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Control method and device for I2C communication

A control method and communication status technology, applied in the field of communication, can solve problems affecting user experience, affecting system stability, abnormal reading parameters, etc., to avoid abnormal I2C reading/writing data, improve user experience, and avoid display abnormal effect

Inactive Publication Date: 2018-11-06
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some application scenarios, such as backlight or image quality adjustment, the main and auxiliary systems will perform I2C communication at the same time. At this time, the MCU is both the master device and the slave device. Stuck or disordered state affects system stability and thus affects user experience

Method used

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  • Control method and device for I2C communication
  • Control method and device for I2C communication
  • Control method and device for I2C communication

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0045] The embodiment of the present invention is applicable to a terminal device with at least two I2C communication systems. The terminal device may be a smart TV, a laser TV, a smart billboard, a smart phone, etc. It can be understood that the embodiment of the present invention does not apply to a specific terminal device Add restrictions.

[0046] For ease of understanding, before explaining and describing the embodiments of the present invention in detail, the application scenarios and related technical problems of the embodiments of the present invention will be introduced in detail.

[0047] First, the application scenarios of the embodiments of the present invention are introduced.

[0048] Application scenario one:

[0049]...

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Abstract

The invention discloses a control method and device for I2C communication. The method comprises the steps that when a request of a master device in a first system for performing I2C communication is received, the communication state, in a second system, of a slave device in the first system is judged, wherein the communication state comprises idle and busy; when the communication state is idle, the I2C communication is performed; and when the communication state is busy, preset time is delayed, and the communication state, in the second system, of the slave device in the first system is judgedagain. Through the control method and device, control over communication logic of terminal equipment adopting at least one I2C communication system through the working state of the slave device in the first system is realized, an I2C reading / writing data anomaly caused by the busy state of the slave device is avoided, therefore, an upper-layer software display anomaly caused by a bottom-layer data communication anomaly is avoided, the stability of the systems is improved, and user experience is improved.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to an I2C communication control method and device. Background technique [0002] The I2C (Inter Integrated Circuit, internal integrated circuit) bus is a bus standard widely used in the field of microelectronics communication control, and is used to connect the I2C master and the I2C slave. The master device is used to start the bus to transmit data and generate the clock to open the transmitting device. At this time, any addressed device is considered as a slave device. Usually there is only one master on the I2C bus. [0003] With the continuous increase of TV functions, the system framework of TV tends to be complex, and the realization of a complete function requires multiple systems for I2C data communication. Under this architecture, data anomalies will occur due to the incoordination of communication status between systems. Specifically, with figure 1 The TV...

Claims

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Application Information

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IPC IPC(8): G06F13/42G06F13/38
CPCG06F13/385G06F13/4282G06F2213/0016
Inventor 陈彦霖
Owner HISENSE VISUAL TECH CO LTD
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