CAN Bus in Measuring and Controlling System and Its DSP Implementation

摘要

This design take TMS320LF2407 DSP as the core, which offers a controller area network (CAN) communications module that meets 2.0B specifications and other peripherals, taking into CAN transceiver, carry out the remote measuring and controlling system based on CAN bus. This paper introduces both hardware and software of this system. The main concerns are design, realization and the rules of the node of CAN bus. The result of test shows many aspects of advantages. The multi-master capabilities of CAN bus make the system reset more smartly. Enhanced DSP using in this system make the system upgrade easily. The speed rate of data transmission reaches 1Mbit/s. The stability and good reliability of data transmission can meet the real-time need of field. Meanwhile the expense of connecting wires, maintenance and installation are decreased because the use of DSP and CAN bus. It improves the price ration of the system. Thus it will be widely applied.