Aiming at the problem of application algorithm improvement and BUG patching after embedded devices are put into practical application,in order to improve the ease of software update and reduce the difficulty of maintenance as much as possible,a WiFi-based automatic remote upgrade system is proposed.In this system,STM32F4 is used as the core controller to effectively allocate its internal Flash storage space,design the IAP function,use the WiFi module to access the network and use the TCP protocol to transmit data. After the STM32F4 receives the remote server information,it analyzes and excludes each in this abnormal situation,the completely correct application program is written into Flash to realize the remote upgrade of the embedded software.This article gives the specific system design,program flow and part of the core code.The experiment verifies that the proposed system has good feasibility and can provide a reference for the functional improvement of embedded smart devices.
Key words
WiFi /
STM32F4 /
IAP /
remote program upgrade
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