Aimed at the program upgrading of domestic micro controller terminal equipment needs to be disassembled,a scheme based on GD32 network online updating firmware is proposed,the application software of terminal devices is upgraded using the hand-held controller,so as to achieve the purpose of updating the firmware program without the emulator.The scheme discusses in detail the compositions of the online updating system,principles of programming techniques,and design and implementation of various func-tions of the upper computer program,handheld controller and terminal equipment module,and provides the usage steps and methods for each module.The terminal equipment software adopts the multi-partition operation to ensure that the system remains functional even in the event of an exception during the upgrading process,which greatly enhances the maintainability and fault tolerance of the online updating system.The handheld controller has the advantages of easy to upgrade and carry in the field,simple,convenient,and fast maintenance.Experimental testing results show that the firmware program after online updating is successful,thereby resolving the difficulties of disassembling products in the field and updating the program with the emulator.
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