There is a popular WIFI platform called “GoKit” in China. This testing kit can be use to do some customized application. Not only WIFI communication, kit also support other functions. You can find interfaces listed as below.
GoKit Interfaces:
I try to use FRDM-KL02 to communicate with this kit to do a WIFI communication application. Board connection as below.
This platform has two running mode. One is AirLink mode, and another is normal running mode. AirLink mode is used to WIFI communication or pair.
Go to AirLink mode steps:
Command Format
HOF: 2bytes, value 0xFFFF
Length: 2bytes
Cmd:1byte
SN:1byte
Flags:2bytes
DATA: Xbytes
Checksum:1byte
For detail code, I will post another thread for your reference.