STM32+W5500+AIR202 Basic Control Chapter-Function 2-Android and WeChat applet use MulticastBind to bind W5500, and realize 485,422 communication and relay control through MQTT (WeChat applet)
STM32+W5500+AIR202 Basic Control Chapter-Function 2-Android and WeChat applet use MulticastBind to bind W5500, and realize 485,422 communication and relay control through MQTT (WeChat applet)
The function of this section is to use WeChat applet to bind W5500, and then realize MQTT remote communication control with W5500About the binding method of this section: MulticastBindMulticastBind means multicast bindingWeChat applet and W5500 exchange data through multicast to achieve bindingHowever, it is not so easy to implement. The internal protocol stack of W5500 is not good enough. In multicast mode, you can only parse tcp/ip data by yourself!!!
source URL : https://cloud.tencent.com/developer/article/1666953
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