Apparatus for realizing I2C repeated reading-writing control

A technology of read-write control and controller, applied in the field of computer communication, can solve the problem of consuming the processing time of the main controller, and achieve the effect of liberating the load

Inactive Publication Date: 2017-09-15
深圳市有芯半导体技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In some applications of I2C (inter-integrated circuit, a standard interface circuit, invented by PHILIPS) such as panel control (including LED display and button scanning), the ma

Method used

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  • Apparatus for realizing I2C repeated reading-writing control
  • Apparatus for realizing I2C repeated reading-writing control
  • Apparatus for realizing I2C repeated reading-writing control

Examples

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Example Embodiment

[0027] Such as figure 1 Shown here is a device for implementing I2C repeated reading and writing control of the present invention, including a main controller, a repeated reading and writing controller, and an I2C controller. The repeated reading and writing controller is connected between the main controller and the I2C controller. .

[0028] The working principle of the present invention is: the main controller sends a read and write command to the I2C controller through the repeated read and write controller, and the I2C controller directly associates with an external I2C device to execute the read and write command;

[0029] The I2C controller feedbacks the completion status signal, the error status signal and the collected data to the repetitive read / write controller according to the execution result;

[0030] The repetitive read-write controller recognizes the signals fed back by the I2C controller and only feeds back valid signals to the main controller.

[0031] As an importan...

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Abstract

The invention discloses an apparatus for realizing I2C repeated reading-writing control. The apparatus comprises a main controller, a repeated reading-writing controller and an I2C controller, wherein the repeated reading-writing controller is connected between the main controller and the I2C controller; the main controller sends a reading-writing command to the I2C controller through the repeated reading-writing controller; the I2C controller is directly associated with an external I2C device to execute the reading-writing command; the I2C controller feeds back a completion state signal, an error state signal and collected data to the repeated reading-writing controller according to an executive result; and the repeated reading-writing controller identifies the signals fed back by the I2C controller and only feeds back the effective signal to the main controller. According to the apparatus, the repeated reading-writing controller is added between the main controller and the I2C controller to replace the main controller to wait for and process the reading-writing command for the I2C controller; and only the effective signal is fed back to the main controller, so that the processing time of the main controller is not wasted.

Description

technical field [0001] The invention relates to the field of computer communication, in particular to a device for realizing I2C repeated reading and writing control. Background technique [0002] In some applications of I2C (inter-integrated circuit, a standard interface circuit, invented by PHILIPS) such as panel control (including LED display and button scanning), the main controller needs to read Get the key input value of the I2C panel to judge whether there is a key input, which will inevitably consume a lot of processing time of the main controller. [0003] In view of the above technical problems, the prior art realizes "A Device and Method for Automatically Reading and Writing Internal Integrated Circuit Devices" (publication number CN1558332), which discloses a way to read and write I2C devices using hardware instead of CPU simulation . If this prior art needs to read and write I2C devices repeatedly according to a certain interval, the usual practice is as follo...

Claims

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Application Information

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IPC IPC(8): G06F13/12
CPCG06F13/126G06F2213/0016
Inventor 丁锐王荣雁
Owner 深圳市有芯半导体技术有限公司
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