Hi
We don't have a dedicated Wifi application based on KL25 board.
While, the FRDM-KL25Z board hardware is form-factor compatible with the Arduino™ R3 pin layout, providing a broad range of expansion board options.
I checked from Arduino web and find related WiFi Arduino board, which provides SPI, UART interface with KL25.
More detailed info about Arduino WiFi board, please check here.
Wish it helps.
Have a great day,
Ma Hui
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