I am using FRDM-K66F with MCU Xpresso IDE V10.1.0. I created SDK 2.3 from online tool for MCU Xpresso and using the programs.
When I used SAI Demo App, I could hear the sound of sine wave (250 Hz.) in right and left earphones of the headset. But, I could not record my voice or any other sound through Microphone in the headset. In the jumper settings of J35 and J36, I used both the options (1-2 and 2-3) for the given headset. Still the board is not picking signals from Microphone.
Headset that I used is the one, which I use for Sony Xperia X phone.