The pace of smart home products is gradually accelerating, smart homes are on the eve of explosive growth, and the market demand for wireless modules will also show explosive growth. The application requirements for the WiFi module of the Internet of Things are also changing. The smart home solutions of the Internet of Things based on the WiFi module basically support two control modes: home and remote. The remote control mainly depends on the cloud. Then the problem comes. , How does the WiFi in the smart home product/device connect to the WiFi of the home router?
There are two ways, namely APP connection (Smart Link smart home mode) and AT command set. In this article, SKYLAB uses Smart Link as the entry point to explain in detail the IoT smart application of the WiFi module Smart Link.
Learn about Smart Link
Smart Link is a smart networking technology, a way for a WiFi module to connect to a wireless router. It is to use the broadcast packet to encrypt the SSID and password and send it through the broadcast packet.
At the application layer, the UDP protocol can send broadcast packets. Therefore, the APP or PC program sends a UDP data packet, and puts the SSID and password in the packet. After the smart socket receives the packet, it parses the packet and obtains the SSID and password. You can configure yourself and connect to the router.
How to connect the WiFi of the serial port WiFi module to the WiFi at home
The IoT WiFi module integrates Smart Link, so that when installing the smart socket for the first time, turn on the power to make the smart socket in the connected state, then enter the WiFi password in the APP, and finally the smart socket is connected to WiFi.
The specific operation process is:
1. Connect the mobile phone to the wireless router;
2. Let the WIFI module of the device enter the Smart Link configuration state through the button;
3. Open the APP and enter the wireless router password to configure;
4. The device is connected to the wireless router.
It should be noted here that the router must be the same router, that is to say, the wifi password configuration can only be performed in the LAN.
Data transmission and intelligent control applications: Aiming at the service requirements of data transmission, intelligent control and docking cloud platform in the Internet of Everything era, SKYLAB developed and launched the UART WiFi module WG219/WG229/LCS6260/WG231, which has a built-in wireless network protocol IEEE802.11 protocol stack and The TCP/IP protocol stack can realize the conversion between the user's serial port or TTL level data and the wireless network. Meet the data transmission and intelligent control needs in smart home, smart lighting, smart factory and smart medical care in the field of Internet of Things;