CN211149434U

CN211149434U - Port multiplexing device based on BMC interaction

Info

Publication number: CN211149434U
Application number: CN201922244866.8U
Authority: CN
Inventors: 王焕超
Original assignee: Suzhou Inspur Intelligent Technology Co Ltd
Current assignee: Suzhou Inspur Intelligent Technology Co Ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-07-31
Anticipated expiration: 2029-12-13

Abstract

The utility model provides a multiplexing device of port based on BMC is mutual, include: the CPU is provided with a first UART port and a first GPIO port; the BMC is provided with a second UART port and a second GPIO port; the first UART port is in communication connection with the level conversion chip; the level conversion chip is in communication connection with the Switch; the Switch is in communication connection with a second UART port; the first GPIO port is in communication connection with a second GPIO port; the BMC is in communication connection with the Switch; the utility model provides an insufficient condition of UART port, realized UART's multiplexing, improved BMC and the interactive efficiency of CPU.

Description

Port multiplexing device based on BMC interaction

Technical Field

The utility model belongs to the technical field of independently controllable platform, concretely relates to port multiplexing device based on BMC is mutual.

Background

Along with the development of the national autonomous platform, the server of the autonomous controllable platform also has a corresponding development, and some autonomous controllable servers use serial ports to complete interaction between the BMC and the CPU, but the number of the platform serial ports is limited, so that the scheme of interaction with the BMC cannot be met.

Universal Asynchronous Receiver/Transmitter (UART), commonly referred to as UART, is typically integrated into the connection to other communication interfaces. As shown in fig. 1, at present, two UARTs are connected when a CPU communicates with a BMC, one UART is used as a debugging serial port, and the other UART is used as a communication serial port.

SUMMERY OF THE UTILITY MODEL

The above-mentioned not enough to prior art, the utility model provides a port multiplexing device based on BMC is mutual to solve above-mentioned technical problem.

The utility model provides a multiplexing device of port based on BMC is mutual, include: CPU, BMC, level switching chip and Switch; the CPU is provided with a first UART port and a first GPIO port; the BMC is provided with a second UART port and a second GPIO port; the first UART port is in communication connection with the level conversion chip; the level conversion chip is in communication connection with the Switch; the Switch is in communication connection with a second UART port; the first GPIO port is in communication connection with a second GPIO port; the BMC is in communication connection with the Switch.

The utility model discloses a UART port is simultaneously used as a debugging serial port of a CPU and a communication serial port of a BMC; the Switch is used for switching the states of two serial ports; the GPIO port is used as an interrupt sending port; the level conversion chip is used for performing level conversion on the serial signals provided by the UART port and then sending the serial signals to the Switch.

The system further comprises a serial port conversion chip, wherein the serial port conversion chip is in communication connection with the COM port of the client; the serial port conversion chip is used for sending and receiving information when a serial port is communicated with a PC.

Further, the system also comprises a third UART port, wherein the third UART port is in communication connection with a COM port of the client; in the preferred embodiment, the third UART port is used as a debugging serial port for sending debugging log information transmitted by the system and storing log information records in the BMC.

Further, the serial port conversion chip is a MAX3232 chip.

Further, the level conversion chip is an RS-232 chip;

the utility model has the advantages that,

the utility model provides a pair of port multiplexing device based on BMC is mutual has realized through setting up Switch and GPIO port that the UART port is as the function multiplexing of debugging serial ports and communication serial ports, and need not the switching of hardware circuit, has solved the not enough condition of UART port, has realized the multiplexing of UART, has improved BMC and the interactive efficiency of CPU.

Furthermore, the utility model relates to a principle is reliable, and simple structure has very extensive application prospect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the prior art structure of the present application;

FIG. 2 is a schematic diagram of the structure of an apparatus according to an embodiment of the present application;

FIG. 3 is a schematic diagram of the structure of an apparatus according to an embodiment of the present application;

wherein, 1, CPU; 2. BMC; 3. switch; 4. an RS-232 chip; 5. MAX3232 chip; 6. a first UART port; 7. a first GPIO port; 8. a second UART port; 9. a second GPIO port; 10. a third UART port.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

As shown in fig. 1, an embodiment of the present application provides a port multiplexing device based on BMC interaction, including: CPU1, BMC2, Switch3, RS-232 chip 4 and MAX3232 chip 5; the CPU1 is provided with a first UART port 6 and a first GPIO port 7; the BMC2 is provided with a second UART port 8 and a second GPIO port 9; the RS-232 chip 4 is in communication connection with the first UART port 6, and the Switch3 is in communication connection with the RS-232 chip 4; the Switch3 is in communication connection with a MAX3232 chip 5; the MAX3232 chip 5 is in communication connection with a COM port of a client; the first GPIO port 7 is in communication connection with a second GPIO port 9; the BMC2 is communicatively coupled to Switch 3.

The method comprises the following concrete steps:

when the CPU1 needs to output serial port information to the outside, the BMC2 sends a Switch command to the Switch3, the Switch3 switches the first UART port 6 and the second UART port 8 to debug serial ports, and sends the serial port information to the client after serial port conversion is performed through the MAX3232 chip 5;

when the BMC2 needs to communicate with the CPU1, the BMC2 sends a Switch command to the Switch3, and the Switch3 switches the serial port channel to a mode in which the BMC2 communicates with the CPU1, that is, by sending a command, the first UART port 6 and the second UART port 8 are switched to communication serial ports, so that the communication of the BMC2 with the CPU1 is realized;

when the CPU1 needs to communicate with the BMC2, the CPU1 sends an interrupt to the BMC2 through the first GPIO port 7, the second GPIO port 9 of the BMC2 sends a Switch command to the Switch3 after receiving the interrupt, and the Switch3 switches the serial port channel to a mode in which the CPU1 communicates with the BMC2, that is, the first UART port 6 and the second UART port 8 are switched to communication serial ports, so that the CPU1 communicates with the BMC 2.

Example 2

In this embodiment, a third UART port 10 is added on the basis of embodiment 1, and the third UART port 10 is arranged on the BMC and is in communication connection with a COM port of the client; the third UART port is used as a debugging serial port and used for sending debugging log information transmitted by a system and storing log information records in the BMC.

Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A port multiplexing device based on BMC interaction comprises: the CPU is provided with a first UART port and a first GPIO port; the BMC is provided with a second UART port and a second GPIO port; the first UART port is in communication connection with the level conversion chip; the level conversion chip is in communication connection with the Switch; the Switch is in communication connection with a second UART port; the first GPIO port is in communication connection with a second GPIO port; the BMC is in communication connection with the Switch.

2. The port multiplexing device based on BMC interaction of claim 1, further comprising a serial port conversion chip, wherein the serial port conversion chip is communicatively connected to a COM port of a client.

3. The port multiplexing device for BMC interaction according to claim 1, further comprising a third UART port, wherein the third UART port is communicatively connected to a COM port of the client.

4. The device of claim 2, wherein the serial port conversion chip is a MAX3232 chip.

5. The BMC interaction-based port multiplexing device of claim 1, wherein the level shifting chip is an RS-232 chip.