FPGA (Field Programmable Gate Array)-based method for realizing multi-path I2C (Inter-Integrated Circuit) bus port expansion

The invention relates to an FPGA (Field Programmable Gate Array)-based method for realizing multi-path I2C (Inter-Integrated Circuit) bus port expansion. The FPGA-based method is used for the communication between master equipment and slave equipment of a communication system, and a master control MCU (Micro Control Unit) of the master equipment is connected with one FPGA through a high-speed parallel port so as to form an FPGA interior circuit through programming, wherein the FPGA interior circuit comprises an MCU interface module and a multi-path I2C interface module. The I2C port formed by FPGA expansion completely accords with an I2C bus protocol; and by applying the method for communication port expansion in the invention to the master equipment in the I2C bus communication system, the speed of communication between the master equipment and the salve equipment or slave devices can be greatly increased.