TMS320F28x DSP片内Flash的在线编程技术

在研究TMS320F28x DSP片内Flash存储器的特性的基础上，开发了一种DSP片内Flash的远程在线编程系统。该系统中，上位机通过CAN总线向DSP终端发送编程命令和编程数据，然后通过DSP自身功能实现对Flash的在线编程。对该系统的硬件构成进行了说明，给出了具体的软件实现方法和流程，特别是针对程序在不同存储空间的切换、Flash中程序入口地址的修改、Flash写入代码的生成等技术难点进行了分析和说明。这种远程在线编程方法为DSP系统的软件维护和升级带来了方便，具有广泛的应用价值。

In-application Programming Technology of On-chip Flash in TMS320F28x DSP

Based on the characters of on-chip flash in TMS320F28x DSP, an in-application programmable system was designed for this kind of Flash. In the system, master computer sends programming instructions and data through CAN bus and then DSP programming its on-chip Flash by itself.The hardware components were presented and the method and flow about the software were introduced. Especially some difficulties, such as shifting within different memories, modifying the start address of code in flash, creating the code to be loaded in flash and etc, were analyzed in detail and afterwards the resolution of them were given. This in-application programming method made maintenance and updating for software of DSP more convenient and it is of great value for widely application.