when one or more boards fail, the master control The board determines whether the Ethernet port or the advanced data link connected to one or more boards controls the HDLC. If the judgment result is no, the main control board sends the serial port to one or more boards through the backplane according to the received command. Debug command. Preferably, one or more boards use the serial port on the one or more boards to obtain serial port debugging commands from the main control board through the backplane. The one or more boards use the serial ports on the one or more boards. The serial port debugging command is obtained from the bus of the main control board connected to the serial bus of the backboard through the serial bus of the backplane connected thereto. Preferably, one or more boards use the serial port on the one or more boards to obtain serial port debugging commands from the main control board through the backplane. The one or more boards use the serial ports on the one or more boards. The serial debugging command is obtained from the I2C of the main control board connected to the internal integrated circuit I2C of the backplane through the I2C of the backplane connected thereto. Preferably, one or more boards use the serial port of the one or more boards to obtain serial port debugging commands from the I2C of the main board connected to the I2C of the back board through the I2C of the backplane connected thereto: Multiple boards use the serial port on one or more boards to pass through the serial port switch chip on one or more boards. The I2C that receives the backplane is forwarded by I2C of one or more boards connected to the I2C of the backplane. Give serial port debugging commands to the serial port switch chip. According to another aspect of the present invention, a serial port location fault system is provided. The serial port location fault system according to the present invention includes: one or more boards, wherein one or more boards include: an acquisition module, configured to use the serial port on the board on which the board is located to obtain serial port debugging from the main control board through the back board The positioning module is configured to send the corresponding serial port information to the main control board according to the serial port debugging command to perform serial port positioning fault on one or more boards. Preferably, the system further includes: a main control board, wherein: the main control board includes: a judging module, configured to determine, when one or more boards fail, determine an Ethernet port or an advanced port connected to one or more boards The data link controls whether the HDLC is valid. The sending module is configured to send a serial port debugging command to one or more boards through the backplane according to the received command when the determination result is no. Preferably, the obtaining module comprises: a first acquiring sub-module, configured to use a serial port bus of the backboard connected to the board through which the serial port on the board is located, and a bus of the main control board connected from the serial bus of the backboard Get serial debugging commands. Preferably, the obtaining module includes: a second acquiring sub-module, configured to obtain a serial port from the I2C of the main control board connected to the I2C of the backplane by using the serial port on the board on which the board is located through the I2C of the backplane connected to the board Debug command. Preferably, the second obtaining module further includes: a receiving unit configured to use the serial port on the board on which the board is located to pass through the serial port switch chip on the board where the board is located, and the I2C receiving the back board is connected to the I2C of the back board by one or more The I2C of the board is forwarded to the serial port debugging command of the serial port switch chip. The board uses the serial port to obtain the serial port debugging command from the main control board through the serial port, and sends the corresponding serial port information to the main control board to perform serial port positioning fault on the main board according to the command, which overcomes the related technology. The port or HDLC can perform the fault of serial port positioning fault on the board, which improves the flexibility of serial port positioning faults. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart of a serial port positioning failure method according to an embodiment of the present invention; FIG. 2 is a serial port topology diagram according to an embodiment of the present invention; FIG. 4 is a block diagram of a method for detecting a serial port in accordance with a preferred embodiment of the present invention; FIG. 5 is a block diagram showing a structure of a board according to an embodiment of the present invention; FIG. 6 is a block diagram of a board according to an embodiment of the present invention; FIG. 7 is a schematic structural diagram of electrical connection between a main control board and a backboard according to an embodiment of the present invention; and FIG. 8 is a structural block diagram of a serial port fault location system according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. This embodiment provides a method for locating a serial port. FIG. 1 is a flowchart of a method for locating a serial port according to an embodiment of the present invention. As shown in FIG. 1 , the method includes: Step S102: Using one or more boards The serial port of the one or more boards obtains the serial port debugging command from the main control board through the backplane. Step S104: One or more boards send corresponding serial port information to the main control board for one or more according to the serial port debugging command. The board is faulty in serial port positioning. Through the above steps, the board uses the serial port to obtain the serial port debugging command from the main control board through the backplane, and sends the corresponding serial port information to the main control board to perform serial port positioning faults on the main board. This overcomes the related technology. Or the HDLC can perform the fault of the serial port positioning fault on the board, which improves the flexibility of the serial port positioning fault. Preferably, before step S102, the method further includes: when one or more boards fail, the main control board determines an Ethernet port or a high-level data link control (High-level Data Link) connected to one or more boards. Control, or HDLC for short, is valid. If the judgment is no, the main control board sends a serial debugging command to one or more boards through the backplane according to the received command. With the preferred embodiment, before the serial port debugging command is sent, it is first determined whether the Ethernet port or the HDLC is valid, and the accuracy of the serial port positioning fault is improved. Preferably, a preferred embodiment of step S104 is described below. One or more boards use the serial port of the one or more boards to obtain serial debugging commands from the bus of the main control board connected to the serial port bus of the back board through the serial bus of the back board connected thereto. With the preferred embodiment, the serial port debugging command is transmitted through the bus connected to the single board, the back board, and the main control board, which overcomes the defect of relying on the Ethernet port or the HDLC for fault location, and improves the flexibility of fault location. Reduced equipment costs. Preferably, a preferred embodiment of step S104 is described below. One or more boards use the serial port of the one or more boards through the inter-integrated circuit (Inter-Integrated Circuit, I2C) of the backplane connected thereto, from the main control board connected to the I2C of the backplane. I2C obtains serial debugging commands. Through the preferred embodiment, the transmission of the serial port debugging command is performed by using the existing bus, which overcomes the defect of relying on the Ethernet port or the HDLC for fault location, improves the flexibility of fault location, and reduces the equipment cost. Preferably, one or more boards use the serial port of the one or more boards to obtain serial port debugging commands from the I2C of the main board connected to the I2C of the back board through the I2C of the backplane connected thereto: Multiple boards use the serial port on one or more boards to pass through the serial port switch chip on one or more boards. The I2C that receives the backplane is forwarded by I2C of one or more boards connected to the I2C of the backplane. Give serial port debugging commands to the serial port switch chip. Through the preferred embodiment, the serial port switch chip is used to control whether the serial port accepts the serial port debugging command, thereby improving the flexibility of the serial port fault location. The first embodiment of the present invention provides a method for locating a serial port. In this embodiment, the serial port of all the boards in the subrack is connected to the CPU serial port of the main control board through a bus. When you need to obtain the serial port information of a board, you only need to send a serial port open debugging command to the board through the main control board (via the interface manager's I2C (Inter- Integrated Circuit) bus notification or direct backplane. The hard disk connection control, the serial port information of the board can be output and controlled through the unified serial port on the main control board. FIG. 2 is a serial port topology diagram according to an embodiment of the present invention. The specific topology diagram is shown in FIG. 2 . Preferably, the common single board debugging serial port is connected to the back board through a switch chip, and the back board provides a serial port bus, and the main control board CPU provides a serial port and a back board serial port bus. In this embodiment, FIG. 3 is a schematic diagram of electrical connection between a serial port and a backplane serial bus in the board according to an embodiment of the present invention. As shown in FIG. 3, the serial port connection of the system in the ordinary board is shown in FIG. 3, including the following Aspects: 1: Design the main chip. Add a serial port switch chip to the board. This is a controllable serial port switch chip.

The CPU controls the on/off of the serial port transceiver by controlling the EN pin of the chip. By default, the serial port is closed.

2: The system serial port uses the main control board to communicate with the board through the interface manager I2C interface on the board, and sends the command to open the serial level chip.

3: The serial port on the board uses the interface manager on the board to communicate with the CPU, and sends the command to open the serial level chip to the CPU. The CPU controls the serial port transceiver to turn on and off by controlling the enable pin of the serial port switch chip. Through the above three aspects, the main control board sends a serial port open debugging command to the board (via the interface manager I2C (Inter-Integrated Circuit) bus notification or direct backplane hard-wired control), the board The serial port information is output and controlled through the unified serial port of the main control board. Embodiment 2 In this embodiment, a method for fault diagnosis of a serial port is provided. FIG. 4 is a flowchart of a method for fault diagnosis of a serial port according to a preferred embodiment of the present invention. As shown in FIG. 4, the method includes the following steps: Step S402 : Determine if there is a malfunction. If the result of the determination is yes, step S404 is performed, otherwise, step S406 is performed. Step S404: Determine whether the Ethernet is valid. If the result of the determination is yes, step S408 is performed, otherwise, step S406 is performed. Step S406: Exit the process. Step S408: Determine whether it is necessary to open the board debugging serial port. If the result of the determination is yes, step S410 is performed, otherwise, step S406 is performed. Step S410: The host sends a serial port open command to the board through the main control board and the system I2C bus. When the board receives the serial port open command from the backplane I2C bus, the debug serial port is opened on the board. Step 412: The host passes the serial port. Read the fault information. This embodiment provides a serial port location fault system, the system includes: one or more boards, and FIG. 5 is a structural block diagram of a board according to an embodiment of the present invention, where one or more boards include: an obtaining module 52 And the positioning module 54 is described in detail below. The obtaining module 52 is configured to obtain a serial debugging command from the main control board through the backplane through the serial port on the board, and the positioning module 54 is connected to the obtaining module 52. The serial port debugging command is sent according to the obtaining module 52, and the corresponding serial port information is sent to the main control board to perform serial port positioning fault on one or more boards. FIG. 6 is a block diagram of a preferred structure of a serial port location fault system according to an embodiment of the present invention. The system includes: a main control board, the main control board includes: a judging module 62 and a sending module 64. The acquiring module 52 in the board 2 includes The first obtaining sub-module 522, the second obtaining sub-module 524, and the second obtaining sub-module 524 further include: a receiving unit 5242, which is described in detail below. The system further includes: a main control board 4, wherein, the main The control board includes: a judging module 62, configured to determine whether an Ethernet port or an HDLC connected to one or more boards is valid when one or more boards are faulty; and the sending module 64 is connected to the judging module 62, setting When the determination result of the determination module 62 is no, the serial port debugging command is sent to one or more boards through the backplane according to the received command. The obtaining module 52 of the board 2 includes: a first acquiring sub-module 522, configured to use a serial port bus of the backboard connected to the board through which the serial port on the board is located, and a main bus connected from the serial port bus of the backboard The bus of the control board obtains serial debugging commands. The obtaining module 52 of the board 2 includes: a second obtaining sub-module 524, configured to use the I2C of the backplane connected to the board where the board is located, and the main control board connected to the I2C of the backboard. I2C gets serial debugging commands. The second obtaining module 524 further includes: a receiving unit 5242, configured to use the serial port on the board where the board is located to pass the serial port switch chip on the board where the board is located, and receive the I2C of the back board through one or more connected to the I2C of the back board. The I2C of the board is forwarded to the serial port debugging command of the serial port switch chip. Embodiment 3 In this embodiment, a serial port positioning fault system is provided. In this embodiment, the debug serial port on the board is connected to the serial port serial bus, and the serial port bus on the back board and the CPU serial port on the main control board are electrically connected. Connection; The main control board interface manager I2C on the board is connected to the backplane I2C bus, and the backplane I2C bus is electrically connected to the I2C bus on the main control board. The main control board controls the opening and closing of the serial port of the board through I2C. FIG. 7 is a schematic diagram showing the electrical connection relationship between the main control board and the back board according to an embodiment of the present invention, as shown in FIG. 7. In the board, the serial port is the main debugging channel of the CPU (Central Processing Unit). Especially after using the Linux operating system, the shell under the serial port is a very good channel for board debugging and fault location. As the serial port of the system, not only the debug serial port on the board should be led to the debugging socket in the board, but also to the main control board through the back board, and the resistor is used as a compatible design. Preferably, the serial port design can be debugged in the board in the following manner: In the single board, the method for designing the compatibility between the debugging serial port and the system serial port by using the resistor is: the in-board CPU debugging serial port has an electrical connection relationship with the serial port switch chip; The internal serial port switch chip has an electrical connection relationship with the backplane serial bus. Preferably, the serial port opening and closing design on the serial port switch chip in the board can be performed in the following manner. Specifically, the interface manager and the CPU in the board, the backplane I2C bus, and the three are enabled to control the design of the serial port switch chip: the intra-board interface manager I2C has an electrical connection relationship with the backplane I2C bus; the intra-board interface manager It has an electrical connection relationship with the CPU; the CPU in the board has an I/O and an electrical connection relationship between the serial port switch chip enable pin; preferably, the electrical connection relationship between the main control board and the back board can be designed as follows. Specifically, the main control board CPU, serial port socket and backplane I2C bus and serial bus design mode: main control board CPU I2C interface and backplane I2C bus have electrical connection relationship main control board CPU serial port and backplane serial bus have electrical connection The fourth embodiment of the present invention provides a system serial port fault location system. FIG. 8 is a block diagram of a serial port fault location system according to an embodiment of the present invention. The system includes: a host 82, a network cable 84, and a system board 86 ( The main control board), the back board 88 and the single board 89 are described in detail below. The host 82 cooperates with the network cable 84 to provide a network port. The universal computer network port is connected to the network cable 84 for running the loading tool software, providing user operation and control, generating loading timing, and transmitting loading data. The setting of the tool software is matched with the debugging serial port of the board 89. The network cable 84 is used to connect the host 82 and the main control board 86. The signal levels of the two are the same, and no switching circuit is required on the cable. The main control board 86 cooperates with the network cable 84 to provide a network port. The host 82 communicates with the main control board 86 through the network cable 84. The serial port of the main control board CPU is connected to the serial port bus of the backplane 88. The CPU I2C interface on the main control board 86 is The backplane 88 I2C bus is connected. The backplane 88, the I2C bus on the main control board 86 is connected to the I2C bus on the backplane 88, and the I2C bus on the backplane 88 is connected to the I2C on each board 89 for issuing a serial port switch command, the main control board. Serial bus on 86 The serial bus on the backplane 88 is connected to the serial port on the backplane 88. The main control board 86 and the single board 89 perform fault location communication. The board 89, the debug serial port on the board 89 is connected to the serial bus on the back board 88, and the I2C on the board 89 is connected to the I2C bus on the back board 88. It should be noted that the board is not limited to one single board, and may be multiple, depending on the specific conditions of the system. The method for the serial port location fault is obtained by the above-mentioned embodiment. The method uses the serial port to obtain a serial port debugging command from the main control board through the backplane, and sends corresponding serial port information to the main control board according to the command. The board performs the serial port locating fault, which overcomes the defect that the Ethernet port or the HDLC can perform the serial port positioning fault on the board in the related art, improves the flexibility of the serial port positioning fault, and reduces the equipment cost of the system. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

1. A method for serial port location failure, including:

One or more boards use the serial ports on the one or more boards to obtain serial debugging commands from the main control board through the backplane.

The one or more boards send the corresponding serial port information to the main control board to perform serial port positioning failure on the one or more boards according to the serial port debugging command.

The method according to claim 1, wherein before the one or more boards use the serial port on the one or more boards to obtain a serial debugging command from the main control board through the backplane, the method further includes:

When the one or more boards are faulty, the main control board determines whether an Ethernet port or an advanced data link control HDLC connected to the one or more boards is valid;

If the result of the determination is no, the main control board sends a serial port debugging command to the one or more boards through the backplane according to the received command.

The method of claim 1, wherein the one or more boards use the serial port on the one or more boards to obtain serial port debugging commands from the main control board through the backplane, including:

The one or more boards obtain the bus from the main control board connected to the serial bus of the backboard by using a serial port of the one or more boards through a serial bus of the backplane connected thereto The serial port debugging command.

The one or more boards use the I2C of the backplane connected thereto through the serial port of the one or more boards, and the I2C of the main control board connected to the internal integrated circuit I2C of the backplane Obtain the serial debugging command.

The method according to claim 4, wherein the one or more boards use the serial port of the one or more boards through the I2C of the backplane connected thereto, from the backplane The I2C of the main control board connected to the I2C obtains the serial port debugging command, including:

The one or more boards use the serial port on the one or more boards to pass through the serial port switch chip on the one or more boards, and the I2C receiving the back board is connected to the I2C of the back board. The I2C of the one or more boards is forwarded to the serial port debugging command of the serial port switch chip. A serial port location fault system includes: one or more boards, where the one or more boards include:

Obtain the module, set to use the serial port on the board where the board is located to obtain the serial port debugging command from the main control board through the backplane;

The locating module is configured to send a corresponding serial port information to the main control board according to the serial port debugging command to perform serial port positioning failure on the one or more boards. The system according to claim 6, further comprising: a main control board, wherein: the main control board comprises: a judging module, configured to judge and the one when the one or more boards are faulty Whether the Ethernet port connected to multiple boards or the advanced data link controls whether the HDLC is valid.

The sending module is configured to send a serial port debugging command to the one or more boards through the backplane according to the received command when the determining result is no. The system of claim 6, wherein the obtaining module comprises: a first obtaining sub-module, configured to use a serial port of the backplane connected to the board on which the board is located, and The bus of the main control board connected to the serial bus of the backboard acquires the serial port debugging command. The system of claim 6, wherein the obtaining module comprises: a second acquiring sub-module, configured to use the I2C of the backplane connected to the board with the serial port on the board where the board is located, The I2C of the main control board connected to the I2C of the backplane acquires the serial port debugging command. The system of claim 9, wherein the second obtaining module further comprises:

The receiving unit is configured to use the serial port on the board on which the board is located to pass through the serial port switch chip on the board where the board is located, and the I2C receiving the back board is connected to the one or more boards connected to the I2C of the back board. The I2C forwards the serial port debugging command to the serial port switch chip.