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I2C bus communication control method and device, equipment and storage medium

A technology of communication control and equipment, applied in the server field, can solve problems such as I2C deadlock

Pending Publication Date: 2020-04-24
INSPUR BUSINESS MACHINE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a communication control method, device, equipment and storage medium of I2C bus, which are used to solve the problem of I2C deadlock

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  • I2C bus communication control method and device, equipment and storage medium
  • I2C bus communication control method and device, equipment and storage medium

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Embodiment Construction

[0040] The core of the present invention is to provide an I2C bus communication control method, device, equipment and storage medium for solving the problem of I2C deadlock.

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] figure 2 It is a connection schematic diagram of a controller for realizing the communication control method of the I2C bus provided by the embodiment of the present invention; image 3 It is a flowchart of an I2C bus communication control method provided by an embodiment of the...

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Abstract

The invention discloses an I2C bus communication control method. The method aims at solving the problem of I2C bus deadlock caused by abnormal reset of I2C main equipment in the I2C data transmissionprocess in the prior art. The method is based on a controller connected to an I2C bus between an I2C master device and an I2C slave device. The controller monitors the transmission process that the I2C master device sends I2C data to the I2C slave device through the I2C bus; in the transmission process, when the I2C master device is abnormal, a notification signal is sent to the I2C slave device to enable the I2C slave device to release the receiving state, so that the SDA signal of the I2C bus is recovered to a high level, occupation of the I2C bus is released in time, and therefore the I2C deadlock phenomenon can be avoided or released. The invention further discloses a communication control device and equipment of the I2C bus and a storage medium, which have the above beneficial effects.

Description

technical field [0001] The present invention relates to the technical field of servers, in particular to a communication control method, device, equipment and storage medium of an I2C bus. Background technique [0002] The I2C bus, developed by Philips, is one of the most widely used buses in electronic devices. The I2C bus is composed of two signal lines, one is the serial data signal line SDA, and the other is the serial clock signal line SCL. In an electronic system, different devices are connected to an I2C bus through an I2C signal line to transmit information. [0003] In the server system, the I2C bus is mainly used for voltage and temperature monitoring, reading and writing of EEPROM, and management of optical modules. figure 1 It is a schematic diagram of the connection of the I2C bus in the prior art. Such as figure 1 As shown, the SDA signal lines of all devices on the I2C bus are connected together to the SDA signal line of the I2C bus, the SCL signal lines o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/07
CPCG06F11/0745G06F11/0757G06F11/0793
Inventor 刘涛
Owner INSPUR BUSINESS MACHINE CO LTD
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