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I2C bus monitoring system and monitoring method

A bus monitoring and bus technology, which is applied in hardware monitoring, instruments, electrical digital data processing, etc., can solve the problems of I2C bus data transmission and system status monitoring that cannot be realized, and achieve real-time processing, reliable design principles, and wide application foreground effect

Inactive Publication Date: 2018-03-06
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The start and end signals are sent by the master device, and the response signal is sent by the slave device. The abnormality of the I2C bus connecting the master device and the slave device often leads to the failure of data transmission and system status monitoring.

Method used

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  • I2C bus monitoring system and monitoring method

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Embodiment Construction

[0036] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0037] Such as figure 1 As shown, an I2C bus monitoring system provided in this embodiment includes a master device 1 and several slave devices 2, and the master device 1 is connected to the slave devices 2 through the I2C bus 3;

[0038] It also includes a signal acquisition module 4, a data analysis module 5 and a data transmission module 6 connected in sequence;

[0039] The data transmission module 6 is connected with a data monitoring module 7, and the data monitoring module 7 is connected with a storage module 10;

[0040] The system also includes a control module 8 connected to the signal acquisition module 4 and a storage module 10 ; the control module 8 is also connected to an alarm module 11 .

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Abstract

The invention relates to an I2C bus monitoring system and monitoring method. A bus is connected with a master device and a plurality of slave devices; and the master device and the slave devices perform data transmission through the bus. The method is characterized by comprising the following steps that the master device sends transmitted data to the slave devices; a signal collection module collects data transmitted on the I2C bus; a data analysis module performs protocol analysis on the data collected by the signal collection module and transmits the data to a data monitoring module throughthe data transmission module; and the data monitoring module monitors received real-time data transmitted on an I2C link, and records and stores abnormal data of not receiving response signals of theslave devices in a set transmission time by the master device in a storage module, and meanwhile, an alarming module sends out alarming information.

Description

technical field [0001] The invention belongs to the technical field of I2C bus, and in particular relates to an I2C bus monitoring system and a monitoring method. Background technique [0002] The I2C (Inter-Integrated Circuit) bus is a two-wire serial bus developed by PHILIPS in the 1980s for connecting microcontrollers and their peripherals. The main advantages of the I2C bus are its simplicity and efficiency. [0003] The I2C bus is a serial bus that can send and receive data, perform bidirectional data transmission between devices, and have a unique address for each device connected in parallel on a bus. [0004] The I2C bus has two signal lines, one is SDA (data line) and the other is SCL (clock line). The clock signal is generated by the master control device. There are three types of signals in the I2C bus in the process of transmitting data, namely: Start signal, end signal and acknowledge signal. [0005] Start a new number: When SCL is high level, SDA jumps from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/30G06F11/32
CPCG06F11/3027G06F11/327
Inventor 崔立志叶丰华李岩
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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