基于STM32H7的FDCAN通信系统设计与实现  

Design and Implementation of FDCAN Communication System Based on STM32H7

作　　者：李超 马雪 王文云 LI Chao;MA Xue;WANG Wenyun(Kunming Shipbuilding Equipment Research and Test Center,Kunming 650051)

机构地区：[1]昆明船舶设备试验中心,昆明650051

出　　处：《舰船电子工程》2020年第5期74-76,共3页Ship Electronic Engineering

摘　　要：在嵌入式开发应用中,为了实时掌控嵌入式设备运行状况和分析相关数据,经常需要上位机与嵌入式设备进行实时信息交互,CAN总线通信以其传输速率快、可靠性强、使用便捷及扩展性强等特点在工程实践中一直被用于实现设备间的信息交互。为了完成某工程项目中嵌入式设备通过CAN总线与上位机进行信息交互的任务,论文设计实现了一个基于STM32H7的FDCAN通信系统。介绍了基于STM32H7的FDCAN通信、双口RAM实现板间通信及TIM定时器实现心跳帧功能的程序设计和工程实现。工程实例显示该系统能够较好地实现上位机与信号采集系统间的数据实时可靠传输,具有传输速率快、实时响应性强、占用系统资源少和可靠性强等特点。In the development and application of the embedded system,in order to control the running status of embedded de⁃vices and analyze relevant data in real time,real-time information exchange between host computer and embedded system is often needed.CAN bus communication has been used to realize information exchange among devices in engineering practice because of its fast transmission rate,strong reliability,convenient and strong extensibility.In order to complete the task of information exchange between embedded device and host computer through CAN bus in a project,this paper has designed and implemented an FDCAN communication system based on STM32H7.This paper has introduced the program design and engineering implementation of FD⁃CAN communication based on STM32H7,implementation of inter-board communication with dual-port RAM and TIM timer to real⁃ize heartbeat frame function.Engineering examples has shown that this system can realize the real-time and reliable data transmis⁃sion between host computer and signal acquisition system very well.It has the characteristics of fast transmission rate,strong re⁃al-time response,less system resources occupation and strong reliability.

关 键 词：FDCAN STM32H7 双口RAM 定时器 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]