基于485总线的STM32远程固件更新与实现

Remote Firmware Update and Implementation of STM32 Based on 485 Bus

摘要:

随着STM32控制器的应用越来越广泛,对控制器的远程固件更新功能需求愈发强烈。利用在应用中编程(IAP)技术原理,以STM32F103控制器为例,设计了基于485总线的控制器固件在线更新的技术方案,编写了远程固件更新上位机控制软件,采用自定义串口传输通信协议提高固件数据传输过程中的有效性,实现了485总线上STM32控制器的远程固件更新功能。实践结果表明,该方案实现的远程固件更新,避免了拆装设备或设置跳线等步骤,节省了时间、人力成本,固件更新过程方便快捷、易于操控、可靠性高,可广泛应用于具备应用中编程的STM32控制器系统中。

Abstract:

With the application of STM32 Controller widely used,the demand for remote firmware update function of the controller is increasingly strong.Base on the principle of Programming in-application(IAP) and taking STM32f103 as an example,a scheme of controller firmware online update based on 485 bus is desinged.A remote firmware update PC control software is programmed.The self-define serial communication protocol is adopted to improve the effectivesess of data transmission. The function of remotely updating firmware of STM32 comtroller on 485 bus is realized.The practical results that by the scheme not only avoids assemble of devices or setting jumpers,but also saves time and manpower cost.The firmware update process is convenient and quick,easy to operate and high reliability.The utility model can be widely used in STM32 controller with in-application programming systems.