基于CAN通讯便携式DSP程序下载器的设计  

Design of Portable DSP Program Downloader Based on CAN Communication

作　　者：陈晓聪[1] 游林儒[1] 黄招彬[1] 

机构地区：[1]华南理工大学自动化科学与工程学院,广州510640

出　　处：《自动化与仪表》2013年第9期41-44,共4页Automation & Instrumentation

摘　　要：针对DSP程序更新主要在计算机环境下完成,不利于产品售后服务的现状,提出一种基于CAN总线通讯的DSP程序更新方案。该方案将待更新程序存储于便携式下载器片内Flash中。DSP目标板上电时将自动运行固化于其中的底层服务程序,由该底层程序判断是否进行程序更新。若需要更新程序,则与下载器通过CAN总线传输数据,并对数据进行CRC16校验,之后利用Flash API算法将接收到的数据可靠地烧写到片内Flash中,从而实现脱离计算机环境下的程序升级。该方案可使程序更新过程快速可靠,而且下载设备便携、界面友好且容易操作,可有效提高DSP产品的售后服务质量。Aimed at the current situation of updating DSP programs in the computer environment,which goes against the production＇s after-service,an DSP program updating project based on CAN-bus communication was put forward. The updating program was stored in the on-chip Flash of a potable downloader. The underlying service program em- bedded in the target board will run automatically when this target board powers on. Then the service program de- cides to update program or not. If needed,the target board transfers data with the downloader through CAN-bus,us- ing CRC16 to check the received data,and then burns them into on-chip Flash using Flash API algorithm. This pro- ject realizes program＇s updating method without computer device,that makes updating procedure rapid and reliable. The downloader was potable,user-friendly and easy to operate,which will enhance the quality of the production＇s af- ter-service effectively.

关 键 词：便携式下载器 CAN总线通讯 程序升级 FLASH API算法 数字处理器 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]