I2C bus communication control method, device and system and readable storage medium

Abstract

The invention discloses an I2C bus communication control method, device and system and a readable storage medium. The method comprises the following steps: receiving configuration information of an I2C bus sent by an upper-layer application; analyzing the configuration information to obtain a plurality of polling parameters; writing the plurality of polling parameters into a polling table; and controlling the I2C bus, and executing a corresponding read-write operation according to the polling table. According to the method, the read-write operation executed on the I2C bus is carried out according to the polling table, so that the accurate communication condition of the I2C bus can be obtained directly based on the polling table without polling the access bus state; congestion risks can bereduced, and when a plurality of main devices exist, the access efficiency of a single main device can also be achieved. Management and maintenance are convenient; and if hardware or function change occurs, only the polling table needs to be updated, a program does not need to be modified, and function update or hardware replacement can be quickly adapted.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to an I2C bus communication control method, device, system and readable storage medium. Background technique [0002] The I2C (Inter-Integrated Circuit) bus is a two-wire serial bus used to connect microcontrollers and their peripherals. It is a bus standard widely used in the field of microelectronics communication control. [0003] I2C communicates information between devices connected to the bus through the serial data (SDA) and serial clock (SCL) lines. Each device has a unique address identification, and can be used as a transmitter or receiver (determined by the function of the device). The master is the device that initiates the data transfer on the bus and generates the clock signal that allows the transfer (ie, the master device). Accordingly, any addressed device (slave) is considered a slave. [0004] In the existing I2C controller access scheme, it is p...

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Problems solved by technology

[0004] In the existing I2C controller access scheme, it is proposed to use the polling method when accessing the I2C controller to obtain the bus status to solve the problem of low efficiency of the existing I2C access standard process

However, in this type of scheme, the polling method requires developers to design a polling program specially. Whenever there is a hardware change, the polling program must also change accordingly, and when the bus is busy and congested, the upper layer will frequently obtain the bus Status information, occupying system resources, and extremely low management efficiency

In other words, the problem of low I2C access efficiency is still not well resolved

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