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I2C device communication method and system

A device communication and device technology, applied in the field of data communication, can solve problems such as data error rewriting, and achieve the effect of avoiding rewriting, improving effectiveness and security

Inactive Publication Date: 2016-09-28
INVENTEC PUDONG TECH CORPOARTION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide an I2C device communication method and system to solve the problem that the data stored in the I2C device is incorrectly rewritten, thereby improving the effectiveness of data transmission

Method used

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Examples

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Embodiment 1

[0024] An embodiment of the present invention provides an I2C device communication system, such as figure 1 As shown, multiple I2C devices are included, and the initial communication information is transmitted between the multiple I2C devices before data is transmitted. The I2C device includes an I2C slave and at least one I2C master. Data transmission is performed between the I2C controlled device and at least one I2C master controller through an I2C bus.

[0025] The I2C device includes an I2C master controller and a plurality of I2C controlled devices, and data transmission is performed between the I2C master controller and the plurality of I2C controlled devices through an I2C bus. That is to say, when data transmission is performed between an I2C master controller and a plurality of I2C controlled devices, before the I2C master controller and a plurality of I2C controlled devices perform data transmission, the I2C master controller The initial communication information ...

Embodiment 2

[0032] An embodiment of the present invention provides an I2C device communication system, such as figure 2 As shown, multiple I2C devices are included, and the initial communication information is transmitted between the multiple I2C devices before data is transmitted. Data transmission is performed between the multiple I2C devices through the I2C bus.

[0033] When the I2C device includes multiple I2C master controllers but not I2C slave controllers, that is, when data transmission needs to be performed between multiple I2C master controllers, as in the first embodiment, in the Before data transmission between the multiple I2C master controllers, the start communication information also needs to be sent, the start communication information includes a first byte and a second byte, the first byte is 00000000, the The second byte is 00000001, and the first byte is sent first, and then the second byte is sent. Further, the second byte is START BYTE in the I2C protocol. The I...

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Abstract

The invention provides an I2C device communication method and system. The I2C device communication method is used for data transmission among a plurality of I2C devices, and a data sender transmits communication starting information firstly before the data transmission among the I2C devices. The data sender transmits the communication starting information firstly before the data transmission among the I2C devices, so that data of a data receiver, in the I2C devices, is prevented from being wrongly rewritten and the validity and security of the data transmission are improved.

Description

technical field [0001] The invention relates to the field of data communication, in particular to an I2C device communication method and system. Background technique [0002] In embedded projects, the I2C (Inter-Integrated Circuit) bus is often used. I2C bus is a two-wire serial bus (including clock signal line and data signal line) developed by PHILIPS, which is used to connect microcontrollers and their peripheral devices. It is a bus standard widely used in the field of microelectronics communication. . The I2C bus originated in the 80s, originally developed for audio and video equipment, and today is mainly used in server management, including the communication of the status of individual components. For example, administrators can query various components to manage system configuration or grasp the functional status of components, such as power supplies and system fans. It can monitor memory, hard disk, network, system temperature and other parameters at any time, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/42
CPCG06F13/4282G06F2213/0016
Inventor 施敏捷
Owner INVENTEC PUDONG TECH CORPOARTION
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