A kind of IIC bridge communication method, device and system

Abstract

The invention relates to an IIC (Inter-Integrated Circuit) bridging communication method, an IIC bridging communication device and an IIC bridging communication system. The IIC bridging communication method comprises the following steps of receiving a first data signal, a first enable signal, a second data signal and a second enable signal according to a first clock signal, and generating an IIC input data signal according to the first data signal, the first enable signal, the second data signal and the second enable signal; generating an IIC output data signal according to the IIC input data signal; generating a third data signal, a third enable signal, a fourth data signal and a fourth enable signal according to the IIC output data signal, and sending the third data signal, the third enable signal, the fourth data signal and the fourth enable signal according to the first clock signal. According to the IIC bridging communication method disclosed by the invention, a bridging device is only provided with one IIC bridging communication device, thus not only are the maintainability, the universality and the instantaneity of the IIC bridging communication system increased, but also the cost of the IIC bridging communication system is reduced.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to an IIC bridge communication method, device and system. Background technique [0002] The IIC (Inter-Integrated Circuit, integrated circuit bus) bus is a simple, bidirectional, two-wire, synchronous serial bus that has been widely used in various electronic systems. The bus only needs one serial data (SDA, serial data) line to transmit the data signal on the IIC bus, and a serial clock (SCL, serial clock) line to transmit the clock signal of the IIC bus, which can realize the communication between any device connected to the bus Signal transmission, and each device has a unique address identification, whether it is a microcontroller, LCD (Liquid Crystal Display, liquid crystal display) driver, memory or keyboard interface, etc., can be used as a transmitter or receiver, that is, no matter Either the master device or the slave device can send data or receive data, the specific tra...

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Problems solved by technology

[0004] However, the above-mentioned IIC bridge communication method has the following disadvantages: (1) It is necessary to distinguish the master-slave device for the IIC communication between device A and device B. If the master-slave relationship between device A and device B is exchanged, the bridging scheme of bridge device C It also needs to be redesigned; (2) In order to realize bridging, a master device B1 and a slave device A1 need to be set in the bridge device C to complete the IIC communication between device A and device B, and the implementation process is cumbersome; (3) when device A and device B When the data bit of IIC communication between devices B changes or the address bit of IIC communication changes, the IIC communication protocol of bridge device C needs to be modified accordingly, and the system maintainability and versatility will deteriorate; (4) This bridge In the solution, it is usually necessary to add an additional communication handshake mechanism to ensure the correctness of the IIC communication between device A and device B. The system cost is high and the real-time performance is poor.

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