Development of I2C protocol analyzer

In systems containing many sensors, the correct and reliable communication of sensors with a central microcontroller is one of the most important factors in terms of system security. One of the communication protocols used for this purpose is the communication protocol known by its short name I2C. In this protocol, the use of only two cables is sufficient to ensure communication, the use of multiple Master-Master or multiple Master-Slave for the devices to be communicated is easily applicable, and the communication speed is in the range of DC-5MHz, which makes this communication protocol advantageous. The use of an external monitor or analyzer that monitors each communication protocol makes the communication network more secure. Thus, a secure communication structure is created. In this thesis, it is aimed to make a unique analyzer that will analyze the I2C protocol. For the I2C protocol analyzer, first a real-time signal processing circuit was modeled, and then its operation was tested on the development board in a laboratory environment. In this study, it was aimed to develop an original algorithm. The data obtained from the created system were analyzed on the personal computer and compared with the data obtained with commercial analyzers. The compliance rate of the signals received from the system with the I2C protocol and the signal quality were visualized with an interface software.