Detect incoming call/ active call/ by audio jack ?

[Boki]

Hi All,

Is it possible to detect incoming call / active call/ or playing music
by audio jack of a cell phone ?

Best regards,
Boki.

 

[jasen]

Hi All,

Is it possible to detect incoming call / active call/ or playing music
by audio jack of a cell phone ?

If you put a RF sensor in the plug you could ...

 

[Boki]

jasen 寫�：

If you put a RF sensor in the plug you could ...

Hi Jasen,

How about the earphone of handset ?

There is a button to do that.

It seems one more pin in jack.

Best regards,
Boki.