The design of a DeviceNet - SPI converter module based on the STM32 MCU

According to the characteristics of the STM32 technology and DeviceNet fieldbus, this paper designs a DeviceNet - SPI converter module. The converter module solves the problem of conversion between the DeviceNet fieldbus and the SPI protocol, making the equipment with SPI interface have the communication function of DeviceNet fieldbus through the converter module, at the same time making up for the shortcomings of SPI protocol with no response mechanism. The converter module is introduced the design in detail from the hardware to software and the building of experimental platform to test the design of the system in this paper. Besides, the paper contains testing and verifying the feasibility and reliability of the converter module through the analysis of the results.