I2C (inter-integrated circuit) bus detection device

Abstract

The invention provides an I2C (inter-integrated circuit) bus detection device. The device comprises a first trigger, an inverter, a second trigger, a microcontroller, a memory and a display interface, wherein a clear pin of the first trigger receives the clock signals output by clock lines of an I2C bus; a clock pin of the first trigger receives the data signals output by data lines of the I2C bus and outputs the first trigger signals; the input terminal of the inverter receives the data signals output by the data lines of the I2C bus and inverts the data signals; a clear pin of the second trigger receives the clock signals of the I2C bus; a clock pin of the second trigger is connected with the output terminal of the inverter to receive the inverted data signals and outputs the second trigger signals; a first interrupt pin of the microcontroller receives the first trigger signals, a second interrupt pin is connected with the second trigger signals and a third interrupt pin receives the clock signals of the I2C bus; an input pin of the microcontroller receives the data signals of the I2C bus; the memory is connected with an input / output pin of the microcontroller and is used for memorizing the data captured by the microcontroller; and the display interface is connected with an input / output pin of the microcontroller and is used for displaying the signals memorized in the memory.

Description

technical field [0001] The invention relates to a detection device, in particular to an I2C bus detection device. Background technique [0002] The I2C bus is a two-wire serial bus (including clock signal lines and data signal lines) developed by PHILIPS for connecting microcontrollers and their peripherals. 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, which increases the security of the system and facilitates management. [0003] However, in the design or use of the I2C bus, I2C bus detection equipment is often used to detect the data signals and clock ...

AI Technical Summary

Problems solved by technology

[0003] However, in the design or use of the I2C bus, I2C bus detection equipment is often used to detect the data signals and clock signals on the bus, so as to debug and debug electronic equipment according to the clock and data signals on the I2C bus. However, the usual I2C bus detection equipment is mostly designed for waveform storage and playback, which requires the use of multiple memory chips and corresponding encoding and decoding circuits. The circuit structure is complex and the cost is high.

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